Chess Problem Database Server

67 problem(s) found in 2525 milliseconds (displaying 67 problem(s)). [COMMENTDATE>=20220810 AND NOT K='Allumwandlung' AND K='Platzwechsel'] [download as LaTeX]

1 - P0001572
Andrey Frolkin
442 Europe Echecs 313 01/1985

(15+13) C+
BP in 16,5

1. Sc3 Sf6 2. Sd5 Se4 3. Sxe7 Sg5 4. Sg6 Lb4 5. e3 d6 6. Se2 Kd7 7. Sc3 Kc6 8. Sb1 Sd7 9. Lb5+ Kxb5 10. Sxh8 c6 11. Sxf7 Da5 12. Se5 Sb6 13. Sf3 Ld7 14. Sg1 Te8 15. f3 Te4 16. Kf2 Le8 17. Kg3
play all

more ...
comment

Keywords: Unique Proof Game, Interchange (SS)
Genre: Retro
Computer test: Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong Ergänzung: Stelvio 1.2. Keine Lösung BP 15.5, BP 16.0.
FEN: 4b3/pp4pp/1npp4/qk4n1/1b2r3/4PPK1/PPPP2PP/RNBQ2NR
Reprints: 67 Shortest Proof Games 11/1991
(2) Quartz 21 07-09/2002
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...

2 - P0001640
A. d'Ales
509 Europe Echecs 367/368 07/1989

(15+16) cooked
KBP in 25,0

NL: 1. b4 a5 2. h4 d6 3. Th3 g6 4. Te3 Lg7 5. g3 Lc3 6. Lh3 Ta6 7. Kf1 Tc6 8. Kg2 b6 9. Kf3 Dd7 10. Ke4 Tc4+ 11. Kd5 Dxh3 12. Sf3 Lg4 13. Sd4 Sd7 14. Sb3 Td4+ 15. Kc6 Se5+ 16. Kb7 Kd7 17. Dh1 Ke6 18. Kc8 Lh5 19. Da8 Kf5 20. g4+ Kf4 21. f3 Kg3 22. Kd8 Kf2 23. Ke8 Ke1
AL wurde nie veröffentlicht.
play all

Moldenhauer: Computerprüfung: Cooked Stelvio 1.6 01:00:21 Stunde. (hh:mm:ss)
1.Sf3 a5 2.b4 g6 3.h4 Lg7 4.Th3 Lc3 5.Sd4 Ta6 6.Te3 Tc6 7.g3 Tc4 8.Lh3 d6 9.Kf1 Dd7
10.Kg2 Dxh3+ 11.Kf3 Lg4+ 12.Ke4 Sd7 13.Kd5 b6 14.Sb3 Td4+ 15.Kc6 Se5+ 16.Kb7 Kd7
17.Dh1 Ke6 18.Kc8 Kf5 19.Da8 Lh5 20.g4+ Kf4 21.f3 Kg3 22.Kd8 Kf2 23.Ke8 Ke1
Keine Lösung: BP 22.5.
Wenn die Forderung KBP 25.0 richtig ist dann Cooked. (2023-09-28)
comment

Keywords: Interchange, Non-Unique Proof Game, Non-Unique Proof Game
Genre: Retro
FEN: Q3K1nr/2p1pp1p/1p1p2p1/p3n2b/1P1r2PP/1Nb1RP1q/P1PPP3/RNB1k3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2014-05-21 more...

3 - P0006492
Thierry Le Gleuher
601v Europe Echecs 438 10/1995

(16+13) C+
BP in 21,0

1. h4 a5 2. h5 Ta6 3. h6 Tb6 4. hxg7 Tb3 5. Th6 b5 6. Ta6 h5 7. axb3 h4 8. Ta4 h3 9. Th4 h2 10. c4 h1=T 11. Dc2 Th3 12. Dg6 Tc3 13. Th1 Thh3 14. Db6 Thf3 15. exf3 a4 16. Ld3 a3 17. Le4 a2 18. d3 a1=T 19. Le3 Ta4 20. Ld4 Tb4 21. Ta1 Ta4
play all

White Rooks are permuted. Black Rooks are promotees. A very nice maneuver.

Moldenhauer: Computerprüfung: C+ Stevio 1.11 00:49:45 Minuten.(hh:mm:ss)
Keine Lösung: BP20.0, BP 20.5. (2023-03-16)
Henrik Juel: Hello Moldenhauer
Your tests with Stelvio are much appreciated
Did you notice any improvement by version 1.11 over version 1.0? (2023-03-16)
Moldenhauer: Hallo Henrik Juel
Danke! Seit der neuen Version Stelvio 1.11 hat sich die Anzahl der Strategien reduziert.
Beispiel: P1000406 von 6775 auf 4994, was natürlich das Tempo erhöht. Habe ich zufällig bemerkt.
Dieses Beispiel habe ich auch gespeichert. Herr Reto Aschwanden schrieb glaube ich auch darüber.
Bei mir laufen immer mehrere Stelvios gleichzeitig. Vielleicht ist mein Rechner deshalb
gegenüber anderen langsamer. AMD Ryzen 3950X 16 Kerne 3 Jahre alt. (2023-03-16)
Henrik Juel: Thanks, Moldenhauer (2023-03-20)
comment

Keywords: Unique Proof Game, Interchange (TT), Promotion
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1nbqkbn1/2ppppP1/1Q6/1p6/r1PBB3/1PrP1P2/1P3PP1/RN2K1NR
Input: Gerd Wilts, 1996-06-16
Last update: Silvio Baier, 2023-03-20 more...

4 - P0008568
Unto Heinonen
Springaren 1996
2. Preis

(13+12) C+
BP in 19,0

1. b4 c5 2. b5 Dc7 3. b6 Dg3 4. hxg3 h6 5. Txh6 axb6 6. Tc6 Txa2 7. Sa3 Txc2 8. Lb2 Tc4 9. Sc2 Tch4 10. e4 g6 11. Lc4 Lh6 12. Se2 Le3 13. dxe3 e6 14. Dd3 Se7 15. 0-0-0 0-0 16. Txc8 Sc6 17. Ta8 Th8 18. Ta1 Ta8 19. Th1 Sb8
play all

more ...
comment

Keywords: Unique Proof Game, Interchange (TTtt), Castling, Switchback (s)
Genre: Retro
Computer test: Resolution time : 1 h 24 mn 24.56 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
paul: Stelvio 2.0 found the solution in 2 minutes.
FEN: rn4kr/1p1pnp2/1p2p1p1/2p5/2B1P3/3QP1P1/1BN1NPP1/R1K4R
Reprints: Tim Krabbé's Website (57) 2000
feenschach 153 10-12/2003
H24 FIDE Album 1995-1997 2004
(79) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 1997-01-09
Last update: A.Buchanan, 2024-04-05 more...

5 - P0008653
Thierry Le Gleuher
12858v British Chess Magazine 1993
2. ehrende Erwähnung

(15+15) C+
BP in 24,0

1. a4 Sf6 2. Ta3 Sd5 3. Tc3 Sb4 4. Txc7 Sa2 5. Tc3 Da5 6. h4 b6 7. Tch3 La6 8. g3 Ld3 9. Lg2 Sa6 10. Ld5 0-0-0 11. Sf3 Kb8 12. 0-0 Tc8 13. Th1 Tc3 14. Lc4 Ta3 15. b3 Ka8 16. Lb2 Sb8 17. Lf6 exf6 18. Dc1 Le7 19. Db2 Tc8 20. Dd4 Tc5 21. Sc3 Th5 22. Ta1 Dg5 23. Kf1 f5 24. Ke1 Lf6
play all

paul: Checked with Euclide for the first 19 moves (~45 min) (2014-07-04)
more ...
comment

Keywords: Unique Proof Game, Interchange (TT), Castling, Castling Paradox
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:02:47 Minuten. (hh:mm:ss) Keine Lösung: BP 23.0, BP 23.5.
FEN: kn6/p2p1ppp/1p3b2/5pqr/P1BQ3P/rPNb1NP1/n1PPPP2/R3K2R
Input: Gerd Wilts, 1997-05-19
Last update: A.Buchanan, 2023-04-01 more...

6 - P0501318
Peter Kniest
feenschach 12/1973
5. Lob
27. Thematurnier

(3+4) cooked
h#4

1. Df8 Lf1 2. Le6 Se3 3. Dc5+ Sc4+ 4. Kd5 Lg2#

NL:
1. Df4 Lf1 2. Le6 Se1 3. Kd5 Sd3 4. Dd6 Lg2#
play all

Yuri Bilokin: correction bQf1-c1, then a1=b1 8/8/4k3/8/3B3p/2bK4/7N/2q5 (3+4) h#4

1.Qg5 Bg1 2.Bf6 Sf3 3.Qd5+ Sd4+ 4.Ke5 Bh2# (MM) (2023-05-24)
comment

Keywords: Interchange (LS (20))
Genre: h#
FEN: 8/8/8/4k3/2B3p1/1bK5/6N1/5q2
Input: hpr, 1996-06-14
Last update: hpr, 1999-05-22 more...

7 - P0501885
Mykola Nagnibida
2582 Gazeta Czestochowska 16/05/1979

(3+9) cooked
h#3

1. Df5 Td4 2. Se6 Lc4 3. Df4 Td5#

NL:
1. Td4 Le4 2. Td6 Lg6 3. Sd5 Te4#
1. Dg8 Txe4+ 2. Kf5 Te8 3. Dg5 Le4#
play all

Yuri Bilokin: correction wKa4-b4, bPb7-f7, bPb6-e3, bPg4-f3, bPf4(-bSf4), -bBa7, then rotate 90 8/8/1pr1pp2/2qkrp2/3B4/4R3/4K3/8 (3+8) h#3
1.Qd6 Re4 2.Rc5 Be3 3.Qc6 Rd4# (MM)

Blocking piece replacement (bQ-bR)
Blocking piece replacement (bR-bQ)
Pelle move (white)
Place exchange (bQ/bR)
Place exchange (wR/wB)
Model mate × 1 (2023-05-19)
comment

Keywords: Interchange (TL ds)
Genre: h#
FEN: 8/bp6/1p2qr2/3Bk3/K1R1rnp1/8/8/8
Input: hpr, 1996-07-12
Last update: hpr, 1999-06-04 more...

8 - P0502798
Achim Schöneberg
3849 Die Schwalbe 74 04/1982
3. Preis

(3+12) C+
h#4
b) sSe4 tauschen mit sLh5

a) 1. Sxc5 Sxf5 2. Te4 Sd4 3. Ke3 Kg3 4. Sd3 Sc2#
b) 1. Kd4 Sxh5 2. Ld3 Kg3 3. Te4 Sg7 4. Ke3 Sxf5#
play all

klären Datum
Erich Bartel: die erste Zeile stimmt.Dort steht die Aufgabe auf Seite 459
als Urdruck. (2007-10-12)
Achim Schöneberg: Siehe P0502915 (2022-10-05)
comment

Keywords: Interchange (kts,kls)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/2p4q/r1P2p1b/4n3/3krpNK/3pp3/6b1
Reprints: 3849 Die Schwalbe 06/1982
Input: hpr, 1996-07-28
Last update: hpr, 1999-06-05 more...

9 - P0502815
Shergil Sukhitashvili
1656 Gazeta Czestochowska 05/03/1974

(9+12) cooked
h#2
4.1...

1) 1. Ld3 e3 2. Le2 e4#
2) 1. Se3 g3 2. Sg2 g4#
3) 1. Sg5 Lg8 2. Sf7 Lh7#
4) 1. Sf8 Txd6 2. Sg6 Lxe6#

NL:
1. Dg3 dxe5 2. Df4 Sg7#
1. Th1 dxe5 2. Sxe5 g4#
1. Ld3 exd3 2. De4 dxe4#
play all

Kees: I don't know how to send a diagram, but I fixed this one with a whole different position, but with the 4 thematic solutions I can send a FEN-notation with the 4 solutions

3K4/1pr1B1p1/s1pp2P1/2Rpk1S1/2Pb1sP1/3pPp2/4P3/3q1r2

1.Fc3 exd3 2.Fd2 d4‡
1.Ch3 exf3 2.Cf2 f4‡
1.Cxg6 Ff8 2.Ce7 Fxg7‡
1.Ch5 Txc6 2.Cf6 Fxd6‡ (2023-06-09)
comment

Keywords: Interchange (Bl,Bs,Ls)
Genre: h#
FEN: 4K3/2pr1B1n/3pp2p/3Rbk1N/3Pb1nP/5P2/4P1P1/4q1r1
Input: hpr, 1996-07-28
Last update: hpr, 1999-06-05 more...

10 - P0502915
Achim Schöneberg
3849v Die Schwalbe 155 10/1995

(2+7) C+
h#4
b) sLc1 nach d4 (-sSd4)

a) 1. Sb3 Se3 2. Td4 Sd5 3. Kc4 Kc2 4. Sc5 Sb6#
b) 1. Kd5 Se1 2. Lc5 Sg2 3. Td4 Kc2 4. Kc4 Se3#
play all

Achim Schöneberg: AS: Siehe P0502798 (2022-10-05)
comment

Keywords: Interchange (kts,kls), Minimal
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/4p3/1pk5/1prn4/8/2N5/1Kb5
Input: hpr, 1996-08-28
Last update: Achim Schöneberg, 2021-12-09 more...

11 - P0516267
Johannes Joensen
12185 Tidskrift för Schack 10/1966

(3+4) cooked
h#4

1. Kc3 Sb7 2. Kc4 Ke3 3. Kd5 Kd2 4. Ke4 Sd6#

NL:
1. Lh8 Kxf4 2. Kd3 Lg2 3. Sc2 Se4 4. Ld4 Lf1#
1. Sc2 Lc6 2. Sh3 Kf3 3. Kd3 Se4 4. Ld4 Lb5#
play all

Verstellung SL

Als Autor ist in der 'Tidskrift för Schack' angegeben: Johannes Joensen, Haldorsvik
Yuri Bilokin: correction +bRb6, +bRg5, +bPg3, then rotate 90 8/3r1p2/4n3/3bK3/2N1n1k1/8/2r5/B7 (3+7) h#4

1.Kf3 Sb2 2.Ke3 Kf5 3.Kd4 Kg4 4.Ke5 Sc4# (MM)

BK moves only
Place exchange (bK/wK)
Rovno theme (bK/wK)
Switchback (wS, captureless, 1)
Model mate × 1
Battery mate (2023-05-24)
comment

Keywords: Interchange (Kk(5)), Line closure, Aristocrat, Miniature
Genre: h#
FEN: B7/8/3N4/4b3/3nKn2/8/3k4/8
Input: Andreas Mokosch, 1997-07-25
Last update: Mario Richter, 2023-05-24 more...

12 - P0524803
Shlomo Seider
9050 Schach-Echo 08/1976

(9+10) cooked
h#4
b) wBg2 nach c2

a) 1. Sec2 Lde4 2. De1 d5 3. Ld2 d4 4. Se3 Ld3#
b) 1. Sxd3 Lfe4 2. Te1 f5 3. T2f1 f4 4. Sf2 Lf3#

NL:
b) 1. Sxd3 Lh3 2. Te1 Le4 3. Txf3 Lg2 4. Sf2 Lxf3#
play all

Gerald Ettl: Verbesserungsvorschlag 8/8/3p1p1p/4B1B1/4P1P1/1p2PbP1/1Pp1qkrP/1nK1bnr1
h#4
b) wBh2-d2
a) 1.Sfd2 Le5-f4 2.Df1 e5 3.Lf3-e2 e4 4.Sf3 Le3#
b) 1.Sxe3 Lg5-f4 2.Tf1 g5 3.Tgg1 g4 4.Sg2 Lg3#
C+ (2023-10-06)
comment

Keywords: Echo, Interchange (LBBdls,LBBtts)
Genre: h#
FEN: 8/8/8/3B1B2/3P1P2/p2PbP2/Pp1qkrP1/nK1bnr2
Input: Markus Manhart, 1998-02-16
Last update: hpr, 1999-11-04 more...

13 - P1000475
Michel Caillaud
P0056 StrateGems 10 04-06/2000
4. Preis

(15+15) C+
BP in 18,5

1. a4 e5 2. a5 e4 3. Ta4 e3 4. Te4+ Se7 5. b4 Sbc6 6. Lb2 Sd4 7. Dc1 Sxe2 8. Lf6 Sg3 9. d4 Sgf5 10. Ke2 Sh6 11. Kf3 Shg8 12. Kg4 e2 13. Dh6 e1=S 14. Se2 Sd3 15. Sc1 Sc5 16. Ld3 Sa6 17. The1 Sb8 18. T1e3 a6 19. Txe7+
play all

Pronkin-Thema mit Platzwechsel: Sg8 wird auf e7 geschlagen, sSb8 wandert nach g8, umgewandelter sSe1 geht nach b8. Zyklischer Platzwechsel von sSb8, sSg8 und sBe7.

Henrik Juel: Partial testing with Natch 3.1
18.0 moves with sDTLSPe7 and wTd5; only sSe7 works (2018-12-14)
Mario Richter: @Henrik: Did you mean "... and wTe4"? (2018-12-15)
Henrik Juel: Yes, I did, Mario (2018-12-16)
more ...
comment

Keywords: Unique Proof Game, Pronkin Theme (s), Interchange
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.2 04:02:35 Stunden. (hh:mm:ss) Keine Lösung BP 17.5, BP 18.0. Checked by Stelvio 1.2 in about 5 hours.
FEN: rnbqkbnr/1pppRppp/p4B1Q/P7/1P1P2K1/3BR3/2P2PPP/1NN5
Reprints: (7) Quartz 21 07-09/2002
feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-05-30 more...

14 - P1001055
Satoshi Hashimoto
11046 Die Schwalbe 187 02/2001

(14+15) C+
BP in 17,5

1. Sc3 b5 2. Sa4 b4 3. c3 b3 4. Dc2 bxc2 5. Tb1 cxb1=D 6. Sf3 De4 7. d3 e6 8. Le3 Df6 9. Sd2 Dff3 10. exf3 Lc5 11. Le2 d6 12. 0-0 Kd7 13. Ta1 Kc6 14. Sb1 Kb5 15. Lc1 Le3 16. Kf1 c5 17. Ke1 Sc6 18. Lf1
play all

Henrik Juel: Natch 3.3 just needed less than a second to test this proof game (2023-06-12)
comment

Keywords: Unique Proof Game, Ceriani-Frolkin Theme (d), Interchange (T), Castling, Switchback (LL)
Genre: Retro
Computer test: Resolution time : 58.79 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: r1b3nr/p4ppp/2npp3/1kp5/N3q3/2PPbP2/PP3PPP/RNB1KB2
Input: Gerd Wilts, 2001-02-11
Last update: Gerd Wilts, 2005-12-30 more...

15 - P1007295
Joost de Heer
11786 Die Schwalbe 02/2003
4. ehrende Erwähnung

(8+14) C+
BP in 15,5

1. h4 e6 2. Th3 Df6 3. Te3 Dxb2 4. Sc3 Dxc2 5. La3 Dxa2 6. Da4 Le7 7. 0-0-0 Dxd2+ 8. Kb1 Dxe2 9. Lc1 Dxf2 10. Da1 Dxg2 11. Lxg2 Lxh4 12. Lxb7 Se7 13. Lh1 La6 14. Tf1 Sc8 15. Tee1 Le2 16. Sd1
play all

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comment

Keywords: Unique Proof Game, Interchange, Castling
Genre: Retro
Computer test: C+ Stelvio 1.2 in about 30 minutes. Natch 3.1 did little in an hour
FEN: rnn1k2r/p1pp1ppp/4p3/8/7b/8/4b3/QKBNRRNB
Input: Gerd Wilts, 2003-03-23
Last update: A.Buchanan, 2023-05-11 more...

16 - P1008461
Pavlos N. Moutecidis
10131 Die Schwalbe 173 10/1998
Frank Müller gewidmet
Informalturnier
3. ehrende Erwähnung

(6+2) C+
s#14*

(P. Moutecidis). Das einzügige Satzmatt 1.- D:g8# kann nicht aufrecht gehalten werden. Deshalb muß Weiß sein Ziel anders erreichen:
1. Te6+ Kf5 2. De4+ Kg5 3. Te5+ Kf6! 4. Tf5+ Kg6 5. Tf4+ Kg5! 6. Tg4+ Kh6,Kh5 7. Th4+ Kg5 8. Df4+ Kg6 9. Lf5+ Kf6 10. Le4+ Ke6 11. Df5+ Kd6 12. Dd5+ Kc7 13. Db7+ Kd6 14. De7+ Dxe7#
Trotz des Cookstoppers h3 mit nur 8 Steinen sehr ökonomisch. " Ein schwieriges Fata-Morgana-Problem mit einem unerwarteten Finale " (RJB), ganz typisch für den Autor, der sic h schon über Jahrzehnte mit beachtlichem Erfolge diesem Genre widmet. Wegen des Pseudo-Platzwechsels würde die Aufgabe natürlich nicht 100 -ig in das 180.Thematurnier passen. Danke an PM für die Widmung. Die Vergleichsaufgabe demonstriert die Vielf" altigkeit dieses Zugwechselschemas (* 1.- D:e1# - 1.Tg3+ Kf4 2.Tf3+ Kg4 3.Tf4+ Kh3 4.Dg2+ D:g2#). 8L endwindow
play all

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comment

Keywords: Interchange (DT), Minimal (b)
Genre: s#
Computer test: Gustav 3.1s
FEN: 4K1R1/3BR1q1/6k1/8/7Q/7P/8/8
Input: Gerd Wilts, 2003-06-29
Last update: Dieter Berlin, 2024-01-18 more...

17 - P1009121
Hartmut Brozus
11258 Die Schwalbe 191 10/2001

(2+4)
#7

(H. Brozus). 1.Dd5! Kh1 2.Kd2 Lg1 3.Dh5+ Lh2 4.Df3 Kg1 5.Dd1+ Kf2 6.De2+ Kg1 7.De1#. WW: Sehr verführungsreiche und überzeugende Miniatur! KHS: Hübscher Platzwechsel zwischen wK/wD. Ein Löser bemängelte, dass es lange sieben Züge dauert, bis der Platzwechsel hergestellt ist und nicht schneller geht. Ich finde gerade das als Pfiff des Problems, dass es eben mit einem dreizügigen Dreieckmarsch nicht getan ist!
play all

SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-08-19)
comment

Keywords: Minimal, Interchange (KD)
Genre: n#
FEN: 8/8/8/8/8/6p1/3Q2pb/4K1k1
Input: Gerd Wilts, 2003-07-01
Last update: Olaf Jenkner, 2010-01-23 more...

18 - P1009202
Aleksandar Popovski
11398 Die Schwalbe 193 02/2002

(5+4)
s#3
Platzwechsel-Circe

(A. Popovski). 1.Lh5! [2.Tb3 h:g3 (Sh4) 3.Sf3 g2#] h:g3 (Sh4) 2.Sf3 b3 3.Lb2 g2#; 1.- b3 2.Lb2 h:g3 (Sh4) 3.Sf3 g2# Eigentlich nur eine Phase mit Zugumstellung bei S. Eine etwas laue Suppe (EB). Reziproker Wechsel der der 2. und 3. wZüge und der 1. und 2. sZüge, ein Effekt ohne weiteren Tiefgang (KHS). Drohung und Abspiele sind m. ,E. alle zu ähnlich (PH). Ohne Fortsetzungswechsel ist dieser Tausch der sZüge witzlos - eine sehr magere Aufgabe (AB).
play all

SCHRECKE: C+, popeye 4.87 (2023-09-25)
comment

Keywords: Circe, Interchange
Genre: Fairies
FEN: 8/8/8/8/1p5p/3R1BNk/7p/2B4K
Input: Gerd Wilts, 2003-07-01

19 - P1011934
Gligor Denkovski
R219 Probleemblad 12/2003

(12+13) C+
BP in 20,0

1. e4 h5 2. Dxh5 a5 3. Dxa5 Txh2 4. g3 Txf2 5. Th8 Txd2 6. Lh3 Th2 7. Lh6 Th1 8. Kd2 g6 9. Kc3 Lg7+ 10. Kb3 Lxb2 11. Sc3 Ta6 12. Td1 Tf6 13. Txd7 Tf1 14. Td6 Ta1 15. Ta6 b6 16. Ta8 La6 17. Lf8 Lf1 18. Da7 Sa6 19. Sge2 Db8 20. Lc8 Lc1
play all

Platzwechsel aller Türme und Läufer.

more ...
comment

Keywords: Unique Proof Game, Interchange, Belfort (TTLLttll)
Genre: Retro
Computer test: HJ: I forgot to kill Natch and discovered later that the solution was found Moldenhauer: Computerprüfung: C+ Stelvio 1.11 04:24:38 Stunden. (hh:mm:ss) Keine Lösung: BP 19.0, BP 19.5.
FEN: RqB1kBnR/Q1p1pp2/np4p1/8/4P3/1KN3P1/P1P1N3/r1b2b1r
Input: Gerd Wilts, 2004-01-04
Last update: A.Buchanan, 2023-03-25 more...

20 - P1013083
Roberto Osorio
Jorge Joaquin Lois
Oscar Cuasnicú
R230 Probleemblad 02/2004
3. Lob

(15+15) C+
BP in 21,5

1. g3 Sa6 2. Lg2 Tb8 3. Lc6 bxc6 4. Sf3 Tb3 5. 0-0 Ta3 6. bxa3 e6 7. Lb2 Le7 8. Ld4 Lh4 9. Sc3 Dg5 10. Tb1 Se7 11. Tb8 0-0 12. Db1 Lb7 13. Te8 Sg6 14. Te7 Ta8 15. Te8+ Sf8 16. Td8 Lc8 17. Db7 Db5 18. Ta1 Db1+ 19. Se1 Dd1 20. Sb1 Sb8 21. Lb2 a6 22. Lc1
play all

Aufwändige Manöver zum Einschleusen des wTa1 nach d8 und der sD nach d1. wTa1/sTa8 sind wTh1/sTh8.

Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:10:35 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment

Keywords: Unique Proof Game, Promenade, Interchange, Castling (2), Switchback (LSls), Impostor (Tt)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rnbR1nk1/1Qpp1ppp/p1p1p3/8/7b/P5P1/P1PPPP1P/RNBqN1K1
Reprints: (81) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2004-02-20
Last update: Silvio Baier, 2023-03-20 more...

21 - P1013131
Eric Pichouron
R138 Problemesis 38 04/2004

(16+13) C+
BP in 22,0

1. c4 a5 2. c5 a4 3. c6 a3 4. cxb7 Sc6 5. bxa8=T La6 6. Da4 Db8 7. Dh4 Kd8 8. g4 Kc8 9. Lg2 Kb7 10. Le4 Da7 11. Txf8 Sf6 12. Ta8 Tb8 13. Lc2 Kc8 14. d3 Kd8 15. Lh6 Tc8 16. Tb8 Ke8 17. Tb6 Ta8 18. Sd2 Db8 19. Tc1 Dd8 20. Lb1 Sb8 21. Tcc6 Sg8 22. Tf6 Lc8
play all

more ...
comment

Keywords: Unique Proof Game, Interchange, Switchback (kdlss), Impostor (t)
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.11 48:53:36 Stunden. (hh:mm:ss) Keine Lösung: BP21.0, BP 21.5.
FEN: rnbqk1n1/2pppppp/1R3R1B/8/6PQ/p2P4/PP1NPP1P/1B2K1NR
Input: Gerd Wilts, 2004-04-01
Last update: A.Buchanan, 2023-03-13 more...

22 - P1014757
Alexander Hildebrand
7705 feenschach 06-08/1999

(4+3) C+
s#2

1. Sge3! g3 2. Sg4 g2#
play all

Platzwechsel wS/sB in einfachster Form.

3007
SCHRECKE: C+, popeye 4.89 (2023-10-22)
comment

Keywords: Interchange (Sb), Miniature
Genre: s#
FEN: 6R1/8/8/5N2/6p1/7k/6Np/7K
Reprints: 267 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Marcin Banaszek, 2023-10-23 more...

23 - P1014763
Eugeniusz Iwanow
784 Problemista 08/1964

(3+4) C+
s#2
b) wBe7 nach g7
c) ferner sBf7 nach h7
d) ferner Platztausch wBg7, sBh7
e) ferner wBh7 nach f7

a) 1. e8=S! droht 2. Sf6 b2#
1. ... f5 2. Tf4 b2#
b) 1. g8=S! droht 2. Sf6 b2#
1. ... f5 2. Tf4 b2#
c) 1. g8=S! droht 2. Sh6 b2#
1. ... h5 2. Th4 b2#
d) 1. h8=S! droht 2. Sg6 b2#
1. ... g5 2. Tg4 b2#
e) 1. f8=S! droht 2. Sg6 b2#
1. ... g5 2. Tg4 b2#
play all

2044
SCHRECKE: a)-e): C+, popeye 4.89 (2023-10-22)
comment

Keywords: Drohproblem, Interchange, Promotion, Miniature
Genre: s#
FEN: 8/4Pp2/8/8/2R5/kp6/p7/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Marcin Banaszek, 2023-10-23 more...

24 - P1015570
Alexander Hildebrand
7706 feenschach 06-08/1999

(4+3)
s#3

1. Se3 f4 2. Sf5 f3 3. Dg2+ fxg2#
Platzwechsel wS/sB.
play all

3008
SCHRECKE: C+, popeye 4.87 (2023-10-02)
comment

Keywords: Interchange (Sb)
Genre: s#
FEN: 8/8/8/5pQ1/7P/7k/6Np/7K
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2010-01-23 more...

25 - P1017456
Andrey Frolkin
Kostas Prentos
feenschach 154 2004
2. Preis Retro-Kompositionsturnier

(13+14) C+
BP in 27,5

1. f4 e5 2. f5 e4 3. f6 e3 4. fxg7 exd2 5. Kf2 a5 6. e4 a4 7. e5 a3 8. e6 axb2 9. Sa3 b1=T 10. e7 Tb6 11. Tb1 d5 12. Tb5 d4 13. Lb2 d3 14. Da1 dxc2 15. Ld3 c1=T 16. Se2 Tb1 17. Tc1 d1=T 18. Tc4 Tdc1 19. Lc2 Dd1 20. Ke3 Dh1 21. Kd4 Td6+ 22. Kc5 c6 23. Kb6 Lh3 24. Kxb7 Kd7 25. e8=T Se7 26. g8=T Lh6 27. Tg7 Tdd1 28. Teg8
play all

Zyklischer Platzwechsel der sUWTTb1, c1, d1

Kostas Prentos: C+ Natch 3.3 (13 h 17 min 58 sec) (2022-12-08)
more ...
comment

Keywords: Unique Proof Game, Interchange
Genre: Retro
Computer test: KP: C+ Stelvio 1.0 tested this one in 1 min 46 sec.
FEN: rn4Rr/1K1knpRp/2p4b/1R6/2R5/N6b/PBB1N1PP/Qrrr3q
Reprints: Messigny 05/2004
Input: Gerd Wilts, 2004-06-03
Last update: A.Buchanan, 2023-03-20 more...

26 - P1017633
Michel Caillaud
Nunspeet 2000
Preis

(16+12)
BP in 15,0
Anticirce

1. e4 c6 2. e5 Da5 3. e6 Kd8 4. d3 Dc3 5. exd7[+wBd2] Lh3 6. d4 Sd7 7. d5 Tc8 8. d6 Tc7 9. dxe7[+wBe2] Se7 10. Sa3 Sg6 11. Sb5 La3 12. Sf3 Sdf8 13. Sg5 Te7 14. Sxh7[+wSb1] Th7 15. Sxa7[+wSg1] Sh8
play all

Zweifacher Platzwechsel (wBd2, e2 und wSS).

paul: Cook: 4.d4 Qc3 5.e×d7(Pd2) Bh3 6.Qh5 Sd7 7.d5 Rc8 8.d6 Rc7 9.d×e7(Pe2) Se7 10.Sf3 Sg6 11.Sd4 Ba3 12.Sb5 Sdf8 13.Qh6 Re7 14.Q×h7(Qd1) Rh7 15.S×a7(Sg1) Sh8. (2023-01-16)
more ...
comment

Keywords: Circe (Anti-), Unique Proof Game, Interchange, Tempo Loss
Genre: Retro, Fairies
FEN: 3k1n1n/1p2rppr/2p5/8/8/b1q4b/PPPPPPPP/RNBQKBNR
Input: Gerd Wilts, 2004-07-14
Last update: Alfred Pfeiffer, 2014-06-30 more...

27 - P1066742
Rustam Ubaidullajew
Retros mailing list 25/09/2004
1. Preis Sommerturnier 2003

(8+12)
BP in 16,0

1. Sf3 d5 2. Tg1 d4 3. Sxd4 g5 4. Sb3 Dxd2+ 5. Lxd2 g4 6. Dc1 g3 7. Kd1 gxh2 8. Le1 h1=T 9. S1d2 Th2 10. Tb1 Txg2 11. Sa1 Txf2 12. Lg2 Txe2 13. Sf1 Txc2 14. Lxb7 Txb2 15. Lxa8 Txa2 16. Lh1 Td2+
play all

Moldenhauer: Computerprüfung: C+ Stelvio 1.4 in 17:01:03 Stunden.(hh:mm:ss) (2023-08-17)
comment

Keywords: Unique Proof Game, Phoenix (t), Interchange
Genre: Retro
FEN: 1nb1kbnr/p1p1pp1p/8/8/8/8/3r4/NRQKBNRB
Input: Gerd Wilts, 2004-09-30
Last update: Gerd Wilts, 2006-01-19 more...

28 - P1066789
Göran Wicklund
R259 Probleemblad 5 09-10/2004
5. Preis

(16+11) C+
BP in 29,5

1. h4 Sc6 2. h5 Sd4 3. h6 Sb5 4. hxg7 h5 5. Th3 h4 6. Tg3 h3 7. a4 h2 8. a5 h1=D 9. a6 Dh2 10. axb7 a5 11. bxa8=T Lb7 12. Ta4 Lc6 13. Th4 a4 14. d4 a3 15. d5 a2 16. d6 a1=S 17. dxc7 Sb3 18. Ta1 Sa3 19. c8=T La4 20. Ta8 Db8 21. f4 Kd8 22. f5 Kc7 23. f6 Kb6 24. fxe7 Sf6 25. e8=T Ld6 26. Tc8 Te8 27. g8=T Te7 28. Tge8 Lc7 29. Tgg8 Dd6 30. Th1
play all

Zyklischer Platzwechsel sechs weißer Türme.

more ...
comment

Keywords: Unique Proof Game, Non-standard material, Interchange (TTTTTT), Impostor (TT)
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:05:59 Minuten. (hh:mm:ss) keine Lösung: BP 28.5, BP 29.0.
FEN: RqR1R1R1/2bprp2/1k1q1n2/8/b7/nn6/1PP1P1P1/RNBQKBNR
Reprints: (18) StrateGems 10-12/2007
(80) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2004-10-17
Last update: Silvio Baier, 2023-08-15 more...

29 - P1068194
Gianni Donati
9926 Thema Danicum 121 01/2006

(12+16) C+
BP in 24,0

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
play all

5zügiger Rundlauf der wD und Platzwechsel der wSS.

Reto: A lot faster with Stelvio 1.25, finished in about 1min. (2023-05-29)
more ...
comment

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...

30 - P1068639
Roberto Osorio
Jorge Joaquin Lois
1961 Orbit 32 10/2006
Nicolas Dupont gewidmet
3rd Prize

(15+13) C+
BP in 20,0

1. Sc3 Sc6 2. Sd5 Tb8 3. Sxe7 Kxe7 4. a4 Kf6 5. a5 Kg6 6. a6 Dh4 7. axb7 Sf6 8. bxc8=S Tb3 9. h3 Lb4 10. Sd6 Te8 11. Sf5 Tee3 12. Sg3 Se5 13. f4 Tf3 14. e4 Tf2 15. S1e2 Tbf3 16. Sc3 c6 17. d3 Td2 18. Sb1 Tff2 19. Se2 Kh5 20. Sg1+ Tfe2#
play all

Henrik Juel: Sb1 is actually [Sg1], and Sg1 is [Pa2] promoted on c8.
Testing with Euclide ran out of time. (2011-02-27)
paul: The first 19 moves checked by Euclide in half a day. (2020-12-02)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 01:04:22 Stunde. (hh:mm:ss)
Keine Lösung: BP 19.0, BP 19.5. (2023-03-02)
more ...
comment

Keywords: Unique Proof Game, Interchange
Genre: Retro
Computer test: Stelvio 1.0
FEN: 8/p2p1ppp/2p2n2/4n2k/1b2PP1q/3P3P/1PPrr1P1/RNBQKBNR
Reprints: H30 Vkontakte 2013
H30 Phénix 261/262, p. 10353, 05-06/2016
Input: Gerd Wilts, 2006-12-05
Last update: Silvio Baier, 2023-03-03 more...

31 - P1070008
Roberto Osorio
Jorge Joaquin Lois
13821 Die Schwalbe 232 08/2008

(13+15) C+
BP in 20.5

1. h4 c5 2. Th3 Db6 3. Tb3 Dxb3 4. a3 Da2 5. Sc3 Db1 6. Sh3 Dxc1 7. Dxc1 d6 8. Db1 Sd7 9. Da2 Sdf6 10. 0-0-0 Kd7 11. Da1 Ke6 12. Kb1 Kf5 13. Ka2 Kg4 14. Kb3 Lf5 15. Da2 Tc8 16. Ta1 Tc6 17. Db1 Tb6+ 18. Ka2 Tb3 19. Dd1 b6 20. Sb1 Txh3 21. g3
play all

zweifacher Platzwechsel von Dd1 und Ta1, Rückkehr Sb1

Henrik Juel: The double interchange (Lois theme) is a challenge for solvers
Natch 3.1 did little in an hour
Stopped at pos. 5 (2018-12-26)
Moldenhauer: Computerprüfung: C+ Stelvio 1.2 127:03:03 Stunden. (hhh:mm:ss)
Keine Lösung: BP 19.5, BP 20.0 22:17:49 Stunden. (2023-05-18)
more ...
comment

Keywords: Unique Proof Game, Interchange (DT x2), Switchback (S), Lois Theme (DT), Castling
Genre: Retro
Computer test: Stelvio 1.2
FEN: 5bnr/p3pppp/1p1p1n2/2p2b2/6kP/P5Pr/KPPPPP2/RN1Q1B2
Input: Gerd Wilts, 2008-09-05
Last update: Silvio Baier, 2023-08-15 more...

32 - P1080525
Andrey Frolkin
Kostas Prentos
P0190 StrateGems 34 2006
1. Lob

(14+12) C+
BP in 26,5

1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 hxg2 5. exf8=L Th3 6. Lc5 Tg3 7. Lb6 axb6 8. h4 Taa3 9. h5 Tac3 10. bxc3 Dh4 11. La3 f6 12. Lf8 d6 13. h6 Lf5 14. h7 Ld3 15. exd3 Kf7 16. Df3 Kg6 17. Se2 g1=S 18. h8=T Sh3 19. Th5 Sf4 20. Tb5 Se6 21. Tb2 Db4 22. Th8 Sh6 23. Dg2 Kh5 24. Sc1 g6 25. Lg7 c5 26. Tf8 Sf7 27. Lh8
play all

Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 38 (2018-12-25)
Henrik Juel: Stelvio 1.31 used 18 seconds on my PC (2023-06-13)
more ...
comment

Keywords: Anti-Pronkin (TL), Ceriani-Frolkin Theme (L), Unique Proof Game, Non-standard material, Interchange (LT), Promotion (LsT)
Genre: Retro
Computer test: KP: C+ Stelvio 1.0 (14 seconds)
FEN: 1n3R1B/1p3n2/1p1pnpp1/2p4k/1q6/2PP2r1/PRPP2Q1/RNN1KB2
Input: Gerd Wilts, 2009-01-10
Last update: A.Buchanan, 2023-03-20 more...

33 - P1084240
James Soliman
P0244 StrateGems 46 04-06/2009

(15+14)
BP in 13.0

1. c4 d5 2. Da4+ Sd7 3. Dc6 Sgf6 4. a4 Se4 5. Ta3 Sec5 6. Tf3 Sa6 7. d3 Sab8 8. Lh6 gxh6 9. g3 Lg7 10. Lh3 0-0 11. Txf7 Sf6 12. Lxc8 Kh8 13. g4 Sg8
play all

Henrik Juel: C+ by Natch 3.1 (8 s)
No solution in 12.5 (2018-12-27)
A.Buchanan: Good that you are checking for n-0.5. But why not check for n-1.0 & n-1.5: then it is certain that there is no shorter PG. (2018-12-27)
Henrik Juel: Good to hear from you again, Andrew
I started my Christmas testing project a couple of weeks ago
After testing lots of proof games in n, and making sure that n-.5 or n-1 moves had no solution, I noticed that in that sample n-1 moves never produced a solution, so, being a lazy slob, I now only check n-.5
Even your suggestion is not sufficient, as there exist constructed proof games with unique solutions in n and n plus several moves, but with 'regular' problems I believe that checking n-.5 almost always suffices
So far I have found a handful of cooks and just one example of a shorter solution than stipulated (2018-12-27)
A.Buchanan: If there is a solution in n moves, there are many solutions in n+2.0 moves: that is definite.
A reason for mindlessly testing as n-1.5,n-1.0,n-0.5 before testing for n is that one can catch many (but not all) cooks more easily.
From the solution in n, one can then see whether there might be the chance of an interesting solution in n+k, where k is not a multiple of 2.0. (2018-12-28)
more ...
comment

Keywords: Unique Proof Game, Interchange (ss)
Genre: Retro
FEN: rnBq1rnk/ppp1pRbp/2Q4p/3p4/P1P3P1/3P4/1P2PP1P/1N2K1NR
Input: Gerd Wilts, 2009-04-03
Last update: A.Buchanan, 2023-12-24 more...

34 - P1085398
Jorge Joaquin Lois
Roberto Osorio
13285 Die Schwalbe 223 02/2007
2. Preis

(14+15) C+
BP in 26,5

1. e4 a6 2. Lb5 axb5 3. h4 Ta3 4. h5 Th3 5. a4 c5 6. a5 c4 7. a6 c3 8. dxc3 h6 9. Lg5 hxg5 10. a7 Th6 11. a8=L Ta6 12. h6 b6 13. Ld5 Ta8 14. Lc4 d5 15. h7 Lf5 16. h8=L Lh7 17. Sf3 g6 18. 0-0 Lg7 19. Te1 Kf8 20. Lf1 De8 21. c4 Lc3 22. b3 La5 23. Lb2 Sf6 24. Dd4 Lg8 25. Sd2 Th8 26. Tad1 Sh7 27. Lc1
play all

Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 4 (2018-12-26)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:28:13 Minuten. (hh:mm:ss)
Keine Lösung: BP 25.5, BP 26.0. (2023-04-06)
more ...
comment

Keywords: Unique Proof Game, Pronkin Theme (LL), Interchange (tt), Promotion (LL), Castling
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn2qkbr/4pp1n/1p4p1/bp1p2p1/2PQP3/1P3N2/2PN1PP1/2BRRBK1
Reprints: 74 Die Schwalbe 250A, p. 258, 08/2011
Input: Gerd Wilts, 2009-06-08
Last update: Silvio Baier, 2023-08-15 more...

35 - P1132559
Reto List
Markus Johannes Ott
Basellandschaftliche Zeitung 1979
R. Mäser gewidmet

(5+2) C+
#3

1. Lh3 f3 2. g4 f2 3. Lg2#
play all

B12L ZP3L PT-LB B3a m
more ...
comment

Keywords: Miniature Collection (0340563), Minimal, Miniature, Interchange (wL-wB)
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 8/5N2/8/3N4/2K1kpB1/8/6P1/8
Reprints: 172 Schweizer Schachkompositionen 1976-1986 , p. 65, 1989
Input: Zuncke/Bruder, 2010-09-11
Last update: Dieter Berlin, 2022-09-09 more...

36 - P1150266
H. Bangert
Die Sendung 10/03/1934

(4+2)
#4
b) wTc7->g7

1. Kf4 Kd5 2. Kf5 Kd4 3. Ke6 Ke4 4. Tc4#
play all

m16 m
vf: Nikolai Parschenzew, 10.03.1992, Problemist pribuschja, (a)
Henrik Juel: C+ Popeye 4.61 (2023-11-02)
Henrik Juel: b) 1.Kd4 Kf5 2.Kd5 Kf4 3.Ke6 Ke4 4.Tg4# (2023-11-02)
comment

Keywords: Miniature Collection (0334314), anticipated (P1145947), Interchange (Kk)
Genre: n#
FEN: 8/2R5/4k3/4P3/4K3/4p3/4P3/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2023-11-02 more...

37 - P1175766
Werner Speckmann
52 Westfälische Landeszeitung 09/10/1937

(4+3) C+
#4

1. Kh7 Kf7 2. Th8 Ke7 3. Kg8 Kd8 4. Kf7#
play all

Nur in Notation publiziert, die Zeile für Schwarz fehlt.

A18a2 PT-KT
ND Schwalbe 09-10/1953, Seite 114 mit Quelle 'Rote Erde, 09/1937'
udo.de: erschien mit Diagramm am 4.9. 1937 (die Lösungsbesprechung mit Wiederholung der Stellung in Notation war am 9.10. 1937 erschienen) (2024-03-26)
more ...
comment

Keywords: Miniature Collection (0088288), Interchange, Miniature, anticipated (P1322551)
Genre: n#
Computer test: H. Juel: Popeye 4.61
FEN: 6RK/2p1k3/2B1p3/4P3/8/8/8/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2023-07-27 more...

38 - P1186876
Thierry Le Gleuher
www.ajedrez.com.ar 07/2007
1. Preis Jorge J. Lois 60

(14+15) C+
BP in 21,0

1. d4 Sc6 2. d5 Sd4 3. d6 Sxe2 4. Dd5 Sd4 5. Dc6 dxc6 6. Lf4 Le6 7. Kd2 Lb3 8. Lc4 Dd7 9. Kd3 0-0-0 10. Sd2 Kb8 11. Te1 Ka8 12. Te6 Tb8 13. Tf6 Dc8 14. d7 La4 15. dxc8=D Sb3 16. Dg4 Te8 17. Dd1 Kb8 18. Sgf3 Kc8 19. Te1 Kd7 20. Tee6 Ta8 21. Se5+ Ke8
play all

Henrik Juel: Natch 3.1 made little progress in more than half an hour
It was stopped at pos. 272 (2018-12-25)
more ...
comment

Keywords: Unique Proof Game, Pronkin Theme (D), Interchange (kt), Castling, Castling Paradox (sd hidden), Promotion (D)
Genre: Retro
Computer test: C+ Stelvio 1.11
FEN: r3kbnr/ppp1pppp/2p1RR2/4N3/b1B2B2/1n1K4/PPPN1PPP/3Q4
Input: Gerd Wilts, 2011-02-06
Last update: A.Buchanan, 2023-03-13 more...

39 - P1199302
Tomislav Petrovic
4334 Problemkiste (110) 04/1997

(2+9) C+
ser-PW in 30

1. Kg1 2. Kf1 3. Ke1 4. Kd1 5. Kc1 6. Kb1 7. Ka2 8. Ka3 9. Kb4 19. Kc5 11. Kd6 12. Ke7 13. Kxf6 14. Kg7 15. Kxh7 16. Kh6 17. Kxh5 18. Kh4 19. Kxh3 20. Kh4 21. Kg5 22. h4 23. h5 24. h6 25. h7 26. h8=T 27. Th1 28. Kh4 29. Kh3 30. Kh2 PW
play all

more ...
comment

Keywords: Excelsior, Interchange (K-B), Kindergarten Problem, Seriesmover, Minimal
Genre: Fairies
Computer test: popeye 4.87
FEN: 8/5p1p/5p2/7p/2p5/2pp1k1p/7P/7K
Input: Erich Bartel, 2011-07-22
Last update: Arnold Beine, 2022-10-23 more...

40 - P1208822
Jörg Varnholt
R20 Problemkiste 98 04/1995

(2+2) C+
ser-r-Zd1 in 8
Platzwechselcirce

1. Kh6! 2. Lxf7[+sDg8] 3. Lc4! 4. Lxg8[+sDc4] 5. Le6 6. Lh3 7. Lf1 8. Lxc4[+sDf1] Dd1
play all

more ...
comment

Keywords: Interchange Circe, Seriesmover, Aristocrat, Minimal, Miniature
Genre: Fairies
Computer test: popeye 4.87
FEN: 6B1/5q2/6K1/8/4k3/8/8/8
Input: Hans Gruber, 2011-10-09
Last update: Arnold Beine, 2022-10-28 more...

41 - P1208981
Zdenek Oliva
K187 Problemkiste 100 08/1995

(1+1) C+
Ser-H=20
Platzwechselcirce
sKU=Wesirkönig

10. Kh7 11. Kxh6[Bh7] 13. Kg7 14. Kxh7[Bg7] 18. Kf7 19. Kxg7[Bf7] 20. Kh7 f8=D=
play all

more ...
comment

Keywords: Interchange Circe, Seriesmover
Pieces:

= Vizir King (WK)
Genre: Fairies
Computer test: popeye 4.87
FEN: 8/8/7P/8/8/8/8/5*2k2
Input: Hans Gruber, 2011-10-09
Last update: Arnold Beine, 2022-10-28 more...

42 - P1211205
Henry Tanner
4 Suomen Tehtäväniekat 01/10/2003

(2+2)
ser-h#8
Platzwechselcirce

1. Th3 2. Ta3 3. Txa8 [La3] 4. Tc8 5. Txh8 [Sc8] 6. Th3 (RK) 7. Tc3 8. Txc8 (RK) [Sc3] Lb2#
play all

SCHRECKE: C+, popeye 4.87 (2022-10-23)
comment

Keywords: Interchange Circe, Seriesmover
Genre: Fairies
FEN: B6N/8/8/8/8/8/8/k6r
Input: Hans Gruber, 2011-10-09
Last update: Arnold Beine, 2022-10-23 more...

43 - P1211211
Henry Tanner
10 Suomen Tehtäväniekat 01/10/2003

(2+2)
s#6
a) Couscouscirce mit wD-Chamäleon h1 b) Platzwechselcirce mit wL-Chamäleon h1
sDR=Heuschrecke

a) 1. Dd5S Hxe4 [Sd1] 2. Sc3L Hxb2 [Lc1] 3. Lf4T Hxg4 [Tf1] 4. Kxb2 [He1] Hxg1 [Tf1] 5. Tf3D Hxe2 [Df1] 6. Kc1 Hxe1 [Df1]# (7. Dxe1S [Hd1]??)
b) 1. Lb7T Hxc6 [Ta8] 2. Tc8D Hxb8 [Dh8] 3. Dd8S Hxe8 [Sb8] 4. Sxc6L [Hb8] Hxb5 [Le8] 5. Ka2 Hxf8 [Lb8] 6. Ka3 Hxa8 [Lf8]#
play all

Anton Baumann: b) ist nach Alybadix C+
a) ist unlösbar, bzw, die angegebene Schlussstellung ist nicht matt!
Interessant ist, dass es mit Circe strict eine korrekte Lösung gibt,
und mit Couscouscirce strict 2 Lösungen (2023-12-02)
comment

Keywords: Circe, Interchange
Pieces:

= Locust (HE)
Genre: Fairies
FEN: *1q6*1q/8/8/8/8/8/8/K6Q
Input: Hans Gruber, 2011-10-09
Last update: Hans Gruber, 2011-10-09 more...

44 - P1224144
G. Denkerke
27 Hamburger Tageblatt 21/01/1922

(7+10) C+
s#3*

* 1. ... Lxf2# o.a.
1. Df4 Kxe7 2. Lh4+ Ke8 3. Df2 Lxf2# o.a.
play all

more ...
comment

Keywords: Interchange
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 4k3/4P3/7N/2N4p/7Q/pp6/q1pP1B1p/n1K3br
Input: Frank Müller, 2011-11-08
Last update: Dieter Berlin, 2024-02-22 more...

45 - P1233379
Jörg Varnholt
K43 Problemkiste (87-88) 07/1993

(2+2)
ser-Zh6 in 14
Platzwechselcirce

1.-5.Kc8 6.K\x b7[Tc8] 7.Kb6 8.Lc6! 14.Kh6
play all

SCHRECKE: C+, popeye 4.87 (2022-10-23)
comment

Keywords: Seriesmover, Aristocrat, Minimal, Miniature, Interchange Circe
Genre: Fairies
FEN: B6K/1r6/8/5k2/8/8/8/8
Input: Erich Bartel, 2012-02-28
Last update: Arnold Beine, 2022-10-23 more...

46 - P1233381
Jörg Varnholt
K45 Problemkiste (87-88) 07/1993

(1+3)
ser-Za1 in 17
Platzwechselcirce

1.Ka4 2.K\x b4[Ba4] 6.Kf8 7.K\x g8[Lf8] 9.Ke8 10.K\x f8[Le8] 17.Ka1
play all

SCHRECKE: C+, popeye 4.87 (2022-10-23)
comment

Keywords: Seriesmover, Interchange Circe
Genre: Fairies
FEN: 6b1/8/8/8/1p6/K7/2k5/8
Input: Erich Bartel, 2012-02-28
Last update: Arnold Beine, 2022-10-23 more...

47 - P1263018
Miodrag Mladenovic
S1124 The Problemist 01/1987

(6+6) C+
s#3*

* 1. ... Sg3 2. Sf2+ Se4 3. Sh1 Ta1#
* 1. ... Sf2 2. Sg3+ Se4 3. Sh1 Ta1#
1. Sc7 Sg3 2. Sxg3+ Kf6 3. Sh1 Ta1#
1. Sc7 Sf2 2. Sxf2+ Kf6 3. Sh1 Ta1#
play all

more ...
comment

Keywords: interchange in mating position (Ss), reciprocal changed continuations
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/7R/6k1/3N3R/4N3/p7/rpB4p/1K5n
Input: Frank Müller, 2013-02-22
Last update: Dieter Berlin, 2023-11-19 more...

48 - P1281070
Rolf Kohring
634 mpk-Blätter 11/2013

(4+2)
ser-h#11
Alphabetschach
Platzwechselcirce
b) wLc5 nach e5

1. Sc5[+wLd3] 2. Sa4 3. Sc3 4. Sxd1[+wTc3] 5. Sxf2[+wBd1] 6. Kd4 7. Kxc3[+wTd4] 8. Kd2 9. Ke3 10. Kf3 11. Sxd1[+wBf2] Le2#
1. Sxf2[+wBd3] 2. Ke6 3. Kf7 4. Sg4 5. Kg8 6. Sxe5[+wLg4] 7. Sxd3[+wBe5] 8. Sf4 9. Sg6 10. Sxe5[+wBg6] 11. Sxg4[+wLe5] Td8#
play all

SCHRECKE: a)+b): C+, popeye 4.87 (2022-10-23)
comment

Keywords: Alphabetic Chess, Seriesmover, Interchange Circe
Genre: Fairies
FEN: 8/8/8/2Bk4/8/3n4/5P2/3R2K1
Input: Frank Müller, 2013-12-12
Last update: Arnold Beine, 2022-10-23 more...

49 - P1282567
Theodor Steudel
Problemkiste 12/1992

(2+2)
ser-h#8
Platzwechselcirce
wSU=Nachtreiter

1. h5! 2. h4 3. h3 4. h2 5. h1=N 6. Ne7 7. Nxd5[+wNe7] 8. Nh7 Ng6#
play all

Hübsche Rückkehr durch Rundlauf nach Exzelsior.
SCHRECKE: C+, popeye 4.87 (2022-10-23)
comment

Keywords: Seriesmover, Excelsior, Round Trip, Promotion (Märchen-), Rückkehr nach Umwandlung, Interchange Circe
Pieces:

= Nightrider (N)
Genre: Fairies
FEN: 7k/5K1p/8/3*2N4/8/8/8/8
Reprints: U6 Problemkiste (158) 04/2005
143 Scobs lignea 23/07/2017
Input: Erich Bartel, 2014-01-27
Last update: Arnold Beine, 2022-10-23 more...

50 - P1295956
Michel Caillaud
6965 Phénix 241, p. 9623, 07-08/2014

(16+16) C+
BP in 16,5

1. Sc3 e5 2. Sd5 Lc5 3. Se7 d5 4. e3 Lh3 5. Dg4 a5 6. De6 f5 7. Se2 Sf6 8. Sc3 Tf8 9. Dg8 Ta6 10. Dh8 La7 11. Sg8 Tf7 12. Sb1 Td7 13. Sh6+ Ke7 14. Sf7 Df8 15. Sg5 Se8 16. Sf3 Tf6 17. Sg1
play all

Henrik Juel: Thanks for the solution, Hans; I could not find it
The white knights switch places, very nice proof game (2015-01-26)
Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 1 (2018-12-31)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 05:48:08 Stunden. (hh:mm:ss)
Keine Lösung: BP 15.5, BP 16.0. (2023-03-05)
more ...
comment

Keywords: Unique Proof Game, Interchange (SS), Impostor (SS), Capture-free
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n2nq1Q/bpprk1pp/5r2/p2ppp2/8/4P2b/PPPP1PPP/RNB1KBNR
Input: A.Buchanan, 2015-01-25
Last update: Silvio Baier, 2023-03-20 more...

51 - P1339432
Michael Barth
Silvio Baier
Die Schwalbe 2014

(15+15) C+
PG in 19.0

1. b4 b5 2. Lb2 Lb7 3. Ld4 Ld5 4. Lb6 axb6 5. Sc3 Ta3 6. Se4 Tb3 7. Sg5 Tb1 8. Sxh7 Tc1 9. Tb1 Sc6 10. Tb3 Ta1 11. Db1 Da8 12. Kd1 Kd8 13. Kc1 Kc8 14. Kb2 Kb7 15. Dd1 Ka6 16. Ka3 Tc1 17. Tb1 Le6 18. Ta1 Tb1 19. Sg5 Tb3+
play all

Reto: Mit Stelvio 1.4 dauert das nur noch 7min (2023-06-21)
comment

Keywords: Unique Proof Game, Lois Theme (Tt), Switchback (St), Interchange (Tt x2)
Genre: Retro
Computer test: Stelvio 1.0 (5,5d)
FEN: q4bnr/2ppppp1/kpn1b3/1p4N1/1P6/Kr6/P1PPPPPP/R2Q1BNR
Reprints: H3 The Problemist 26-3, p. 119, 05/2017
Input: A.Buchanan, 2017-09-15
Last update: Silvio Baier, 2023-03-05 more...

52 - P1378454
Vaclav Kotesovec
8871 Sachova skladba 97 2007
dedicated to Ivan Skoba
1. ehrende Erwähnung

(11+9) C+
ser-h==17
Madrasi Rex Inklusive

1. b1=S 2. Sc3 3. d3 4. d2 5. d1=S 6. Sb2 7. Sxe4 8. Sxg5 9. Sxe6 10. g5 11. Sg7 12. g4 13. g3 14. g2 15. g1=S 16. Sxe2 17. Sd4 e8=S==
play all

Judge Maryan Kerhuel (Šachová skladba 122/2014): "Enriched by the theoretical statement about the Madrasi rule applied to e.p. captures, we discover a spectacular cyclical exchange of places by the 3 black pawns which, after promotion to S, return not to their home, but to the neighbour’s home. The scenario is achieved at the cost (unavoidable) of some captures of white pieces."
James Malcom: How is Sg7/g5 not a dualed move order at any point? I suppose I do not understand the words "theoretical statement about the Madrasi rule applied to e.p. captures". (2023-04-16)
Arnold Beine: @James: After 10.g5 this black Pawn is attacked/observed by wPf5 (en passant) and is therefore paralyzed and cannot move. After 11.Sg7 the wPf5 cannot capture the bPg5 any longer, therefore the bPg5 is not observed and can continue his escelsior. No duals, the problem is sound. (2023-04-16)
James Malcom: Ah, I see now; thanks. (2023-04-17)
comment

Keywords: Madrasi (Rex inclusiv), Promotion, Interchange, Seriesmover
Genre: Fairies
Computer test: V. Kotesovec: Popeye (20 h 14 m). Program Popeye tests well the combination of Madrasi and e.p., Alybadix not.
FEN: 8/2pRP1p1/2N1Pk2/p1prKPR1/P1NpQ3/8/1p2B3/b7
Reprints: 86 234 best chess problems [Kotešovec] , p. 131, 2008
Sachova skladba 122 2014
Input: Vaclav Kotesovec, 2020-07-27
Last update: A.Buchanan, 2021-10-22 more...

53 - P1379203
Viktor S. Zheglov
G33 Moscow tourney 2020
1. spezielle ehrende Erwähnung
Miniaturen

(3+3) C+
hs#6
4.1...
Beamtenschach
Platzwechselcirce

1) 1. Sh5 Dh3 2. Db8 Sc6 3. Db3 Dxb3[+wDh3]+ 4. Ke5 Dd3 5. Sf4+ Kg6 6. Dh6+ Kf7#
2) 1. Sf5 Kg6 2. Dc7 Sb5 3. Dc1 Dc4+ 4. Kd6 Dc8 5. Se7 Kf5 6. Dg5+ Ke4#
3) 1. Da2 Sb5 2. Sf5 Da4 3. Dc4 Sc7+ 4. Dh4+ Kg7 5. Ke6 Dd4 6. Dh7+ Kf8#
4) 1. Df2 Sc8 2. Se4 Dg3 3. De3+ Kg6 4. Dc3 Sb6 5. Dxg3[+sDc3]+ Kf6 6. Dg6+ Ke7#
play all

Award: moscowchess.org 08/2020
Judge Anatoly Stepochkin

more ...
comment

Keywords: Aristocrat, Miniature, Interchange Circe, Functionary Chess, Echo, Chameleon Echo
Genre: Fairies
Computer test: popeye 4.61
FEN: 8/n7/7k/3K4/7q/6N1/7Q/8
Input: Marcin Banaszek, 2020-08-20
Last update: Arnold Beine, 2022-12-14 more...

54 - P1385315
Fadil Abdurahmanovic
Bernd Ellinghoven
11179 feenschach 213 05-06/2015
3. Preis
Informalturnier 2015
PR Jakob Leck

(3+15)
h#6
0.1.1...

1. ... Lg7 2. Te6 Lxh6 3. Lh8 Lg7 4. Lf5 La1 5. Lc3 dxc3 6. Ke5 c4#
play all

SCHRECKE: C+, Gustav 4.2a, Brute Force (2022-08-14)
comment

Keywords: discovered checkmate, Anti-Bristol, bi-coloured Bristol, Battery creation, Batteriematt diagonal, corner to corner (L-l), Remote selfblock, Indian, Klasinc theme (L-l), Line opening, Model mate, Interchange (L-l), Switchback (L), Selfblock
Genre: h#
FEN: 7B/8/3n1rpr/3k2p1/4pn2/p2p1ppb/3P1p2/b6K
Reprints: 3-3 feenschach 215, p. 254, 09-10/2015
feenschach 239, p. 334, 01-03/2020
Input: Gunter Jordan, 2021-01-12
Last update: Gunter Jordan, 2022-08-14 more...

55 - P1389511
Christopher Cedric Lytton
R345c The Problemist , p. 438, 07/2004
to Charles Frankiss

(13+13) C+
BP in 17.5

1. Sf3 d5 2. Tg1 d4 3. Sxd4 a5 4. Sb3 Dxd2+ 5. Lxd2 Ta6 6. Dc1 Te6 7. Kd1 Txe2 8. Le1 Te4 9. S1d2 Ta4 10. Lc4 Txa2 11. Sf1 Ta4 12. Ta3 g5 13. Sa1 g4 14. Th3 g3 15. La2 Th4 16. hxg3 a4 17. Thh1 Lh3 18. Lb1
play all

Corrects P1013076
Henrik Juel: C+ Euclide 1.01 (6:22 hours)
It looks like a shift to the left by the white officers (and [Ta1] to h1), but the knights go a longer way:
Sg1-f3xd4-b3-a1 and Sb1-d2-f1 (2021-05-13)
A.Buchanan: the bishops go a longer way too :D (2021-05-13)
Henrik Juel: Ha-ha, yes indeed (2021-05-13)
paul: Stelvio 2.0 tested this in 1 minute. (2024-02-27)
more ...
comment

Keywords: Unique Proof Game, Interchange (TSLDKLST), Ornament
Genre: Retro
Computer test: C+ Euclide 1.01 (6:22 hours) C+ Natch 3.3 (3.37 hours) Stelvio 2.0 tested this in 1 minute.
FEN: 1n2kbnr/1pp1pp1p/8/8/p6r/6Pb/1PP2PP1/NBQKBNRR
Input: A.Buchanan, 2021-05-13
Last update: A.Buchanan, 2024-02-27 more...

56 - P1400469
Zlatko Mihajloski
2229 Gaudium 249 30/09/2021

(2+4) C+
h#7
0.1.1...

1. ... La8! 2. Sc8 Kb7 3. Kb5 Kxc7 4. Ka6 Lxc6 5. Ka7 Lb5 6. Ka8 La6 7. Sa7 Lb7#
play all

Jakob Leck: cf. P1402335 (2022-12-29)
comment

Keywords: Corner mate, Ideal mate, Klasinc theme (L-K, L-k, s-k), Miniature, Minimal (L), Interchange (L-k), Switchback (s), Round Trip (L-5), Schlüssel = Eckzug, Selfblock, Tempo Loss
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 8/nBp5/K1p5/8/2k5/8/8/8
Input: Gunter Jordan, 2022-04-09
Last update: Gunter Jordan, 2022-04-09 more...

57 - P1403691
Otto Trinks
? 1926
1. Preis
Turnier des DSV Wien 1926

(7+7)
#6

1. Lc6! Td4 2. Sc8 Thd7 3. Lg2 Th4 4. Lf1 Thh7 5. Se7+ Tdxe7 6. Lxd3# 5. ... Thxe7 6. Lh3#
play all

SCHRECKE: Nebenlösung
1. Tg2 droht 2. Tf2+ Kg4 3. Ld1+,Te4+ ...
1. ... Td4 2. Sb5 Thh4,Thd7 3. Sxd4+ Txd4 4. Le8 Tg4 5. Te7 (2022-08-17)
Stefan Felber: Mit zusätzlichem sBa6 korrekt! (2022-08-17)
comment

Keywords: Employment steering, Interchange (s. Türme), Knight sacrifice
Genre: n#
FEN: 5N1b/N2r3r/4RpR1/5k2/B7/3pB3/7p/7K
Reprints: 243 Problem-Palette , p. 85, 1970
Input: Dieter Berlin, 2022-08-16
Last update: Dieter Berlin, 2022-08-16 more...

58 - P1404377
Andrzej Szypulski
Bogusz Piliczewski
5351 Tehtäväniekka 3 13/09/2022

(7+1)
#4

1. Ld6+! Kxd4 2. Tb3 Ke4 3. Lc5 ... 4. Te3#
1. ... Kxd6 2. Tc3 Ke5 3. Sf5 Ke4 4. Te3#
3. ... Ke6 4. Te3#
2. ... Ke7 3. Sf5+ Kd8,Ke8,Kf8 4. Tc8#
3. ... Ke6 4. Te3#
1. ... Kxb6 2. Te7 Ka5 3. Lc5 Ka4,Ka6 4. Ta7#
2. ... Ka6 3. Lc5 Ka5 4. Ta7#
play all

Henrik Juel: Stipulation should be #4
With this change, C+ Popeye 4.61 (2022-09-16)
comment

Keywords: Interchange, Rex solus (s), Checking key, Flight giving sacrifice key
Genre: 3#
FEN: 8/8/1N4K1/2k1B3/3N4/P3R1P1/8/8
Input: Rainer Staudte, 2022-09-16
Last update: Gunter Jordan, 2022-09-16 more...

59 - P1404683
Kevin James Begley
P0540 StrateGems 99 07-09/2022
1. ehrende Erwähnung

(14+15)
BP in 9,5

Kontraparraincirce

1. e4 d5 2. La6 Sxa6 3. De2 Lg4 4. exd5 Dxd5[+sBd8] 5. De6[+wBd1] Tc8 6. Qxc8 Dd7[+sTc6] 7. Dxd8+ Dxd8[+sBd7] 8. Sf3[+wDe6] Lxf3 9. De2 Lxe2 10. dxe2[+sDd1]
play all

Kevin Begley: Two pairs of units (wDd1/wBe2 and sDd8/sBd7) exchange places twice. (2022-09-27)
comment

Keywords: Unique Proof Game, Circe (Kontraparrain), Homebase (w), Interchange, Round Trip (DdBb)
Genre: Retro, Fairies
FEN: 3qkbnr/pppppppp/n1r5/8/8/8/PPPPPPPP/RNBQK2R
Input: Kevin Begley, 2022-09-26
Last update: Kevin Begley, 2023-08-22 more...

60 - P1405713
Herbert Göttsch
3167 Kieler Nachrichten 28/11/1992

(5+4) C+
#6

1. Sb5! Kb1 2. Ld4 Ka1 3. e6 Kb1 4. Sc3+ Ka1 5. Kc2 b1=D+ 6. Sxb1#
play all

more ...
comment

Keywords: Battery creation, Batteriematt diagonal, Interchange (wS-wL)
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/8/8/4P3/3N4/2B1p3/pp2P3/k2K4
Reprints: 82 Problemschach-Jahrbuch 1992 D , p. 44, 1992
Input: Dieter Berlin, 2022-11-08
Last update: Dieter Berlin, 2022-11-08 more...

61 - P1407101
Henryk Grudzinski
387 Sinfonie Scacchistiche 147 01-03/2022

(12+13) C+
BP in 17,5

1. Sf3 Sc6 2. Se5 Sd4 3. Sxd7 Sxe2 4. Sb8 Sg1 5. Ld3 Le6 6. Lg6 Lb3 7. axb3 hxg6 8. Ta5 Txh2 9. Th5 Th4 10. Th8 Ta4 11. Dh5 Ta1 12. Dh6 gxh6 13. d4 Lg7 14. Lf4 Lf6 15. Lxc7 Lg5 16. Le5 Lc1 17. Lg7 f6 18. Lf8
play all

Sg1<->Sb8; Ta1<->Th8; Lc1<->Lf8.

Michel Caillaud: previously published : 46th-51st Place, 10th WCCT 2016-17 (2023-01-06)
more ...
comment

Keywords: Unique Proof Game, Belfort (TLStls), Interchange (Ss, Tt, Ll)
Genre: Retro
Computer test: C+ Euclide 1.01
FEN: rN1qkBnR/pp2p3/5ppp/8/3P4/1P6/1PP2PP1/rNb1K1nR
Input: Marcin Banaszek, 2023-01-05
Last update: Marcin Banaszek, 2023-01-06 more...

62 - P1407693
Andrew Buchanan
R575 The Problemist 07/2021

(14+12) C+
BP in 9.5

1. b4 e5 2. b5 La3 3. Lb2 d6 4. Lxe5 Lg4 5. Lxd6 Lxe2 6. Lf8 Lxb5 7. Ld3 Lc1 8. Lxh7 f5 9. Lxf5 Lf1 10. Lc8
play all

more ...
comment

Keywords: Unique Proof Game, Interchange (Ll Ll), bi-coloured Bristol, Line opening, Home-and-Away-Base, Belfort (LLll)
Genre: Retro
Computer test: C+ Stelvio 1.0
FEN: rnBqkBnr/ppp3p1/8/8/8/8/P1PP1PPP/RNbQKbNR
Input: Gunter Jordan, 2023-02-08
Last update: A.Buchanan, 2023-03-14 more...

63 - P1407694
Andrew Buchanan
R576 The Problemist 07/2021

(12+13) C+
BP in 10.0

1. Sf3 Sc6 2. Se5 Sd4 3. Sxd7 Sxe2 4. Sb8 Sg1 5. Ld3 Dxd3 6. c3 Dxc3 7. Sxc3 Sf6 8. Sd5 Se4 9. Sxe7 Sxd2 10. Sg8 Sb1
play all

Henrik Juel: C++ Stelvio 1.0 (2023-02-08)
comment

Keywords: Unique Proof Game, Line opening, Interchange (Ss Ss), Home-and-Away-Base, Belfort (SSss)
Genre: Retro
FEN: rNb1kbNr/ppp2ppp/8/8/8/8/PP3PPP/RnBQK1nR
Input: Gunter Jordan, 2023-02-08
Last update: A.Buchanan, 2023-03-14 more...

64 - P1408895
Sjoerd Hoekstra
H1850 Probleemblad 1/23 01-03/2023

(3+10) C+
h#6
0.1.1...

1. ... Th1 2. Tg1 Th2+ 3. g2 Th1 4. Sg3 Th2 5. Tf1 Th1 6. g1=S Th2#
play all

Yuri Bilokin: you can see h#5 1.Qe2 Rh1 2.Se3 Rh2 3.Kf1 Rxg2 4.f2 Rh2 5.Sg2 Rh1#
get rid of Exchange e1 e3 1K6/6r1/1n6/8/7p/4bppP/5krR/4qn2 (3+10) (2023-04-19)
comment

Keywords: under-promotion (s), Schlüssel = Eckzug, Switchback (T), Rücknahme Schlüsselzug, Selfblock, changed blocks, Interchange (t-s-b zyklisch)
Genre: h#
FEN: 1K6/6r1/1n6/8/7p/4qppP/5krR/4bn2
Input: Gunter Jordan, 2023-04-15
Last update: Gunter Jordan, 2023-07-24 more...

65 - P1409028
Ivan Bryukhanov
Valery Surkov
ru_chess_art 24/04/2023

(5+2)
s#4

1. Tb3! a a4 2. Te4+ b Kxb3 3. Dh2! a3 4. Db2+ axb2#
1. ... Kxb3 b 2. De4! a4 a 3. Te2! a3 4. Tb2+ axb2#
play all

SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-04-25)
comment

Keywords: Interchange, Change of Sacrifices (D-T), Minimal, Miniature
Genre: s#
FEN: 8/8/8/p3Q3/2k5/4R3/8/KN2R3
Input: Rainer Staudte, 2023-04-24
Last update: Rainer Staudte, 2023-04-25 more...

66 - P1410382
Marko Ylijoki
Mirko Degenkolbe
19383 Die Schwalbe 321, p. 147, 06/2023

(2+15)
h#7
0.1.1...
b) sBd5->c4

a) 1. ... dxe8=L 2. Ke7 Lxh5 3. Kf6 Le2 4. Kg6 Lxd3+ 5. Kh5 Lb5 6. Lc4 Kxc2 7. Dg4 Le8#
b) 1. ... dxe8=T+ 2. Kd7 Td8+ 3. Kc6 Txd3 4. Kc5 Td8 5. Dd7 Ke2 6. Kd4 Kf3 7. Kd3 Txd7#
play all

19383 (Marko Ylijoki &Mirko Degenkolbe). a) 1.– d:e8=L 2.Ke7 L:h5 3.Kf6 Le2 4.Kg6 L:d3+ 5.Kh5 Lb5 6.Lc4 K:c2 7.Dg4 Le8# (Mustermatt) b) 1.– d:e8=T+ 2.Kd7 Td8+ 3.Kc6 T:d3 4.Kc5 Td8 5.Dd7 Ke2 6.Kd4 Kf3 7.Kd3 T:d7#. „Rundlauf, Kniest, Koschakin-Thema und Mustermatt in a). Kniest und Maslar mit dem umgewandelten Turm, Bauer(Turm)-Rundlauf von d7 nach d7, Klasinc (weißer Bauer / schwarzer König) in b).“ (Autoren) BK war „verblüfft, dass es keine Nebenlösung mit der weißen Dame“ gab. JB entdeckte das folgende Detail: „In a): Der erwandelte weiße Läufer räumt das Mattfeld für den schwarzen König, die schwarze Dame blockt. In b): Der erwandelte weiße Turm räumt das Mattfeld für den schwarzen König, die schwarze Dame ist Schlagopfer.“ Insgesamt gibt es hier „eine Fülle von strategischen Themen, wie z. B. schwarze Opfer, konsekutiver Umnow, Klasinc, Kniest, Koschakin-Thema, Maslar, Platzwechsel von weißem Turm und schwarzem König, Umwandlung in Turm und Läufer bei Weiß, Rückkehr des weißen Turms, ein Mustermatt. Der hohe Aufwand an schwarzen Steinen hat sich hier gelohnt. Schwierig und schön.“ (KHS) Dazu sehen wir noch einen „Rundlauf des weißen Läufers in a).“ (TZ) „Ein großartiger Hit in Sachen Hilfsmattmehrzüger.“ (JA)

(MD1918)

Autoren:
Kniest, Rundlauf und Mustermatt in a).
Kniest und Maslar in b).
Henrik Juel: C+ Popeye 4.61 (2023-12-30)
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Keywords: Minimal (B), under-promotion key, under-promotion (L,T), Checking key (in b), Round Trip (L-6,T/B-5), Rückkehr nach Umwandlung (B/T in b), Kniest Theme, Maslar theme (in b), Koshakin Theme (in a), Model mate (in a), Klasinc theme (B/T-k), Interchange (B/T-k in b), Twin
Genre: h#
FEN: 3kn3/2pP4/4q2b/3p2pp/7p/1bpp4/n1rp4/3K4
Input: Felber, Volker, 2023-06-17
Last update: Gunter Jordan, 2024-01-12 more...

67 - P1411117
Michael Schreckenbach
Wochenpost 20 11/05/1994

(4+6) C+
#3

1. Sxb3! a3 2. Da1+ Sxa1 3. Sc1#
1. ... Sb4 2. Txb4 a3 3. Da1# 2. ... axb3 3. Ta4#
1. ... axb3 2. Ta8+ Sa3 3. Txa3#
play all

more ...
comment

Keywords: Zugzwang-Goal, Capture key, Epaulettenmatt, Interchange (wD-wS), Blocknutzung
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 1R6/8/8/8/p2p4/1p1p4/k1nK4/N1Q5
Reprints: 677 Problemschach-Jahrbuch 1994 D , p. 320, 1995
Input: Dieter Berlin, 2023-07-24
Last update: Gunter Jordan, 2023-07-24 more...

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