150 problem(s) found in 5095 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT S='Die Schwalbe' AND K='Reiner Rundlauf'] [download as LaTeX]
BTM: 1. ... Kb2 2. La7 Ka3 3. Lb6 Ka4 4. Lc7 Kb5 5. Lb6 Ka6 6. Lc7 Ka7 7. Lb6+ Kb8 8. La7+ Kc7 9. Lb6+ Kd7 10. Lc7 Ke7 11. Lb6 Kf8 12. Lc7 Kg7 13. Lb6 Kh6 14. Lc7 Kg5 15. Lb6 Kf5 16. Lc7 Ke5 17. Lb6 Kd5 18. Lc7 Kc4 19. Lb6 Kb5 20. Lc7 Ka4 21. Lb6 Ka3 22. Lc7 Kb2 23. Lb8 Ka1
WTM: 1. La7 Kb2 2. Lb6 Ka3 3. Lc7 Ka4 4. Lb6 Kb5 5. Lc7 Kc4 6. Lb6 Kd5 7. Lc7 Ke5 8. Lb6 Kf5 9. Lc7 Kg5 10. Lb6 Kh6 11. Lc7 Kg7 12. Lb6 Kf8 13. Lc7 Ke7 14. Lb6 Kd7 15. La7 Kc7 16. Lb6+ Kb8 17. Lc7+ Ka7 18. Lb6+ Ka6 19. Lc7 Kb5 20. Lb6 Ka4 21. Lc7 Ka3 22. Lb6 Kb2 23. Lc7 Ka1 24. Lb8
Die kürzestmögliche OR erfordert 23 schwarze Züge (C+), die Zugfolge ist nicht eindeutig.
WTM: 1. La7 Kb2 2. Lb6 Ka3 3. Lc7 Ka4 4. Lb6 Kb5 5. Lc7 Kc4 6. Lb6 Kd5 7. Lc7 Ke5 8. Lb6 Kf5 9. Lc7 Kg5 10. Lb6 Kh6 11. Lc7 Kg7 12. Lb6 Kf8 13. Lc7 Ke7 14. Lb6 Kd7 15. La7 Kc7 16. Lb6+ Kb8 17. Lc7+ Ka7 18. Lb6+ Ka6 19. Lc7 Kb5 20. Lb6 Ka4 21. Lc7 Ka3 22. Lb6 Kb2 23. Lc7 Ka1 24. Lb8
Die kürzestmögliche OR erfordert 23 schwarze Züge (C+), die Zugfolge ist nicht eindeutig.
Keywords: Ortho-reconstruction, Königswanderung, Pure Round Trip (k)
Genre: Retro
FEN: 1B1n4/1P3P2/2ppppP1/p1P4p/8/2Pp1PP1/P2p4/kb1K4
Reprints: 13 32 personaggi e 1 autore 1955
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-08-10 more...
Genre: Retro
FEN: 1B1n4/1P3P2/2ppppP1/p1P4p/8/2Pp1PP1/P2p4/kb1K4
Reprints: 13 32 personaggi e 1 autore 1955
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-08-10 more...
1. h4 g5 2. hxg5 e5 3. Txh7 Df6 4. Txf7 Th3 5. g4 Te3 6. dxe3 Lb4+ 7. Ld2 d6 8. Lc3 Le6 9. Dd4 Lxa2 10. Sd2 Ld5 11. Txa7 Lf3 12. exf3 Se7 13. Ld3 Kd7 14. Kf1 Kc6 15. Kg2 Sd7 16. Kg3 Th8 17. Ta8 Th1 18. Sh3 Ta1 19. Tc8 Ta8
Keywords: Unique Proof Game, Pure Round Trip (t)
Genre: Retro
Computer test: Resolution time : 54.34 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: r1R5/1ppnnR2/2kp1q2/4p1P1/1b1Q2P1/2BBPPKN/1PPN1P2/8
Reprints: 2 64 Proof Games 2012
Input: Gerd Wilts, 1999-02-27
Last update: Gerd Wilts, 2012-12-23 more...
Genre: Retro
Computer test: Resolution time : 54.34 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: r1R5/1ppnnR2/2kp1q2/4p1P1/1b1Q2P1/2BBPPKN/1PPN1P2/8
Reprints: 2 64 Proof Games 2012
Input: Gerd Wilts, 1999-02-27
Last update: Gerd Wilts, 2012-12-23 more...
1. g4 c5 2. Lg2 Da5 3. Lc6 Dxa2 4. Lb5 Dd5 5. Ta6 Sh6 6. Tc6 dxc6 7. b3 Lf5 8. Lb2 Sd7 9. Lf6 exf6 10. g5 Ld6 11. g6 Ke7 12. gxh7 Thb8 13. h8=T a5 14. Tc8 a4 15. Tc7 Th8 16. f3 Ke8 17. Kf2 Lf8 18. Kg3 a3 19. Kh4 Ta4+ 20. Kh5 Tg4 21. d4 Sb8 22. Dd3 Dd8 23. Sd2 Lc8 24. Dh7 Sg8
Switchback von 7 schwarzen Figuren, davon nur einer mit Schlag!
Switchback von 7 schwarzen Figuren, davon nur einer mit Schlag!
Keywords: Unique Proof Game, Pure Round Trip (d), Switchback (sldklst), Promotion (T)
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:03:45 Minuten. (hh:mm:ss) Keine Lösung: BP 23.0, BP 23.5.
FEN: 1nbqkbnr/1pR2ppQ/2p2p2/1Bp4K/3P2r1/pP3P2/2PNP2P/6NR
Input: Gerd Wilts, 1999-02-27
Last update: A.Buchanan, 2023-04-01 more...
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:03:45 Minuten. (hh:mm:ss) Keine Lösung: BP 23.0, BP 23.5.
FEN: 1nbqkbnr/1pR2ppQ/2p2p2/1Bp4K/3P2r1/pP3P2/2PNP2P/6NR
Input: Gerd Wilts, 1999-02-27
Last update: A.Buchanan, 2023-04-01 more...
4 - P0009151
Gianni Donati
R038 Probleemblad 09/1998
Michel Caillaud gewidmet
1. Lob
(14+15) C+
BP in 22,0
Gianni Donati
R038 Probleemblad 09/1998
Michel Caillaud gewidmet
1. Lob
(14+15) C+
BP in 22,0
1. h4 Sf6 2. h5 Sd5 3. h6 gxh6 4. Sf3 Lg7 5. Tg1 Lc3 6. Se5 Kf8 7. f3 Kg7 8. Kf2 Dg8 9. Kg3 Kf8+ 10. Kh4 Dg6 11. d4 Db6 12. Kh5 Db3 13. axb3 Ke8 14. Ta6 Kd8 15. Tf6 exf6 16. Sa3 Se7 17. d5 Te8 18. Dd4 Sg8 19. Da4 Lb4 20. c4 Lf8 21. Sc2 Te7 22. Se1 Ke8
Keywords: Unique Proof Game, Round Trip (k), Pure Round Trip (sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:08:49 Minuten. (hh:mm:ss) Keine Lösung: BP 21.0, BP 21.5.
FEN: rnb1kbn1/pppprp1p/5p1p/3PN2K/Q1P5/1P3P2/1P2P1P1/2B1NBR1
Input: Gerd Wilts, 1999-02-27
Last update: A.Buchanan, 2023-03-13 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:08:49 Minuten. (hh:mm:ss) Keine Lösung: BP 21.0, BP 21.5.
FEN: rnb1kbn1/pppprp1p/5p1p/3PN2K/Q1P5/1P3P2/1P2P1P1/2B1NBR1
Input: Gerd Wilts, 1999-02-27
Last update: A.Buchanan, 2023-03-13 more...
1. a4 Sc6 2. a5 Tb8 3. a6 bxa6 4. Ta4 Tb3 5. Th4 Tc3 6. dxc3 g5 7. Dd6 exd6 8. Le3 Df6 9. Sd2 Df3 10. exf3 g4 11. Ld3 g3 12. Se2 gxh2 13. Sg3 h5 14. Ke2 Lh6 15. Ta1 h1=T 16. Taa4 Ta1 17. Th1 Ta2 18. Ta1 Sd4+ 19. Ke1 Sb5 20. Tah4 c5 21. Th1 h4 22. Lf1
Henrik Juel: Natch 3.1 made no progress after half an hour (2018-12-13)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:06:29 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:06:29 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment
Keywords: Unique Proof Game, Pure Round Trip (TT)
Genre: Retro
Computer test: Stelvio 1.11, Natch
FEN: 2b1k1nr/p2p1p2/p2p3b/1np5/7p/2P1BPN1/rPPN1PP1/R3KB1R
Reprints: feenschach 153 10-12/2003
9 64 Proof Games 2012
Input: Gerd Wilts, 1999-02-27
Last update: Silvio Baier, 2023-03-20 more...
Genre: Retro
Computer test: Stelvio 1.11, Natch
FEN: 2b1k1nr/p2p1p2/p2p3b/1np5/7p/2P1BPN1/rPPN1PP1/R3KB1R
Reprints: feenschach 153 10-12/2003
9 64 Proof Games 2012
Input: Gerd Wilts, 1999-02-27
Last update: Silvio Baier, 2023-03-20 more...
6 - P0009165
Michel Caillaud
PR17 Problem Paradise 12 01-03/1999
3. ehrende Erwähnung
(15+13) C+
BP in 22,5
Michel Caillaud
PR17 Problem Paradise 12 01-03/1999
3. ehrende Erwähnung
(15+13) C+
BP in 22,5
1. f4 Sc6 2. f5 Tb8 3. f6 exf6 4. a4 Lb4 5. a5 Lc3 6. dxc3 De7 7. Le3 De5 8. Lxa7 b6 9. a6 Tb7 10. Lb8 Sge7 11. a7 Tg8 12. a8=L Ta7 13. Lb7 Ta8 14. h4 Sa7 15. Le4 d5 16. Lxh7 g6 17. h5 Tg7 18. h6 Dh5 19. Lg8 Lf5 20. h7 Sec8 21. h8=D Th7 22. Dg7 Th8 23. Dh7
Rundlauf der sTT a8 und h8.
Rundlauf der sTT a8 und h8.
Henrik Juel: Natch 3.1 made no progress after half an hour (2018-12-13)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 27:15:46 Stunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 27:15:46 Stunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
comment
Keywords: Unique Proof Game, Pure Round Trip (tt), Promotion
Genre: Retro
Computer test: Stelvio 1.0
FEN: rBn1k1Br/n1p2p1Q/1p3pp1/3p1b1q/8/2P5/1PP1P1P1/RN1QKBNR
Input: Gerd Wilts, 1999-02-27
Last update: Silvio Baier, 2023-03-03 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: rBn1k1Br/n1p2p1Q/1p3pp1/3p1b1q/8/2P5/1PP1P1P1/RN1QKBNR
Input: Gerd Wilts, 1999-02-27
Last update: Silvio Baier, 2023-03-03 more...
1) 1. Kc3+ Sc4 2. Sb4 Sxe3 3. Kb3 Sf1 4. Tc3 Sd2#
2) 1. Tc3 Sf1 2. Kc4 Sxe3+ 3. Kb3+ Sc4 4. Sb4 Sd2#
2) 1. Tc3 Sf1 2. Kc4 Sxe3+ 3. Kb3+ Sc4 4. Sb4 Sd2#
Keywords: Pure Round Trip (S,S), Tempo Move (k,k)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/2n5/2r5/rk4K1/p3p3/pppNp3/3b4
Reprints: E226 FIDE Album 1989-1991 1997
Input: Gerd Wilts, 1996-06-06
Last update: Marcin Banaszek, 2018-02-13 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/2n5/2r5/rk4K1/p3p3/pppNp3/3b4
Reprints: E226 FIDE Album 1989-1991 1997
Input: Gerd Wilts, 1996-06-06
Last update: Marcin Banaszek, 2018-02-13 more...
8 - P0501209
Hilmar Ebert
Hans Gruber
Denis Blondel
12173v British Chess Magazine 1985
1. ehrende Erwähnung
(2+13) C+
h#4
Hilmar Ebert
Hans Gruber
Denis Blondel
12173v British Chess Magazine 1985
1. ehrende Erwähnung
(2+13) C+
h#4
1. Tc4 Txa2 2. Tb4 Txb2 3. Ta2 Txb1 4. Ta1 Txa1#
Yuri Bilokin: you can see
1...Rxb1 2.a1=Q Rxa1 3.b1=Q+ Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=R Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=B+ Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=S Rxb1 4.Ra1 Rxa1# (2023-05-08)
more ...
comment
1...Rxb1 2.a1=Q Rxa1 3.b1=Q+ Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=R Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=B+ Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=S Rxb1 4.Ra1 Rxa1# (2023-05-08)
more ...
comment
Keywords: Pure Round Trip (T), Tempo Move (ttt), Switchback (t), Minimal (T)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: b7/1n6/8/pp2p3/kr1pK3/rp6/pp6/Rn6
Reprints: 12173v British Chess Magazine 01/1986
Input: Gerd Wilts, 1996-06-06
Last update: A.Buchanan, 2017-03-20 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: b7/1n6/8/pp2p3/kr1pK3/rp6/pp6/Rn6
Reprints: 12173v British Chess Magazine 01/1986
Input: Gerd Wilts, 1996-06-06
Last update: A.Buchanan, 2017-03-20 more...
a) 1. De4 Ld4 2. Td5 Lh8 3. f5 Kg7 4. Ke5 Kf7#
b) 1. Tf5 Kg7 2. Le7 Kh7 3. Kf6 Kh6 4. De6 Sg4#
b) 1. Tf5 Kg7 2. Le7 Kh7 3. Kf6 Kh6 4. De6 Sg4#
Teppo Mänttä: reprints: 89 Shakkitehtäviä 1999; 762 Minimalkunst im Schach 2006 (2021-04-25)
Teppo Mänttä: Commendation in the informal tourney of Suomen Shakki 1988. (2021-05-28)
comment
Teppo Mänttä: Commendation in the informal tourney of Suomen Shakki 1988. (2021-05-28)
comment
Keywords: Hilfsmatt-Inder (LK), Pure Round Trip (K)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/5p2/3bk2K/3q2r1/5p2/8/5B2/8
Input: Gerd Wilts, 1996-06-06
Last update: hpr, 1999-01-09 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/5p2/3bk2K/3q2r1/5p2/8/5B2/8
Input: Gerd Wilts, 1996-06-06
Last update: hpr, 1999-01-09 more...
1. f2 Tb1 2. Sf3 Tb2 3. Ke1 Txc2 4. Sd2 Tc1#
Cook: NL
1. Sg2 Th1 2. f2 Th8 3. Ke1 Th2 4. Kf1 Th1#
Cook: NL
1. Sg2 Th1 2. f2 Th8 3. Ke1 Th2 4. Kf1 Th1#
Adrian Storisteanu: Possible fix:
Kh1 Rb1 / Kc2 Sd1 ppb2 d2 e3 g3 h2 h3 (2+8) h#4
1.e2 Ra1 2.Se3 Ra2 3.Kd1 Rxb2 4.Sc2 Rb1# (2015-07-24)
milan: milan frelih: i've found key solution,your move? (2015-07-24)
milan: Milan Frelih:[Ka1 h1,+bBb1,wPe3=bPe4] (2015-08-31)
Yuri Bilokin: Correction: wKa1-h1, wRc1-b1, bKd2-c2, bPc2-b2, bNe1-d1, bPe2-d2, bPf3-e3, -bPb3, -bPd3, -wPe3, -bPe4, +bQg3 8/8/8/8/8/4p1q1/1pkp4/1R1n3K (2+6) h#4 1.e2 Ra1 2.Se3 Ra2 3.Kd1 Rxb2 4.Sc2 Rb1# (MM) (2022-04-21)
comment
Kh1 Rb1 / Kc2 Sd1 ppb2 d2 e3 g3 h2 h3 (2+8) h#4
1.e2 Ra1 2.Se3 Ra2 3.Kd1 Rxb2 4.Sc2 Rb1# (2015-07-24)
milan: milan frelih: i've found key solution,your move? (2015-07-24)
milan: Milan Frelih:[Ka1 h1,+bBb1,wPe3=bPe4] (2015-08-31)
Yuri Bilokin: Correction: wKa1-h1, wRc1-b1, bKd2-c2, bPc2-b2, bNe1-d1, bPe2-d2, bPf3-e3, -bPb3, -bPd3, -wPe3, -bPe4, +bQg3 8/8/8/8/8/4p1q1/1pkp4/1R1n3K (2+6) h#4 1.e2 Ra1 2.Se3 Ra2 3.Kd1 Rxb2 4.Sc2 Rb1# (MM) (2022-04-21)
comment
Keywords: Interchange (ks (2)), Pure Round Trip (T)
Genre: h#
FEN: 8/8/8/8/4p3/1pp1Pp2/2pkp3/K1R1n3
Input: hpr, 1996-07-01
Last update: Alfred Pfeiffer, 2015-07-24 more...
Genre: h#
FEN: 8/8/8/8/4p3/1pp1Pp2/2pkp3/K1R1n3
Input: hpr, 1996-07-01
Last update: Alfred Pfeiffer, 2015-07-24 more...
* 1. ... Tc4 2. Ka1 Tc1#
1. Lc3 Ta2 2. Lb2 Ta4 3. La3 Td4 4. Lb4 Td1#
1. Lc3 Ta2 2. Lb2 Ta4 3. La3 Td4 4. Lb4 Td1#
Keywords: Maximummer, no 8x8 board, Aristocrat, Pure Round Trip (L)
Genre: Fairies
FEN: qqqqqqqq/qqqqqqqq/qqqqqqqq/qqqqqqqq/1B2qqqq/1k2qqqq/2r1qqqq/1K2qqqq
Input: hpr, 1996-07-23
Last update: Alfred Pfeiffer, 2018-12-11 more...
Genre: Fairies
FEN: qqqqqqqq/qqqqqqqq/qqqqqqqq/qqqqqqqq/1B2qqqq/1k2qqqq/2r1qqqq/1K2qqqq
Input: hpr, 1996-07-23
Last update: Alfred Pfeiffer, 2018-12-11 more...
1. Db6 Td7 2. Ld6 Ta7 3. Kd5 Ta5+ 4. Kc6 d5#
teilweiser Rundlauf T
Yuri Bilokin: Long-trip (wR, 3)
Umnov mate (bK-wP)
Ideal mate
Epaulette mate (2023-05-08)
comment
Yuri Bilokin: Long-trip (wR, 3)
Umnov mate (bK-wP)
Ideal mate
Epaulette mate (2023-05-08)
comment
Keywords: Pure Round Trip
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 2K5/8/3R4/4b3/3Pk3/1q6/8/8
Input: hpr, 1996-09-05
Last update: hpr, 1999-06-06 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 2K5/8/3R4/4b3/3Pk3/1q6/8/8
Input: hpr, 1996-09-05
Last update: hpr, 1999-06-06 more...
1. Th1 Sa1 2. Th4 Sh1 3. Tf4 Sc2#
Cook: NL
1. Tf1 Kh8 2. Tf2 Sa1 3. Df4 Sc2#
1. Df4 Sxa1 2. e1=L h6 3. Lf2 Sc2#
Cook: NL
1. Tf1 Kh8 2. Tf2 Sa1 3. Df4 Sc2#
1. Df4 Sxa1 2. e1=L h6 3. Lf2 Sc2#
teilweiser Rundlauf t
Adrian Storisteanu: Possible fix: bPe4 (instead of the bQ), +wPf5, +bPf6 (6+9). (2015-08-15)
Yuri Bilokin: correction bRd3(-bNd3), bBe4(-bQe4), bPf3(-bBf3) 6K1/8/8/7P/3Pb3/pN1rkpN1/3pp3/r7 (5+8) (2022-12-19)
A.Buchanan: This is very clean Yuri well done. I would shift bPa3 to a5. wK must be exactly on g8, else the problem is cooked (2022-12-20)
comment
Adrian Storisteanu: Possible fix: bPe4 (instead of the bQ), +wPf5, +bPf6 (6+9). (2015-08-15)
Yuri Bilokin: correction bRd3(-bNd3), bBe4(-bQe4), bPf3(-bBf3) 6K1/8/8/7P/3Pb3/pN1rkpN1/3pp3/r7 (5+8) (2022-12-19)
A.Buchanan: This is very clean Yuri well done. I would shift bPa3 to a5. wK must be exactly on g8, else the problem is cooked (2022-12-20)
comment
Keywords: Pure Round Trip
Genre: h#
FEN: 6K1/8/8/7P/3Pq3/pN1nkbN1/3pp3/r7
Input: hpr, 1996-09-05
Last update: Alfred Pfeiffer, 2015-08-15 more...
Genre: h#
FEN: 6K1/8/8/7P/3Pq3/pN1nkbN1/3pp3/r7
Input: hpr, 1996-09-05
Last update: Alfred Pfeiffer, 2015-08-15 more...
1. Th8 Lg1 2. Th1 Lf2 3. Td1 Le1 4. Td8 Lb4 5. Te8 Lxc5#
Keywords: Pure Round Trip
Genre: h#
FEN: 5br1/2K1krp1/4pqp1/2p1pbp1/4p1p1/4P1P1/7B/1n6
Input: hpr, 1996-09-05
Last update: hpr, 1999-06-06 more...
Genre: h#
FEN: 5br1/2K1krp1/4pqp1/2p1pbp1/4p1p1/4P1P1/7B/1n6
Input: hpr, 1996-09-05
Last update: hpr, 1999-06-06 more...
1. Kc3 De6 2. Kxd4 Dxd6+ 3. Ke4 De5#
NL
1. Kc3 Df5 2. Tf8 Kxd6 3. Kxd4 Dd3#
NL
1. Kc3 Df5 2. Tf8 Kxd6 3. Kxd4 Dd3#
Korrektur Hilmar Ebert: +sSe8 (erhält Quasi-Symmetrie)
Yuri Bilokin: Not all pieces in quasi-symmetry are necessary: the white pawn on h2 is superfluous. It is clear that more than 100 years ago there was such a direction in art, although some authors indulge in technical white pawns in our time. (2022-12-19)
A.Buchanan: The technical term for such a position is "symmetric constellation". "Quasi-symmetry" is where the position is nearly symmetric but not quite (e.g. game array except wPa2 is missing). In a symmetric constellation any redundant piece is a definite defect. A quasi-symmetric position is not an ornament, more of a consequence of the content. For example, a number of last move type DD problems are quasi-symmetric (2022-12-20)
Yuri Bilokin: Thanks for the interpretation (2022-12-20)
comment
Yuri Bilokin: Not all pieces in quasi-symmetry are necessary: the white pawn on h2 is superfluous. It is clear that more than 100 years ago there was such a direction in art, although some authors indulge in technical white pawns in our time. (2022-12-19)
A.Buchanan: The technical term for such a position is "symmetric constellation". "Quasi-symmetry" is where the position is nearly symmetric but not quite (e.g. game array except wPa2 is missing). In a symmetric constellation any redundant piece is a definite defect. A quasi-symmetric position is not an ornament, more of a consequence of the content. For example, a number of last move type DD problems are quasi-symmetric (2022-12-20)
Yuri Bilokin: Thanks for the interpretation (2022-12-20)
comment
Keywords: Pure Round Trip (D)
Genre: h#
FEN: 8/4K3/3p1r2/4Q3/3P1P2/8/1k2P2P/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 2001-12-21 more...
Genre: h#
FEN: 8/4K3/3p1r2/4Q3/3P1P2/8/1k2P2P/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 2001-12-21 more...
1. Tc2 Th1 2. Kb2 Th8 3. Kc1 Txa8 4. Sb2 Ta1#
Erich Bartel: Nachdruck:
1) V35) Problemkiste (125) X 1999.--- (2007-07-18)
Yuri Bilokin: Areal cycle (wR, with captures, 4)
Corner-to-corner (wR) × 4
Four corners (wR (2023-05-08)
comment
1) V35) Problemkiste (125) X 1999.--- (2007-07-18)
Yuri Bilokin: Areal cycle (wR, with captures, 4)
Corner-to-corner (wR) × 4
Four corners (wR (2023-05-08)
comment
Keywords: Pure Round Trip (D)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: r7/6K1/8/5q2/n3b3/1k6/r2p4/R7
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: r7/6K1/8/5q2/n3b3/1k6/r2p4/R7
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
1. Se3 Tf7 2. Sg4 Txd7 3. Kf4 Td5 4. e4 Tf5#
NL
1. Se3 Tf3 2. Lg4 Th3 3. Kf4 Kf6 4. e4 fxe3#
NL
1. Se3 Tf3 2. Lg4 Th3 3. Kf4 Kf6 4. e4 fxe3#
Yuri Bilokin: Correction: sNd5-g8 6n1/3b4/6K1/4pR2/4k3/8/5P2/8 (3+4) h#4
1.Sh6 Rf7 2.Sg4 Rxd7 3.Kf4 Rd5 4.e4 Rf5# (2022-04-20)
comment
1.Sh6 Rf7 2.Sg4 Rxd7 3.Kf4 Rd5 4.e4 Rf5# (2022-04-20)
comment
Keywords: Pure Round Trip (T)
Genre: h#
FEN: 8/3b4/6K1/3npR2/4k3/8/5P2/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
FEN: 8/3b4/6K1/3npR2/4k3/8/5P2/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
1. Sb3 Tg2 2. Tf1+ Tg1 3. Ta1 Tc1 4. b1=S Tc2#
Yuri Bilokin: Redaction: Yuri Bilokin & Hermann Lücke -wPh2 8/8/8/8/5b2/p4r1p/kpR5/2n4K (2+7) h#4 2.1…
1.Sb3 Rg2 2.Rf1+ Rg1 3.Ra1 Rc1 4.b1=S Rc2# (MM)
1.Ka1 Rh2 2.Se2 Rxh3 3.Rf1+ Kg2 4.Rb1 Rxa3# (MM) (2022-04-25)
comment
1.Sb3 Rg2 2.Rf1+ Rg1 3.Ra1 Rc1 4.b1=S Rc2# (MM)
1.Ka1 Rh2 2.Se2 Rxh3 3.Rf1+ Kg2 4.Rb1 Rxa3# (MM) (2022-04-25)
comment
Keywords: Pure Round Trip (T)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/5b2/p4r1p/kpR4P/2n4K
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/5b2/p4r1p/kpR4P/2n4K
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
19 - P0503616
Johann Christoffel van Gool
Jacobus Theodorus Sanderse
876b The Problemist 01/1983
(4+5) C+
h#4
2.1...
Johann Christoffel van Gool
Jacobus Theodorus Sanderse
876b The Problemist 01/1983
(4+5) C+
h#4
2.1...
1) 1. Sc3 Th1 2. Kc2 Th3 3. Kd1 Txc3 4. Ke1 Tc1#
2) 1. Kxb3 Ta1 2. Kc2 Txa2+ 3. Kd1 Tc2 4. Ke1 Tc1#
2) 1. Kxb3 Ta1 2. Kc2 Txa2+ 3. Kd1 Tc2 4. Ke1 Tc1#
Keywords: Pure Round Trip (T)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/1p6/1P6/nk1npPK1/2R5
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/1p6/1P6/nk1npPK1/2R5
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-13 more...
20 - P0503644
Peter Kniest
3650v Deutsche Schachzeitung 11/1976
(3+11) C+
h#4
b) wBb3 nach c2, sBb4 nach c3
Peter Kniest
3650v Deutsche Schachzeitung 11/1976
(3+11) C+
h#4
b) wBb3 nach c2, sBb4 nach c3
a) 1. Dg4+ Lg2 2. De6 Lf1 3. Kd5 La6 4. c5 Lb7#
b) 1. De4 Ld5 2. c6 La2 3. Sb3 cxb3 4. Kd5 b4#
b) 1. De4 Ld5 2. c6 La2 3. Sb3 cxb3 4. Kd5 b4#
Keywords: Hilfsmatt-Inder (LB), Pure Round Trip (L)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/1Bp5/3p1p2/2k1r3/1p1p3q/1P5r/3n4/3n2K1
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/1Bp5/3p1p2/2k1r3/1p1p3q/1P5r/3n4/3n2K1
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-13 more...
1. Sf3 Sxf4 2. Kd2 Se6 3. Ke3 Sxc7 4. Kf4 Sd5#
NL
1. Dc2 Kh4 2. f3 Kg3 3. Kd1 Kf2 4. Dc1 Se3#
NL
1. Dc2 Kh4 2. f3 Kg3 3. Kd1 Kf2 4. Dc1 Se3#
Yuri Bilokin: correction bSe4 1B6/2p5/8/3N1p1K/4np2/8/3n4/2k5 (3+6) h#4
1.Sf3 Sxf4 2.Kd2 Se6 3.Ke3 Sxc7 4.Kf4 Sd5# (IM)
Annihilation × 2
Areal cycle (wS, with captures, 4)
Crusader theme. Kniest theme
Long-trip (wS, 4)
Ideal mate
Battery mate. Double-check mate (2023-05-23)
comment
1.Sf3 Sxf4 2.Kd2 Se6 3.Ke3 Sxc7 4.Kf4 Sd5# (IM)
Annihilation × 2
Areal cycle (wS, with captures, 4)
Crusader theme. Kniest theme
Long-trip (wS, 4)
Ideal mate
Battery mate. Double-check mate (2023-05-23)
comment
Keywords: Pure Round Trip (S)
Genre: h#
FEN: 1B6/2p5/8/3N1p1K/4qp2/8/3n4/2k5
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
FEN: 1B6/2p5/8/3N1p1K/4qp2/8/3n4/2k5
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-13 more...
1. Kb7 Lh3 2. Kc6 Lg4 3. Kd5 Lh3 4. Kc4 d3+ 5. Kxd3 Lg4 6. Kc3 Lh3 7. d3 Lg4 8. d2 Lh3 9. d1=L Lg4 10. Lb3 Lh3 11. Le6 fxe6 12. Kxb4 e7 13. Ka5 e8=D 14. Ka6 Da8#
Keywords: Pure Round Trip (k), Promotion
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/kp3p1p/1p3P1P/1P1p1pB1/5Pp1/3P2Pp/7K
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-13 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/kp3p1p/1p3P1P/1P1p1pB1/5Pp1/3P2Pp/7K
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-13 more...
1. Kc5 Ta2 2. Kb5 Kd5 3. Kb4 Kc6 4. Kc4 Ta4#
Keywords: Pure Round Trip (k)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/8/8/8/2k1K3/2p5/1RP5/8
Reprints: Problemkiste 99 06/1995
1936 Ideal-Mate Encyclopedia Vol.1 1999
Problemkiste 121 02/1999
r628 Mirador 06/2002
153) Hobelspäne (2) 28/05/2017
Input: hpr, 1996-09-23
Last update: Alfred Pfeiffer, 2019-05-15 more...
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/8/8/8/2k1K3/2p5/1RP5/8
Reprints: Problemkiste 99 06/1995
1936 Ideal-Mate Encyclopedia Vol.1 1999
Problemkiste 121 02/1999
r628 Mirador 06/2002
153) Hobelspäne (2) 28/05/2017
Input: hpr, 1996-09-23
Last update: Alfred Pfeiffer, 2019-05-15 more...
1. Dxe5+ Lf5 2. Dxd4 Lc2 3. De4 Lb3#
NL:
1. d1=S Le7 2. Sxb2 Sb3 3. f1=S Sc1#
NL:
1. d1=S Le7 2. Sxb2 Sb3 3. f1=S Sc1#
Korrekturvorschlag HJS Co+:wKg5, wLc2f6, wSc5, wBb2d4e5g4, sKa2, sDe4, sTa1h1, sLb1d8, sBb4d5e6f2f7
milan: +wPd6 M.Frelih (2021-12-01)
A.Buchanan: 3b4/5p2/4pB2/2NpP1K1/1p1Pq1P1/8/kPB2p2/rb5r as specified in Korrekturvorschlag HJS is C+ with 2 fewer units (2021-12-02)
comment
milan: +wPd6 M.Frelih (2021-12-01)
A.Buchanan: 3b4/5p2/4pB2/2NpP1K1/1p1Pq1P1/8/kPB2p2/rb5r as specified in Korrekturvorschlag HJS is C+ with 2 fewer units (2021-12-02)
comment
Keywords: Pure Round Trip (d)
Genre: h#
FEN: 3b2n1/5p2/4pB2/1pNpP1K1/3Pq1P1/8/kPBp1p1r/rb6
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-19 more...
Genre: h#
FEN: 3b2n1/5p2/4pB2/1pNpP1K1/3Pq1P1/8/kPBp1p1r/rb6
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-19 more...
1. Te2 Kg5 2. Te5+ Kf4 3. Tg5+ Ke3 4. Tg2 Lxf3#
Cook: NL 1. Tg7 La4 2. Te7 Kg6 3. e5 Lc6+ 4. Ke6 d5#
Cook: NL 1. Tg7 La4 2. Te7 Kg6 3. e5 Lc6+ 4. Ke6 d5#
milan: +bPb5 M.Frelih (2016-11-28)
Yuri Bilokin: bQd6, bBb8 1b6/8/3qp2K/3k4/2pP4/5p2/6r1/3B3b (3+8) (2021-06-12)
comment
Yuri Bilokin: bQd6, bBb8 1b6/8/3qp2K/3k4/2pP4/5p2/6r1/3B3b (3+8) (2021-06-12)
comment
Keywords: Pure Round Trip (t)
Genre: h#
FEN: 1q6/8/3bp2K/3k4/2pP4/5p2/6r1/3B3b
Input: hpr, 1996-09-23
Last update: Alfred Pfeiffer, 2016-11-28 more...
Genre: h#
FEN: 1q6/8/3bp2K/3k4/2pP4/5p2/6r1/3B3b
Input: hpr, 1996-09-23
Last update: Alfred Pfeiffer, 2016-11-28 more...
1. Kd2 Lxb6 2. Kxc3 Lc7 3. Kxd4 Lxd6 4. Ke3 Lc5#
Yuri Bilokin: Areal cycle (bK, with captures, 4)
Areal cycle (wB, with captures, 4) (2023-05-08)
comment
Areal cycle (wB, with captures, 4) (2023-05-08)
comment
Keywords: Pure Round Trip
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 2b5/1p1R4/1p1p4/1PB4p/1PpP1p1P/2P1kPpK/2P3P1/3B4
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 2b5/1p1R4/1p1p4/1PB4p/1PpP1p1P/2P1kPpK/2P3P1/3B4
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
1) 1. Ke4 Txc4+ 2. Kxe5 Txc5+ 3. Kd4 Tb5 4. e5 Tb4#
2) 1. Kxe5 Tb5 2. Kd4 Txc5 3. Lb5+ Txb5 4. e5 Tb4#
2) 1. Kxe5 Tb5 2. Kd4 Txc5 3. Lb5+ Txb5 4. e5 Tb4#
Keywords: Pure Round Trip
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/p3p3/p1K1p3/P1p1P3/1Rbk4/2npp3/8/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/p3p3/p1K1p3/P1p1P3/1Rbk4/2npp3/8/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
1) 1. ... Txb8 2. Kc5 Txe8 3. Lc3 Te5+ 4. Kb4 Tb5#
2) 1. ... Te5 2. Dd6 Txe8 3. Kc5 Tb8 4. Ld4 Tb5#
NL:
1. ... Tb6 2. Kc3 Sb5+ 3. Kb4 Sd6+ 4. Ka5 Sc4#
2) 1. ... Te5 2. Dd6 Txe8 3. Kc5 Tb8 4. Ld4 Tb5#
NL:
1. ... Tb6 2. Kc3 Sb5+ 3. Kb4 Sd6+ 4. Ka5 Sc4#
Yuri Bilokin: correction +bNd2 1q2b2b/N7/8/1R6/3k4/pP6/3n4/7K (4+6)
AntiZielElement (W1, line obstruction)
Areal cycle (wR, with captures, 4) × 2
Exchange of moves (W1/W3)
JT Onkoud 50 theme
Long-trip (wR, 4) × 2. Many-ways (wR, 2) × 4
Zalokotsky theme (wR/wR, 3)
Model mate × 2.Mates on the same square × 2 (2023-05-08)
comment
AntiZielElement (W1, line obstruction)
Areal cycle (wR, with captures, 4) × 2
Exchange of moves (W1/W3)
JT Onkoud 50 theme
Long-trip (wR, 4) × 2. Many-ways (wR, 2) × 4
Zalokotsky theme (wR/wR, 3)
Model mate × 2.Mates on the same square × 2 (2023-05-08)
comment
Keywords: Pure Round Trip
Genre: h#
FEN: 1q2b2b/N7/8/1R6/3k4/pP6/8/7K
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
Genre: h#
FEN: 1q2b2b/N7/8/1R6/3k4/pP6/8/7K
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
29 - P0503912
Bernt Gösta Ahlgren
Christer Jonsson
Anders Lundström
616 The Problemist 09/1978
1. Preis
(3+9) C+
h#4
2.1...
Bernt Gösta Ahlgren
Christer Jonsson
Anders Lundström
616 The Problemist 09/1978
1. Preis
(3+9) C+
h#4
2.1...
1) 1. c2 Lxc2 2. Lc3 Lb3 3. Ke4 La2 4. Kd3 Lb1#
2) 1. f2 Lxf2 2. Lf3 Lg3+ 3. Ke3 Lh2 4. Df4 Lg1#
2) 1. f2 Lxf2 2. Lf3 Lg3+ 3. Ke3 Lh2 4. Df4 Lg1#
Keywords: Pure Round Trip (L4,L4)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/K1p5/8/b7/2q2k2/2p2p2/3pp3/1B4Bb
Reprints: 608 FIDE Album 1977-1979
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: A.Buchanan, 2021-08-01 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/K1p5/8/b7/2q2k2/2p2p2/3pp3/1B4Bb
Reprints: 608 FIDE Album 1977-1979
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: A.Buchanan, 2021-08-01 more...
1) 1. ... Lxb7 2. Le5 Lc8 3. Kd5 Lxd7 4. Ke4 Lc6#
2) 1. ... Th3 2. Ld2 Txh4 3. Kd3 Tf4 4. Ke3 Tf3#
NL:
1. ... Tf1 2. Kd3 Tf2 3. Sf3 Lb5+ 4. Ke3 Txe2#
2) 1. ... Th3 2. Ld2 Txh4 3. Kd3 Tf4 4. Ke3 Tf3#
NL:
1. ... Tf1 2. Kd3 Tf2 3. Sf3 Lb5+ 4. Ke3 Txe2#
Yuri Bilokin: correction +bQg4, +bPa6, -bNh4, -bPh2 8/1b1p4/p1Bn4/8/2kp1bq1/5R2/4p3/7K (3+9) h#4 0.2.1…
1...Rg3 2.Bd2 Rxg4 3.Kd3 Rf4 4.Ke3 Rf3# (MM)
1...Bxb7 2.Be5 Bc8 3.Kd5 Bxd7 4.Ke4 Bc6# (MM)
Areal cycle (wB, with captures, 4)
Areal cycle (wR, with captures, 4)
Exchange of functions (wRf3/wBc6, Mate / Passive guard)
Long-trip (wB, 4). Long-trip (wR, 4)
Model mate × 2 (2023-05-08)
comment
1...Rg3 2.Bd2 Rxg4 3.Kd3 Rf4 4.Ke3 Rf3# (MM)
1...Bxb7 2.Be5 Bc8 3.Kd5 Bxd7 4.Ke4 Bc6# (MM)
Areal cycle (wB, with captures, 4)
Areal cycle (wR, with captures, 4)
Exchange of functions (wRf3/wBc6, Mate / Passive guard)
Long-trip (wB, 4). Long-trip (wR, 4)
Model mate × 2 (2023-05-08)
comment
Keywords: Pure Round Trip
Genre: h#
FEN: 8/1b1p4/2Bn4/8/2kp1b1n/5R2/4p2p/7K
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
Genre: h#
FEN: 8/1b1p4/2Bn4/8/2kp1b1n/5R2/4p2p/7K
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 more...
a) 1. Dxe4 La7 2. Dxe3+ Kb4 3. Dxf2 Lc6+ 4. Df3 Lxf3#
b) 1. Dxf2 Lc6 2. Dxe3+ Kb5 3. Dxe4 La7 4. Df3 Lxf3#
b) 1. Dxf2 Lc6 2. Dxe3+ Kb5 3. Dxe4 La7 4. Df3 Lxf3#
Keywords: Pure Round Trip
Genre: h#
FEN: 1Br2b2/1pp5/p2r4/2K5/B3P3/1b2Pqnp/4PPkp/5n2
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-25 more...
Genre: h#
FEN: 1Br2b2/1pp5/p2r4/2K5/B3P3/1b2Pqnp/4PPkp/5n2
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-25 more...
1) 1. Lc6 De8 2. Kb7 Dxc6+ 3. Ka6 Da8#
2) 1. Ld5 Dd8+ 2. Kb7 Dxd5+ 3. Ka6 Da8#
3) 1. Le4 Da4 2. Kb7 Dxe4+ 3. Ka6 Da8#
4) 1. Lf3 Df8 2. Kb7 Dxf3+ 3. Ka6 Da8#
5) 1. Lg2 Dg8 2. Kb7 Dxg2+ 3. Ka6 Da8#
6) 1. e5 Dh8 2. Kb7 Dxh1+ 3. Ka6 Da8#
2) 1. Ld5 Dd8+ 2. Kb7 Dxd5+ 3. Ka6 Da8#
3) 1. Le4 Da4 2. Kb7 Dxe4+ 3. Ka6 Da8#
4) 1. Lf3 Df8 2. Kb7 Dxf3+ 3. Ka6 Da8#
5) 1. Lg2 Dg8 2. Kb7 Dxg2+ 3. Ka6 Da8#
6) 1. e5 Dh8 2. Kb7 Dxh1+ 3. Ka6 Da8#
Keywords: Pure Round Trip (D,D,D,D,D)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: Q7/2k5/1p2p3/1p6/8/K7/8/7b
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 2004-09-30 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: Q7/2k5/1p2p3/1p6/8/K7/8/7b
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 2004-09-30 more...
1. g1=D d7 2. De1 d8=T 3. Da5 Td6#
Henrik Juel: This was found independently by the two authors in response to an exercise asking for problems with a white and a black promotion
The round trip was an added attraction (2021-04-25)
comment
The round trip was an added attraction (2021-04-25)
comment
Keywords: Pure Round Trip (B)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 1K6/8/1k1P4/2p5/P7/8/6p1/8
Input: Markus Manhart, 1996-12-25
Last update: hpr, 2015-09-14 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 1K6/8/1k1P4/2p5/P7/8/6p1/8
Input: Markus Manhart, 1996-12-25
Last update: hpr, 2015-09-14 more...
1. Kd2 e4+ 2. Kd1 e5 3. Ke1 e6 4. Kd1 e7 5. Ke1 e8=D+ 6. Kd1 De2#
Yuri Bilokin: you can see 1...e4 2.Kd1 e5 3.Ke1 e6 4.Kd1 e7 5.Ke1 e8=Q+ 6.Kd1 Qe2# (2023-01-14)
comment
comment
Keywords: Excelsior white (auto key), Round Trip, Pure Round Trip (k), Tempo Move (kkk)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/8/p1p5/PpP1PR2/1K2k3
Input: Markus Manhart, 1998-02-10
Last update: hpr, 2000-10-11 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/8/p1p5/PpP1PR2/1K2k3
Input: Markus Manhart, 1998-02-10
Last update: hpr, 2000-10-11 more...
1. Ke8 Kg1 2. Kd8 Kh1 3. Kc8 Kg1 4. Kb7 Kh1 5. Ka6 Kg1 6. Ka5 Kh1 7. Ka4 Kg1 8. Kb3 Kh1 9. Kxc3 Kg1 10. Kxc4 Kh1 11. Kxc5 Kg1 12. Kd6 Kh1 13. c5 Kg1 14. c4 Kh1 15. c3 Kg1 16. c2 Kh1 17. c1=D Kg1 18. Dc6 Kh1 19. Dd7 exd7 20. e6 Kg1 21. Ke7 Kh1 22. Kf8 d8=D#
Keywords: Promotion (dD), Pure Round Trip (k)
Genre: h#
Computer test: C+ Gustav 4.1d
FEN: 5k2/2p1p1p1/2p1P1P1/2P1p3/2P5/2P1p1p1/4P1P1/5B1K
Input: Hans-Jürgen Schäfer, 1999-01-01
Last update: A.Buchanan, 2021-04-10 more...
Genre: h#
Computer test: C+ Gustav 4.1d
FEN: 5k2/2p1p1p1/2p1P1P1/2P1p3/2P5/2P1p1p1/4P1P1/5B1K
Input: Hans-Jürgen Schäfer, 1999-01-01
Last update: A.Buchanan, 2021-04-10 more...
1. ... Th3 2. Kg5 Tg3 3. Kh4 Txg4+ 4. Kh3 Th4#
Cook: NL
1. ... Kg2 2. Kf5,Ke5 Th5+ 3. Ke4 Te5+ 4. Kf4 Lg3#
Cook: NL
1. ... Kg2 2. Kf5,Ke5 Th5+ 3. Ke4 Te5+ 4. Kf4 Lg3#
Yuri Bilokin: Correction: +bpf3 8/8/5k2/8/6nR/5p2/5B2/5K2 (3+3) (2019-02-01)
Yuri Bilokin: Correction: wRh4-h5 8/8/5k2/7R/6n1/8/5B2/5K2 (3+2) (2021-04-16)
A.Buchanan: I don't know what to do here. Clearly we can't disrupt the rook square, so maybe +sBf3 is best as Yuri proposes (2021-04-16)
Yuri Bilokin: It is necessary to decide what is better to break the rook square or the Ideal mate. (2021-04-16)
A.Buchanan: Ideal mates are cheap, but Th4-h3-g3xg4-h4# is a prize. (2021-04-17)
SCHRECKE: why not: +bPh3? (2021-04-17)
A.Buchanan: @SCHRECKE because the rook's movement in a square should not be motivated by capturing, and +sBh3 also blocks wT unnecessarily from h1 & h2. This problem does not appear in WinChloe, at least not in Canadian Chess Chat under this author (who has 891 total compositions - not gone through them all). Maybe he never fixed it. One clean idea is to replace wKf1 with sBg2. This is still an ideal mate. Then put +wKa1 if you must :-) (2021-04-17)
A.Buchanan: +sBg2 & wKa1 is sound, but maybe best to rotate the board as sB threatening to promote is perhaps unfairly distracting to solvers (2021-04-18)
Olaf Jenkner: Is it not a merit? (2021-04-18)
Yuri Bilokin: Correction: wKh1, wRf3, wBd1, bKd5, bBe1, bSe3 8/8/8/3k4/8/4nR2/8/3Bb2K (3+3)
1...Rf2 2.Ke4 Re2 3.Kf3 Rxe3+ 4.Kf2 Rf3# (IM) (2021-04-18)
Adrian Storisteanu: Or, finally, a variation which uses just a bP (not bB) as Andrew suggested, and still makes use of the wK (as does Yuri's):
Bg6 Rd3 Kf1 / Kb5 Sd4 Pf4 (3+3)
1...Re3 2.Kc4 Re4 3.Kd3 Rxd4+ 4.Ke3 Rd3# (2021-04-18)
Adrian Storisteanu: Or, more centred:
Bb7 Re4 Kc2 / Kg6 Pc5 Se5 (3+3)
1...Rd4 2.Kf5 Rd5 3.Ke4 Rxe5+ 4.Kd4 Re4# (2021-04-18)
Adrian Storisteanu: (In the latest, a bPe5 -- instead of bSe5 -- is just as good...) (2021-04-19)
A.Buchanan: Busy - will check these later. But Adrian I didn’t suggest bB but sB i.e. (German) black pawn not bishop (2021-04-19)
Adrian Storisteanu: I understood you fine (but I might have misplaced the text in parentheses). (2021-04-19)
A.Buchanan: With your latest Bb7 Re4 Kc2 / Kg6 Pc5e5, once might as well remove the two black pawns and replace with wPd6 (then rotating the board by 180 degrees). But surely this is not original, and indeed P0510694 by Ugren achieves full h#4. But Yuri has already corrected P0503631 by Krikehli to achieve the same thing! Time to give up - nothing new here. (2021-04-19)
comment
Yuri Bilokin: Correction: wRh4-h5 8/8/5k2/7R/6n1/8/5B2/5K2 (3+2) (2021-04-16)
A.Buchanan: I don't know what to do here. Clearly we can't disrupt the rook square, so maybe +sBf3 is best as Yuri proposes (2021-04-16)
Yuri Bilokin: It is necessary to decide what is better to break the rook square or the Ideal mate. (2021-04-16)
A.Buchanan: Ideal mates are cheap, but Th4-h3-g3xg4-h4# is a prize. (2021-04-17)
SCHRECKE: why not: +bPh3? (2021-04-17)
A.Buchanan: @SCHRECKE because the rook's movement in a square should not be motivated by capturing, and +sBh3 also blocks wT unnecessarily from h1 & h2. This problem does not appear in WinChloe, at least not in Canadian Chess Chat under this author (who has 891 total compositions - not gone through them all). Maybe he never fixed it. One clean idea is to replace wKf1 with sBg2. This is still an ideal mate. Then put +wKa1 if you must :-) (2021-04-17)
A.Buchanan: +sBg2 & wKa1 is sound, but maybe best to rotate the board as sB threatening to promote is perhaps unfairly distracting to solvers (2021-04-18)
Olaf Jenkner: Is it not a merit? (2021-04-18)
Yuri Bilokin: Correction: wKh1, wRf3, wBd1, bKd5, bBe1, bSe3 8/8/8/3k4/8/4nR2/8/3Bb2K (3+3)
1...Rf2 2.Ke4 Re2 3.Kf3 Rxe3+ 4.Kf2 Rf3# (IM) (2021-04-18)
Adrian Storisteanu: Or, finally, a variation which uses just a bP (not bB) as Andrew suggested, and still makes use of the wK (as does Yuri's):
Bg6 Rd3 Kf1 / Kb5 Sd4 Pf4 (3+3)
1...Re3 2.Kc4 Re4 3.Kd3 Rxd4+ 4.Ke3 Rd3# (2021-04-18)
Adrian Storisteanu: Or, more centred:
Bb7 Re4 Kc2 / Kg6 Pc5 Se5 (3+3)
1...Rd4 2.Kf5 Rd5 3.Ke4 Rxe5+ 4.Kd4 Re4# (2021-04-18)
Adrian Storisteanu: (In the latest, a bPe5 -- instead of bSe5 -- is just as good...) (2021-04-19)
A.Buchanan: Busy - will check these later. But Adrian I didn’t suggest bB but sB i.e. (German) black pawn not bishop (2021-04-19)
Adrian Storisteanu: I understood you fine (but I might have misplaced the text in parentheses). (2021-04-19)
A.Buchanan: With your latest Bb7 Re4 Kc2 / Kg6 Pc5e5, once might as well remove the two black pawns and replace with wPd6 (then rotating the board by 180 degrees). But surely this is not original, and indeed P0510694 by Ugren achieves full h#4. But Yuri has already corrected P0503631 by Krikehli to achieve the same thing! Time to give up - nothing new here. (2021-04-19)
comment
Keywords: Aristocrat, Ideal mate, Pure Round Trip (T), Miniature, Minimal
Genre: h#
Computer test: (In the latest, a bPe5 -- instead of bSe5 -- is just as good...)
FEN: 8/8/5k2/8/6nR/8/5B2/5K2
Input: Markus Manhart, 1999-02-08
Last update: A.Buchanan, 2021-04-16 more...
Genre: h#
Computer test: (In the latest, a bPe5 -- instead of bSe5 -- is just as good...)
FEN: 8/8/5k2/8/6nR/8/5B2/5K2
Input: Markus Manhart, 1999-02-08
Last update: A.Buchanan, 2021-04-16 more...
1. Kf5 2. Sd3 3. Sf4 4. Kg4 5. Kf3 6. Sd5 7. Se3 8. Ke2 9. Kd3 10. Sf5 11. Sd4 12. Kxc4 13. Kd5 14. Sf3 15. Se5 16. Ke6 Se3=
Keywords: Seriesmover, Pure Round Trip (k)
Genre: Fairies
Computer test: Alybadix
FEN: 4N3/4p3/p1P1k1P1/rp2n3/pPP1R3/K7/6N1/8
Reprints: FIDE Album 1965-1967
Input: Felber, Volker, 1999-12-27
Last update: Arnold Beine, 2022-09-15 more...
Genre: Fairies
Computer test: Alybadix
FEN: 4N3/4p3/p1P1k1P1/rp2n3/pPP1R3/K7/6N1/8
Reprints: FIDE Album 1965-1967
Input: Felber, Volker, 1999-12-27
Last update: Arnold Beine, 2022-09-15 more...
1. a4 a5 2. Ta3 Ta6 3. Tb3 Tc6 4. Tb6 g6 5. Ta6 Lh6 6. Ta8 Sa6 7. Txc8 Sb4 8. Ta8 Db8 9. Ta6 Kd8 10. Tb6 cxb6 11. f3 Tc8 12. Kf2 Sc6 13. b4 Dc7 14. bxa5 Ta8 15. a6 Kc8 16. a5 Dd8 17. Kg3 Sb8
Richter H. Gruber "What a correction! Making the previously cooked R5 sound (hopefully), the author simultaneously improved it substantially : Instead of 'only' two, now we have three capture-free black circuits (Dd8, Ta8, Sb8). Everything is based on the need to capture sLc8, and it is achieved virtuously. It is not apparent that sTa8 and sSb8 have to move at all. This makes R5v clearly superior to a number of related tourney entries showing multiple switchbacks (cf. 3rd and 4th Hon. Men.). "
Richter H. Gruber "What a correction! Making the previously cooked R5 sound (hopefully), the author simultaneously improved it substantially : Instead of 'only' two, now we have three capture-free black circuits (Dd8, Ta8, Sb8). Everything is based on the need to capture sLc8, and it is achieved virtuously. It is not apparent that sTa8 and sSb8 have to move at all. This makes R5v clearly superior to a number of related tourney entries showing multiple switchbacks (cf. 3rd and 4th Hon. Men.). "
paul: Correction of P1000446 (2022-02-06)
Henrik Juel: There is a funny english error in the judge comment
He probably wanted to say that the author performed like a virtuoso, but wrote 'and it is achieved virtuously.', which has a completely different meaning (2022-02-06)
A.Buchanan: This is very impressive. (2022-02-07)
comment
Henrik Juel: There is a funny english error in the judge comment
He probably wanted to say that the author performed like a virtuoso, but wrote 'and it is achieved virtuously.', which has a completely different meaning (2022-02-06)
A.Buchanan: This is very impressive. (2022-02-07)
comment
Keywords: Unique Proof Game, Pure Round Trip (dst)
Genre: Retro
Computer test: Stelvio 1.2, 2:30min
FEN: rnkq2nr/1p1ppp1p/Pp4pb/P7/8/5PK1/2PPP1PP/1NBQ1BNR
Reprints: feenschach 141 06/2001
Input: Gerd Wilts, 2000-08-01
Last update: Reto, 2023-05-11 more...
Genre: Retro
Computer test: Stelvio 1.2, 2:30min
FEN: rnkq2nr/1p1ppp1p/Pp4pb/P7/8/5PK1/2PPP1PP/1NBQ1BNR
Reprints: feenschach 141 06/2001
Input: Gerd Wilts, 2000-08-01
Last update: Reto, 2023-05-11 more...
1. e3 f5 2. Lb5 f4 3. Lc6 dxc6 4. Se2 Dd5 5. Tg1 Df3 6. gxf3 Lh3 7. Tg6 Lf1 8. Td6 g5 9. b4 g4 10. Lb2 g3 11. Ld4 g2 12. c3 g1=D 13. Dc2 Dg5 14. Sg3 La6 15. Df5 b5 16. Kf1 exd6 17. Kg1 Dd8 18. Sf1 Lc8
Keywords: Unique Proof Game, Pronkin Theme (d), Pure Round Trip (l)
Genre: Retro
Computer test: Resolution time : 26.37 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: rnbqkbnr/p1p4p/2pp4/1p3Q2/1P1B1p2/2P1PP2/P2P1P1P/RN3NK1
Reprints: 13 64 Proof Games 2012
Input: Gerd Wilts, 2000-08-01
Last update: Gerd Wilts, 2012-12-23 more...
Genre: Retro
Computer test: Resolution time : 26.37 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: rnbqkbnr/p1p4p/2pp4/1p3Q2/1P1B1p2/2P1PP2/P2P1P1P/RN3NK1
Reprints: 13 64 Proof Games 2012
Input: Gerd Wilts, 2000-08-01
Last update: Gerd Wilts, 2012-12-23 more...
1. g4 f5 2. gxf5[=wS] d6 3. Sxe7[=wL] Lh3[=sS] 4. Lh4[=wS] Dg5[=sT] 5. Sxh3[=wL] Tg2[=sL] 6. Lfxg2[=wT] Le7[=sS] 7. Tgg1[=wL] Sf5[=sB] 8. Lf1[=wS] Se7[=sB] 9. Sg2[=wB]
Richter H. Gruber: "The most impressive of the Echecs Einstein proofgames. Specific exchange of places of Lf1/Sg1, each moving once and capturing once. The circuit of wBg2 includes one pawn move, two moves and two captures of non-pawn pieces. In sum, most pieces are back on their initial game array squares. "
Richter H. Gruber: "The most impressive of the Echecs Einstein proofgames. Specific exchange of places of Lf1/Sg1, each moving once and capturing once. The circuit of wBg2 includes one pawn move, two moves and two captures of non-pawn pieces. In sum, most pieces are back on their initial game array squares. "
Keywords: Unique Proof Game, Einstein Chess, Interchange, Pure Round Trip
Genre: Retro, Fairies
FEN: rn2k2r/ppp1p1pp/3p4/5p2/8/8/PPPPPPPP/RNBQKNBR
Input: Gerd Wilts, 2000-10-02
Last update: A.Buchanan, 2013-03-13 more...
Genre: Retro, Fairies
FEN: rn2k2r/ppp1p1pp/3p4/5p2/8/8/PPPPPPPP/RNBQKNBR
Input: Gerd Wilts, 2000-10-02
Last update: A.Buchanan, 2013-03-13 more...
1. Sc3 Sf6 2. Se4 Sd5 3. Sf6 gxf6 4. h4 Lh6 5. Th3 Kf8 6. Tb3 Kg7 7. Tb6 Dg8 8. b4 Kf8 9. Lb2 Dg3 10. Le5 Db3 11. axb3 a6 12. Ta5 Ta7 13. Tab5 a5 14. e3 a4 15. Le2 a3 16. Lh5 a2 17. Dg4 a1=D+ 18. Ke2 Dd4 19. De6 Dg4+ 20. Kd3 Dg8 21. g4 Kg7 22. g5 Dd8 23. g6 Kf8 24. g7+ Ke8 25. g8=S Lf8 26. Sh6
Pronkin-Thema mit der eingeschlossenen sD. Ein sS könnte a1 nicht mehr verlassen. Ein sT könnte h8 nicht mehr erreichen, und von a8 kann kein sT auf b3 geschlagen werden, da dazu der sBa7 zuerst nach a5 müsste und damit der wTa1 nicht mehr ohne Schlag des sBa nach b5 kann.
Pronkin-Thema mit der eingeschlossenen sD. Ein sS könnte a1 nicht mehr verlassen. Ein sT könnte h8 nicht mehr erreichen, und von a8 kann kein sT auf b3 geschlagen werden, da dazu der sBa7 zuerst nach a5 müsste und damit der wTa1 nicht mehr ohne Schlag des sBa nach b5 kann.
paul: Correction of P1000530 (2010-05-05)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 19:31:47 Stunden.
Keine Lösung: BP 24.5, BP 25.0. (2023-02-15)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 19:31:47 Stunden.
Keine Lösung: BP 24.5, BP 25.0. (2023-02-15)
comment
Keywords: Unique Proof Game, Phoenix (S), Pronkin Theme (d), Pure Round Trip (k), Tempo Loss (b1)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nbqkb1r/rppppp1p/1R2Qp1N/1R1nB2B/1P5P/1P1KP3/2PP1P2/6N1
Reprints: H33 FIDE Album Annexe 1998-2000 2009
Input: Gerd Wilts, 2000-10-15
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nbqkb1r/rppppp1p/1R2Qp1N/1R1nB2B/1P5P/1P1KP3/2PP1P2/6N1
Reprints: H33 FIDE Album Annexe 1998-2000 2009
Input: Gerd Wilts, 2000-10-15
Last update: Silvio Baier, 2023-03-02 more...
1. e3 Sf6 2. e4 Sxe4 3. Sa3 Sc3 4. Tb1 Sxb1 5. Sb5 Sa3 6. Sc3 Sc4 7. Sb1
Mario Richter: brauchen wir wirklich zwei verschiedene Keywords - hier "Tempoverlustmanöver", bei z.B. P1007491 hingegen "Loss of tempo"? (2018-10-21)
Henrik Juel: Good point, Mario
Other things in the never-ending Keyword discussion include:
Tempoverlustmanöver is currently called the same in english and french, and has no definitions
Loss of tempo (Tempoverlust in german) is defined as
'With White to play, a sequence of moves to reach the same position with Black to play. (Help game, abbr .: TV)'
which makes little sense in proof games
In this problem [Pe2] goes e2-e3-e4 ('wasting' a move)
In P1007491 [Pc2] similarly goes c2-c3-c4-... and [Lc8] goes (among other things) c8-b7-a6-c8 ('triangulation') (2018-10-21)
Henrik Juel: There are many solutions in 6.0 moves, like
1.Sb1-c3 Sg8-f6 2.Pe2-e4 Sf6xe4 3.Sc3-a4 Se4-c3 4.Ra1-b1 Sc3xb1 5.Sa4-c3 Sb1-a3 6.Sc3-b1 Sa3-c4
Correction: Change the stipulation to
BP in exactly 6.5 (2024-03-10)
comment
Henrik Juel: Good point, Mario
Other things in the never-ending Keyword discussion include:
Tempoverlustmanöver is currently called the same in english and french, and has no definitions
Loss of tempo (Tempoverlust in german) is defined as
'With White to play, a sequence of moves to reach the same position with Black to play. (Help game, abbr .: TV)'
which makes little sense in proof games
In this problem [Pe2] goes e2-e3-e4 ('wasting' a move)
In P1007491 [Pc2] similarly goes c2-c3-c4-... and [Lc8] goes (among other things) c8-b7-a6-c8 ('triangulation') (2018-10-21)
Henrik Juel: There are many solutions in 6.0 moves, like
1.Sb1-c3 Sg8-f6 2.Pe2-e4 Sf6xe4 3.Sc3-a4 Se4-c3 4.Ra1-b1 Sc3xb1 5.Sa4-c3 Sb1-a3 6.Sc3-b1 Sa3-c4
Correction: Change the stipulation to
BP in exactly 6.5 (2024-03-10)
comment
Keywords: Unique Proof Game, Pure Round Trip (S), Homebase (w), Tempo Losing Manouevre (weP)
Genre: Retro
Computer test: (Natch 1.3 Copyright (C) 1997-1999 Pascal Wassong)
FEN: rnbqkb1r/pppppppp/8/8/2n5/8/PPPP1PPP/1NBQKBNR
Reprints: (2) Schweizerische Schachzeitung 05/2005
Input: Gerd Wilts, 2001-02-11
Last update: A.Buchanan, 2024-03-11 more...
Genre: Retro
Computer test: (Natch 1.3 Copyright (C) 1997-1999 Pascal Wassong)
FEN: rnbqkb1r/pppppppp/8/8/2n5/8/PPPP1PPP/1NBQKBNR
Reprints: (2) Schweizerische Schachzeitung 05/2005
Input: Gerd Wilts, 2001-02-11
Last update: A.Buchanan, 2024-03-11 more...
1. d4 c5 2. d5 Db6 3. Dd4 Db3 4. axb3 f5 5. Ta6 f4 6. Tc6 f3 7. Sxf3 e5 8. Sxe5 a5 9. Sxd7 a4 10. bxa4 h5 11. b3 h4 12. Lb2 h3 13. Dh4 Sa6 14. f4 Sb4 15. Kf2 Sd3+ 16. Kg1 Se5 17. Sb8 Sd7 18. Sa6 Sb8
Rundlauf des sSb8 in 6 Zügen.
Rundlauf des sSb8 in 6 Zügen.
Henrik Juel: Natch 3.1 found the solution quickly, but did not finish in more than an hour (2018-12-16)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 nach nur 1 Sekunde. (2023-02-09)
Henrik Juel: and no solution in 17.5 moves, so C++ Stelvio 1.0 (2023-02-09)
Henrik Juel: Fine motivation for the round trip: making room for white Sd7-b8-a6 (2023-02-09)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 nach nur 1 Sekunde. (2023-02-09)
Henrik Juel: and no solution in 17.5 moves, so C++ Stelvio 1.0 (2023-02-09)
Henrik Juel: Fine motivation for the round trip: making room for white Sd7-b8-a6 (2023-02-09)
comment
Keywords: Unique Proof Game, Pure Round Trip (s)
Genre: Retro
Computer test: Stelvio 1.0
FEN: rnb1kbnr/1p4p1/N1R5/2pP4/P4P1Q/1P5p/1BP1P1PP/1N3BKR
Reprints: feenschach 153 10-12/2003
(H) Quartz 28 07-09/2005
Input: Gerd Wilts, 2002-03-31
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: rnb1kbnr/1p4p1/N1R5/2pP4/P4P1Q/1P5p/1BP1P1PP/1N3BKR
Reprints: feenschach 153 10-12/2003
(H) Quartz 28 07-09/2005
Input: Gerd Wilts, 2002-03-31
Last update: Silvio Baier, 2023-03-02 more...
1. h4 f5 2. Th3 f4 3. Tb3 f3 4. Tb6 axb6 5. h5 Ta3 6. h6 Td3 7. a4 gxh6 8. a5 bxa5 9. Ta4 b6 10. Td4 Lb7 11. Td6 exd6 12. e3 Se7 13. De2 Sc8 14. Kd1 Le7 15. De1 0-0 16. Le2 Kh8 17. Df1 fxe2+ 18. Ke1 Tf3 19. Sa3 Th3 20. g3 Lh1 21. Dg2 Dg8 22. Dc6 Db3 23. cxb3 Ld8 24. Dc2 c6 25. Dd1 Lc7
7zügiges Tempoverlustmanöver der wD, die kompliziert auf dem Königsflügel freigeschleust werden muss.
7zügiges Tempoverlustmanöver der wD, die kompliziert auf dem Königsflügel freigeschleust werden muss.
Keywords: Unique Proof Game, Tempo Loss, Pure Round Trip (D), Switchback (K), Castling
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nn4k/2bp3p/1ppp3p/p7/8/NP1rP1Pr/1P1PpP2/2BQK1Nb
Reprints: Best Problems 47 07/2008
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-05-14 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nn4k/2bp3p/1ppp3p/p7/8/NP1rP1Pr/1P1PpP2/2BQK1Nb
Reprints: Best Problems 47 07/2008
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-05-14 more...
45 - P1004214
Gianni Donati
R0100c StrateGems 20 10-12/2002
5.-7. Preis ex aequo
(11+15) C+
BP in 22,5
Gianni Donati
R0100c StrateGems 20 10-12/2002
5.-7. Preis ex aequo
(11+15) C+
BP in 22,5
1. Sf3 e5 2. Sd4 exd4 3. Sc3 dxc3 4. dxc3 g6 5. Le3 Lh6 6. Lb6 axb6 7. Dd4 Ta5 8. Td1 Lc1 9. Td3 Tg5 10. Tf3 d5 11. Tf6 Lg4 12. Td6 Lxe2 13. Td7 La6 14. Lb5 h5 15. Lc6 Sxc6 16. a4 Db8 17. Te7+ Kd8 18. Te4 h4 19. De5 h3 20. Tb4 Th4 21. Tb3 Sb4 22. Ta3 c6 23. Ta1
wTa1 wandert nach d7 zum Schachschutz für den wLf1. 12zügier Rundlauf des wTa1.
wTa1 wandert nach d7 zum Schachschutz für den wLf1. 12zügier Rundlauf des wTa1.
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 5 Sekunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
more ...
comment
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
more ...
comment
Keywords: Unique Proof Game, Pure Round Trip (T), Check Protection
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1q1k2n1/1p3p2/bpp3p1/3pQ1r1/Pn5r/2P4p/1PP2PPP/R1b1K2R
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-10-05
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1q1k2n1/1p3p2/bpp3p1/3pQ1r1/Pn5r/2P4p/1PP2PPP/R1b1K2R
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-10-05
Last update: Silvio Baier, 2023-03-02 more...
1. d4 Sc6 2. Kd2 Se5 3. Ke3 Sf3 4. Sd2 Sxg1 5. f3 c6 6. Kf2 Db6 7. Ke1 Db3 8. axb3 f5 9. Ta5 f4 10. Tf5 d6 11. Txf8+ Kd7 12. Td8+ Ke6 13. Td7 Kf7 14. Tc7 Ke8
Rundlauf der beide KK.
Rundlauf der beide KK.
Keywords: Unique Proof Game, Pure Round Trip (Kk)
Genre: Retro
Computer test: Resolution time : 1 mn 13.30 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: r1b1k1nr/ppR1p1pp/2pp4/8/3P1p2/1P3P2/1PPNP1PP/2BQKBnR
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2003-02-01
Last update: Mario Richter, 2022-07-27 more...
Genre: Retro
Computer test: Resolution time : 1 mn 13.30 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: r1b1k1nr/ppR1p1pp/2pp4/8/3P1p2/1P3P2/1PPNP1PP/2BQKBnR
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2003-02-01
Last update: Mario Richter, 2022-07-27 more...
1. e3 a5 2. Ld3 Sa6 3. Lg6 hxg6 4. h4 Th5 5. Sh3 Tb5 6. h5 Txb2 7. h6 Txa2 8. hxg7 Ta4 9. La3 Th4 10. Lxe7 Th8 11. Lg5 Df6 12. gxf8=T+ Ke7 13. Txc8 Txc8 14. 0-0 Tf8 15. Kh2 Ke8 16. Kg3 Dd8 17. Sg1
Henrik Juel: Natch 3.1 did little in an hour (2018-12-17)
Moldenhauer: Computerprüfung: C+ Euclide 1.11 5 Std. 32 Min. nur eine Lösung!
Keine Lösung bei BP 15.5 in 21 Min. und BP 16.0 in 45 Min.
Notation OK. (2022-12-21)
more ...
comment
Moldenhauer: Computerprüfung: C+ Euclide 1.11 5 Std. 32 Min. nur eine Lösung!
Keine Lösung bei BP 15.5 in 21 Min. und BP 16.0 in 45 Min.
Notation OK. (2022-12-21)
more ...
comment
Keywords: Ceriani-Frolkin Theme (T), Unique Proof Game, Pure Round Trip (t), Switchback (dkS)
Genre: Retro
FEN: 3qkrnr/1ppp1p2/n5p1/p5B1/8/4P1K1/2PP1PP1/RN1Q1RN1
Input: Gerd Wilts, 2003-02-01
Last update: Olaf Jenkner, 2016-09-03 more...
Genre: Retro
FEN: 3qkrnr/1ppp1p2/n5p1/p5B1/8/4P1K1/2PP1PP1/RN1Q1RN1
Input: Gerd Wilts, 2003-02-01
Last update: Olaf Jenkner, 2016-09-03 more...
1. Kg3 Ld4 2. Kh4 La7 3. Kh5 Ld4 4. Kh6 La7 5. Kg7 Ld4 6. Kxf7[+sBf2] La7 7. Ke7 Ld4 8. Kd6 La7 9. Kd5 Ld4 10. Kxd4[+sLc1] La3 11. Kxe3[+sBe2] Lc1+ 12. Kf3 Lxf4[+wBf7] 13. f8=D Lb8 14. Dxf6#
Keywords: Pure Round Trip (K), Maximummer, Circe (Spiegel)
Genre: Fairies
FEN: 8/b4p2/5p2/5k2/1p3P2/2p1pK2/8/8
Input: HBae, 2003-09-27
Last update: Erich Bartel, 2017-09-08 more...
Genre: Fairies
FEN: 8/b4p2/5p2/5k2/1p3P2/2p1pK2/8/8
Input: HBae, 2003-09-27
Last update: Erich Bartel, 2017-09-08 more...
49 - P1011888
Michel Caillaud
Reto Aschwanden
Retros mailing list 31/12/2003
5. Preis
Gianni Donati 50th Jubilee Tourney
(15+14) C+
BP in 24,5
Michel Caillaud
Reto Aschwanden
Retros mailing list 31/12/2003
5. Preis
Gianni Donati 50th Jubilee Tourney
(15+14) C+
BP in 24,5
1. c4 e5 2. c5 Ld6 3. cxd6 c5 4. Db3 c4 5. Dh3 c3 6. d3 c2 7. Ld2 c1=L 8. b4 Lb2 9. Sa3 Lc3 10. 0-0-0 g5 11. Le1 Ld2+ 12. Kb2 g4 13. Tc1 g3 14. Txc8 gxf2 15. Tc3 Dh4 16. g3 Sf6 17. Lg2 f1=L 18. e3 Le2 19. Sc4 Lf3 20. Se2 Tg8 21. Tf1 Tg6 22. Lh1 Lg2 23. Tf3 Lf1 24. Ka3 Lc1+ 25. Sb2
Matching squares traced by the promoted Bishops! That this is managed without extra-set pieces is astounding. (PR Gianni Donati)
Cook: 1. c4 e5 2. c5 Ld6 3. cxd6 g5 4. d3 g4 5. e3 g3 6. Dg4 c5 7. Sc3 c4 8. Sa4 c3 9. Ld2 Sh6 10. 0-0-0 c2 11. b4 Tg8 12. Kb2 gxf2 13. g3 Tg6 14. Lg2 f1=L 15. Ka3 c1=L+ 16. Sb2 Le2 17. Le1 Ld2 18. Tc1 Sg8 19. Txc8 Lc1 20. Tc3 Lf3 21. Se2 Dh4 22. Tf1 Sf6 23. Lh1 Lg2 24. Tf3 Lf1 25. Dh3
Matching squares traced by the promoted Bishops! That this is managed without extra-set pieces is astounding. (PR Gianni Donati)
Cook: 1. c4 e5 2. c5 Ld6 3. cxd6 g5 4. d3 g4 5. e3 g3 6. Dg4 c5 7. Sc3 c4 8. Sa4 c3 9. Ld2 Sh6 10. 0-0-0 c2 11. b4 Tg8 12. Kb2 gxf2 13. g3 Tg6 14. Lg2 f1=L 15. Ka3 c1=L+ 16. Sb2 Le2 17. Le1 Ld2 18. Tc1 Sg8 19. Txc8 Lc1 20. Tc3 Lf3 21. Se2 Dh4 22. Tf1 Sf6 23. Lh1 Lg2 24. Tf3 Lf1 25. Dh3
Henrik Juel: an important keyword is missing: Donati theme
same in (some of) P1011889-P1011929 (2018-12-18)
Henrik Juel: Natch 3.1 found nothing in half an hour (2018-12-18)
Michel Caillaud: Reprint : H71 p.585, FIDE Album 2001-03
Cooked using Jacobi 0.7.5 with constraints :
1.c4 e5 2.c5 Ld6 3.cxd6 g5 4.d3 g4 5.e3 g3 6.Dg4 c5 7.Sc3 c4 8.Sa4 c3 9.Ld2 Sh6 10.0-0-0 c2 11.b4 Tg8 12.Kb2 gxf2 13.g3 Tg6 14.Lg2 f1=L 15.Ka3 c1=L+ 16.Sb2 Le2 17.Le1 Ld2 18.Tc1 Sg8 19.Txc8 Lc1 20.Tc3 Lf3 21.Se2 Dh4 22.Tf1 Sf6 23.Lh1 Lg2 24.Tf3 Lf1 25.Dh3
Correction : sTg6 to g4 (21...Tg4 instead of 21...Tg6 in the solution)
With the set of constraints used to uncork the cook, Jacobi 0.7.5 finds only the intended solution... (2021-09-20)
Michel Caillaud: The correction sTg6 to g4 was published in StrateGems 99 (p.138, sept. 2022)
It is C+ by Stelvio 0.93 (2022-12-18)
comment
same in (some of) P1011889-P1011929 (2018-12-18)
Henrik Juel: Natch 3.1 found nothing in half an hour (2018-12-18)
Michel Caillaud: Reprint : H71 p.585, FIDE Album 2001-03
Cooked using Jacobi 0.7.5 with constraints :
1.c4 e5 2.c5 Ld6 3.cxd6 g5 4.d3 g4 5.e3 g3 6.Dg4 c5 7.Sc3 c4 8.Sa4 c3 9.Ld2 Sh6 10.0-0-0 c2 11.b4 Tg8 12.Kb2 gxf2 13.g3 Tg6 14.Lg2 f1=L 15.Ka3 c1=L+ 16.Sb2 Le2 17.Le1 Ld2 18.Tc1 Sg8 19.Txc8 Lc1 20.Tc3 Lf3 21.Se2 Dh4 22.Tf1 Sf6 23.Lh1 Lg2 24.Tf3 Lf1 25.Dh3
Correction : sTg6 to g4 (21...Tg4 instead of 21...Tg6 in the solution)
With the set of constraints used to uncork the cook, Jacobi 0.7.5 finds only the intended solution... (2021-09-20)
Michel Caillaud: The correction sTg6 to g4 was published in StrateGems 99 (p.138, sept. 2022)
It is C+ by Stelvio 0.93 (2022-12-18)
comment
Keywords: Unique Proof Game, Round Trip, Pure Round Trip (ll), Obvious promotion (l), Promotion (ll), Donati Theme
Genre: Retro
Computer test: Resolution time: Natch 3.3: ---, Euclide 1.11: ---, Stelvio 1.14: 15:10min
FEN: rn2k3/pp1p1p1p/3P1n2/4p3/1P4rq/K1RPPRPQ/PN2N2P/2b1Bb1B
Input: Gerd Wilts, 2004-01-01
Last update: Silvio Baier, 2023-08-15 more...
Genre: Retro
Computer test: Resolution time: Natch 3.3: ---, Euclide 1.11: ---, Stelvio 1.14: 15:10min
FEN: rn2k3/pp1p1p1p/3P1n2/4p3/1P4rq/K1RPPRPQ/PN2N2P/2b1Bb1B
Input: Gerd Wilts, 2004-01-01
Last update: Silvio Baier, 2023-08-15 more...
1. h4 Sf6 2. Th3 Sd5 3. Tc3 f6 4. Tc5 Kf7 5. c4 Ke6 6. Dc2 Ke5 7. Df5+ Kd4 8. d3 a5 9. Lf4 Ta6 10. Sd2 Te6 11. Ld6 Sb4 12. f4 S4c6 13. Kf2 Se5 14. Kg3 Sf7 15. Kg4 Sh6+ 16. Kh5 Sg8 17. g4 h6 18. Kg6 Ke3 19. h5 Kf2 20. Sh3+ Kg3 21. Sf2 Kh4 22. Sh1 De8+
8zügiger Rundlauf des sSg8 zwecks Schachschutz auf d5.
8zügiger Rundlauf des sSg8 zwecks Schachschutz auf d5.
Keywords: Unique Proof Game, Pure Round Trip (s), Check Protection, Capture-free
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.0 34 Sekunden. Keine Lösung: BP 21.0, BP 21.5.
FEN: 1nb1qbnr/1pppp1p1/3BrpKp/p1R2Q1P/2P2PPk/3P4/PP1NP3/R4B1N
Input: Gerd Wilts, 2004-03-13
Last update: A.Buchanan, 2023-03-13 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.0 34 Sekunden. Keine Lösung: BP 21.0, BP 21.5.
FEN: 1nb1qbnr/1pppp1p1/3BrpKp/p1R2Q1P/2P2PPk/3P4/PP1NP3/R4B1N
Input: Gerd Wilts, 2004-03-13
Last update: A.Buchanan, 2023-03-13 more...
1. b4 Sh6 2. Lb2 Tg8 3. Lf6 gxf6 4. Sc3 Tg3 5. Tb1 Th3 6. g4 Sa6 7. Lg2 Tb8 8. Lc6 bxc6 9. g5 Tb5 10. g6 Tbh5 11. b5 Sg4 12. b6 Lh6 13. Tb5 Sb4 14. Tg5 La6 15. b7 Lb5 16. b8=L a6 17. La7 Da8 18. Le3 c5 19. g7 Dg2 20. g8=L Sc6 21. Tg7 Lg5 22. Sf3 h6 23. Lh7 Sb8 24. Le4 f5 25. Lb7 Sf6 26. Sd5 Sg8
Cook: 1. Sb1-c3 b7-b6 2. Ta1-b1 Lc8-a6 3. b2-b4 La6-d3 4. b4-b5 Dd8-c8
5. Tb1-b4 Sb8-a6 6. Tb4-c4 Ta8-b8 7. Tc4-c5 b6xc5 8. Lc1-b2 Tb8-b6
9. g2-g4 Tb6-h6 10. b5-b6 Th6-h3 11. b6-b7 Sg8-h6 12. b7-b8=T Th8-g8
13. Tb8-b6 Sa6-b8 14. Lf1-g2 Dc8-a6 15. Tb6-f6 g7xf6 16. Lg2-b7 Tg8-g5
17. Sc3-d5 Tg5-h5 18. g4-g5 Ld3-b5 19. g5-g6 f6-f5 20. g6-g7 Da6-g6
21. Lb2-d4 Dg6-g2 22. g7-g8=T a7-a6 23. Tg8-g3 Sh6-g8 24. Ld4-e3 Lf8-h6
25. Tg3-g7 Lh6-g5 26. Sg1-f3 h7-h6
Cook: 1. Sb1-c3 b7-b6 2. Ta1-b1 Lc8-a6 3. b2-b4 La6-d3 4. b4-b5 Dd8-c8
5. Tb1-b4 Sb8-a6 6. Tb4-c4 Ta8-b8 7. Tc4-c5 b6xc5 8. Lc1-b2 Tb8-b6
9. g2-g4 Tb6-h6 10. b5-b6 Th6-h3 11. b6-b7 Sg8-h6 12. b7-b8=T Th8-g8
13. Tb8-b6 Sa6-b8 14. Lf1-g2 Dc8-a6 15. Tb6-f6 g7xf6 16. Lg2-b7 Tg8-g5
17. Sc3-d5 Tg5-h5 18. g4-g5 Ld3-b5 19. g5-g6 f6-f5 20. g6-g7 Da6-g6
21. Lb2-d4 Dg6-g2 22. g7-g8=T a7-a6 23. Tg8-g3 Sh6-g8 24. Ld4-e3 Lf8-h6
25. Tg3-g7 Lh6-g5 26. Sg1-f3 h7-h6
paul: First 22.5 moves tested with Euclide 1.11 (~11h) (2017-12-29)
Henrik Juel: Now things are OK, I think
Earlier the solution given was for a BP in 19, starting 1.b4 c5 (2017-12-29)
Olaf Jenkner: Yes, I overlooked the date of the first comment. I would not have asked. (2017-12-29)
more ...
comment
Henrik Juel: Now things are OK, I think
Earlier the solution given was for a BP in 19, starting 1.b4 c5 (2017-12-29)
Olaf Jenkner: Yes, I overlooked the date of the first comment. I would not have asked. (2017-12-29)
more ...
comment
Keywords: Unique Proof Game, Pure Round Trip
Genre: Retro
Computer test: Reto: Cooked by Stelvio 1.11
FEN: 1n2k1n1/1BppppR1/p6p/1bpN1pbr/8/4BN1r/P1PPPPqP/3QK2R
Reprints: feenschach 153, p. 191, 10-12/2003
H16 FIDE Album Annexe 1995-1997 2004
Input: Gerd Wilts, 2004-08-06
Last update: Mario Richter, 2023-04-01 more...
Genre: Retro
Computer test: Reto: Cooked by Stelvio 1.11
FEN: 1n2k1n1/1BppppR1/p6p/1bpN1pbr/8/4BN1r/P1PPPPqP/3QK2R
Reprints: feenschach 153, p. 191, 10-12/2003
H16 FIDE Album Annexe 1995-1997 2004
Input: Gerd Wilts, 2004-08-06
Last update: Mario Richter, 2023-04-01 more...
1. Da1-a8! droht 2. Sf2-g4+ Ke5-e4 3. Sd5-c3#, 3. Sd5-f6#
1. ... Sd4-b3,S~ 2. Da8-e8+ Ke5-d4,Kxd5 3. De8-e4#
1. ... Sd4-e6 2. Da8-h8+ Se6-g7 3. Dh8-h1 Lc4xd5 4. Dh1-a1#
1. ... Lf4-c1,Lf~ 2. Da8-e8+ Sd4-e6 3. De8xe6+ Ke5-d4,Kxd5 4. De6-e4#
1. ... Lf4-g5 2. Sf2-g4+ Ke5-e4 3. Sd5-f6+ Ke4-f4 4. Sf6-h5#
1. ... d3-d2 2. Da8-e8+ Sd4-e6 3. De8xe6+ Ke5-d4,Kxd5 4. De6-e4#
Thematurnier 1901: Verlangt war der Rundlauf der wD über alle vier Eckfelder.
1. ... Sd4-b3,S~ 2. Da8-e8+ Ke5-d4,Kxd5 3. De8-e4#
1. ... Sd4-e6 2. Da8-h8+ Se6-g7 3. Dh8-h1 Lc4xd5 4. Dh1-a1#
1. ... Lf4-c1,Lf~ 2. Da8-e8+ Sd4-e6 3. De8xe6+ Ke5-d4,Kxd5 4. De6-e4#
1. ... Lf4-g5 2. Sf2-g4+ Ke5-e4 3. Sd5-f6+ Ke4-f4 4. Sf6-h5#
1. ... d3-d2 2. Da8-e8+ Sd4-e6 3. De8xe6+ Ke5-d4,Kxd5 4. De6-e4#
Thematurnier 1901: Verlangt war der Rundlauf der wD über alle vier Eckfelder.
Keywords: Brian Stephenson Collection (28916), Four corners (wD), Pure Round Trip (D), Model mate
Genre: n#
Computer test: Popeye 4.67
FEN: 8/3B4/1K1p4/2pNk3/2bn1b2/3p4/5N2/Q7
Reprints: 2870 Leipziger Illustrirte Zeitung 01/05/1902
8 Gazette de Lausanne 06/03/1932
431 Arbeiter-Zeitung (Wien) 05/11/1933
Politiek en Cultuur 04/1937
19 Schach-Express , p. 12, 01/04/1947
406 Freie Presse (Chemnitz) 17/10/1964
85 Schach ohne Partner [Grasemann] , p. 94, 1977
1285 Szachy 03/1978
4a-1767 2345 Chess Problems 1997
247 Versunkene Schätze , p. 109, 1998
8 Schachexpress (DBSB) 12/2011
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-02-22 more...
Genre: n#
Computer test: Popeye 4.67
FEN: 8/3B4/1K1p4/2pNk3/2bn1b2/3p4/5N2/Q7
Reprints: 2870 Leipziger Illustrirte Zeitung 01/05/1902
8 Gazette de Lausanne 06/03/1932
431 Arbeiter-Zeitung (Wien) 05/11/1933
Politiek en Cultuur 04/1937
19 Schach-Express , p. 12, 01/04/1947
406 Freie Presse (Chemnitz) 17/10/1964
85 Schach ohne Partner [Grasemann] , p. 94, 1977
1285 Szachy 03/1978
4a-1767 2345 Chess Problems 1997
247 Versunkene Schätze , p. 109, 1998
8 Schachexpress (DBSB) 12/2011
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-02-22 more...
1. Ld6! c5 2. Lxc5 Kf4 3. Ld4 Kg5 4. Le5 Kh6 5. Lf4#
4. ... Kh4 5. Lf6#
Kleinster Rundlauf eines weißen Läufers, der unterwegs einen schwarzen Bauern vertilgt, im Achtsteiner — hübsch.
4. ... Kh4 5. Lf6#
Kleinster Rundlauf eines weißen Läufers, der unterwegs einen schwarzen Bauern vertilgt, im Achtsteiner — hübsch.
Keywords: Brian Stephenson Collection (35695), Model mate, Pure Round Trip (L)
Genre: n#
Computer test: SCHRECKE: Gustav 4.1d
FEN: 8/5K2/2p3B1/4B1k1/6p1/6p1/6P1/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-03 more...
Genre: n#
Computer test: SCHRECKE: Gustav 4.1d
FEN: 8/5K2/2p3B1/4B1k1/6p1/6p1/6P1/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-03 more...
1. g4 d5 2. g5 Lg4 3. Lg2 f5 4. Le4 Kf7 5. Ld3 Kg6 6. Lb5 Kh5 7. Le8+ Kh4 8. Lh5 g6 9. Kf1 Lg7 10. Kg2 Le5 11. Df1 Lg3 12. f4 Sf6 13. Df3 Dg8 14. De4 dxe4 15. Sh3 Dc4 16. Tf1 Td8 17. Tf3 Se8 18. Ta3 Td3 19. Sc3 Tf3 20. Sd5 Tf1 21. Sf6 Txc1 22. Sg8 Th1 23. Tf1 Sd7 24. Tff3 Sb6 25. Tfb3 Sc8 26. e3 Ld1 27. Le2 b6 28. Lf1
Henrik Juel: Natch 3.1 did hardly anything in almost an hour (2018-12-17)
Henrik Juel: Same after 4 hours (2018-12-17)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 120:10:08 Stunden. (hhh:mm:ss)
Keine Lösung: BP 26.5, BP 27.0. (2023-04-06)
Henrik Juel: Thanks, Moldenhauer
Your computer is very patient...
120 hours = 5 days! (2023-04-06)
comment
Henrik Juel: Same after 4 hours (2018-12-17)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 120:10:08 Stunden. (hhh:mm:ss)
Keine Lösung: BP 26.5, BP 27.0. (2023-04-06)
Henrik Juel: Thanks, Moldenhauer
Your computer is very patient...
120 hours = 5 days! (2023-04-06)
comment
Keywords: Unique Proof Game, Pure Round Trip (L)
Genre: Retro
Computer test: Stelvio 1.2, 7:40h. The reduction in time is due to the fact that I had a lot of RAM at hand, which is very useful for this problem. There are only 8 strategies, but they take long to play.
FEN: r1n1n1N1/p1p1p2p/1p4p1/5pP1/2q1pP1k/RR2P1bN/PPPP2KP/3b1B1r
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2004-10-17
Last update: Reto, 2023-05-13 more...
Genre: Retro
Computer test: Stelvio 1.2, 7:40h. The reduction in time is due to the fact that I had a lot of RAM at hand, which is very useful for this problem. There are only 8 strategies, but they take long to play.
FEN: r1n1n1N1/p1p1p2p/1p4p1/5pP1/2q1pP1k/RR2P1bN/PPPP2KP/3b1B1r
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2004-10-17
Last update: Reto, 2023-05-13 more...
55 - P1066806
Roberto Osorio
R077 Problem Paradise 10-12/2003
3. ehrende Erwähnung
(9+15) C+
BP in 23,5
Roberto Osorio
R077 Problem Paradise 10-12/2003
3. ehrende Erwähnung
(9+15) C+
BP in 23,5
1. g3 Sc6 2. Lg2 Sd4 3. Lc6 dxc6 4. Kf1 Lf5 5. Kg2 Lg6 6. Df1 Sf5 7. Kf3 Kd7 8. Ke4 Kd6 9. Kd3 Kc5+ 10. Kc3 Dd5 11. Dh3 Dxa2 12. Dxh7 Dxb1 13. Dh4 Dxc1 14. Da4 Txh2 15. Sh3 Dxh1 16. Tg1 a5 17. Da1 Kb5 18. Kb3 a4+ 19. Ka2 a3 20. Kb1 a2+ 21. Kc1 Ta3 22. Kd1 Txg3 23. Ke1 Tgg2 24. Dd1
Keywords: Unique Proof Game, Pure Round Trip (KD)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 in 10:29:19 Stunden. (hh:mm:ss) Keine Lösung: BP 23.0. Stelviodaten: 2 Seeker/16 Player 108 GB.
FEN: 5bn1/1pp1ppp1/2p3b1/1k3n2/8/7N/pPPPPPrr/3QK1Rq
Input: Gerd Wilts, 2004-10-17
Last update: A.Buchanan, 2023-07-28 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 in 10:29:19 Stunden. (hh:mm:ss) Keine Lösung: BP 23.0. Stelviodaten: 2 Seeker/16 Player 108 GB.
FEN: 5bn1/1pp1ppp1/2p3b1/1k3n2/8/7N/pPPPPPrr/3QK1Rq
Input: Gerd Wilts, 2004-10-17
Last update: A.Buchanan, 2023-07-28 more...
* 1. ... Dxc5#
1. De3+! Dd3 2. Dc1+ Dc2 3. Dxa3+ Db3 4. Dc5+ Dc4 5. a3 Dxc5#
1. De3+! Dd3 2. Dc1+ Dc2 3. Dxa3+ Db3 4. Dc5+ Dc4 5. a3 Dxc5#
Keywords: Pure Round Trip (Dd), Tempo Creation wP
Genre: s#
FEN: 8/8/P4p2/K1Q2P2/R1q5/p1k2p1p/P4R1P/N3N3
Input: Frank Müller, 2004-11-01
Last update: Marcin Banaszek, 2021-10-02 more...
Genre: s#
FEN: 8/8/P4p2/K1Q2P2/R1q5/p1k2p1p/P4R1P/N3N3
Input: Frank Müller, 2004-11-01
Last update: Marcin Banaszek, 2021-10-02 more...
1. c4 h5 2. c5 Th6 3. c6 Txc6 4. a4 Txc1 5. Ta3 c5 6. Tc3 Da5 7. Sa3 Ta1 8. Tc1 Dc3 9. f4 a5 10. f5 Ta6 11. f6 Txf6 12. Sh3 b6 13. Sf4 La6 14. Kf2 Ld3 15. Ke3 Ta2 16. Sd5 Txf1 17. h4 f5 18. Th3 Th1 19. Tf3 Th2 20. Tf1 f4+ 21. Kf2 f3 22. Ta1 Lb1 23. Th1
Rundlauf der beiden wTT.
Rundlauf der beiden wTT.
Henrik Juel: Natch 3.1 made no progress after an hour (2018-12-15)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 3 Sekunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 3 Sekunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
comment
Keywords: Unique Proof Game, Pure Round Trip (TT)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n2kbn1/3pp1p1/1p6/p1pN3p/P6P/N1q2p2/rP1PPKPr/Rb1Q3R
Reprints: feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n2kbn1/3pp1p1/1p6/p1pN3p/P6P/N1q2p2/rP1PPKPr/Rb1Q3R
Reprints: feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: Silvio Baier, 2023-03-02 more...
1. d3 c6 2. Ld2 Db6 3. La5 Db3 4. axb3 Sf6 5. Ta4 Sd5 6. Th4 Sb6 7. e4 Kd8 8. Ke2 Kc7 9. Kf3 Kd6 10. Kg3 Ke5 11. Dh5+ Ke6 12. Le2 Kd6 13. Dd5+ Kc7 14. Lh5 Kd8 15. Sf3 Ke8 16. Te1 Sc4 17. Te3 Se5 18. Se1 Sg4 19. Tf3 Sh6 20. Tf6 Sg8 21. f3
Rundläufe von sK und sSg8, um ein Tempo zu verlieren.
Rundläufe von sK und sSg8, um ein Tempo zu verlieren.
Keywords: Unique Proof Game, Pure Round Trip (sk), Tempo Loss (k9)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:46:34 Minuten (hh:mm:ss). Keine Lösung: BP 19.5, BP 20.0.
FEN: rnb1kbnr/pp1ppppp/2p2R2/B2Q3B/4P2R/1P1P1PK1/1PP3PP/1N2N3
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: A.Buchanan, 2023-03-02 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:46:34 Minuten (hh:mm:ss). Keine Lösung: BP 19.5, BP 20.0.
FEN: rnb1kbnr/pp1ppppp/2p2R2/B2Q3B/4P2R/1P1P1PK1/1PP3PP/1N2N3
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: A.Buchanan, 2023-03-02 more...
1. d3 h5 2. Lf4 Sh6 3. Ld6 exd6 4. Sc3 Dg5 5. Db1 Dc1+ 6. Sd1 g5 7. a3 Lg7 8. Da2 Lxb2 9. Dc4 f6 10. Dg4 Kf7 11. Sf3 Te8 12. Sd2 Te3 13. Sb1 Th3 14. e3 Kg6 15. Le2 Sf7 16. Lf3 Sh8 17. Lc6 dxc6 18. 0-0 c5 19. Sdc3 Sc6 20. Dd1 Lg4 21. Kh1 Le2 22. f3 Lxf1 23. Se2 g4 24. Sg1 Kg5
5zügiger Rundlauf der wD und Platzwechsel der wSS.
5zügiger Rundlauf der wD und Platzwechsel der wSS.
Keywords: Unique Proof Game, Interchange (SS), Pure Round Trip (D5), Impostor (SS)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.11 01:03:51 Stunde. (hh:mm:ss) Keine Lösung: BP 23.0, BP 23.5.
FEN: r6n/ppp5/2np1p2/2p3kp/6p1/P2PPP1r/1bP3PP/RNqQ1bNK
Input: Gerd Wilts, 2005-12-21
Last update: A.Buchanan, 2023-04-27 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.11 01:03:51 Stunde. (hh:mm:ss) Keine Lösung: BP 23.0, BP 23.5.
FEN: r6n/ppp5/2np1p2/2p3kp/6p1/P2PPP1r/1bP3PP/RNqQ1bNK
Input: Gerd Wilts, 2005-12-21
Last update: A.Buchanan, 2023-04-27 more...
1. e3 Sf6 2. Lb5 Sd5 3. Lc6 dxc6 4. Ke2 Dd6 5. Kd3 Dg3 6. hxg3 h6 7. Txh6 f5 8. Tf6 Th4 9. Se2 Tc4 10. Dh1 Tc3+ 11. bxc3 Sb6 12. La3 Sc4 13. Ld6 Sa5 14. Sa3 Sb3 15. Tb1 Sd4 16. Tb4 Se6 17. Tg4 Sd8 18. Tgg6 Sf7 19. g4 Sh6 20. Sg3 Sg8
12-zügiger Rundlauf des sSg8, der früh nach d5 spielen muß, um Schachschutz zu geben.
12-zügiger Rundlauf des sSg8, der früh nach d5 spielen muß, um Schachschutz zu geben.
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 01:13:11 Stunde.
Keine Lösung: BP 19.0, BP 19.5. (2023-03-01)
comment
Keine Lösung: BP 19.0, BP 19.5. (2023-03-01)
comment
Keywords: Unique Proof Game, Pure Round Trip (s12), Check Protection
Genre: Retro
Computer test: Stelvio 1.0
FEN: rnb1kbn1/ppp1p1p1/2pB1RR1/5p2/6P1/N1PKP1N1/P1PP1PP1/7Q
Reprints: (B) Quartz 28 07-09/2005
Input: Gerd Wilts, 2006-03-12
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: rnb1kbn1/ppp1p1p1/2pB1RR1/5p2/6P1/N1PKP1N1/P1PP1PP1/7Q
Reprints: (B) Quartz 28 07-09/2005
Input: Gerd Wilts, 2006-03-12
Last update: Silvio Baier, 2023-03-02 more...
61 - P1068380
Michel Caillaud
The Problemist Supplement 2001-2002
4. ehrende Erwähnung, TT3
(15+13) C+
BP in 21,0
Michel Caillaud
The Problemist Supplement 2001-2002
4. ehrende Erwähnung, TT3
(15+13) C+
BP in 21,0
1. e4 a5 2. Ke2 Ta6 3. Kf3 Tc6 4. Kg4 Tc3 5. dxc3 Sc6 6. Le3 Sa7 7. Lc5 Sb5 8. Dd4 Sd6 9. Sd2 Sf5 10. Te1 d6 11. Te3 Le6 12. Th3 Lb3 13. Th6 gxh6 14. cxb3 Lg7 15. b4 Le5 16. Sb3 Lg3 17. hxg3 Sg7 18. Th5 Se6 19. Kh3 Sf8 20. Kh2 Sd7 21. Kh1 Sb8
10-zügiger Rundlauf des sSb8 zwecks Schachschutz auf f5
10-zügiger Rundlauf des sSb8 zwecks Schachschutz auf f5
Henrik Juel: Natch 3.1 produced little in an hour (2018-12-16)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:34:52 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.0, BP 20.5. Histogramm 44/0k. (2023-03-16)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:34:52 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.0, BP 20.5. Histogramm 44/0k. (2023-03-16)
comment
Keywords: Unique Proof Game, Pure Round Trip (s10), Check Protection
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1n1qk1nr/1pp1pp1p/3p3p/p1B4R/1P1QP3/1NP3P1/PP3PP1/5BNK
Reprints: (D) Quartz 28 07-09/2005
Input: Gerd Wilts, 2006-03-12
Last update: Silvio Baier, 2023-03-20 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1n1qk1nr/1pp1pp1p/3p3p/p1B4R/1P1QP3/1NP3P1/PP3PP1/5BNK
Reprints: (D) Quartz 28 07-09/2005
Input: Gerd Wilts, 2006-03-12
Last update: Silvio Baier, 2023-03-20 more...
1. a3 e5 2. Ta2 Lb4 3. axb4 h5 4. Ta3 h4 5. Tg3 hxg3 6. hxg3 f5 7. Th3 f4 8. gxf4 a5 9. Ta3 Th1 10. Sf3 Txf1+ 11. Kxf1 Ta6 12. Kg1 Tg6 13. Kh2 d6 14. Dh1 Lg4 15. Kg3 Sf6 16. Dh7 Th6 17. Ta1 Th1 18. Sa3 Txc1 19. Kh4 Th1+ 20. Kg5 Th3 21. Th1 Tg3 22. Dh3 e4 23. Sh4 Lc8+
Cook: 1. Sa3 a5 2. Sb5 e5 3. a3 Lb4 4. axb4 h5 5. Ta3 h4 6. Tg3 hxg3 7. hxg3 Ta6 8. Th7 Th6 9. Sf3 Th1 10. Th2 Txf1+ 11. Kxf1 Th3 12. Kg1 e4 13. Th1 f5 14. Sh4 f4 15. gxf4 Ta3 16. Kh2 Ta1 17. Kg3 Txc1 18. Kg4 Ta1 19. Dg1 Ta3 20. Dh2 Tb3 21. Sa3 Sf6+ 22. Kg5 d6 23. Dh3 Tg3+
Cook: 1. Sa3 a5 2. Sb5 e5 3. a3 Lb4 4. axb4 h5 5. Ta3 h4 6. Tg3 hxg3 7. hxg3 Ta6 8. Th7 Th6 9. Sf3 Th1 10. Th2 Txf1+ 11. Kxf1 Th3 12. Kg1 e4 13. Th1 f5 14. Sh4 f4 15. gxf4 Ta3 16. Kh2 Ta1 17. Kg3 Txc1 18. Kg4 Ta1 19. Dg1 Ta3 20. Dh2 Tb3 21. Sa3 Sf6+ 22. Kg5 d6 23. Dh3 Tg3+
Henrik Juel: Natch 3.1 did not find the solution in half an hour
Stopped at pos. 4961 (2018-12-22)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.11 14:12:45 Stunden. (hh:mm:ss)
Keine Lösung: BP22.0, BP 22.5.
Beispiel: 1.Sa3 a5 2.Sb5 e5 3.a3 Lb4 4.axb4 h5 5.Ta3 h4 6.Tg3 hxg3 7.hxg3 Ta6
8.Th7 Th6 9.Sf3 Th1 10.Th2 Txf1+ 11.Kxf1 Th3 12.Kg1 e4 13.Th1 f5
14.Sh4 f4 15.gxf4 Ta3 16.Kh2 Ta1 17.Kg3 Txc1 18.Kg4 Ta1 19.Dg1 Ta3
20.Dh2 Tb3 21.Sa3 Sf6+ 22.Kg5 d6 23.Dh3 Tg3+ (2023-03-28)
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Stopped at pos. 4961 (2018-12-22)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.11 14:12:45 Stunden. (hh:mm:ss)
Keine Lösung: BP22.0, BP 22.5.
Beispiel: 1.Sa3 a5 2.Sb5 e5 3.a3 Lb4 4.axb4 h5 5.Ta3 h4 6.Tg3 hxg3 7.hxg3 Ta6
8.Th7 Th6 9.Sf3 Th1 10.Th2 Txf1+ 11.Kxf1 Th3 12.Kg1 e4 13.Th1 f5
14.Sh4 f4 15.gxf4 Ta3 16.Kh2 Ta1 17.Kg3 Txc1 18.Kg4 Ta1 19.Dg1 Ta3
20.Dh2 Tb3 21.Sa3 Sf6+ 22.Kg5 d6 23.Dh3 Tg3+ (2023-03-28)
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Keywords: Unique Proof Game, Pure Round Trip (T)
Genre: Retro
FEN: 1nbqk3/1pp3p1/3p1n2/p5K1/1P2pP1N/N5rQ/1PPPPPP1/7R
Input: Gerd Wilts, 2006-08-14
Last update: Silvio Baier, 2023-04-05 more...
Genre: Retro
FEN: 1nbqk3/1pp3p1/3p1n2/p5K1/1P2pP1N/N5rQ/1PPPPPP1/7R
Input: Gerd Wilts, 2006-08-14
Last update: Silvio Baier, 2023-04-05 more...
1. ... c3+ 2. Kxa4 Lb5+ 3. Ka5 b4#
Letzter Zug: Ka5-b4
Letzter Zug: Ka5-b4
A.Buchanan: A small group of similar problems forces some short Round Trip across past and forward play. The last move is not uniquely defined (it may be a capture) and is not mentioned in the stipulation. However the genre includes retro. This means that an aesthetic criterion (e.g. existence of Round Trip) can define whether a composition is subject to 50 move rule or dead position rule! (2021-10-31)
comment
comment
Keywords: Pure Round Trip (k), Miniature, Rex solus
Genre: h#, Retro
Computer test: (Popeye WINDOWS-32Bit V4.05 (1708292 KB))
FEN: 8/8/2K5/8/PkB5/8/1PP5/8
Input: hpr, 2007-03-14
Last update: A.Buchanan, 2021-10-31 more...
Genre: h#, Retro
Computer test: (Popeye WINDOWS-32Bit V4.05 (1708292 KB))
FEN: 8/8/2K5/8/PkB5/8/1PP5/8
Input: hpr, 2007-03-14
Last update: A.Buchanan, 2021-10-31 more...
1. f4 d5 2. f5 Le6 3. f6 Sd7 4. fxe7 f5 5. exf8=L Se7 6. a4 Sc8 7. Ld6 Dh4 8. Lg3 0-0 9. a5 Tf6 10. a6 Tg6 11. axb7 Tg5 12. b8=D g6 13. Dxa7 Kg7 14. Da2 Txa2 15. Lf2 Dxf2+
Silvio Baier: 1.f4 d5 2.f5 Le6 3.f6 Sd7 4.fe f5 5.efL Se7 6.a4 Sc8 7.Ld6 Dh4 8.Lg3 0-0 9.a5 Tf6 10.a6 Tg6 11.ab Tg5 12.b8D g6 13.D:a7 Kg7 14.Da2 T:a2 15.Lf2 D:f2+
Rundläufe zweier Bauern mit anschließendem Schlag - damit auch Ceriani-Frolkin(DL); C+ (Euclide 0.95) (2010-02-16)
paul: QB Prentos theme (2020-11-29)
comment
Rundläufe zweier Bauern mit anschließendem Schlag - damit auch Ceriani-Frolkin(DL); C+ (Euclide 0.95) (2010-02-16)
paul: QB Prentos theme (2020-11-29)
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Keywords: Unique Proof Game, Ceriani-Frolkin Theme (DL), Pure Round Trip (BB), Homebase (W)
Genre: Retro
Computer test: Euclide 0.95
FEN: 2n5/2pn2kp/4b1p1/3p1pr1/8/8/rPPPPqPP/RNBQKBNR
Input: Gerd Wilts, 2009-01-11
Last update: A.Buchanan, 2015-04-06 more...
Genre: Retro
Computer test: Euclide 0.95
FEN: 2n5/2pn2kp/4b1p1/3p1pr1/8/8/rPPPPqPP/RNBQKBNR
Input: Gerd Wilts, 2009-01-11
Last update: A.Buchanan, 2015-04-06 more...
1. Tge2! d3 2. Te4 h4 3. Tg4 d2 4. Tg2 hxg2#
2. ... d2 3. Te2 h4 4. Tg2 hxg2#
1. ... h4 2. Te4 d3 3. Tg4 d2 4. Tg2 hxg2#
2. ... d2 3. Te2 h4 4. Tg2 hxg2#
1. ... h4 2. Te4 d3 3. Tg4 d2 4. Tg2 hxg2#
Keywords: Pure Round Trip (T), Round Trip (T), Alleinunterhalter
Genre: s#
FEN: 8/8/6p1/6Pp/1p1p4/pP5p/R5RP/3Qnk1K
Reprints: (55) Deutsches Wochenschach 22/06/1919
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-01-27 more...
Genre: s#
FEN: 8/8/6p1/6Pp/1p1p4/pP5p/R5RP/3Qnk1K
Reprints: (55) Deutsches Wochenschach 22/06/1919
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-01-27 more...
1. Dh5+ Lg5 2. Dxf7+ Lf6 3. Dxd5+ Le5 4. Df3+ Txf3#
Keywords: Pure Round Trip (D)
Genre: s#
FEN: 6BN/5p2/8/R2p1k2/5b1P/5Q1K/1B2R1N1/5r2
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-02-16 more...
Genre: s#
FEN: 6BN/5p2/8/R2p1k2/5b1P/5Q1K/1B2R1N1/5r2
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-02-16 more...
1. Dh2? e4 2. Le1+ Ke3 3. ?
1. Dh1! e4 2. Le1+ Ke3 3. Dh2 exd3 4. Lf2+ Kd2 5. Dg1 dxe2#
1. Dh1! e4 2. Le1+ Ke3 3. Dh2 exd3 4. Lf2+ Kd2 5. Dg1 dxe2#
(MZ634)
.
SCHRECKE: C+, Gustav 4.1d, Brute Force
Das Satzspiel funktioniert aber nicht: 1. ... e4 2. Le1# (2020-08-27)
SCHRECKE: In seinem Buch gibt MZ kein Satzspiel an,
dafür aber den Fehlversuch 1.Dh2? e4 2.Le1+ Ke3 3.? - Weiß hat keinen Wartezug! (2020-08-27)
Felber, Volker: In seinen Originalunterlagen gibt MZ auch kein Satzspiel an. Deshalb habe ich diese Zeile aus der Lösung rausgenommen. (2021-03-25)
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.
SCHRECKE: C+, Gustav 4.1d, Brute Force
Das Satzspiel funktioniert aber nicht: 1. ... e4 2. Le1# (2020-08-27)
SCHRECKE: In seinem Buch gibt MZ kein Satzspiel an,
dafür aber den Fehlversuch 1.Dh2? e4 2.Le1+ Ke3 3.? - Weiß hat keinen Wartezug! (2020-08-27)
Felber, Volker: In seinen Originalunterlagen gibt MZ auch kein Satzspiel an. Deshalb habe ich diese Zeile aus der Lösung rausgenommen. (2021-03-25)
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Keywords: Pure Round Trip (D), Wartezug, Minimal, Dreiecksmarsch (D)
Genre: s#
FEN: 8/8/8/4p3/2R5/3P4/3kBBP1/5KQ1
Reprints: 277 Ausgewählte Schachaufgaben [Zucker] 1989
Input: HBae, 2009-02-06
Last update: Felber, Volker, 2021-03-25 more...
Genre: s#
FEN: 8/8/8/4p3/2R5/3P4/3kBBP1/5KQ1
Reprints: 277 Ausgewählte Schachaufgaben [Zucker] 1989
Input: HBae, 2009-02-06
Last update: Felber, Volker, 2021-03-25 more...
1. Db4! d4 2. Dxd4 b4 3. Dd2 b3 4. Db2 axb2#
Keywords: Pure Round Trip (D), Alleinunterhalter
Genre: s#
FEN: 8/8/8/1p1pN3/6Np/p5pk/pQ4r1/K4B2
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-11-29 more...
Genre: s#
FEN: 8/8/8/1p1pN3/6Np/p5pk/pQ4r1/K4B2
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-11-29 more...
1. La5! Sb6 2. Lxb6 a5 3. Lb3 e6 4. Lc5 exf5 5. Lb4 axb4#
1. ... Sc7 2. Lxc7 a5 3. Lb3 e6 4. Ld6 exf5 5. Lb4 axb4#
1. ... Sc7 2. Lxc7 a5 3. Lb3 e6 4. Ld6 exf5 5. Lb4 axb4#
Keywords: Pure Round Trip (L)
Genre: s#
FEN: n7/4p3/p3B3/4NP2/PB3P2/K7/PR1bk3/6Q1
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-08-28 more...
Genre: s#
FEN: n7/4p3/p3B3/4NP2/PB3P2/K7/PR1bk3/6Q1
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-08-28 more...
1. Sc4! d2 2. Sb6+ Kc6 3. Sa8+ Kd5 4. Sc7+ Ke5 5. Se8+ Kd5 6. Td6+ Ke5 7. Txf6+ Kd5 8. Td6+ Ke5 9. Tg6+ Kd5 10. Sf6+ Kc6 11. Se4+ Kd5 12. c4+ Kxc4 13. Sxd2+ Kd5 14. Td4+ cxd4#
1. ... f5? 2. Sb6+ Kc6 3. Sa8+ Kd5 4. Sc7+ Ke5 5. Se8+ Kd5 6. Td6+ Ke5 7. Tg6+ Kd5 8. Sf6+ Kc6 9. Se4+ Kd5 10. c4+ Kxc4 11. Sd2+ Kd5 12. Td4+ cxd4#
Nach 1. ... f5? geht es um zwei Züge kürzer.
Weißer Springer-Rundlauf. FA=8
1. ... f5? 2. Sb6+ Kc6 3. Sa8+ Kd5 4. Sc7+ Ke5 5. Se8+ Kd5 6. Td6+ Ke5 7. Tg6+ Kd5 8. Sf6+ Kc6 9. Se4+ Kd5 10. c4+ Kxc4 11. Sd2+ Kd5 12. Td4+ cxd4#
Nach 1. ... f5? geht es um zwei Züge kürzer.
Weißer Springer-Rundlauf. FA=8
HBae: Wirklich cook? Wieso geht 5.Td6-g6+, auf f6 steht doch ein sB. (2021-08-31)
SCHRECKE: Nach 1.Sc4! d2 2.Sb6+ Kc6 3.Sa8+ Kd5 geht nur 4.Sc7+ und nicht 4.Td6+?
Der "Cook" 4. Td6+ geht nur nach dem kurzzügigen 1. ... f5? und das ist uninteressant!
Die Aufgabe scheint also korrekt zu sein. (2021-08-31)
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SCHRECKE: Nach 1.Sc4! d2 2.Sb6+ Kc6 3.Sa8+ Kd5 geht nur 4.Sc7+ und nicht 4.Td6+?
Der "Cook" 4. Td6+ geht nur nach dem kurzzügigen 1. ... f5? und das ist uninteressant!
Die Aufgabe scheint also korrekt zu sein. (2021-08-31)
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Keywords: Pure Round Trip (S)
Genre: s#
FEN: 1BB5/8/R4p1P/2pk2p1/P5R1/1pPpKp2/1PbN1Pp1/4n3
Reprints: F81 FIDE Album 1986-1988 , p. 440,
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2023-10-29 more...
Genre: s#
FEN: 1BB5/8/R4p1P/2pk2p1/P5R1/1pPpKp2/1PbN1Pp1/4n3
Reprints: F81 FIDE Album 1986-1988 , p. 440,
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2023-10-29 more...
1. Sh5! Lxg7 2. Sxg7 h5 3. Sf5 h4 4. Sg3 hxg3#
1. ... Lxf4+ 2. Shxf4 h5 3. Se2 h4 4. Sg3 hxg3#
1. ... Lf6 2. Shxf6 h5 3. Se4 h4 4. Sg3 hxg3#
1. ... Lxf4+ 2. Shxf4 h5 3. Se2 h4 4. Sg3 hxg3#
1. ... Lf6 2. Shxf6 h5 3. Se4 h4 4. Sg3 hxg3#
Sally: Der wSg3 unternimmt drei Ausflüge in die Umgebung, welche auf seinem ursprünglichen Standpunkt enden.
S. 262; Nr.336 Rösselsprünge Siers ( Murkisch-Kuhn 2002). (2012-04-09)
SCHRECKE: C+, Gustav 4.2a, Brute Force (2022-02-03)
comment
S. 262; Nr.336 Rösselsprünge Siers ( Murkisch-Kuhn 2002). (2012-04-09)
SCHRECKE: C+, Gustav 4.2a, Brute Force (2022-02-03)
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Keywords: Pure Round Trip (S)
Genre: s#
FEN: 8/6P1/3p2Pp/3Nb3/3p1P2/3B1kNP/6pK/6B1
Reprints: 1 Rösselsprünge im Schachproblem , p. 3, 1948
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-02-06 more...
Genre: s#
FEN: 8/6P1/3p2Pp/3Nb3/3p1P2/3B1kNP/6pK/6B1
Reprints: 1 Rösselsprünge im Schachproblem , p. 3, 1948
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-02-06 more...
1. Sh5 Kd2 2. Sf6 Kc2 3. Sd5 Kd2 4. Se3 Ke2 5. Sf1 Kf2 6. Sg3 hxg3#
Keywords: Pure Round Trip (S)
Genre: s#
FEN: 8/8/8/5Pp1/6Pp/1R3PNP/2k4K/1R5B
Reprints: 15900 Deutsches Wochenschach 16/10/1921
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2020-12-09 more...
Genre: s#
FEN: 8/8/8/5Pp1/6Pp/1R3PNP/2k4K/1R5B
Reprints: 15900 Deutsches Wochenschach 16/10/1921
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2020-12-09 more...
1. Tb6! f3 2. Txf6 f2 3. Txf2+ f6 4. Tb2 axb2#
Keywords: Pure Round Trip (T)
Genre: s#
FEN: 7B/5p2/5p2/2pp4/R1nk1pN1/p7/NR6/KB6
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-11-29 more...
Genre: s#
FEN: 7B/5p2/5p2/2pp4/R1nk1pN1/p7/NR6/KB6
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-11-29 more...
1. Td3! Kb4 2. Td5 Kc4 3. Tc5+ Kb4 4. Tb5+ Kc4 5. Tbb3 b5#
Keywords: Pure Round Trip (T), Tempo Duel
Genre: s#
FEN: 8/p1PPP3/rp1K4/p3B3/P1k5/RR6/1P6/8
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-10-28 more...
Genre: s#
FEN: 8/p1PPP3/rp1K4/p3B3/P1k5/RR6/1P6/8
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-10-28 more...
* 1. ... Sf2#
1. Dd7! Ke5 2. Dc6 Kd4 3. Dc5+ Ke4 4. Dd6 Sf2#
1. Dd7! Ke5 2. Dc6 Kd4 3. Dc5+ Ke4 4. Dd6 Sf2#
Keywords: Pure Round Trip (Dk), Mutate
Genre: s#
FEN: 8/8/3Q4/1p4p1/1P2k1Pp/6pK/4p1N1/4N2n
Reprints: 823 Wolfgang Pauly. Challenge of a Legacy 2001
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-02-16 more...
Genre: s#
FEN: 8/8/3Q4/1p4p1/1P2k1Pp/6pK/4p1N1/4N2n
Reprints: 823 Wolfgang Pauly. Challenge of a Legacy 2001
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-02-16 more...
* 1. ... Txg8#
1. Sg5! Kg2 2. Sf3+ Kh3 3. Sg1+ Kh2 4. Sh3 Txg8#
2. ... Kxf1 3. Sxh4
1. ... h3 2. Sxh3
1. Sg5! Kg2 2. Sf3+ Kh3 3. Sg1+ Kh2 4. Sh3 Txg8#
2. ... Kxf1 3. Sxh4
1. ... h3 2. Sxh3
Keywords: Pure Round Trip (S)
Genre: s#
FEN: K5Rr/Pp5p/bP5P/1p3p2/1P2pP1p/4Q2N/3p1p1k/3BbR2
Reprints: 213 Encyclopedia of Chess Problems , p. 65, 2012
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-03-25 more...
Genre: s#
FEN: K5Rr/Pp5p/bP5P/1p3p2/1P2pP1p/4Q2N/3p1p1k/3BbR2
Reprints: 213 Encyclopedia of Chess Problems , p. 65, 2012
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-03-25 more...
77 - P1082153
Alfred Olaf Karlström
Dansk Skakproblem Klub 1947
2. Preis
Dansk Skakproblem Klub
(10+8) C+
s#4*
Alfred Olaf Karlström
Dansk Skakproblem Klub 1947
2. Preis
Dansk Skakproblem Klub
(10+8) C+
s#4*
* 1. ... bxc6#
1. Sd4! Kg7 2. Se6+ Kg8 3. Sd8+ Kf8 4. Sc6 bxc6#
1. Sd4! Kg7 2. Se6+ Kg8 3. Sd8+ Kf8 4. Sc6 bxc6#
Keywords: Mutate, Pure Round Trip (S)
Genre: s#
FEN: Rn3k2/1p1P4/1pNP2Pp/bK5P/PpB5/1p6/1B6/8
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-03-10 more...
Genre: s#
FEN: Rn3k2/1p1P4/1pNP2Pp/bK5P/PpB5/1p6/1B6/8
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-03-10 more...
* 1. ... Dxd8#
1. Sg4! Kg8 2. Da2+ Kf8! 3. Df2+ Kg8 4. Df7+ Kh8 5. Dh5+ Kg8 6. Sf6+ Kf8 7. Sh7+ Kg8 8. Dd5+ Kh8 9. Dd4+ Kg8 10. Sf6+ Kh8! 11. Sg4+ Kg8 12. Sh6+ Kf8 13. Da7 Dxd8#
2. ... Kh8? 3. Da1+ Kg8 4. Sh6+ Kf8 5. Da7 Dxd8#
1. Sg4! Kg8 2. Da2+ Kf8! 3. Df2+ Kg8 4. Df7+ Kh8 5. Dh5+ Kg8 6. Sf6+ Kf8 7. Sh7+ Kg8 8. Dd5+ Kh8 9. Dd4+ Kg8 10. Sf6+ Kh8! 11. Sg4+ Kg8 12. Sh6+ Kf8 13. Da7 Dxd8#
2. ... Kh8? 3. Da1+ Kg8 4. Sh6+ Kf8 5. Da7 Dxd8#
Keywords: Pure Round Trip (D)
Genre: s#
FEN: 1K1Rqk2/QR6/7N/8/4p3/4P3/8/8
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-03-16 more...
Genre: s#
FEN: 1K1Rqk2/QR6/7N/8/4p3/4P3/8/8
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2022-03-16 more...
79 - P1083495
Henrik Juel
Kevin James Begley
The Problemist 2006
(4+9) cooked
ser-=20
Platzwechselcirce
Henrik Juel
Kevin James Begley
The Problemist 2006
(4+9) cooked
ser-=20
Platzwechselcirce
1. Se5 2. Sf7 3. Sh8 4. Sxg6[+sBh8] 5. Sf8 6. Sxe6[+sBf8] 7. Sd8 8. Sxc6[+sBd8] 9. Sb8 10. Sxa6[+sBb8] 11. Sc7 12. Sa8 13. Sxb6[+sBa8] 14. Sc8 15. Sxd6[+sBc8] 16. Se8 17. Sxf6[+sBe8] 18. Sg8 19. Sxh6[+sBg8] 20. Sg4 =
Cook: 1.Se3 2.g4 3.g5 4.gxf6[+bPg5] 5.f7 6.f8=B!! 7.Kf2 8.Sg4 9.S:h6[+bPg4] 10.B:d6[+bPf8] 11.Bg3 12.Sf7 13.Sd8 14.S:e6[+bPd8] 14.Sc5 15.S:a6[+bPc5] 16.Sc7 17.Sa8 18.S:b6[+bPa8] 19.Sc4 =
Cook: 1.Se3 2.g4 3.g5 4.gxf6[+bPg5] 5.f7 6.f8=B!! 7.Kf2 8.Sg4 9.S:h6[+bPg4] 10.B:d6[+bPf8] 11.Bg3 12.Sf7 13.Sd8 14.S:e6[+bPd8] 14.Sc5 15.S:a6[+bPc5] 16.Sc7 17.Sa8 18.S:b6[+bPa8] 19.Sc4 =
Pawns reborn on their 1st rank have no legal move in this condition (unlike Circe-Parrain).
Henrik Juel: I am not a co-author of this problem, which appeared in The Problemist under Kevin's name only
In the solution section there was no mention of a cook (2021-05-17)
Henrik Juel: Kevin has pointed out a memory lapse on my part
He found a cooked problem by me from 1993 with the same idea and suggested that his 2006 problem should include me as co-author, which I accepted (2022-03-31)
Anton Baumann: "cooked" ist zu entfernen! Was soll denn hier cooked sein? (2022-04-06)
Henrik Juel: I believe that Kevin has found a cook (2022-04-06)
Kevin Begley: Norbert Geissler found this impressive cook (which Popeye does not find).
We have long known of a simple correction (I believe it's fully sound starting with wSf7, as ser-=18, but the circuit would be lost). I had hoped to reveal details of the cook (and the solver) in the publication of a correction, but time slipped away, then I stopped composing for some years. Truth be told, prospects to fully restore the intent were never likely. (2022-04-10)
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Henrik Juel: I am not a co-author of this problem, which appeared in The Problemist under Kevin's name only
In the solution section there was no mention of a cook (2021-05-17)
Henrik Juel: Kevin has pointed out a memory lapse on my part
He found a cooked problem by me from 1993 with the same idea and suggested that his 2006 problem should include me as co-author, which I accepted (2022-03-31)
Anton Baumann: "cooked" ist zu entfernen! Was soll denn hier cooked sein? (2022-04-06)
Henrik Juel: I believe that Kevin has found a cook (2022-04-06)
Kevin Begley: Norbert Geissler found this impressive cook (which Popeye does not find).
We have long known of a simple correction (I believe it's fully sound starting with wSf7, as ser-=18, but the circuit would be lost). I had hoped to reveal details of the cook (and the solver) in the publication of a correction, but time slipped away, then I stopped composing for some years. Truth be told, prospects to fully restore the intent were never likely. (2022-04-10)
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Keywords: Circe (Platzwechsel-), Pure Round Trip, Ornament, Seriesmover
Genre: Fairies
FEN: 8/8/pppppppp/8/6N1/5KPk/8/6P1
Input: Kevin Begley, 2009-03-04
Last update: Kevin Begley, 2022-04-10 more...
Genre: Fairies
FEN: 8/8/pppppppp/8/6N1/5KPk/8/6P1
Input: Kevin Begley, 2009-03-04
Last update: Kevin Begley, 2022-04-10 more...
80 - P1086718
Frank Müller
3821 Buletin Problemistic 07-12/2001
Informalturnier 2000/01
1. ehrende Erwähnung
(2+5)
#16
Frank Müller
3821 Buletin Problemistic 07-12/2001
Informalturnier 2000/01
1. ehrende Erwähnung
(2+5)
#16
1. Dd5 d3 2. Da8+ Ta3 3. Dg8+ d5 4. Dxd5+ Tb3 5. Da8+ Ta3 6. Dg8+ Tb3 7. Dd5 d6 8. Da8+ Ta3 9. Dg8+ d5 10. Dxd5+ Tb3 11. Da8+ Ta3 12. Dg8+ Tb3 13. Dd5 d2+ 14. Dxd2+ Ka1! 15. Da5+ Ta3 16. Dxa3#
Tempoverlustmanöver
Tempoverlustmanöver
Keywords: Pure Round Trip (D), Minimal
Genre: n#
FEN: 8/3p1Q2/3p4/8/3p4/1r6/k7/2K5
Input: Frank Müller, 2009-06-16
Last update: Frank Müller, 2009-06-16 more...
Genre: n#
FEN: 8/3p1Q2/3p4/8/3p4/1r6/k7/2K5
Input: Frank Müller, 2009-06-16
Last update: Frank Müller, 2009-06-16 more...
1. Tc5! b6 2. Dxg4+ Lf4 3. Dxe2+ Le3 4. Dxc4+ Ld4 5. De6+ Le5 6. Td5 g4 7. Tgd3 g3 8. Sf3 g2#
Cook: NL: 1. Td8! b6 2. Tgd3 cxd3 3. Txd3 g3 4. Sxg3+ Kf4 5. Sxe2+ Ke4 6. c4 g4 7. Txb3 g3 8. Sc2 g2#
2. ... g3 3. Sxg3+ Kf4 4. Sxe2+ Ke4 5. Tg3 g4 6. Sd3 cxd3 7. Tgxd3 g3 8. c4 g2#
1. Td7!, 1. Td6!, 1. Td2!
Cook: NL: 1. Td8! b6 2. Tgd3 cxd3 3. Txd3 g3 4. Sxg3+ Kf4 5. Sxe2+ Ke4 6. c4 g4 7. Txb3 g3 8. Sc2 g2#
2. ... g3 3. Sxg3+ Kf4 4. Sxe2+ Ke4 5. Tg3 g4 6. Sd3 cxd3 7. Tgxd3 g3 8. c4 g2#
1. Td7!, 1. Td6!, 1. Td2!
Marcin Banaszek: Eine Korrektur (+sBh6) rettet die Aufgabe, Gustav 4.1c C+ (2023-12-03)
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Keywords: Pure Round Trip (Dl)
Genre: s#
FEN: 8/1p5B/4Q1r1/1P1Rb1pN/2p1k1p1/1pP3R1/1P2p2p/4N2K
Reprints: 21 Szachy 04/1969
208 Polskie samomaty 1991
Input: Frank Müller, 2009-12-31
Last update: Marcin Banaszek, 2023-12-03 more...
Genre: s#
FEN: 8/1p5B/4Q1r1/1P1Rb1pN/2p1k1p1/1pP3R1/1P2p2p/4N2K
Reprints: 21 Szachy 04/1969
208 Polskie samomaty 1991
Input: Frank Müller, 2009-12-31
Last update: Marcin Banaszek, 2023-12-03 more...
82 - P1097486
Ivan D. Borisenko
Vitaly I. Shevchenko
2372 Shakhmatnaya Poeziya 05-08/2007
(8+5) C+
s#7
Ivan D. Borisenko
Vitaly I. Shevchenko
2372 Shakhmatnaya Poeziya 05-08/2007
(8+5) C+
s#7
1. Sh5+ Ke4 2. Dg2+ Df3 3. Dxc2+ Dd3 4. Dxc6+ Dd5 5. Dxg6+ Df5 6. Dc6+ Dd5 7. b8=L Dxc6#
Keywords: Pure Round Trip (D)
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K7/BP3NN1/2n2qn1/8/5kB1/7Q/2b5/3R4
Input: Frank Müller, 2010-01-01
Last update: James Malcom, 2020-09-30 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K7/BP3NN1/2n2qn1/8/5kB1/7Q/2b5/3R4
Input: Frank Müller, 2010-01-01
Last update: James Malcom, 2020-09-30 more...
a) 1. b4 Kd5? 2. g8=L+ Kd4 3. Dc8 Dxf6#
1. b4 Dxf6 2. Sc6+ Dxc6 3. c3+ Dxc3 4. Dxb6+ Dc5 5. Df6+ De5 6. g8=L Dxf6#
b) 1. Dc3+ Kd5 2. g8=D+ Kd6 3. Dd8+ Ke6 4. Dcc8+ Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
a) ist die Originalaufgabe von JH, b) wurde von FF gefunden und in der Lösungsbesprechung 03/1991, Seite 42, angefügt.
Cook: b) Dual 4. Dh3+ Lf5 5. Dd7+ Kxf6 6. Df7+ Kxf7#
4. ... Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
1. b4 Dxf6 2. Sc6+ Dxc6 3. c3+ Dxc3 4. Dxb6+ Dc5 5. Df6+ De5 6. g8=L Dxf6#
b) 1. Dc3+ Kd5 2. g8=D+ Kd6 3. Dd8+ Ke6 4. Dcc8+ Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
a) ist die Originalaufgabe von JH, b) wurde von FF gefunden und in der Lösungsbesprechung 03/1991, Seite 42, angefügt.
Cook: b) Dual 4. Dh3+ Lf5 5. Dd7+ Kxf6 6. Df7+ Kxf7#
4. ... Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
SCHRECKE: b) hat einen Dual:
4.Dh3+ Lf5 5.Dd7+ K:f6 6.Df7+ K:f7#
4. ... Kf7 5.Le8+ Kf8 6.Lg7+ L:g7# (2021-03-23)
comment
4.Dh3+ Lf5 5.Dd7+ K:f6 6.Df7+ K:f7#
4. ... Kf7 5.Le8+ Kf8 6.Lg7+ L:g7# (2021-03-23)
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Keywords: Forsberg Twins, Pure Round Trip (d)
Genre: s#
FEN: 1N5K/2Q3P1/1p3B2/1B2q2R/3kb2R/1P6/2PP4/8
Input: Frank Müller, 2010-04-29
Last update: Rainer Staudte, 2023-07-24 more...
Genre: s#
FEN: 1N5K/2Q3P1/1p3B2/1B2q2R/3kb2R/1P6/2PP4/8
Input: Frank Müller, 2010-04-29
Last update: Rainer Staudte, 2023-07-24 more...
1. Tf8+ Dxf8 2. Da3+ Dxa3+ 3. Lf3+ Dxf3#
Keywords: Pure Round Trip (d)
Genre: s#
FEN: k7/8/8/5R2/7P/5qQK/7P/1R1B2B1
Input: Frank Müller, 2010-05-02
Last update: Frank Müller, 2010-05-02 more...
Genre: s#
FEN: k7/8/8/5R2/7P/5qQK/7P/1R1B2B1
Input: Frank Müller, 2010-05-02
Last update: Frank Müller, 2010-05-02 more...
1. De8+ Kc7 2. Dc8+ Kb6 3. Db7+ Ka5 4. b4+ Kxb4 5. Dxb5+ Kc3 6. Db3+ Kd2 7. Dc2+ Kxe3 8. Lf2+ Kf4 9. De4+ Kg5 10. Dxg4+ Kf6 11. Dxg6+ Ke7 12. Dxf7+ Kd8,Kxd6 13. Lxa4 Th1#
Frank Richter: Korrekturfassung der P1104959 (2010-06-09)
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-12-05)
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SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-12-05)
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Keywords: Pure Round Trip (k)
Genre: s#
FEN: 3k4/5n2/2QN2pp/1p5P/n2P2r1/p3P1Bp/PP4pr/3B2K1
Input: Frank Müller, 2010-05-12
Last update: Marcin Banaszek, 2022-12-08 more...
Genre: s#
FEN: 3k4/5n2/2QN2pp/1p5P/n2P2r1/p3P1Bp/PP4pr/3B2K1
Input: Frank Müller, 2010-05-12
Last update: Marcin Banaszek, 2022-12-08 more...
86 - P1106668
Gianni Donati
Olli Heimo
Joose Norri
P0267 StrateGems 50 04-06/2010
3. Preis
(13+13) C+
BP in 23,0
Gianni Donati
Olli Heimo
Joose Norri
P0267 StrateGems 50 04-06/2010
3. Preis
(13+13) C+
BP in 23,0
1. a4 a5 2. Ta3 Ta6 3. Tf3 Tg6 4. Tf6 gxf6 5. b4 Lh6 6. b5 Le3 7. f4 La7 8. b6 Sa6 9. bxa7 b6 10. Kf2 Lb7 11. Ke3 Lf3 12. gxf3 Da8 13. Lh3 De4+ 14. fxe4 Sh6 15. Sf3 Tgg8 16. Dg1 Tf8 17. Dg4 Sg8 18. De6 fxe6 19. Tg1 Kf7 20. Tg5 Ta8 21. Td5 exd5 22. Le6+ Ke8 23. f5 Sb8
Henrik Juel: Natch 3.1 did not find the solution in half an hour
Stopped at pos. 12 (2018-12-29)
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Stopped at pos. 12 (2018-12-29)
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Keywords: Unique Proof Game, Pure Round Trip (t), Switchback (kss)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn2k1nr/P1ppp2p/1p2Bp2/p2p1P2/P3P3/4KN2/2PPP2P/1NB5
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2023-07-26 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn2k1nr/P1ppp2p/1p2Bp2/p2p1P2/P3P3/4KN2/2PPP2P/1NB5
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2023-07-26 more...
* 1. ... e5 2. d5,dxe5 axb2#
1. Lc1 e5 2. Lxe3 exd4 3. Lxd4+ e3 4. Lb2 axb2#
1. Lc1 e5 2. Lxe3 exd4 3. Lxd4+ e3 4. Lb2 axb2#
SCHRECKE: 2 Nebenlösungen: 1.T:h4, 1.Dc8
z.B.: 1.Dc8 Ka4 2.Da6+ Kb3 3.Dc6 e5 4.d5,d:e5 a:b2#
1. ... e5 2.d5,d:e5 Ka4 3.Da6+ Kb3 4.Dc6 a:b2# (2021-11-24)
comment
z.B.: 1.Dc8 Ka4 2.Da6+ Kb3 3.Dc6 e5 4.d5,d:e5 a:b2#
1. ... e5 2.d5,d:e5 Ka4 3.Da6+ Kb3 4.Dc6 a:b2# (2021-11-24)
comment
Keywords: Pure Round Trip (L)
Genre: s#
FEN: 8/8/2Q1p3/8/1p1Pp2p/pk2p2R/pB5P/K7
Input: Frank Müller, 2010-06-05
Last update: Marcin Banaszek, 2021-11-29 more...
Genre: s#
FEN: 8/8/2Q1p3/8/1p1Pp2p/pk2p2R/pB5P/K7
Input: Frank Müller, 2010-06-05
Last update: Marcin Banaszek, 2021-11-29 more...
a) 1. Sd2+ Kd4 2. Sb3+ Kc4 3. Sa5+ Kd4 4. Sxc6+ Kc4 5. Se5+ Kd4 6. Sf3+ Sxf3#
b) 1. Sd2+ Kd4 2. Sb3+ Kc4 3. Sa5+ Kd4 4. Sxc6+ Kc4 5. Sa5+ Kd4 6. Sb3#
b) 1. Sd2+ Kd4 2. Sb3+ Kc4 3. Sa5+ Kd4 4. Sxc6+ Kc4 5. Sa5+ Kd4 6. Sb3#
Keywords: Stipulation change, Pure Round Trip (S)
Genre: n#, s#
FEN: 1b6/2R4B/2p5/1R4r1/P1k5/5N2/1P3P1K/5bnN
Input: Frank Müller, 2010-07-14
Last update: Marcin Banaszek, 2020-12-09 more...
Genre: n#, s#
FEN: 1b6/2R4B/2p5/1R4r1/P1k5/5N2/1P3P1K/5bnN
Input: Frank Müller, 2010-07-14
Last update: Marcin Banaszek, 2020-12-09 more...
1. Tg5+ Kh2 2. Tg2+ Kh3 3. Th2+ Kg4 4. Th5 Te6+ 5. Kd5 Ta6+ 6. Ke4 Ta2 7. Le2+ Txe2#
Korrektur fs-99, 01-08/1991, S.49
Cook: NL,(G.Smits):
1. Lg2 Lf7 2. f4 Le8+ 3. Kd5 Txg2 4. Tg5 Kh2 5. Ke4 Te2+ 6. Kf3 Kh3 7. Th5+ Lxh5#
Korrektur fs-99, 01-08/1991, S.49
Cook: NL,(G.Smits):
1. Lg2 Lf7 2. f4 Le8+ 3. Kd5 Txg2 4. Tg5 Kh2 5. Ke4 Te2+ 6. Kf3 Kh3 7. Th5+ Lxh5#
paul: Cook (G. Smits): 1.Bg2 Bf7 2.f4 Le8+ 3.Kd5 Rxg2 4.Rg5 Kh2 5.Ke4 Re2+ 6.Kf3 Kh3 7.Rh5+ Bxh5# (2018-02-05)
Vaclav Kotesovec: FIDE Album version is also cooked, see P1393258. (2021-08-28)
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Vaclav Kotesovec: FIDE Album version is also cooked, see P1393258. (2021-08-28)
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Keywords: Pure Round Trip (Tt)
Genre: Fairies
FEN: 6b1/7p/2K2p2/2p2P1R/8/1P1P4/4rP2/5Bk1
Reprints: feenschach 99, p. 49, 01-08/1991
Input: HBae, 2010-08-09
Last update: Olaf Jenkner, 2019-06-09 more...
Genre: Fairies
FEN: 6b1/7p/2K2p2/2p2P1R/8/1P1P4/4rP2/5Bk1
Reprints: feenschach 99, p. 49, 01-08/1991
Input: HBae, 2010-08-09
Last update: Olaf Jenkner, 2019-06-09 more...
90 - P1114202
Zoltan Laborczi
György Bakcsi
2402 Best Problems 01/2010
Informalturnier 2010/11
2. ehrende Erwähnung
(5+7)
s#16
Ultraschachzwang
Zoltan Laborczi
György Bakcsi
2402 Best Problems 01/2010
Informalturnier 2010/11
2. ehrende Erwähnung
(5+7)
s#16
Ultraschachzwang
1. Kb2 d1=S+ 2. Ka2 Sc3+ 3. Kb3 a4+ 4. Kxc3 exd4+ 5. Kxd4 c5+ 6. Ke4 d5+ 7. Kd3 dxc4+ 8. Kxc4 b5 9. Kd3 c4+ 10. Kd2 c3+ 11. Kd1 c2+ 12. Ke2 c1=S+ 13. Kd2 Sb3+ 14. Kc3 b4+ 15. Kb2 a3+ 16. Ka2 Sc1#
Ultraschachzwang = Schachzwang (?)
Ultraschachzwang = Schachzwang (?)
SCHRECKE: C+, popeye 4.87 (2022-05-06)
Henrik Juel: The Märchenschachlexicon is not absolutely clear, but it seems that
Schachzwang: Black must check, if he can
Ultraschachzwang: Black must check
so these conditions are different (2022-05-06)
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Henrik Juel: The Märchenschachlexicon is not absolutely clear, but it seems that
Schachzwang: Black must check, if he can
Ultraschachzwang: Black must check
so these conditions are different (2022-05-06)
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Keywords: Pure Round Trip (K), Black check, Ultraschachzwang
Genre: Fairies
FEN: 4k3/1ppp4/8/p3p3/2PP4/8/K2p4/BN6
Input: Frank Müller, 2010-09-01
Last update: Frank Müller, 2012-06-27 more...
Genre: Fairies
FEN: 4k3/1ppp4/8/p3p3/2PP4/8/K2p4/BN6
Input: Frank Müller, 2010-09-01
Last update: Frank Müller, 2012-06-27 more...
1. Le7+ Kc7 2. Tb4 (droht 3. Tb7#) Tgb8! 3. Ld6+ Kd8 4. Te4 (droht 5. Te8#) Tb2+ 5. Kh3 Th2+ 6. Kg4 Th8 7. Le7+ Kc7 8. Tb4 Thb8 9. Ld6+ Kd8 10. Te4 nebst 11. Te8#
Die kritische Lenkung des sT kann durch eine vollständige antiperikritische Führung unter Schach wieder rückgängig gemacht werden. Danach ist diesselbe kritische Lenkung wegen Wegführung des wK erfolgreich.
Die kritische Lenkung des sT kann durch eine vollständige antiperikritische Führung unter Schach wieder rückgängig gemacht werden. Danach ist diesselbe kritische Lenkung wegen Wegführung des wK erfolgreich.
Pawel Stawarz: This problem has missing black pawn at g6. Correct problem has been already added by Felber Volker, please check P1269789. (2015-04-26)
Anton Baumann: mit sBg6: C+ Gustav 4.2a (2023-12-11)
more ...
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Anton Baumann: mit sBg6: C+ Gustav 4.2a (2023-12-11)
more ...
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Keywords: Pure Round Trip (t)
Genre: n#
FEN: r2k2r1/3B4/2PB4/2P5/4RP2/6P1/p5K1/6b1
Reprints: 96 mpk-Blätter 02/2005
C108 FIDE Album 2001-2003 2011
Input: Frank Müller, 2010-09-01
Last update: Frank Müller, 2011-12-04 more...
Genre: n#
FEN: r2k2r1/3B4/2PB4/2P5/4RP2/6P1/p5K1/6b1
Reprints: 96 mpk-Blätter 02/2005
C108 FIDE Album 2001-2003 2011
Input: Frank Müller, 2010-09-01
Last update: Frank Müller, 2011-12-04 more...
1. La6 Sc8 2. Lb7+ Ka7 3. Lc6+ Ka6 4. Lb5#
Keywords: Miniature Collection (0222229), Pure Round Trip (L)
Genre: n#
FEN: k7/n1RN4/8/1B6/K7/4n3/8/8
Input: Felber, Volker, 2010-09-11
Last update: Felber, Volker, 2013-02-25 more...
Genre: n#
FEN: k7/n1RN4/8/1B6/K7/4n3/8/8
Input: Felber, Volker, 2010-09-11
Last update: Felber, Volker, 2013-02-25 more...
1. Dh5 Ke1! 2. Df5 Kd1 3. Dg4 Kc1 4. Dg1+ e1=D+ 5. Dxe1#
1. .. Kc1? 2. Dh1+
1. .. Kc1? 2. Dh1+
F1DK
SBD: Satz 1. .. Kc1 (1. .. Ke1 2. Dg1#) 2. Dg1+ e1=D+ 3. Dxe1# (2013-02-23)
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-10-09)
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SBD: Satz 1. .. Kc1 (1. .. Ke1 2. Dg1#) 2. Dg1+ e1=D+ 3. Dxe1# (2013-02-23)
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-10-09)
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Keywords: Miniature Collection (0334789), Pure Round Trip
Genre: n#
FEN: 8/8/8/8/4p1Q1/2K1p3/2P1p3/3k4
Input: Zuncke/Bruder, 2010-09-11
Last update: SBD, 2013-02-24 more...
Genre: n#
FEN: 8/8/8/8/4p1Q1/2K1p3/2P1p3/3k4
Input: Zuncke/Bruder, 2010-09-11
Last update: SBD, 2013-02-24 more...
1. Tee1 a2 2. Dxa2+ Tb3 3. Da8+ Tb7 4. Dg8+ Tf7 5. Dg2+ f3 6. Te5+ fxe5#
Keywords: Pure Round Trip (D)
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 4R3/7p/5p1p/2Bk1K1p/3N1p1P/p4r2/6Q1/2R5
Input: Frank Müller, 2010-09-21
Last update: Marcin Banaszek, 2021-02-12 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 4R3/7p/5p1p/2Bk1K1p/3N1p1P/p4r2/6Q1/2R5
Input: Frank Müller, 2010-09-21
Last update: Marcin Banaszek, 2021-02-12 more...
1. De1 Kc2 2. Le6 Kxd3 3. Lxf5+ Kc4 4. De5 Kb3 5. Sb2 axb2#
Cook: 3. Lxa2 Kc2 4. Sb2 axb2# (Schrecke)
Cook: 3. Lxa2 Kc2 4. Sb2 axb2# (Schrecke)
Keywords: Pure Round Trip (k)
Genre: s#
FEN: 8/3B4/8/5p2/N2P1P2/pkPP4/p2P4/K1Q5
Input: Frank Müller, 2010-12-24
Last update: Arnold Beine, 2021-04-04 more...
Genre: s#
FEN: 8/3B4/8/5p2/N2P1P2/pkPP4/p2P4/K1Q5
Input: Frank Müller, 2010-12-24
Last update: Arnold Beine, 2021-04-04 more...
1. Kd2 fxe4 2. Kxc3 e3 3. Kb2 c3+ 4. Kc1 c4 5. Td2 exd2#
Keywords: Pure Round Trip (K)
Genre: s#
Computer test: SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-04-29) C+, Gustav 4.1d, Brute Force
FEN: 8/8/3R3Q/2p1kp2/2p1PR2/2n5/p1P1p3/B1K1N3
Input: Frank Müller, 2011-02-27
Last update: A.Buchanan, 2021-04-30 more...
Genre: s#
Computer test: SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-04-29) C+, Gustav 4.1d, Brute Force
FEN: 8/8/3R3Q/2p1kp2/2p1PR2/2n5/p1P1p3/B1K1N3
Input: Frank Müller, 2011-02-27
Last update: A.Buchanan, 2021-04-30 more...
1. Sc8! Ke8 2. Sd6+ Kd7 3. Sc4+ Kxe6 4. Kc5 Kf7 5. Kd5 e6#
Cook: Dual 2. Sb6+ Kf7 3. Sc4 Kxe6 4. Kc5 Kf7 5. Kd5 e6#
Cook: Dual 2. Sb6+ Kf7 3. Sc4 Kxe6 4. Kc5 Kf7 5. Kd5 e6#
SCHRECKE: Dual: 2.Sb6+ Kf7 3.Sc4 K:e6 4.Kc5 Kf7 5.Kd5 e6# (2021-09-14)
HBae: Korrekt mit wKb4 nach b6, sBa3 kann entfallen (11+5).
C+ Popeye v4.37 (2021-09-14)
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HBae: Korrekt mit wKb4 nach b6, sBa3 kann entfallen (11+5).
C+ Popeye v4.37 (2021-09-14)
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Keywords: Pure Round Trip (k)
Genre: s#
FEN: 1Q3b2/N3pkpP/2N1R1p1/4P1P1/1K1RP3/p7/B7/8
Input: Frank Müller, 2011-02-27
Last update: Marcin Banaszek, 2021-09-16 more...
Genre: s#
FEN: 1Q3b2/N3pkpP/2N1R1p1/4P1P1/1K1RP3/p7/B7/8
Input: Frank Müller, 2011-02-27
Last update: Marcin Banaszek, 2021-09-16 more...
1. Se5! Kb6 2. Sd7+ Ka6 3. Tc6+ Ka5 4. Dg5+ Lf5 5. Tc5+ Ka6 6. Df6+ Le6 7. Tc6+ Ka5 8. De5+ Ld5 9. Sb6 Ka6 10. Sc4+ Lxc6#
Keywords: Pure Round Trip (S), Systematic movement, Stalemate dissolution, Minimal (l)
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: KB6/8/k5bQ/2R5/P1N5/1PP5/8/8
Input: Frank Müller, 2011-07-02
Last update: Gunter Jordan, 2022-05-11 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: KB6/8/k5bQ/2R5/P1N5/1PP5/8/8
Input: Frank Müller, 2011-07-02
Last update: Gunter Jordan, 2022-05-11 more...
* 1. ... Ge7 2. Se4 Ge3 3. Sf2 Gg1 4. Sd1 Gc1#
1. Sd5! Gc5 2. Se7 Gf8 3. Sg8 Gh8+ 4. Sf6 Ge5#
Im Ndr. FIDE-Album 1962-64 wird als Quelle "Problem 1962" angegeben.
1. Sd5! Gc5 2. Se7 Gf8 3. Sg8 Gh8+ 4. Sf6 Ge5#
Im Ndr. FIDE-Album 1962-64 wird als Quelle "Problem 1962" angegeben.
Keywords: Pure Round Trip (S)
Pieces: = Grasshopper (G)
Genre: Fairies
Computer test: Popeye WINDOWS-32Bit V4.37 (436684 KB)
FEN: 8/8/5N2/6*2q1/1P6/kP6/1*2Q6/K*2Q6
Reprints: 596 FIDE Album 1959-1961 , p. 131, 1966
712 FIDE Album 1962-1964 , p. 152, 1968
Input: Frank Müller, 2011-08-20
Last update: Dieter Berlin, 2024-02-27 more...
Pieces: = Grasshopper (G)
Genre: Fairies
Computer test: Popeye WINDOWS-32Bit V4.37 (436684 KB)
FEN: 8/8/5N2/6*2q1/1P6/kP6/1*2Q6/K*2Q6
Reprints: 596 FIDE Album 1959-1961 , p. 131, 1966
712 FIDE Album 1962-1964 , p. 152, 1968
Input: Frank Müller, 2011-08-20
Last update: Dieter Berlin, 2024-02-27 more...
1. Dh8! h1=D! 2. Dxh1 b6 3. Da1 f5 4. Da8 fxg4 5. Dd5+ exd5#
Keywords: Alleinunterhalter, Pure Round Trip (D), Four corners
Genre: s#
FEN: Q7/1p2B3/4pp2/1Pp1k3/2K1pRP1/1PP1P1P1/3P3p/8
Input: Frank Müller, 2011-10-23
Last update: Marcin Banaszek, 2021-09-16 more...
Genre: s#
FEN: Q7/1p2B3/4pp2/1Pp1k3/2K1pRP1/1PP1P1P1/3P3p/8
Input: Frank Müller, 2011-10-23
Last update: Marcin Banaszek, 2021-09-16 more...
Show statistic for complete result. Show search result faster by using ids.
https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20200919+AND+NOT+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27+AND+NOT+S%3D%27Die+Schwalbe%27+AND+K%3D%27Reiner+Rundlauf%27
The problems of this query have been registered by the following contributors:
Gerd Wilts (32)hpr (12)
Hans-Jürgen Schäfer (13)
Markus Manhart (3)
Felber, Volker (2)
HBae (16)
Brian Stephenson (2)
Frank Müller (18)
Kevin Begley (1)
Zuncke/Bruder (1)
Henrik Juel: The task of changing who has the move can be accomplished in 15 black moves:
1.La7 Kb2 .. 6.Lb8 Kb7 7.La7 Kc7 8.Lb8+ Kc8 9.La7 Kb7 .. 15.La7 Ka1 16.Lb8,
or, if it is Black to move:
1... Kb2 2.La7 Ka3 .. 6.La7 Kb7 7.Lb8 Kc8 8.La7 Kc7 9.Lb8+ Kb7 .. 15.Lb8 Ka1 (2012-07-26)
Mario Richter: Since the wL can lose a tempo on b6-d8, the OR can be done even faster:
WTM: 1.La7 Sb7 2.Lb6 Kb2 3.Ld8 Ka1 4.Lc7 Sd8 5.Lb8
BTM: 1. ... Sb7 2.La7 Sd8 3.Lb6 Sb7 4.Ld8 Kb2 5.Lc7 Sd8 6.Lb8 Ka1
My guess: diagram error. (2012-07-26)
TBr: Indeed, Mario, a diagram error just in "32 personaggi e 1 autore" (p.533), where the diagram is given as here -- but with piece count 10+11!
Correction in "La genesi delle posizioni" (p.217): Add white Pawn b7. (2012-07-26)
Henrik Juel: With a white pawn added on b7, the play by black king is a1-b2-a3-a4-b5 followed by a round trip, the orientation of which depends on who has the move, like in P0005205 (2012-07-26)
A.Buchanan: For an article I am writing, does anyone have any pithy quotes by Ceriani about ortho-reconstruction, preferably in Italian, please? (2023-08-10)
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