143 problem(s) found in 3492 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='Reiner Rundlauf' AND NOT COOKED ] [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. ... 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. 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. 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...
16 - 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...
17 - 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. 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. Kf3 Td4 2. Kxe3 Txd3+ 3. Kxf4 Te3 4. Kg4 Te4#
Yuri Bilokin: Areal cycle (bK, with captures, 4)
Areal cycle (wR, with captures, 4) (2023-05-08)
comment
Areal cycle (wR, with captures, 4) (2023-05-08)
comment
Keywords: Pure Round Trip
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/7p/1p3n1p/bp2RPkP/pR1pP3/q2p4/rrnK4
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: 8/8/7p/1p3n1p/bp2RPkP/pR1pP3/q2p4/rrnK4
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 1999-06-20 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...
25 - 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...
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. 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...
32 - P1000177
Gianni Donati
9989 Die Schwalbe 170 04/1998
Für den Geburtstag meiner Frau Dana
1. Lob
(14+15) C+
BP in 12,0
Gianni Donati
9989 Die Schwalbe 170 04/1998
Für den Geburtstag meiner Frau Dana
1. Lob
(14+15) C+
BP in 12,0
1. Sc3 b5 2. Sd5 La6 3. Sxe7 Sxe7 4. e4 Sg6 5. e5 Ld6 6. e6 Kf8 7. e7 Kg8 8. e8=S Lg3 9. Sd6 Dh4 10. Sf5 Da4 11. Sd4 b4 12. Se2 Lxe2
Keywords: Unique Proof Game, Promotion (S), Pure Round Trip (B9), Homebase (w), Phoenix (S), Ceriani-Frolkin Theme (S), Prentos Theme (S), Tempo Loss
Genre: Retro
Computer test: (Natch 1.3 Copyright (C) 1997-1999 Pascal Wassong)
FEN: rn4kr/p1pp1ppp/6n1/8/qp6/6b1/PPPPbPPP/R1BQKBNR
Reprints: www.mathpuzzle.com
YouTube 17/02/2022
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2022-02-18 more...
Genre: Retro
Computer test: (Natch 1.3 Copyright (C) 1997-1999 Pascal Wassong)
FEN: rn4kr/p1pp1ppp/6n1/8/qp6/6b1/PPPPbPPP/R1BQKBNR
Reprints: www.mathpuzzle.com
YouTube 17/02/2022
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2022-02-18 more...
33 - P1000219
Mark Kirtley
10414v Die Schwalbe 177 06/1999
Michel Caillaud gewidmet
(16+10)
BP in 21,0
Mark Kirtley
10414v Die Schwalbe 177 06/1999
Michel Caillaud gewidmet
(16+10)
BP in 21,0
1. e4 a5 2. Dh5 Ta6 3. Dxa5 Th6 4. Da8 Sa6 5. Dxc8 Th5 6. Da8 h6 7. Dxa6 Da8 8. Dg6 Kd8 9. Dh7 Kc8 10. Dxg8 Kb8 11. Dxf8+ Ka7 12. Dxa8+ Kb6 13. Da5+ Kc6 14. La6 Kd6 15. d3 Ke6 16. Ld2 Kf6 17. Lb4 Kg6 18. Kd2 Kh7 19. Kc3 Kg8 20. Sd2 Kf8 21. Te1 Ke8
14zügiger Rundlauf des sK
14zügiger Rundlauf des sK
Korrektur in "Die Schwalbe" 181, 02/2000, S.377
Henrik Juel: Natch 3.1 did nothing in more than 3 hours (2018-12-13)
Vladimir Rey: I guess, FEN-misprint. Correct e3 = e4, probably. If p. e3: dual 8. Da6-d3 (2022-11-06)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.5 wenn Bauer auf e3 steht.
Lösezeit: 70:23:07 Stunden. (hh:mm:ss) Keine Lösung: BP 20.5 ca. 22 Std.
Herr Vladimir Rey hat dies schon festgestellt.
8.Da6-d3 Ke8-d8 9.Dd3-h7 Kd8-c8
8.Da6-g6 Ke8-d8 9.Dg6-h7 Kd8-c8
Computerprüfung: C+ Stelvio 1.5 wenn Bauer auf e4 steht.
Lösezeit: 87:04:40 Stunden. Keine Lösung: BP 20.5 ca. 31Std.
Notation ist bereits für Bauer auf e4 richtig.
Richtige FEN: 4k2r/1pppppp1/B6p/Q6r/1B2P3/2KP4/PPPN1PPP/4R1NR
Die Strategien für e3 2944615/ e4 3379466 gerechnet mit 20/21 Playern. (2023-08-28)
comment
Henrik Juel: Natch 3.1 did nothing in more than 3 hours (2018-12-13)
Vladimir Rey: I guess, FEN-misprint. Correct e3 = e4, probably. If p. e3: dual 8. Da6-d3 (2022-11-06)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.5 wenn Bauer auf e3 steht.
Lösezeit: 70:23:07 Stunden. (hh:mm:ss) Keine Lösung: BP 20.5 ca. 22 Std.
Herr Vladimir Rey hat dies schon festgestellt.
8.Da6-d3 Ke8-d8 9.Dd3-h7 Kd8-c8
8.Da6-g6 Ke8-d8 9.Dg6-h7 Kd8-c8
Computerprüfung: C+ Stelvio 1.5 wenn Bauer auf e4 steht.
Lösezeit: 87:04:40 Stunden. Keine Lösung: BP 20.5 ca. 31Std.
Notation ist bereits für Bauer auf e4 richtig.
Richtige FEN: 4k2r/1pppppp1/B6p/Q6r/1B2P3/2KP4/PPPN1PPP/4R1NR
Die Strategien für e3 2944615/ e4 3379466 gerechnet mit 20/21 Playern. (2023-08-28)
comment
Keywords: Unique Proof Game, Pure Round Trip (k)
Genre: Retro
FEN: 4k2r/1pppppp1/B6p/Q6r/1B6/2KPP3/PPPN1PPP/4R1NR
Reprints: 10414 Die Schwalbe 181 02/2000
Input: Gerd Wilts, 2000-08-01
Last update: Alfred Pfeiffer, 2018-12-14 more...
Genre: Retro
FEN: 4k2r/1pppppp1/B6p/Q6r/1B6/2KPP3/PPPN1PPP/4R1NR
Reprints: 10414 Die Schwalbe 181 02/2000
Input: Gerd Wilts, 2000-08-01
Last update: Alfred Pfeiffer, 2018-12-14 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...
41 - 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...
(J.-M. Loustau, Heft 151, 2/1995). Gleich dreifaches Pech hatte der Autor mit diesem Stück. Zunächst kocht der SB das Stück als em s#9 / und muß durch den Autor darauf hingewiesen werden, daß es sich um ein em Patt / handelt. Beginnend mit Heft 151 wurden die Forderungen durch Abkürzungen ersetzt; und unser SL hat aus dem em Selbstpatt / ein em s#9 gemacht - ja Längstzüger wird halt fast automatisch mit s# verbunden! Und dann verschläft der SB auch noch die Lösungsbesprechung - nur gut, daß PvdH, unser 95er Preisrichter, aufgepaßt hat... Lösung: Sofort 1.Sf6? T:f6 scheitert an 2.g:f6! Deshalb muß zuvor der wBg5 abgeräumt werden: 1.Sc5 EQa3 2.Sd3 EQg3 3.Se5 EQc7 4.Sc4 EQc1 5.Se3 EQ:g5 (weg ist er!) 6.Sd5 EQa5 7.Sc3 EQe1 8.Se4 EQe7 und nun 9.Sf6 T:f6=. 8zügiger S-Rundlauf im 3$ times$3-Quadrat und großer Stern der sEQ.
Jean-Marc Loustau: To be mentionned also the set play:
1... EQe1 2.Sc3 EQa5 3.Sd5 EQ:g5 4.Se3 EQc1 5.Sf5 Ra3 6.Sg3 R:g3=
Jean-Marc Loustau: To be mentionned also the set play:
1... EQe1 2.Sc3 EQa5 3.Sd5 EQ:g5 4.Se3 EQc1 5.Sf5 Ra3 6.Sg3 R:g3=
Anton Baumann: unlösbar! Gemäss Definition im Märchenschachlexikon kann der Equihopper nicht über 2 Steine hüpfen.
Der Zug 2. ... EQa3-g3 ist wegen sTf3 illegal. (2023-01-05)
more ...
comment
Der Zug 2. ... EQa3-g3 ist wegen sTf3 illegal. (2023-01-05)
more ...
comment
Keywords: Maximummer, Pure Round Trip (S)
Pieces: = Equihopper (E)
Genre: Fairies
FEN: 6k1/4*3n3/6pK/6P1/4N3/5r2/8/8
Input: Gerd Wilts, 2003-06-29
Last update: HBae, 2010-07-30 more...
Pieces: = Equihopper (E)
Genre: Fairies
FEN: 6k1/4*3n3/6pK/6P1/4N3/5r2/8/8
Input: Gerd Wilts, 2003-06-29
Last update: HBae, 2010-07-30 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...
46 - 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. 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...
50 - P1051943
Manfred Zucker
1397 Die Schwalbe 30 12/1974
Der "Schwalbe" zum 50-jährigen Jubiläum gewidmet
5. ehrende Erwähnung
(4+6)
#4
Manfred Zucker
1397 Die Schwalbe 30 12/1974
Der "Schwalbe" zum 50-jährigen Jubiläum gewidmet
5. ehrende Erwähnung
(4+6)
#4
1. Lc1 Sxc2 2. Lb2+ Kb1 3. Lc3+ Kc1 4. Ld2#
(MZ357)
Sally: Schwalbe, Dez. 1974: Der Schwalbe zum 50- jährigen
Jubiläum gew, .5. ehr Erw.
Läuferrundlauf auf engstem Raum mit Matt auf dem Ausgangs-
feld: 1. Lc1! -Sxc2, 2.Lb2+ - Kb1, 3. Lc3+ - Kc1, 4.Ld2#.
Umgekehrt gehts nicht: !. Dd1? -Sb5, 2. Df1 -Bh5, 3. Sg5+ -Kd4! (2010-08-26)
Henrik Juel: C+ Popeye 4.61 (2021-03-09)
comment
Sally: Schwalbe, Dez. 1974: Der Schwalbe zum 50- jährigen
Jubiläum gew, .5. ehr Erw.
Läuferrundlauf auf engstem Raum mit Matt auf dem Ausgangs-
feld: 1. Lc1! -Sxc2, 2.Lb2+ - Kb1, 3. Lc3+ - Kc1, 4.Ld2#.
Umgekehrt gehts nicht: !. Dd1? -Sb5, 2. Df1 -Bh5, 3. Sg5+ -Kd4! (2010-08-26)
Henrik Juel: C+ Popeye 4.61 (2021-03-09)
comment
Keywords: Brian Stephenson Collection (36983), Pure Round Trip (L), Model mate
Genre: n#
FEN: 8/1r2p3/8/8/1p6/1R6/p1BBK3/k3n3
Reprints: 97 Schachexpress (DBSB) 12/2013
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-09 more...
Genre: n#
FEN: 8/1r2p3/8/8/1p6/1R6/p1BBK3/k3n3
Reprints: 97 Schachexpress (DBSB) 12/2013
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-09 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...
52 - 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...
58 - 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. ... 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)
comment
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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comment
.
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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comment
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)
comment
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...
73 - 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...
75 - 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...
76 - 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...
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)
more ...
comment
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-12-05)
more ...
comment
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...
79 - 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)
more ...
comment
Stopped at pos. 12 (2018-12-29)
more ...
comment
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...
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...
81 - 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)
comment
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)
comment
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 ...
comment
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)
comment
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)
comment
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. e4 h5 2. Dg4 hxg4 3. a4 g3 4. Ta3 gxh2 5. Tb3 hxg1=L 6. Th6 a5 7. Ta6 Sc6 8. Tbb6 Tb8 9. Lb5 Lxf2+ 10. Kf1 Ld4 11. Ta8 Lc3 12. Tba6 b6 13. dxc3 Tb7 14. Sd2 Ta7 15. Sb3 Lb7 16. Tc8 Ta8 17. Sc5 Tb8 18. Ta8 La6 19. b3 Tb7 20. Tab8 Ta7 21. Sb7 Ta8
Henrik Juel: The keyword Pure Round Trip (tt) suggests roundtrips by two black rooks; in fact Ta8 does a double roundtrip (2018-12-29)
Henrik Juel: Natch 3.1 did not find the solution in an hour
Stopped at pos. 75
The puzzle in the NW corner is almost impossible for a solver like Natch, whereas a human solver would find it simple, if he got that far is the solving process
The double roundtrip is automatic (2018-12-29)
ras@bsiag.com: Actually, this problem is solvable by computer, tested by Stelvio 0.92 and found to be correct (just one of many PDB problems that will be either C+ or C- in the near future). It took a bit more than 1h. (2022-12-08)
comment
Henrik Juel: Natch 3.1 did not find the solution in an hour
Stopped at pos. 75
The puzzle in the NW corner is almost impossible for a solver like Natch, whereas a human solver would find it simple, if he got that far is the solving process
The double roundtrip is automatic (2018-12-29)
ras@bsiag.com: Actually, this problem is solvable by computer, tested by Stelvio 0.92 and found to be correct (just one of many PDB problems that will be either C+ or C- in the near future). It took a bit more than 1h. (2022-12-08)
comment
Keywords: Unique Proof Game, Pure Round Trip (tt), Ceriani-Frolkin Theme (l)
Genre: Retro
Computer test: Stelvio 1.0
FEN: rRRqkbnr/1Nppppp1/bpn5/pB6/P3P3/1PP5/2P3P1/2B2K2
Input: Gerd Wilts, 2010-10-07
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: rRRqkbnr/1Nppppp1/bpn5/pB6/P3P3/1PP5/2P3P1/2B2K2
Input: Gerd Wilts, 2010-10-07
Last update: Silvio Baier, 2023-03-02 more...
1. Sg3+? hxg3+ 2. Sh4??
1. Tc4+! Ke3 2. Txe6+ Kd3 3. Tc3+ Kd4 4. Td6+ Ke4 5. Tc4+ Ke3 6. e8=D+ (T) Lxe8 7. Te6+ Kd3 8. Tc3+ Kd4 9. Td6+ Ke4 10. Sg3+ hxg3#
1. Tc4+! Ke3 2. Txe6+ Kd3 3. Tc3+ Kd4 4. Td6+ Ke4 5. Tc4+ Ke3 6. e8=D+ (T) Lxe8 7. Te6+ Kd3 8. Tc3+ Kd4 9. Td6+ Ke4 10. Sg3+ hxg3#
Anton Baumann: mit akzeptiertem Umwandlungsdual C+; Gustav 4.1d (2021-01-13)
A.Buchanan: I think the automatic pardon for a promotion dual only supplies if it's on the final move. I don't know how much latitude there is for very minor duals in selfmates. If it's not acceptable, then maybe there has to be e.g. bSd8 & wDe8, so can have discovered check dxe8=S+. Would need some way to prevent dxe8=L though, so pull apart the constellation around wK. I have some ideas, but no engine to validate and not clever enough to analyze it myself :D (2021-01-13)
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A.Buchanan: I think the automatic pardon for a promotion dual only supplies if it's on the final move. I don't know how much latitude there is for very minor duals in selfmates. If it's not acceptable, then maybe there has to be e.g. bSd8 & wDe8, so can have discovered check dxe8=S+. Would need some way to prevent dxe8=L though, so pull apart the constellation around wK. I have some ideas, but no engine to validate and not clever enough to analyze it myself :D (2021-01-13)
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Keywords: Pure Round Trip (k 2x)
Genre: s#
Computer test: Gustav 4.1d
FEN: 8/4P2n/3Rp1NB/5pbK/b3k2p/2R2p2/1P1p3r/7N
Input: Frank Müller, 2010-12-12
Last update: Marcin Banaszek, 2021-01-13 more...
Genre: s#
Computer test: Gustav 4.1d
FEN: 8/4P2n/3Rp1NB/5pbK/b3k2p/2R2p2/1P1p3r/7N
Input: Frank Müller, 2010-12-12
Last update: Marcin Banaszek, 2021-01-13 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. 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. Tf3+! Ke5 2. Txf5+ Kd4 3. Td5+ Ke3 4. Td3+ Kf4 5. Tf3+ Dxf3#
VG Hagemann 399 Feenschach
VG Hagemann 399 Feenschach
Keywords: Pure Round Trip (T)
Genre: s#
FEN: 8/8/3p1b1r/2N2p1Q/1B3k2/1P1R3K/3p1p1P/3q4
Input: Frank Müller, 2011-07-24
Last update: Marcin Banaszek, 2021-09-13 more...
Genre: s#
FEN: 8/8/3p1b1r/2N2p1Q/1B3k2/1P1R3K/3p1p1P/3q4
Input: Frank Müller, 2011-07-24
Last update: Marcin Banaszek, 2021-09-13 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...
1. Se8! Ke4 2. Sf6+ Kf5 3. Sh5 Ke4 4. Sg3+ Kd5 5. Sxe2 Ke4 6. Sc3+ Kf5 7. Sb5 Ke4 8. Sd6+ Kd5 9. Sd3 Kc6 10. d5+ Kc7 11. Sb4 h1=D 12. Sa6#
Duplicate Diagram: P1226302
Keywords: Pure Round Trip (S)
Genre: n#
FEN: n7/4K3/3N4/3kN3/3P4/4B3/4pP1p/8
Input: Felber, Volker, 2011-12-03
Last update: Olaf Jenkner, 2011-12-03 more...
Genre: n#
FEN: n7/4K3/3N4/3kN3/3P4/4B3/4pP1p/8
Input: Felber, Volker, 2011-12-03
Last update: Olaf Jenkner, 2011-12-03 more...
1. Da1 Kb5! 2. Df1+ Kc6 3. Dc4+ Kxb7 4. Da6+ Kxa6#
Keywords: Pure Round Trip (k)
Genre: s#
FEN: b6Q/1NPp4/k2P4/8/pP6/P7/7P/6BK
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2022-01-27 more...
Genre: s#
FEN: b6Q/1NPp4/k2P4/8/pP6/P7/7P/6BK
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2022-01-27 more...
1. e5! Ka4 2. Dd1+ Kb5 3. Dd5+ Ka4 4. Dd7+ Kb3 5. Dc6 a2#
1. ... Kc4 2. De4+ Kb5 3. Dd5+ Ka4 4. Dd7+ Kb3 5. Dc6 a2#
1. ... Kc4 2. De4+ Kb5 3. Dd5+ Ka4 4. Dd7+ Kb3 5. Dc6 a2#
Keywords: Round Trip (k), Pure Round Trip (k)
Genre: s#
FEN: 8/5p2/p4P2/B7/1P2P3/pk6/1p6/1K2Q3
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2021-04-28 more...
Genre: s#
FEN: 8/5p2/p4P2/B7/1P2P3/pk6/1p6/1K2Q3
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2021-04-28 more...
1. Se2! Lc3,Lc5 2. Sb4+ Lxb4 3. Dc3+ Lxc3+ 4. Sd4+ Lxd4#
1. ... La1,Lb2? 2. Dc3+ Lxc3+ 3. Sd4+ Lxd4#
1. ... La1,Lb2? 2. Dc3+ Lxc3+ 3. Sd4+ Lxd4#
Keywords: Cross check, Pure Round Trip (l), Minimal
Genre: s#
FEN: 6BK/7P/8/4Q3/3b1N2/1P1P4/N1k5/1R1R4
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2022-04-03 more...
Genre: s#
FEN: 6BK/7P/8/4Q3/3b1N2/1P1P4/N1k5/1R1R4
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2022-04-03 more...
1. Da1 d5 2. Da7 d4 3. Da1 d3 4. Db1 d2#
Keywords: Alleinunterhalter, Pure Round Trip
Genre: s#
FEN: 8/8/3p4/4p3/4P3/1p2kP1N/1B2p3/1QK1N3
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2021-12-14 more...
Genre: s#
FEN: 8/8/3p4/4p3/4P3/1p2kP1N/1B2p3/1QK1N3
Input: Frank Müller, 2012-01-02
Last update: Marcin Banaszek, 2021-12-14 more...
98 - P1232272
Mark Kirtley
Retros mailing list 31/12/2003
4. Preis (version)
Gianni Donati 50th Jubilee Tourney
(14+12) C+
BP in 23,5
Mark Kirtley
Retros mailing list 31/12/2003
4. Preis (version)
Gianni Donati 50th Jubilee Tourney
(14+12) C+
BP in 23,5
1. a4 h5 2. a5 Th6 3. a6 Tc6 4. axb7 a5 5. bxc8=L a4 6. La6 Dc8 7. Lc4 Da6 8. Le6 Dd3 9. exd3 a3 10. Df3 a2 11. Df6 exf6 12. f4 Ld6 13. f5 Lxh2 14. Kd1 Le5 15. Th4 d6 16. Tb4 h4 17. Lc8 h3 18. Txb8 h2 19. Tb5 h1=T 20. Le6 Th2 21. Lc4 0-0-0 22. Td5 Kb7 23. La6+ Kb6 24. Lc8
Cook: 1. a2-a4 a7-a5 2. f2-f4 b7-b5 3. Ke1-f2 h7-h5 4. Kf2-e3 Th8-h6 5. Dd1-e1 Th6-c6 6. a4xb5 a5-a4 7. De1-h4 a4-a3 8. Dh4-f6 e7xf6 9. Ke3-f2 Lf8-d6 10. b5-b6 Ld6-e5 11. b6-b7 d7-d6 12. b7xc8=L Dd8-d7 13. h2-h3 Dd7xh3 14. f4-f5 Dh3-d3 15. Th1-h4 a3-a2 16. Th4-b4 h5-h4 17. Tb4xb8 h4-h3 18. Tb8-b5 h3-h2 19. Tb5-d5 h2-h1=T 20. Lc8-a6 Th1-h2 21. La6-b5 0-0-0 22. e2xd3 Kc8-b7 23. Lb5-a6+ Kb7-b6 24. La6-c8 (Stelvio v0.93, RA)
Cook: 1. a2-a4 a7-a5 2. f2-f4 b7-b5 3. Ke1-f2 h7-h5 4. Kf2-e3 Th8-h6 5. Dd1-e1 Th6-c6 6. a4xb5 a5-a4 7. De1-h4 a4-a3 8. Dh4-f6 e7xf6 9. Ke3-f2 Lf8-d6 10. b5-b6 Ld6-e5 11. b6-b7 d7-d6 12. b7xc8=L Dd8-d7 13. h2-h3 Dd7xh3 14. f4-f5 Dh3-d3 15. Th1-h4 a3-a2 16. Th4-b4 h5-h4 17. Tb4xb8 h4-h3 18. Tb8-b5 h3-h2 19. Tb5-d5 h2-h1=T 20. Lc8-a6 Th1-h2 21. La6-b5 0-0-0 22. e2xd3 Kc8-b7 23. Lb5-a6+ Kb7-b6 24. La6-c8 (Stelvio v0.93, RA)
The promoted white Bishop leaves its promotion square by a counterclockwise route. No sooner has it returned than it leaves again and retraces its steps, clockwise now! (PR Gianni Donati)
Correction of P1011887
Michel Caillaud: The correction found in the Winchloé database is with 14.Kd1 instead of 14.Kf2 and is C+ (Natch, Stelvio...) (2022-12-18)
comment
Correction of P1011887
Michel Caillaud: The correction found in the Winchloé database is with 14.Kd1 instead of 14.Kf2 and is C+ (Natch, Stelvio...) (2022-12-18)
comment
Keywords: Unique Proof Game, Round Trip, Pure Round Trip (L)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 2Br2n1/2p2pp1/1krp1p2/3RbP2/8/3P4/pPPP2Pr/RNBK1BN1
Input: Dan Meinking, 2012-02-15
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 2Br2n1/2p2pp1/1krp1p2/3RbP2/8/3P4/pPPP2Pr/RNBK1BN1
Input: Dan Meinking, 2012-02-15
Last update: Silvio Baier, 2023-03-02 more...
1. Tdc2+ Kd1 2. Tc5 f3 3. Td5+ Kc1 4. Tdd2 Td1 5. Tdc2#
1. Tdc2+ Kd1 2. Tc5 fxe3 3. Tb4 Tf4 4. Txf4 Kd2 5. Td4#
1. Tdc2+ Kd1 2. Tc5 fxe3 3. Tb4 Tf4 4. Txf4 Kd2 5. Td4#
Keywords: Pure Round Trip (T)
Genre: n#
Computer test: SCHRECKE: Gustav 4.2a
FEN: 8/2p5/2P5/8/5p2/4P3/1R1Rprp1/2k1rbK1
Input: Ralf Kr?tschmer, 2012-04-04
Last update: Dieter Berlin, 2023-10-08 more...
Genre: n#
Computer test: SCHRECKE: Gustav 4.2a
FEN: 8/2p5/2P5/8/5p2/4P3/1R1Rprp1/2k1rbK1
Input: Ralf Kr?tschmer, 2012-04-04
Last update: Dieter Berlin, 2023-10-08 more...
1. Lg5 Db2 2. c1=T+ Db1 3. Tc6 Dxb3 4. Tg6 Dxg8 5. Dh8+ Dxh8#
Dan Meinking: Compare P1006951 (2012-05-08)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-12)
comment
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-12)
comment
Keywords: Minimal (D), under-promotion (t), Pure Round Trip (D-5), Model mate
Genre: h#
FEN: 6bQ/7q/1p5k/5p2/8/pp6/p1p5/K1b5
Input: Felber, Volker, 2012-05-08
Last update: Gunter Jordan, 2020-10-12 more...
Genre: h#
FEN: 6bQ/7q/1p5k/5p2/8/pp6/p1p5/K1b5
Input: Felber, Volker, 2012-05-08
Last update: Gunter Jordan, 2020-10-12 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+K%3D%27Reiner+Rundlauf%27+AND+NOT+COOKED+
The problems of this query have been registered by the following contributors:
Gerd Wilts (34)hpr (9)
Hans-Jürgen Schäfer (11)
Markus Manhart (2)
Felber, Volker (4)
HBae (15)
Brian Stephenson (3)
Frank Müller (19)
Zuncke/Bruder (1)
Dan Meinking (1)
Ralf Kr?tschmer (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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