Die Schwalbe

43 problem(s) found in 3146 milliseconds (displaying 43 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT K='Nicht-Partiesatzmaterial' AND A='Gleuher, Thierry'] [download as LaTeX]

1 - P0006477
Thierry Le Gleuher
3350 diagrammes 114 07-09/1995
P0006477
(11+16) C+
BP in 26,0
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. a4 Ta6 5. a5 Td6 6. a6 Txd2 7. a7 d5 8. a8=S Ld7 9. Sb6 cxb6 10. c4 b5 11. c5 Db6 12. c6 Dd4 13. c7 Lc6 14. c8=S Sd7 15. Sd6 exd6 16. e4 Se7 17. e5 Sc8 18. e6 Se5 19. e7 Kd7 20. e8=S Ke6 21. Sf6 gxf6 22. g4 Lg7 23. g5 Te8 24. g6 Lh8 25. g7 Te7 26. g8=S Sf3+
play all play one stop play next play all
Brilliant cavalcade in a very clear construction.
Moldenhauer: Ergänzung: C+ Stelvio 8 Sekunden.
Keine Lösung: BP 25.5. (2023-06-24)
comment
Keywords: Ceriani-Frolkin Theme (SSS), Unique Proof Game, Promotion
Genre: Retro
Computer test: Resolution time : 18 mn 14.45 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: 2n3Nb/1p2rp1p/2bpkp2/1p1p4/3q4/1p3n2/1P1r1P1P/RNBQKB1R
Input: Gerd Wilts, 1996-06-16
Last update: James Malcom, 2023-06-24 more...
2 - P0006492
Thierry Le Gleuher
601v Europe Echecs 438 10/1995
P0006492
(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 play one stop play next 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...
3 - P0006623
Thierry Le Gleuher
1853v Phénix 50 03/1997
3. ehrende Erwähnung
P0006623
(16+16) cooked
BP in 40.5
1. a4 h5 2. Ta3 Th6 3. Tc3 Tb6 4. Tc4 Tb3 5. Sc3 Ta3 6. b3 Ta1 7. La3 d5 8. Db1 Lf5 9. Kd1 Lh7 10. Kc1 g6 11. Kb2 Lh6 12. Da2 Tc1 13. Sb1 Le3 14. Kc3 Lb6 15. Kd3 c5 16. Ke3 Sc6 17. Kf4 Dc7+ 18. Kg5 0-0-0 19. h4 Td6 20. Th3 Tf6 21. Te3 Tf3 22. Te6 Sf6 23. Kh6 Th3 24. Kg7 Th1 25. Kf8 Dh2 26. g3 Se5 27. Tc6+ Kd7 28. Tc8 Ke6 29. Lg2 Kf5 30. Le4+ Kg4 31. Sf3 Kh3 32. Lf5+ Kg2 33. Tg4 Lg8 34. Sd4 Sh7+ 35. Ke8 Sf3 36. Kd7 Kf1 37. Te8 Ke1 38. Kc8 Kd1 39. Kb8 Te1 40. Lc8 Sg1 41. f3
play all play one stop play next play all
Yoav Ben-Zvi: The cook found in P0002554 re-opens the question of the current length record for unique capture-free SPG. A search in PDB finds this problem, assuming it is sound, to be the record holder, until Unto Heinonen publishes a correction (expected very soon). Prior to publication of this problem the record was 38.5, in Michel Caillaud's P0002187. (2019-07-10)
Michel Caillaud: cooked (testing last moves with Jacobi 0.7.5 and constraints) :
16...Sd7 17.h4 Tc8 18.Th3 Tc6 19.Kf4 Te6 20.Tf3 Te3 21.Kg5 Db8 22.Tf6 Th3 23.Tc6 Sgf6 24.Kh6 Th1 25.Kg7 Dh2 26.g3 Se5 27.Lg2 Kd7 28.Tc8 Ke6 29.Kf8... (2021-02-13)
James Malcom: And thus, another giant falls. (2021-02-13)
A.Buchanan: Did Unto find a fix? (2021-02-14)
Michel Caillaud: Unto published a correction of P0002554 in StrateGems (42,5 moves, january 2020), not C+ of course... (2021-02-14)
James Malcom: May you input it into PDB please, Michel? (2021-02-14)
James Malcom: Thanks for the email, Michel. Unto's correction can now be seen in the database: P1386520 (2021-02-15)
more ...
comment
Keywords: Unique Proof Game, Capture-free, Move Length Record
Genre: Retro
FEN: 1KB1R1b1/pp2pp1n/1b4p1/2pp3p/P2N2RP/BP3PP1/Q1PPP2q/1Nrkr1n1
Reprints: H34 FIDE Album 1995-1997 2004
Input: Gerd Wilts, 1996-07-07
Last update: James Malcom, 2021-02-16 more...
4 - P0008653
Thierry Le Gleuher
12858v British Chess Magazine 1993
2. ehrende Erwähnung
P0008653
(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 play one stop play next 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...
5 - P0008971
Thierry Le Gleuher
645 Europe Echecs 460 10/1997
P0008971
(8+14) cooked
shc#16
1. Sc8 2. Sxb6 3. Sxa4 4. Sb2 5. Sd3 6. Se1 7. Sf3 8. exd3ep 9. Kd4 10. Ke4 11. Sd4 12. gxf3ep 13. Kf4 14. Kg4 15. f4 16. Sf5 exf3#
play all play one stop play next play all
NL. Verbesserung 1998 erschienen: P1000933
Cook: 1. Lf7 2. Txe5 3. Kd5 4. Ke6 5. Kf6 6. Sg7 7. Se6 8. Tg6 9. Dh7 10. Dg7 dxe5#

außerdem Dual in der AL
1. Sc8 2. Sxb6 3. Sxa4 4. Sc5
James Malcom: Where is the cook? (2021-09-14)
comment
Keywords: Seriesmover, Consequent, En passant (x2)
Genre: Retro, Fairies
FEN: 8/4n3/1P2b3/3rPprn/P1kPpPpq/2p1p1p1/4P1Pb/7K
Input: Gerd Wilts, 1998-06-26
Last update: Mario Richter, 2021-09-16 more...
6 - P0009071
Thierry Le Gleuher
3871 diagrammes 123 10-12/1997
P0009071
(9+10)
shc#10
1. c5 2. c4 3. c3 4. c2 5. c1=S 6. Kf7 7. Kg6 8. Kh5 9. Kxh4 10. h5 g3#
play all play one stop play next play all
Vor Kf7-e8 geschah Bg6xh7, deshalb muß zuerst einer der sB durch Umwandlung eliminiert werden.

In der Diagrammstellung haben die Bauern jeweils alle fehlenden gegnerischen Steine geschlagen:
W: Bdxexfxgxh, Baxbxa (oder Bcxbxa)
S: Bfxg, Bdxcxb, Bexdxcxb, Bbxa

Nach 1. Kf7? oder 1. Kf8 2. Kg7 3. Kg6 hätte W jeweils keinen letzten Zug. (R: h3-h4 sperrt den Th1 aus, der aber auch zu den Schlagopfern der sBB gehörte).
Also muß im Vorwärtsspiel zunächst eine Stellung mit geänderter Schlagbilanz erreicht werden.
Der Versuch 1. Kf8 2.Kg8 3. Kxh7 4. Kg6 5. Kh5 6. Kxh4? - aber nun hat W keinen letzten Zug - zeigt, daß der wBh7 erhalten bleiben muß, also muß die virtuelle Rücknahme h2,h3-h4 ermöglicht werden. Dies geschieht durch "Elimination" des Bc7, indem dieser auf c1 umwandelt. Bei einem sUW-Lc1 würden weiterhin 7 sBB-Schläge erforderlich sein, sUW-Dc1 oder sUW-Tc1 böten Schach, sodaß nur ein sUW-Sc1 übrig bleibt.
Nach 1. c5 2. c4 3. c3 4. c2 5. c1=S 6. Kf7 hat W nun h2,h3-h4 als Rücknahmemöglichkeit, weil nun der wTh1 nicht mehr notwendig als Schlagobjekt benötigt wird.
Henrik Juel (PDB 2021-09-15): This is one of the few shc#'s without ep capture and/or castling
Henrik Juel: I don't agree entirely with you comment, James; this seems clearer:
1.Kf7? does not work, because now White has no last move ([Th1] was captured by a pawn)
1.Kf8 2.Kg7 3.Kg6? fails for the same reason
After 5.c1=S 6.Kf7 last move was h3-h4 or h2-h4
This is one of the few shc#'s without ep capture and/or castling (2021-09-15)
James Malcom: Henrik, what comment of mine? I merely edit swapped some text. (2021-09-15)
Henrik Juel: OK, so it was probably Gerd who wrote it in 1998; the early updates are no longer available, when you click on 'more...'
The german text roughly translates to:
Pg6xh7 happened before Kf7-e8, so first one of the black pawns must be eliminated by promotion.
I still like my comment better... (2021-09-15)
comment
Keywords: Seriesmover, Consequent, Promotion (s), Excelsior
Genre: Retro, Fairies
FEN: 4k3/2p4P/7p/P5p1/pp4pP/bp6/pP2PPP1/K4B2
Input: Gerd Wilts, 1998-06-26
Last update: Mario Richter, 2021-09-16 more...
7 - P0009092
Thierry Le Gleuher
3631 diagrammes 119 10/1996
P0009092
(10+15) C+
BP in 27,5
1. Sf3 d5 2. Se5 Le6 3. Sc4 dxc4 4. h4 Dd4 5. Th3 Sd7 6. Tb3 cxb3 7. a3! Lc4 8. Ta2 bxa2 9. a4 axb1=S 10. a5 Sc3 11. a6 Sxd1 12. axb7 Se3 13. b8=L Sf5 14. Kd1 Sxh4 15. Ke1 f5 16. Kd1 Kf7 17. Ke1 Kg6 18. Kd1 Kh5 19. Ke1 g6 20. Kd1 Lg7 21. Ke1 Le5 22. Kd1 Sgf6 23. Ke1 Td8 24. Kd1 Sf8 25. Ke1 Td5 26. Kd1 Ta5 27. Ke1 Dc5 28. Kd1
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 4 Sekunden.
Keine Lösung: BP 26.5, BP 27.0. (2023-03-30)
comment
Keywords: Unique Proof Game, Pendulum (K x15)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rB3n2/p1p1p2p/5np1/r1q1bp1k/2b4n/8/1PPPPPP1/2BK1B2
Input: Gerd Wilts, 1998-06-26
Last update: James Malcom, 2023-05-02 more...
8 - P0009110
Thierry Le Gleuher
2799 Phénix 62 04/1998
P0009110
(14+13) C+
BP in 22,5
1. g3 h5 2. Lh3 Th6 3. Kf1 Te6 4. Kg2 f6 5. Kf3 Te3+ 6. Kf4 e5+ 7. Kf5 Lb4 8. Kg6 De7 9. Kh7 Dc5 10. Kxg8 d6 11. Kxg7 Lg4 12. Kg6 Lf3 13. exf3 Te1 14. Se2 Tg1 15. Kf5 Tg2 16. Te1 a5 17. Sg1 a4 18. Te3 Ta5 19. Tb3 axb3 20. Ke4 bxa2 21. Kd3 e4+ 22. Ke2 e3 23. Ke1
play all play one stop play next play all
paul: Sol.: 1.g3 h5 2.Bh3 Rh6 3.Kf1 Re6 4.Kg2 f6 5.Kf3 Re3+ 6.Kf4 e5+ 7.Kf5 Bb4 8.Kg6 Qe7 9.Kh7 Qc5 10.Kxg8 d6 11.Kxg7 Bg4 12.Kg6 Bf3 13.exf3 Re1 14.Se2 Rg1 15.Kf5 Rg2 16.Re1 a5 17.Sg1 a4 18.Re3 Ra5 19.Rb3 axb3 20.Ke4 bxa2 21.Kd3 e4+ 22.Ke2 e3 23.Ke1 (Ra4 is in a5)
The King captures an officer on its place and return.
For comparison, see P1013070 and P1007320 (2008-04-25)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 09:10:17 Stunden.
Keine Lösung: BP 21.5, BP 22.0, Prüfzeit 02:01:51 Stunden. (2023-02-17)
Reto: A good example of Stelvio's progress: Stelvio 1.5 only needs 40min on my notebook. (2023-08-19)
comment
Keywords: Unique Proof Game, Round Trip (K)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n2k3/1pp5/3p1p2/r1q4p/1b6/4pPPB/pPPP1PrP/RNBQK1N1
Reprints: 2799v Phénix 146 12/2005
Input: Gerd Wilts, 1999-02-27
Last update: Silvio Baier, 2023-03-02 more...
9 - P1000488
Thierry Le Gleuher
P0030 StrateGems 04-06/1999
Sam Loyd gewidmet
3. Preis
P1000488
(14+14) C+
BP in 25,5
1. d4 g5 2. Lf4 g4 3. Kd2 g3 4. hxg3 Sc6 5. Th6 Se5 6. Tb6 Sf3+ 7. exf3 axb6 8. Lc4 Ta3 9. Df1 Tc3 10. Sa3 h5 11. Te1 h4 12. Te6 h3 13. Tc6 dxc6 14. Ke2 Lf5 15. Le6 Da8 16. Lc8 e6 17. d5 Se7 18. d6 Sg6 19. d7+ Ke7 20. d8=T Th4 21. Td1 Sh8 22. Ta1 Kd8 23. Sb1 La3 24. Lc1 Tb4 25. Ld7 Le4 26. Dd1
play all play one stop play next play all
Hervorragend: Pronkin-Thema mit dem völlig eingeschlossenen wTa1, Switchback von Sb1, Lc1 und Dd1. Ein Rätsel im Geiste von Sam Loyd.
Henrik Juel: Natch 3.1 did nothing for an hour (2018-12-13)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 © Reto Aschwanden
33 Minuten, 1 Lösung, Notation OK.
Stelvio Histogramme/Strategien 40, vor der Lösung wegen der Lösezeit
mit Stelvio berechnet. (2023-02-08)
comment
Keywords: Unique Proof Game, Pronkin Theme (T), Switchback (SLD)
Genre: Retro
Computer test: Stelvio 1.0
FEN: q2k3n/1ppB1p2/1pp1p3/8/1r2b3/b1r2PPp/PPP1KPP1/RNBQ2N1
Reprints: feenschach 153 10-12/2003
A) Quartz 23 01-03/2004
H57 FIDE Album 1998-2000 2007
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-02 more...
10 - P1000543
Thierry Le Gleuher
P0008v StrateGems Vol.1 10-12/1998
3. ehrende Erwähnung
P1000543
(14+15) C+
BP in 21,5
1. a4 f5 2. a5 Sf6 3. a6 bxa6 4. Ta3 Lb7 5. Tg3 Lf3 6. d3 Sc6 7. Lf4 Tb8 8. Ld6 exd6 9. gxf3 De7 10. Lh3 Df7 11. Lg4 Le7 12. Lh5 Ld8 13. Lg6 h5 14. Lh7 Da2 15. Lg8 Tb3 16. Lc4 d5 17. Dd2 Kf7 18. Db4 Te8 19. Db8 Te3 20. Lb5 Se5 21. Lc6 Se4 22. Lb7
play all play one stop play next play all
Lange, 10zügige Wanderung des wLf1.
Henrik Juel: Natch 3.1 did absolutely nothing in an hour (2018-12-12)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 07:04:17 Stunden. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment
Keywords: Unique Proof Game, Promenade (L)
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1Q1b4/pBpp1kp1/p7/3pnp1p/4n3/1r1PrPR1/qPP1PP1P/1N2K1NR
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-20 more...
11 - P1000641
Thierry Le Gleuher
R047 Probleemblad 03/1999
P1000641
(15+11) cooked
KBP 19,5
1. a4 h5 2. a5 h4 3. a6 h3 4. axb7 hxg2 5. h4 g5 6. Th3 g4 7. Td3 g3 8. Sf3 g1=S 9. Txd7 Sh3 10. Lxh3 g2 11. d3 g1=L 12. Kf1 a5 13. Se1 a4 14. f3 Le3 15. Lxe3 a3 16. Sd2 a2 17. Tc1 a1=D 18. Sb3 Da5 19. Dd2 Dc3 20. Dxc3
play all play one stop play next play all
Moldenhauer: Computerprüfung: Cooked Stelvio 1.31 8 Sekunden.
Keine Lösung: BP 19.0.
Beispiel: 1.a4 h5 2.a5 h4 3.a6 h3 4.axb7 hxg2 5.h4 g5 6.Th3 g4 7.Td3 g3
8.Sf3 g1=S 9.Txd7 Sh3 10.Lxh3 g2 11.d3 g1=S 12.Kf1 a5 13.Se1 Sf3 14.Le3 Sd2+
15.Dxd2 a4 16.Dc3 a3 17.Sd2 a2 18.Tc1 a1=S 19.f3 Sb3 20.Sxb3 (2023-06-19)
comment
Keywords: Unique Proof Game, Homebase
Genre: Retro
FEN: rnbqkbnr/1PpRpp2/8/8/7P/1NQPBP1B/1PP1P3/2R1NK2
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-08-15 more...
12 - P1000770
Thierry Le Gleuher
R22 Problemesis 17 10/2000
2. Lob
P1000770
(16+12)
BP in 8,5
Einsteinschach
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]
play all play one stop play next play all
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. "
Joost de Heer: Bf1 and Sg1 should be swapped. (2002-09-15)
paul: Jacobi+ (2021-12-13)
comment
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...
13 - P1000946
Thierry Le Gleuher
v StrateGems 6 04-06/1999
Lob TT
P1000946
(15+15) C+
BP in 25,5
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
play all play one stop play next play all
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
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...
14 - P1000957
Thierry Le Gleuher
10c Messigny 2000
P1000957
(15+14) cooked
BP in 20,5
1. h4 e6 2. Th3 Ld6 3. Te3 Lg3 4. Te5 d6 5. e4 Ld7 6. Lc4 Lb5 7. Ld5 Lf1 8. d3 h6 9. Lg5 hxg5 10. c4 Th6 11. Sc3 Tf6 12. Db1 Tf3 13. Kd1 Te3 14. f4 Te2 15. f5 Tc2 16. Sce2 Tc3 17. f6 Tb3 18. axb3 c5 19. Ta6 Da5 20. b4 Kd8 21. bxa5
play all play one stop play next play all
Lange Wanderung des sTh8 nach b3. Der wBa muss überkreuz geschlagen haben, damit Weiß den wTa1 schnell genug nach a6 spielen kann.
Cook: 1. h4 e6 2. Th3 Ld6 3. Te3 Lg3 4. Te5 d6 5. e4 Ld7 6. Lc4 Lb5 7. Ld5 Lf1 8. d3 h6 9. Lg5 c5 10. Sc3 Dd7 11. Sce2 Sf6 12. Db1 Ke7 13. Kd1 Tc8 14. c4 Tc6 15. f4 Tb6 16. f5 Tb3 17. axb3 hxg5 18. Ta6 Da4 19. bxa4 Kd8 20. a5 Sg8 21. f6 (MC)
Michel Caillaud: cooked testing the last moves with Jacobi 0.7.5 and constraints for wBa cross-capture
(constraints Pa2-a3xb4xa5 or Pa2xb3-b4xa5 or Pa2xb3xa4-a5) :
9…c5 10.Cc3 Dd7 11.Cce2 Cf6 12.Db1 Re7 13.Rd1 Tc8 14.c4 Tc6 15.f4 Tb6 16.f5 Tb3 17.axb3 hxg5 18.Ta6 Da4 19.bxa4 Rd8 20.a5 Cg8 21.f6 (2020-10-17)
comment
Keywords: Unique Proof Game, Promenade
Genre: Retro
FEN: rn1k2n1/pp3pp1/R2ppP2/P1pBR1p1/2P1P2P/3P2b1/1P2N1P1/1Q1K1bN1
Input: Gerd Wilts, 2000-10-15
Last update: Gerd Wilts, 2022-12-17 more...
15 - P1000967
Thierry Le Gleuher
R008 Problem Paradise 14 09/1999
P1000967
(9+13)
shc#8
1. gxf3ep? Weiß hat keinen letzten Zug!

1. Le6 2. Tdf5 3. Lxa2 4. Lxb1 5. gxf3ep 6. Kf4 7. Kg4 8. Df4 h3#
play all play one stop play next play all
Henrik Juel: After 5.gxf3ep last move could be Ka2-a1 (2021-09-15)
comment
Keywords: En passant, Seriesmover, Consequent
Genre: Retro, Fairies
FEN: 8/8/p7/P2r1brp/pp2kPpb/p3q1p1/P1P1P1PP/KN6
Input: Gerd Wilts, 2000-10-15
Last update: James Malcom, 2021-09-14 more...
16 - P1004029
Thierry Le Gleuher
R0087 StrateGems 16 10-12/2001
P1004029
(12+16)
#1?
1. ... Sxc2#!

Beispielauflösung mri:
R: 1. Lg1-f2 Dd1-c1 2. Lf2-g1 Tg1-h1 3. Tc1-b1 Lh1-g2 4. Tb1-c1 Sg2-e1 5. Le1-f2 Dc1-d1 6. Lf2-e1 Td1-f1 7. Le1-f2 Tf1-g1 8. Lf2-e1 Se1-g2 9. Lg1-f2 Lg2-h1 10. Lf2-g1 Th1-f1 11. Lg1-f2 Lf1-g2 12. Lf2-g1 Tg1-h1 13. Lg2-h3 Kh3-h4 14. Lh1-g2 Sg2-e1 15. Le1-f2 Sh4-g2 16. Lf2-e1 Tg2-g1 17. Le1-f2 Lg1-h2 18. Lf2-e1 Kh2-h3 19. Le1-f2 Tf2-g2 20. Lg2-h1 Sf5-h4 21. Lh1-g2 Lh3-f1 22. Lg2-h1 Kh1-h2 23. Lf1-g2 Th2-f2 24. Lf2-e1 Lg2-h3 25. Le1-f2 Th8-h2 26. Lf2-e1 Kh2-h1 27. Le1-f2 Kh3-h2 28. Lf2-e1 Kh4-h3 29. Le1-f2 Lh2-g1 30. Lf2-e1 Lh3-g2 31. Lg2-f1 Th1-d1 32. Lf1-g2 Lg2-h3 33. Le1-f2 Lg1-h2 34. Lf2-e1 Kh3-h4 35. Le1-f2 Dd1-c1 36. Tc1-b1 Kh2-h3 37. Tb1-c1 Lf2-g1 38. Tc1-b1 Kg1-h2 39. Kb1-a1 Tb8-h8 40. Ka1-b1 Th8-h1 41. Tb1-c1 Lh1-g2 42. Lh3-f1 Kh2-g1 43. Tc1-b1 Lg1-f2 44. Lf2-e1 Df1-d1 45. Le1-f2 Df2-f1 46. Lf1-h3 Dg2-f2 47. Lf2-e1 Dh3-g2 48. Lg2-f1 Tg8-h8 49. Tf1-c1 Dh4-h3 50. Le1-f2 Dd8-h4 61. Lh3-g2 Lf2-g1 62. Tg1-f1 Lg2-h1 63. Kb1-a1 Lf1-g2 64. Ka1-b1 Kh1-h2 65. Tg2-g1 Kg1-h1 66. Th2-g2 Se7-f5 67. Lg2-h3 Sc6-e7 68. Th8-h2 Sb4-c6 69. h7-h8=T Th8-g8 70. h6-h7 Kh2-g1 71. h5-h6 Sa6-b4 72. h4-h5 Lg1-f2 73. h3-h4 h4xSg3 74. Sf5-g3 h5-h4 75. Sd4-f5 Lf2-g1 76. Sb5-d4 Lh4-f2 77. Sa3-b5 Le7-h4 78. Lh4-e1 h7-h5 79. Lf6-h4 Kg3-h2 80. Lc3-f6 Kh4-g3 81. Kb1-a1 Kh5-h4 82. g3-g4 g4xTf3 83. Lh1-g2 Lg2-f1 84. Tf1-f3 Kg6-h5 85. Td1-f1 Kf7-g6 86. Tf3-e3 Ke8-f7 87. e3-e4 g5-g4 88. Tf1-f3 Lb7-g2 89. f2-f4 f3xSe2 90. Lg2-h1 Lf8-e7 91. Th1-f1 Lc8-b7 92. Lf1-g2 b7-b6 93. Sg1-e2 Sb6-a8 94. e2-e3 e3xDd2 95. Kc1-b1 Ta8-b8 96. 0-0-0 Sb8-a6 97. Dd1-d2 Sd5-b6 98. Ld2-c3 Se7-d5 99. Lc1-d2 Sg8-e7 100. d2-d3 e4-e3 101. Sb1-a3 f4-f3 102. g2-g3 f5-f4 103. h2-h3 e5-e4 104. Sh3-g1 e7-e5 105. Sg1-h3 f7-f5 106. Sh3-g1 g7-g5 107. Sg1-h3
play all play one stop play next play all
Kees: .
-1.... Se1xc2# -2. Lg1-f2 Dd1-c1 -3. Lf2-g1 Tg1-h1 -4. Tc1-b1 Lh1-g2 -5. Tb1-c1 Tg1-g2 -6. Lg1-f2 Tf2-g2 -7. Tc1-b1 Pg2-e1 -8. Tb1-c1 Te1-f1 -9. Tc1-b1 Tf1-f2 -10. Tb1-c1 Dc1-d1 -11. Lf2-g1 Td1-e1 -12. Lg1-f2 Se1-g2 -13. Lf2-g1 Tg1-f1 -14. Lf1-h3 Tg2-g1 -15. Lg1-f2 Kh3-h4 -16. Lf2-g1 h4xSg3
This could be a solution, but black makes 4 captures exd, fxe, gxf, hxg, so white h-pawn must promote, so the solution failed. (2022-03-07)
Mario Richter: I do not know the intended solution, but the following plan works:
1. get bSe1 out of the Cage
2. get both black rooks out of the Cage
3. now there's enough space to get wRb1 out of the Cage - get it to h8 and unpromote it
4. bring back wPh7 to h3
5. retract bPh4xYg3 (e.g. bPh4xSg3), then everything resolves.
So in fact, Black can mate by 1. ... Se1xc2#! (2022-03-07)
Henrik Juel: But how do you get Se1 out of the cage, Mario? (2022-03-07)
Mario Richter: 1. get bSe1 out of the Cage
This requires a subplan:
1a. get bK to h3 (or lower)
1b. get bSe1 to g2
1c. step out by R: bSh4-g2 (2022-03-08)
A.Buchanan: Last pawn move / capture was 69 moves ago. Maybe Mario’s solution is not quite optimal but it would only be a couple of moves off. I suppose we can conclude that there was no draw claimed at any of the (69-50)x2 = 38 opportunities. On the other hand, if there was a way to retract to the last promotion in 50 moves, we would assume that this had happened because the 50 move rule would prevent anything longer? Is this how one would interpret these two cases? (2022-03-08)
Henrik Juel: Thanks Mario
A slightly different pla (2022-03-08)
Henrik Juel: ...
Andrew, I believe that Mario's solution is close to optimal, so it looks hopeless to quicken it to 50 moves
We have to assume that the 50 move is not in effect in this problem (2022-03-08)
Henrik Juel: ... should be '50 move rule', of course
My slightly different plan was to get wLh3 away early, but this would certainly not shorten the proof game significantly, if at all (2022-03-08)
A.Buchanan: Yes I was wondering how the conventions works in these two different situations. We basically want it to intervene only when convenient :) (2022-03-08)
Henrik Juel: I am afraid you are right, Andrew (2022-03-08)
A.Buchanan: Maybe the 50 move rule triggers unless we can prove that it didn't? Then we get the best of both worlds. And that's kind of the same template successfully used for castling & ep. (2022-03-09)
James Malcom: I think that it ought to not trigger unless you can prove it has. (2022-03-09)
A.Buchanan: In this problem we know that vast numbers of non-zeroing moves have passed. It’s a retro, so the 50 move convention would have terminated the game. The convention is bogus, but we can fix it a bit. Since under all histories the game would have terminated prior to the diagram position, the only answer is that the draw was never claimed. This might also “prove” that the move sequence was as short as possible, to reduce the number of missed claims.
It’s not clear from what James said whether he would agree with this, as he stated an opinion on the contrapositive case. And how could one "prove that the 50 move triggered" (i.e. that the game ended in a draw), without stating it as a fact in the stipulation? Even putting draw as the goal is arguably not enough. (2022-03-09)
Mario Richter: Would be interesting to know what Thierry really intended. Perhaps his idea was to fool the solver? (Letting him find a resolution similiar to mine, and therefore stating: "Yea,#1 is possible by 1. ... Sxc2#!", only to learn that the official solution says: "No, no #1 because of 50-moves-rule!")

btw., the unpromotion h7-h8=T can be done a little bit faster:
R: 1. Lg1-f2 Dd1-c1 2. Lf2-g1 Tg1-h1 3. Tc1-b1 Lh1-g2 4. Tb1-c1 Sg2-e1 5. Le1-f2 Dc1-d1 6. Lf2-e1 Td1-f1 7. Le1-f2 Tf1-g1 8. Lf2-e1 Se1-g2 9. Lg1-f2 Lg2-h1 10. Lf2-g1 Th1-f1 11. Lg1-f2 Lf1-g2 12. Lf2-g1 Tg1-h1 13. Lg2-h3 Kh3-h4 14. Lh1-g2 Sg2-e1 15. Le1-f2 Sh4-g2 16. Lf2-e1 Tg2-g1 17. Le1-f2 Lg1-h2 18. Lf2-e1 Kh2-h3 19. Le1-f2 Tf2-g2 20. Lg2-h1 Sf5-h4 21. Lh1-g2 Lh3-f1 22. Lg2-h1 Kh1-h2 23. Lf1-g2 Th2-f2 24. Lf2-e1 Lg2-h3 25. Le1-f2 Th8-h2 26. Lf2-e1 Kh2-h1 27. Le1-f2 Lh1-g2 28. Lh3-f1 Tb8-h8 29. Lf2-e1 Tf1-d1 30. Le1-f2 Tf2-f1 31. Lf1-h3 Dd1-c1 32. Tc1-b1 Tg2-f2 33. Kb1-a1 Lf2-g1 34. Ka1-b1 Kg1-h2 35. Kb1-a1 Th2-g2 36. Ka1-b1 Th8-h2 37. Lh3-f1 Tg8-h8 38. Kb1-a1 Kh2-g1 39. Ka1-b1 Lg1-f2 40. Lf2-e1 Lg2-h1 41. Kb1-a1 Lf1-g2 42. Lg2-h3 De1-d1 43. Lh1-g2 Lh3-f1 44. Td1-c1 Df1-e1 45. Le1-f2 Df2-f1 46. Tc1-d1 Lf1-h3 47. Td1-c1 Dg2-f2 48. Lf2-e1 Dh3-g2 49. Te1-d1 Lg2-f1 50. Tf1-e1 Dh6-h3 51. Le1-f2 Lh3-g2 52. Lg2-h1 Dc6-h6 53. Tf2-f1 Kh1-h2 54. Lf1-g2 Tf8-g8 55. Tg2-f2 Lf2-g1 56. Ka1-b1 Kg1-h1 57. Th2-g2 Lg2-h3 58. Th8-h2 Db7-c6 59. h7-h8=T

Anyone outthere who can squeeze out another 10 moves?! (2022-03-09)
Thomas Volet: I do not know what Thierry intended in this composition. However, it is the case that there are retro composers who are interested in long sequences of non-P non-capture moves without any interest in draw rules that might apply. Ceriani is an example. It is my belief that composers should be allowed to work with such sequences and perhaps even to share results with other composers and solvers, without constraints associated with draw rules. (2022-03-10)
A.Buchanan: I am aiming to reach a similar effect to Thomas of freeing composers and solvers. However rather than a confusing situation where contradictory interpretations of vague and poorly-worded conventions are randomly applied or ignored, I would like to express the underlying logic mathematically so we can all have our cake and eat it. Sometimes we want no 50M convention as we are looking for maximum length. Other times we do want 50M for dual elimination. We can have both. (2022-03-10)
A.Buchanan: Of course those like Thomas who as an escape from the rigours of work prefer to wander round in a swamp of vagueness are free to do so, there is no sense of “prohibition”/“allowing”. (2022-03-10)
Thomas Volet: Hopefully my colleagues can receive communication from the "swamp" to which I have been so publicly relegated. As to escaping from "the rigours of work", in the matter of sequences of non-P non-capture moves (the only subject of my comment above), I would have thought it clear that a substantial amount of work went into the composition of each of P0008399, P1202286, and P1331867. (2022-03-11)
A.Buchanan: Of course you're not "relegated", Thomas. These are great problems, but that's no excuse for discouraging others to form a clearer view of the underlying rules and conventions. You will always have your sarcasm to console you :-) (2022-03-11)
A.Buchanan: When I talk about "rigours of work", I mean your profession, not composing effort. You have explained to me before that the reason why you can't help yourself from discouraging others from sorting out the rules properly is that chess is an escape for you from an over-regulated real world. I can sympathize with that: you will always have that freedom. It's just such an unnecessary swamp you inhabit. As I have explained to you, I want to build a better foundation for newbies, programmers and fairy enthusiasts. This will enable more people to enjoy your compositions. Honestly, I don't know why you complain... :-) (2022-03-11)
more ...
comment

Genre: Retro
FEN: n7/p1pp4/1p6/8/4PPPk/3PRppB/PPPppBbb/KRq1nr1r
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2022-03-09 more...
17 - P1004145
Thierry Le Gleuher
R052 Problem Paradise 20 2002
P1004145
(5+9) cooked
shc#12
1. d5 2. d4 3. d3 4. d2 5. d1=L 6. Lb3 7. Lxa2 8. Lc4 9. Lf1 10. Lg2 11. Lh1 12. fxg3ep fxg3#
play all play one stop play next play all
Aber nach 11. Lh1 kann Weiß auch g2xLh3 zurücknehmen!
Cook: gxsLh3!
Henrik Juel: 1.d5-d4-d3-d2-d1B-b3xa2-c4-f1 10.Bg2-h1 12.fxg3ep+?? fxg3# seems to fail, because after 11.Bh1 last move could be g2xh3. So what is the solution? (2003-04-28)
Thierry LE GLEUHER: After 11.Bh1, the last move can't be g2xh3 because of the promoted Bishop h1 imcompatible with the bP structure! (2005-09-25)
Henrik Juel: Why couldn't Black have a promoted bishop at this point in time (where wPa2 and bPd7 are no longer present)? 12 captures by black pawns seem to match the 12 missing white men. (2005-09-26)
Joost de Heer: Besides, after g2-g4, the black bishop must've been promoted too. (2005-09-30)
James Malcom: Henrik, gxh3 is indeed impossible. The last move sequence must go something like 1. Kfg8 Se2+ 2. Kh2 Sg1. There cannot be a knight on h3, cutting off g8, or a queen/rook, cutting off h2. Thus, gxh3 has already been played and g2-g4 is the last move. (2021-09-14)
Mario Richter: Position after 11. Lh1 is 8/5p2/8/5ppp/5pPk/5p1P/5P1K/6nb.
It can be easily shown, that in this position g2xLh3! is indeed a legal retraction.
So the ep-capture is not justified and the problem is cooked!
(Perhaps Thierry forgot, that black pawn d7 "disappeared"? But Joost's argument raises [correctly] the question, why a promoted Bishop on h1 is ok for g2-g4, but not for g2xLh3.) (2021-09-15)
Henrik Juel: So the good guys (Mario, Joost, and me) win over the bad ones (Thierry and James) by 3-2... (2021-09-15)
Henrik Juel: or, less insultingly:
By a majority of 3 to 2 this problem has been deemed cooked (2021-09-15)
James Malcom: Make it 4 to 1: 1. Nc3 Nf6 2. Nd5 Rg8 3. Nxf6+ exf6 4. d4 Ke7 5. Bg5 fxg5 6. Nf3 Kf6 7. Ne5 Bd6 8. Nc6 Bg3 9. hxg3 bxc6 10. Rh4 gxh4 11. b4 Ba6 12. a4 Bd3 13. b5 Bf5 14. b6 h3 15. bxa7 h2 16. a5 Bh3 17. g4 Re8 18. a6 Re5 19. dxe5+ Kg5 20. Qd6 Qe7 21. c4 Qe6 22. Ra3 Qd5 23. cxd5 cxd5 24. Rf3 Nc6 25. e4 Re8 26. a8=Q Nd4 27. a7 cxd6 28. Qxe8 dxe4 29. Qe6 dxe6 30. a8=Q exf3 31. Bd3 Kh4 32. Bf5 exf5 33. Qa5 g5 34. Qd5 h5 35. Qe4 dxe5 36. Qf4 exf4 37. Kf1 h1=B 38. Kg1 Ne2+ 39. Kh2 Ng1 40. gxh3 (2021-09-16)
A.Buchanan: Is it also possible that in the critical position, the last moves were R: 1.gxSh3 exXf345 2.X~? I think I can fix the cook R: 1.gxLh3 nicely. (2021-09-17)
more ...
comment
Keywords: Seriesmover, Consequent, Excelsior, Promotion (l)
Genre: Retro, Fairies
FEN: 8/3p1p2/8/5ppp/5pPk/5p1P/P4P1K/6n1
Input: Gerd Wilts, 2002-07-27
Last update: A.Buchanan, 2021-09-17 more...
18 - P1007321
Thierry Le Gleuher
R196 Probleemblad 2 04/2003
P1007321
(6+16) C+
BP in 25,0
1. c4 Sf6 2. c5 Tg8 3. c6 Sxc6 4. g4 Se5 5. g5 c5 6. g6 Sxg6 7. h4 Sh8 8. h5 g6 9. h6 Lxh6 10. d4 Lxc1 11. b4 h6 12. b5 Sh7 13. b6 Dxb6 14. Sd2 Db1 15. a4 b5 16. a5 b4 17. a6 Lxa6 18. e3 Lxf1 19. f4 a5 20. f5 Ta6 21. f6 Txf6 22. e4 d6 23. e5 Kd7 24. e6+ Kxe6 25. d5+ Kxd5
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 1 Sekunde.
Keine Lösung: BP 24.0, BP 24.5. (2023-02-14)
comment
Keywords: Unique Proof Game, Tempo Loss (B1)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 6rn/4pp1n/3p1rpp/p1pk4/1p6/8/3N4/RqbQKbNR
Input: Gerd Wilts, 2003-04-27
Last update: Silvio Baier, 2023-03-02 more...
19 - P1011798
Thierry Le Gleuher
R210 Probleemblad 09-10/2003
Lob
PR Hans Gruber
P1011798
(14+13)
Letzte 42 Einzelzüge?
R: 1. ... 0-0-0+ 2. Kg7-h8 f7-f6 3. Kf6-g7 e4-e3 4. Kf5-f6 e5-e4 5. Ke4-f5 e6-e5 6. Kd3-e4 e7-e6 7. Te6-e2 e2-e1=L 8. Db2-a1 e3-e2 9. Ke2-d3 e4-e3 10. Dc1-b2 e5-e4 11. Dd1-c1 d6xLe5 12. Lb2-e5 c6-c5 13. Lc1-b2 c7-c6 14. b2-b4 b3xTa2 15. Ta1-a2 b4-b3 16. La2-b1 b5-b4 17. Lb3-a2 b6-b5 18. La4-b3 b7-b6 19. Lb5xBa4 a5-a4 20. Ke1-e2 a6-a5 21. Lf1-b5 a7-a6 22. e2xSf3 ...
play all play one stop play next play all
hans: all black pawn-moves
Henrik Juel: Commendation
(awarded by Hans Gruber, PB no.1 2005 p.4) (2019-03-07)
Joost de Heer: @Hans: First retraction move isn't a pawn move. (2024-02-01)
more ...
comment
Keywords: Last Moves?, Castling in the retro play
Genre: Retro
FEN: 2kr3K/3N3p/5p2/2p3p1/1P4P1/P3pPrb/p1PPRPPq/QB2b1bN
Reprints: H11-5 WCCI 2001-2004
Input: Gerd Wilts, 2003-10-20
Last update: Alfred Pfeiffer, 2019-03-08 more...
20 - P1012575
Thierry Le Gleuher
diagrammes 3/2000
P1012575
(12+16) C+
BP in 15,0
1. h4 d5 2. Th3 d4 3. Tc3 Dd5 4. Tc6 Dxa2 5. Sc3 Dxb2 6. Ta5 Da1 7. La3 g5 8. Ld6 g4 9. Lh2 g3 10. Db1 gxh2 11. Sd1 h1=D 12. Db5 Dh2 13. Df5 Dd6 14. Td5 Dd8 15. Td7 Dxd1
play all play one stop play next play all
No. 2608 HN
paul: Source: diagramme 133/2000 (2022-04-06)
comment
Keywords: Unique Proof Game, Interchange
Genre: Retro
Computer test: Natch 2.2 Copyright (C) 1997,98,99,2001,2002,2003 Pascal Wassong
FEN: rnbqkbnr/pppRpp1p/2R5/5Q2/3p3P/8/2PPPPP1/3qKBN1
Input: Henri Nouguier, 2004-01-11
Last update: Gerd Wilts, 2004-08-26 more...
21 - P1080434
Thierry Le Gleuher
R301 Probleemblad 01-02/2006
P1080434
(10+10) cooked
h#2
Duplex
hans: a) 1. Ke5 Td1 (0-0-0?) 2. f5 Lxg7# b) 1. 0-0-0! Dd8 2. Dxd1#
Some comment: The composer shows how important a tempo can be. Masterly accomplished! (HM). A very intensive study is needed to find the solutions: in fact not the solutions but the motivation. Has cost me days to solve this fine, extremely difficult and profound problem. In (a) 0-0-0 is not allowed., in (b) it is. In my opinion a 1st Prize Retros 2006 (GHB)

R: -1. … Dd8-b8 -2. a5-a6 Kf6-f5 -3. a4-a5 Ke7-f6 -4. a3-a4 Ke8-e7 -5. a2-a3 Lh2-g1 -6. h7-h8=L Ld6-h2 -7. h6-h7 Lf8-d6 -8. h5-h6 e7-e6 -9. h4-h5 Le6-c4 -10. h3-h4 Lc8-e6 -11. h2-h3 d7xDc6 -12. Dc5-c6 f5xSe4 -13. c6xb7 g6xTf5 -14. d5xTc6 etc.
bCap: axbxc2-c1, dxc6, hxg6xf5xe4, wCap: dxe3, gxf3xe4xd5xc6xb7, (2013-08-30)
hans: *2. Kc1-b1 (2013-08-30)
Mario Richter: I've found a cook for a), based on the idea to unpromote the black queen on c1 (shielded by the black bishop c4 on d1). The following PG shows, that the position can be reached with White still able to castle queenside:
1.Ng1-f3 a7-a6 2.Nb1-a3 a6-a5 3.Na3-c4 Ra8-a6 4.Rh1-g1 Ra6-f6 5.Nf3-h4 Rf6-f3 6.Nh4-g6 h7xg6 7.g2xf3 Ng8-f6 8.Bf1-h3 Nf6-e4 9.f3xe4 Nb8-c6 10.Bh3-f5 Nc6-b4 11.Rg1-g4 Nb4-d5 12.e4xd5 Rh8-h3 13.Rg4-e4 Rh3-c3 14.Nc4-e5 Rc3-c6 15.d5xc6 g6xf5 16.c6xb7 f5xe4 17.Ne5-c6 d7xc6 18.h2-h3 Qd8-d4 19.h3-h4 Qd4-e3 20.d2xe3 Bc8-e6 21.Bc1-d2 Be6-b3 22.Bd2-b4 a5xb4 23.Qd1-c1 e7-e6 24.Qc1-d1 Ke8-e7 25.Qd1-c1 Ke7-f6 26.Qc1-d1 Kf6-f5 27.Qd1-c1 Bf8-d6 28.Qc1-d1 Bd6-h2 29.c2-c3 Bh2-g1 30.Qd1-c1 Bb3-d1 31.Qc1-d2 b4-b3 32.Qd2-c2 b3xc2 33.h4-h5 c2-c1Q 34.h5-h6 Qc1-c2 35.h6-h7 Qc2-a4 36.h7-h8B Qa4-a8 37.a2-a3 Qa8-b8 38.a3-a4 Bd1-b3 39.a4-a5 Bb3-c4 40.a5-a6 (and now) Kf5-e5 43.0-0-0! (still possible!) f7-f5 44.Bh8xg7# (2013-08-31)
Henrik Juel: Nicely found, Mario.
So it was fortunate that the problem was not awarded in the tourney, despite the enthusiastic solver comments (2013-08-31)
Henrik Juel: According to judge Bernd Gräfrath, he did not see the cook and awarded the problem 1st-2nd prize (2013-09-01)
A.Buchanan: Was Thierry made aware of the cook? Did this ever get fixed? (2021-06-29)
comment
Keywords: Cant Castler (wl)
Genre: Retro, h#
FEN: 1q5B/1Pp2pp1/P1p1p3/5k2/2b1p3/2P1P3/1P2PP2/R3K1b1
Reprints: H5 Vkontakte 2013
H5 Phénix 261/262, p. 10347, 05-06/2016
Input: Gerd Wilts, 2009-01-06
Last update: Rainer Staudte, 2019-08-11 more...
22 - P1183600
Thierry Le Gleuher
diagrammes 167 2008
P1183600
(16+14) C+
BP in 20
1. Sf3 f5 2. Se5 f4 3. Sxd7 f3 4. Sb6 Dd5 5. Sxa8 Kd7 6. Sc3 Kc6 7. Se4 Kb5 8. Sg5 Ka4 9. Sh3 b5 10. Sg1 Lh3 11. Tb1 e6 12. Ta1 Lc5 13. Tb1 Lb6 14. Ta1 c5 15. Sc7 Se7 16. Se8 Tf8 17. Sd6 Tf5 18. Sc4 Th5 19. Sa3 g5 20. Sb1 Sg6
play all play one stop play next play all
paul: H27, Album FIDE 2007-09 (2022-04-06)
more ...
comment
Keywords: Unique Proof Game, Homebase (W), Pendulum (T x4), Interchange (SS), Initial Game Array (W)
Genre: Retro
Computer test: Euclide 0.93, ©2000-2002 Étienne Dupuis
FEN: 1n6/p6p/1b2p1n1/1ppq2pr/k7/5p1b/PPPPPPPP/RNBQKBNR
Input: Gerd Wilts, 2010-12-30
Last update: James Malcom, 2023-05-02 more...
23 - P1186643
Thierry Le Gleuher
34 Problemaz 1 04/2007
P1186643
(14+15)
BP in 10,0 (remis)
1. Sf3 Sc6 2. Se5 Sxe5 3. h3 Sg4 4. Th2 Sxh2 5. a3 Sg4 6. hxg4 h6 7. Sc3 Sf6 8. Sb1 Sg8 9. Sc3 Sf6 10. Sb1 Sg8= draw by 3Rep
play all play one stop play next play all
Henrik Juel: The Draw (by repetition) is part of the stipulation
Without it, there would be cooks, e.g.
1.Sg1-f3 Sb8-a6 2.Sf3-g1 Sa6-b4 3.Sg1-f3 Sb4-d5
4.Sf3-g1 Sd5-e3 5.Bh2-h3 Se3-g4 6.Th1-h2 Sg4xh2
7.Sg1-f3 Sh2-g4 8.Sf3-h2 Sg4xh2 9.Ba2-a3 Sh2-g4
10.Bh3xg4 Bh7-h6
and short solutions, e.g.
1.Sg1-f3 Sb8-a6 2.Sf3-d4 Sa6-c5 3.Sd4-b3 Sc5xb3
4.Sb1-a3 Sb3-d4 5.Ta1-b1 Sd4-f5 6.Tb1-a1 Sf5-g3
7.Sa3-b1 Sg3xh1 8.Ba2-a3 Sh1-g3 9.Bh2xg3 Bh7-h6
10.Bg3-g4 (2018-12-25)
Henrik Juel: The shortest solution (without Draw) is unique
1.Sg1-f3 Sb8-c6 2.Sf3-e5 Sc6xe5 3.Bh2-h3 Se5-g4
4.Th1-h2 Sg4xh2 5.Ba2-a3 Sh2-g4 6.Bh3xg4 Bh7-h6
and identical to the first 6.0 moves of the intended solution
Why could the subsequent triple repetition not be achieved by rook moves?
Probably because the position after 7.Ta2 Tb8 8.Ta1 Ta8 is not considered to be a repeated position, as the castling rights have changed (2018-12-25)
A.Buchanan: Yes that's exactly it Henrik: the surviving rooks are nailed to their start squares (2021-06-05)
comment
Keywords: Unique Proof Game, Draw by repetition, Constrained problem, Castling
Genre: Retro
FEN: r1bqkbnr/ppppppp1/7p/8/6P1/P7/1PPPPPP1/RNBQKB2
Input: Gerd Wilts, 2011-02-05
Last update: Arnold Beine, 2021-06-05 more...
24 - P1186866
Thierry Le Gleuher
T10 Phénix 173/174, p. 7566, 05-06/2008
nach Gerd Wilts
P1186866
(9+9)
Wer ist am Zug?
R: 1. ... f4xLg3 2. Lh4-g3 f5-f4 3. Lf6-h4 h3-h2 4. Lb2-f6 h4-h3 5. Lc1-b2 h5-h4 6. b2xLa3 Lc5-a3 7. e3-e4 Ld4-c5 8. c5-c6 Lf6-d4 9. c4-c5 Le7-f6 10. c3-c4 Lf8-e7 11. c2-c3 e7xTd6 12. Td4-d6 Kd8-c8 13. d6xTc7
play all play one stop play next play all
Henrik Juel: White has the move
-1... f4xLg3 -2.Lh4 f5 -3.Lf6 h3 -4.Lb2 h4 -5.Lc1 h5 -6.b2xLa3 Lc5 -7.e3 Ld4 -8.c5 Lf6 -9.c4 Le7 -10.c3 Lf8 -11.c2 e7xTd6 -12.Td4 Kd8 -13.d6xTc7, retract Td4 to h1, Ka8 via g6 to e1, Pd6 to h2, g3-g2, g2xLf3 etc. (2013-08-28)
James Malcom: Is the given retraction unique? (2020-11-08)
Henrik Juel: Unique up to 11.c2-c3, I think (2020-11-08)
Henrik Juel: One of my favorite retros with just kings and pawns
even though the retroplay is not completely unique (so my previous comment is imprecise)
R: 2... h3-h2 3.Lf6-h4 h4-h3 or 3... f5-f4 also work
but not R: 1.e3-e4? or 1.c5-c6?, and White runs out of pawn retractions
nor 2. e3-e4? or 2. c5-c6? f5-f4 3. Le5-g3, and same difficulty (2020-11-09)
Henrik Juel: In the forward play we have several temporal implications, e.g.,
e2-e3 before b7xLa6 before g2xLf3 before g3-g2 before h2xg3
d6xc7 before e7xd6 before b2xLa3 before f4xLg3
Thierry was inspired by P0008574 (2020-11-09)
James Malcom: I see the similarities as well. If Thierry's last 21 moves, stopping at 11. c2-c3 of course, are indeed unique, it seems to be the record for a kindergarten position? (2020-11-09)
A.Buchanan: I think the last 2 single moves are determined. Prior to that it could be f5-f4 or h3-h2, no? (2020-11-10)
Henrik Juel: You are right, Andrew
So, no record, James (2020-11-10)
James Malcom: Ah well then-the linked problem with 16 moves by Gerd oughtta be it then, from what I've searched so far. (2020-11-10)
A.Buchanan: Isn’t the retro record one of the Breyer versions by Thierry Le Gleuher? (2020-11-10)
James Malcom: As far as I know, the TOTAL retro record is, all from P1339006, by Theierry indeed: Type A, 100 moves, Type B, 101 with bP6-h6 & White to move, and, finally Type C, 102 with bP6-h6 and wSc7-a8. (2020-11-10)
James Malcom: For Type B, I meant "bPh5-h6." (2020-11-10)
comment
Keywords: Whose move?, Kindergarten Problem
Genre: Retro
FEN: K1k5/p1Pp2p1/p1Pp4/8/P3P3/P4Pp1/3P1Ppp/8
Input: Gerd Wilts, 2011-02-06
Last update: James Malcom, 2020-11-08 more...
25 - P1186876
Thierry Le Gleuher
www.ajedrez.com.ar 07/2007
1. Preis Jorge J. Lois 60
P1186876
(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 play one stop play next 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...
26 - P1227636
Thierry Le Gleuher
5A) Economy Records in Add Unit(s) Problems , p. 7, 12/03/2011
P1227636
(15+8)
Add the missing unit(s)
b) +sBa3,sBb3,sBc3,sBd3,sBe3 R: 1. Sh3-g1 a4-a3 2. Dh1-d1 a5-a4 3. Tg1-b1 a6-a5 4. Lb7-a8 a7-a6 5. Lc8-b7 b4-b3 6. Kb1-a1 b5-b4 7. Kc1-b1 b6-b5 8. Kd1-c1 b7-b6 9. Ke1-d1 c4-c3 10. Kf1-e1 c5-c4 11. Kg2-f1 c6-c5 12. Ta1-g1 c7-c6 13. Dd1-h1 d4-d3 14. Kf1-g2 d5-d4 15. Ke1-f1 d6-d5 16. Sg1-h3 e4-e3 17. Lh3-c8 e5-e4 18. Lf1-h3 e6-e5 19. g2xDf3 Kg4-h5 20. Sf5-h6+
play all play one stop play next play all
WBc1 taken home, so no BP captured or promoted and it's impossible to retract WPe6xf7.
The only way to open the cage is to reorder white homebase and retract WPg2xf3, this takes 19 retro moves. Add all remaining BPs on third rank, and we can't retract both BPs on b7 and d7 to let the BBg8 get home, and we can't either retract BP to e7 since the BPg must retract to g7 in order to allow uncapture of dark squared BB by WPf7.
Record of the highest number of units to add so that a position becomes legal (Type A, number of units not specified, no promoted pieces).
See http://abrobecker.free.fr/chess/addunits.pdf (2011-12-22)
Alain Brobecker: See P1227635 for a version with promoted pieces. (2011-12-22)
Henrik Juel: Add five black pawns on a3,b3,c3,d3,e3 to provide the 18 tempo retractions needed.
-1.Sh3 a4 -2.Dh1 a5 -3.Tg1 a6 -4.Lb7 a7 -5.Lc8 b4 -6.Kb1 b5 -7.Kc1 b6 -8.Kd1 b7 -9.Ke1 c4 -10.Kf1 c5 -11.Kg2 c6 -12.Ta1 c7 -13.Dd1 d4 -14.Kf1 d5 -15.Ke1 d6 -16.Sg1 e4 -17.Lh3 e5 -18.Lf1 e6 -19.g2xDf3 Kg4 -20.Sf5 etc. (2011-12-22)
James Malcom: What formatting is required to add the five black pawns to the board with the solution? I know I have seen it done before somewhere. (2022-01-30)
A.Buchanan: You define another pieces list labelled e.g. b, then include that in the solution before you start moving pieces. Check out some other add pieces problems to see how it’s done. (2022-01-31)
James Malcom: Thanks! I have it figured out now. (2022-01-31)
comment
Keywords: Type A, Add pieces, Economy record
Genre: Retro
FEN: B5bn/5PrR/5prN/6pk/7p/5P2/PPPPPP2/KR1Q2N1
Input: Alain Brobecker, 2011-12-22
Last update: A.Buchanan, 2023-04-13 more...
27 - P1240724
Thierry Le Gleuher
2456 Orbit 40 10/2008
P1240724
(11+15) C+
BP in 23,5
1. a4 b5 2. axb5 c6 3. Ta6 Da5 4. h4 Da1 5. Sa3 Dxc1 6. Sh3 Da1 7. Db1 Dxa3 8. Da2 Dxh3 9. De6 Dxh1 10. Dh6 e6 11. Kd1 Se7 12. Kc1 Sg6 13. Kb1 Dxf1+ 14. Ka2 Da1+ 15. Kb3 Da4+ 16. Kc3 La3 17. Kd3 d6 18. Ke3 Sd7 19. Kf3 Sf8 20. Kg3 Ld7 21. Kh2 0-0-0 22. Kg1 Te8 23. Kf1 Te7 24. Ke1
play all play one stop play next play all
Henrik Juel: Natch 3.1 did not find the solution in half an hour
Stopped at pos. 349 (2018-12-27)
more ...
comment
Keywords: Unique Proof Game, Pure Round Trip (K)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.11 168:37:47 Stunden. (hhh:mm:ss) Keine Lösung: BP 22.5, BP 23.0 in ca. 73 Stunden.
FEN: 2k2n1r/p2brppp/R1ppp1nQ/1P6/q6P/b7/1PPPPPP1/4K3
Input: Gerd Wilts, 2012-06-04
Last update: A.Buchanan, 2023-04-15 more...
28 - P1305230
Thierry Le Gleuher
1 RIFACE 2015
P1305230
(11+1)
Ajouter des pièces.
+wSb2d2 +wLc4
R: 1. Dd1-c2+ Kc2-c3 etc
play all play one stop play next play all
A.Buchanan: How about wLa1 instead? (2020-10-06)
Henrik Juel: Yes, that would improve the economy slightly (2020-10-06)
Ladislav Packa: wBa1 is illegal... (2020-10-07)
A.Buchanan: Hi Ladislav why is wLa1 illegal, please? That was essentially my question before (2020-10-07)
Mario Richter: wLa1 instead of wDa1 is of course legal too: one of the dark-squared wBishops unpromotes on h8, one wQueen on g8. Black pawns g7+h7 let the wPawns g2+h2 pass by cross-capturing the 2 original wRooks. (2020-10-07)
more ...
comment
Keywords: Add pieces
Genre: Retro
FEN: 8/P7/P7/P1Q5/P3K3/P1k5/P1Q5/Q3B3
Input: A.Buchanan, 2015-07-08
Last update: A.Buchanan, 2023-04-13 more...
29 - P1331867
Thomas Volet
Thierry Le Gleuher

16620 Die Schwalbe 277, p. 388, 02/2016
Henrik Juel gewidmet
P1331867
(14+14)
Gab es nach dem letzten Schlagfall einen Bauernzug?
Auflösung ohne Zuschlagen der 50-Züge-Regel (Mario Richter, PDB 15.03.2022):
R: 1. ... Da3-c1 2. Tb2-b1 Dc5-a3 3. Lb1-a2 Dd4-c5 4. Ta2-b2 De5-d4 5. Ta3-a2 Dg5-e5 6. La2-b1 De5-g5 7. Tb1-e1 Kf1-g2 8. Tb2-b1 Le4-h1 9. Kg8-f8 Kg2-f1 10. Tb1-b2 Db2-e5 11. Th1-b1 Dc1-b2 12. Kh8-g8 Dg1-c1 13. Lb8-a7 Kf1-g2 14. Lb1-a2 Ke1-f1 15. Ta2-a3 Df1-g1 16. Tg1-h1 Ta7-b7 17. Tg6-g1 Ta6-a7 18. Tb2-a2 Dh1-f1 19. La2-b1 Kf1-e1 20. Th6-g6 Kg2-f1 21. Tb1-b2 Dc1-h1 22. Th5-h6 Db2-c1 23. Th1-b1 Dc1-b2 24. Th6-h5 Dg1-c1 25. La7-b8 Kf1-g2 26. Th5-h6 Ke1-f1 27. Th6-h5 Kd1-e1 28. Th5-h6 Kc1-d1 29. Th6-h5 Kb2-c1 30. Th5-h6 Ka3-b2 31. Th6-h5 Kb4-a3 32. Th5-h6 Kb5-b4 33. Th6-h5 Kc6-b5 34. Th5-h6 Kb7-c6 35. Th6-h5 Kc8-b7 36. Th5-h6 Kd8-c8 37. Th6-h5 Ke8-d8 38. Th5-h6 Kf8-e8 39. Th6-h5 Te8-e7 40. Th5-h6 Tb8-e8 41. Th6-h5 Tb7-b8 42. Th4-h6 Ke7-f8 43. Kg8-h8 Kd6-e7 44. Kf8-g8 Kc5-d6 45. Ke7-f8 Tb8-b7 46. Th6-h4 Th8-b8 47. Lb8-a7 Ta7-a6 48. Tg6-h6 Tb7-a7 49. La7-b8 Tb8-b7 50. Th6-g6 Tg8-b8 51. Kd8xLe7
und weiter z.B.
51. ... Lf8-e7 52. Kc8-d8 Kd5-c5 53. Kb7-c8 Dg5-g1 54. Ka6-b7 Le7-f8 55. Kb5-a6 Tb8-g8 56. Kb4-b5 Kd6-d5 57. Kc3-b4 Lf8-e7 58. Tg6-h6 Dd8-g5 59. Tg1-g6 Ke7-d6 60. Tb1-g1 Lb7-e4 61. Kb2-c3 Lc8-b7 62. Kc1-b2 b7-b6 63. Ld4-a7 Ke8-e7 64. Kd1-c1 b5xDa4 65. Da3-a4 a6xSb5 66. Dc1-a3 a7-a6 67. Ke1-d1 Sb6-a8 68. Dd1-c1 Sd5-b6 69. Lb2-d4 Se7-d5 70. Lc1-b2 Sg8-e7 71. b2-b3 Ta8-b8 72. Ld5-a2 Sh6-g8 73. Lg2-d5 Sg8-h6 74. Lf1-g2 Sh6-g8 75. g2xSh3 Sf4-h3 76. Sb3-a1 Sd5-f4 77. Ta1-b1 Sb4-d5 78. Sd4-b3 Sa6-b4 79. Sc3-b5 Sb8-a6 80. Sf3-d4 Sg8-h6 81. Sg1-f3 Sh6-g8 82. Sb1-c3 Sg8-h6 83. a4-a5 e7-e6 84. a2-a4

AL R: 1. Tb2-b1 Dd1-c1 2. Lb1-a2 Dc1-d1 3. Ta2-b2 Dd1-c1 4. Ta3-a2 Dc1-d1 5. La2-b1 Db2-c1 6. Tb1-e1 Dc1-b2 7. Kg8-f8 Kg1-g2 8. Kf8-g8 Ld5-h1 9. Kg8-f8 Kg2-g1 10. Kf8-g8 Db2-c1 11. Th1-b1 Dc1-b2 12. Kg8-f8 Dg1-c1 13. Kf8-g8 Kf1-g2 14. Lb1-a2 Ke1-f1 15. Ta2-a3 Df1-g1 16. Lb8-a7 Ta7-b7 17. Tg1-h1 Ta6-a7 18. Tg6-g1 Dg1-f1 19. Tb2-a2 Kf1-e1 20. Th6-g6 Kg2-f1 21. La2-b1 Dc1-g1 22. Tb1-b2 Db2-c1 23. Th1-b1 Dc1-b2 24. Kg8-f8 Dg1-c1 25. Kf8-g8 Kf1-g2 26. Kg8-f8 Ke1-f1 27. Kf8-g8 Kd1-e1 28. Kg8-f8 Kc1-d1 29. Kf8-g8 Kb2-c1 30. Kg8-f8 Ka3-b2 31. Kf8-g8 Kb4-a3 32. Kg8-f8 Kb5-b4 33. Kf8-g8 Kc6-b5 34. Kg8-f8 Kb7-c6 35. Kf8-g8 Kc8-b7 36. Kg8-f8 Kd8-c8 37. Kh8-g8 Ke8-d8 38. Lb1-a2 Kf8-e8 39. La2-b1 Te8-e7 40. La7-b8 Tb8-e8 41. Lb1-a2 Tb7-b8 42. La2-b1 Ke7-f8 43. Kg8-h8 Kd6-e7 44. Kf8-g8 Kc5-d6 45. Ke7-f8 Tb8-b7 46. Lb1-a2 Th8-b8 47. Lb8-a7 Ta7-a6 48. La2-b1 Tb7-a7 49. La7-b8 Tb8-b7 50. Lb1-a2 Tg8-b8 51. Kd8xLe7
und die Diagrammposition ist wegen der 50-Züge-Regel remis.
play all play one stop play next play all
Die Antwort auf die Frage aus der Forderung lautet: Nein! mach dem letzten Schlagzug erfolgte kein Bauernzug mehr.

Löser Martin Hintz (https://thbrand.de/downloads/Hintz_Schwalbe_277_Loesungen.pdf)
"Ich möchte hervorheben, dass die 50-Züge-Regel für die Beantwortung der eigentlichen Aufgabenstellung keine Rolle spielt. Die Lösung wäre die gleiche, wenn es die 50-Züge-Regel nicht gäbe. Anders als es in vergleichbaren Aufgaben bereits dargestellt wurde, wird der Schlag des sL nicht aus dem Grund benötigt, um ein Remis infolge der 50-Züge-Regel zu vermeiden, sondern vielmehr aus dem Grund, dass sonst auf f8 ein Schachschutz fehlt. Die 50-Züge-Regel bildet damit "lediglich" eine zusätzliche Schwierigkeit, der man sich bei der Konstruktion einer konkreten Beweispartie gegenübersieht."
Korrektur zu 16238 aus Heft 271 (Februar 2015) [Pxxxxxxx]

Autor Tom Volet: "I believe this to be the first published example of a 50 move draw sequence in which the move that immediately precedes the sequence must have been (not could have been), applying only the rules of forward chess without regard to problem conventions or stipulations as to forward play, a capture of a unit by a unit."
Kees: . from PAS

1. Na3 Na6 2. Nb5 Nc5 3. Nd4 Ne6 4. Nb3 Ng5 5. Rb1 Nh3 6. Na1 Nf6 7. gxh3 Nd5 8. Bg2 Nb6 9. Bd5 Rb8 10. a4 Na8 11. Ba2 a6 12. b3 Rg8 13. Ba3 Rh8 14. Bc5 Rg8 15. Ba7 b6 16. Nf3 Bb7 17. Nd4 Bf3 18. Nb5 axb5 19. Qc1 Qc8 20. Qa3 Qb7 21. a5 Qc6 22. Qa4 Kd8 23. Kd1 Kc8 24. Kc1 Kb7 25. Kb2 Re8 26. Rbg1 Kc8 27. Ka3 Kd8 28. Kb4 Qh6 29. Rg6 bxa4 30. Kb5 Rh8 31. Ka6 Bg4 32. Kb7 Bf3+ 33. Rc6 Qg5 34. Kb8 Qg1 35. Rh6 e6 36. Rg6 Bd6 37. Rh6 Reg8 38. Rg6 Bf8 39. Rh6 Ke7 40. Kc8 Kd6 41. Kd8 Kc5 42. Rg6 Be7+ 43. Kxe7 Rb8 44. Rh6 Rb7 45. Bb8 Ra7 46. Rg6 Ra6 47. Ba7 Rb8 48. Rh6 Rb7 49. Kf8 Kd6 50. Kg8 Ke7 51. Kh8 Kf8 52. Rg6 Rb8 53. Rh6 Re8 54. Rg6 Re7 55. Rh6 Ke8 56. Rg6 Kd8 57. Rh6 Kc8 58. Rg6 Kb7 59. Rh6 Kc6 60. Rg6 Kb5 61. Rh6 Kb4 62. Rg6 Ka3 63. Rh6 Kb2 64. Rg6 Kc1 65. Rh6 Kd1 66. Rg6 Ke1 67. Rh6 Kf1 68. Bb8 Kg2 69. Kg8 Qb1 70. Kf8 Qb2 71. Rb1 Qf6 72. Rb2 Kf1 73. Bb1 Ke1 74. Ra2 Kd1 75. Ra3 Kc1 76. Rg6 Kb2 77. Rg1 Qg6 78. Rh1 Qg1 79. Ba7 Kc1 80. Bb8 Kd1 81. Ba7 Ke1 82. Bb8 Kf1 83. Ba7 Kg2 84. Bb8 Qc1 85. Ba2 Qb2 86. Rb1 Qc1 87. Rb2 Kf1 88. Rb1 Bh1 89. Rb2 Kg2 90. Rb1 Qb2 91. Re1 Qc1 92. Bb1 Qd1 93. Ra2 {50 moves rule} Qc1 94. Rb2 Qd1 95. Ba2 Ra7 96. Rb1 Rb7 97. Ba7 Qc1 (2022-03-14)
Thomas Volet: Apologies to Thierry. I should have addressed this earlier. My remark quoted above was (if recollection serves) made along with the submission of the composition for publication. Regardless, my belief at at the time was incorrect as I was then unaware of Nikita Plaksin's mirror compositions P0004364 and P0004395 (published in 1969). Both show the retroplay sequence ending (just short of the draw that the prevailing convention dictated, which saves the stipulated Mate in 3) in the uncapture by a King of a Bishop on the Bishop's home square, from which the Bishop never moved (exit Pawns occupying their home squares in the diagrams). The above 2016 joint composition with Thierry shows the 50 move retroplay sequence of non-Pawn, non-capturing moves being immediately followed by the uncapture by a King of a non-Pawn unit that has moved from its home square. That feature, which presents some additional constraints on realization, may also have been presented before, but obviously I should leave that to better historians. (2022-07-27)
comment
Keywords: 50 move rule
Genre: Retro
FEN: n4K2/Brpprppp/1p2p3/P7/p7/1P5P/B1PPPPkP/NRq1R2b
Input: A.Buchanan, 2017-02-25
Last update: Mario Richter, 2022-03-15 more...
30 - P1347210
Pascal Wassong
Thierry Le Gleuher
Axel Gilbert

RIFACE 2017
2nd Prize
P1347210
(16+16) C+
KBP in 16,5
Weißer Längstzüger
Weißer Ohneschlag
1. Sf3 Sc6 2. Sd4 Se5 3. Sc6 a6 4. Sb8 c6 5. Sa3 Db6 6. Sc4 Db3 7. Sa5 Sc4 8. a4 Db5 9. Sb3 g5 10. Sc5 Lg7 11. Se4 Le5 12. Sc3 Lc7 13. Sb1 d6 14. Sd7 Sf6 15. Se5 0-0 16. Sf3 Kh8 17. Sg1
play all play one stop play next play all
Joost de Heer: Solution: 1.Sf3 Sc6 2.Sd4 Se5 3.Sc6 a6 4.Sb8 c6 5.Sa3 Qb6 6.Sc4 Qb3 7.Sa5 Sc4 8.a4 Qb5 9.Sb3 g5 10.Sc5 Bg7 11.Se4 Be5 12.Sc3 Bc7 13.Sb1 d6 14.Sd7 Sf6 15.Se5 O-O 16.Sf3 Kh8 17.Sg1 (2021-01-04)
comment
Keywords: Unique Proof Game, No-capture chess (w), Maximummer (w), RIFACE Retro Composition Tourney (2017)
Genre: Retro, Fairies
FEN: r1b2r1k/1pb1pp1p/p1pp1n2/1q4p1/P1n5/8/1PPPPPPP/RNBQKBNR
Reprints: Phénix 279-280, p. 10966, 11-12/2017
Input: A.Buchanan, 2018-02-24
Last update: Gerd Wilts, 2021-01-04 more...
31 - P1347479
Pascal Wassong
Axel Gilbert
Thierry Le Gleuher
Michel Caillaud

7952 Phénix 277, p. 10888, 09/2017
P1347479
(16+16) C+
BP in 15,0
Längstzüger
Schwarzer Ohneschlag
1. e4 Sa6 2. Lc4 Sc5 3. Ld5 Sa4 4. c4 Sb6 5. Da4 Sh6 6. Dc6 Sf5 7. a4 Sd4 8. Sa3 Sb3 9. Tb1 Sa5 10. b3 h5 11. Le6 Sd5 12. Lb2 Sf6 13. Dd5 Sg8 14. Lf6 Sc6 15. e5 Sb8
play all play one stop play next play all
Joost de Heer: Solution: 1.e4 Sa6 2.Bc4 Sc5 3.Bd5 Sa4 4.c4 Sb6 5.Qa4 Sh6 6.Qc6 Sf5 7.a4 Sd4 8.Sa3 Sb3 9.Rb1 Sa5 10.b3 h5 11.Be6 Sd5 12.Bb2 Sf6 13.Qd5 Sg8 14.Bf6 Sc6 15.e5 Sb8 (2021-01-04)
Adrian Storisteanu: "Ohneschlag" is an unnecessary condition for a 16+16 position!? (2021-09-19)
Adrian Storisteanu: (Ah, OK, sorry, it prevents unwanted maximummer alternative moves...) (2021-09-19)
comment
Keywords: Unique Proof Game, Maximummer, No-capture chess (s)
Genre: Retro, Fairies
FEN: rnbqkbnr/ppppppp1/4BB2/3QP2p/P1P5/NP6/3P1PPP/1R2K1NR
Input: A.Buchanan, 2018-03-03
Last update: Gerd Wilts, 2021-01-04 more...
32 - P1380666
Thierry Le Gleuher
Pascal Wassong
Jacques Dupin

RIFACE 2016
2nd honourable mention
P1380666
(14+15) C+
BP in 8.0
vertikaler Zylinder
Henrik Juel: C+ Jacobi 0.7.5
1.Sf3 b5 2.Sh4 Bf3 3.gxf3 b4 4.Bc6 dxc6 5.h3 Qd6 6.Rh2 Qxh2 7.Sg2 Qd6 8.O-O-O-O Qd8
Looks like kingside castling, but is loong castling with [Ra1] (2020-10-05)
comment
Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016)
Genre: Retro, Fairies
Computer test: C+ Jacobi v0.7.5 & no shorter solution -0.5,-1.0,-1.5
FEN: rn1qkbnr/p1p1pppp/2p5/8/1p6/5P1P/PPPPPPN1/1NBQ1RK1
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-10 more...
33 - P1380667
Thierry Le Gleuher
RIFACE 2016
3rd honourable mention
P1380667
(15+13) C+
BP in 9.0
vertikaler Zylindre
1. Sc3 g5 2. Sd5 g4 3. Sxe7 g3 4. Sxg8 gxf2+ 5. Kxf2 h5 6. Kg3 Th6 7. Kh3 Te6 8. Sh6 Te7 9. Ka3 Te3#
play all play one stop play next play all
Henrik Juel: C+ Jacobi 0.7.5
Cylinder-specific mate with triple-check (2020-10-05)
comment
Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016)
Genre: Retro, Fairies
Computer test: C+ Jacobi v0.7.5 & no shorter solution -0.5,-1.0,-1.5 (AB)
FEN: rnbqkb2/pppp1p2/7N/7p/8/K3r3/PPPPP1PP/R1BQ1BNR
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-10 more...
34 - P1382408
Thierry Le Gleuher
Gunter Jordan
Raúl Jordan
Roberto Osorio

15 feenschach 237, p. 224, 09-10/2019
P1382408
(12+11) C+
BP in 9.5
1. d4 a5 2. d5 a4 3. d6 a3 4. dxc7 axb2 5. cxb8=D bxc1=D 6. Dxc8 Dg5 7. Dc4 Dxg2 8. Dxf7+ Kxf7 9. Lxg2 Ke8 10. Lf1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
A.Buchanan: Can anyone send me the full results of this JT please? I have an unpublished one which is similar in theme, and I want to confirm that I’m not anticipated. I will load all problems into PDB if they’re not already here (2020-11-26)
comment
Keywords: Unique Proof Game, Homebase (2), Prentos Theme (Dd), Switchback (Lk), Ceriani-Frolkin Theme (Dd)
Genre: Retro
FEN: r2qkbnr/1p1pp1pp/8/8/8/8/P1P1PP1P/RN1QKBNR
Input: Gunter Jordan, 2020-11-25
Last update: A.Buchanan, 2021-02-20 more...
35 - P1386611
Silvio Baier
Thierry Le Gleuher
Bernd Graefrath
Roberto Osorio
Gregor Werner

98 feenschach 237, p. 232, 09-10/2019
P1386611
(12+11) C+
BP in 9.0
1. f4 a5 2. f5 a4 3. f6 a3 4. fxg7 axb2 5. gxf8=L bxa1=D 6. Lxe7 Df6 7. Lxd8 Dxf1+ 8. Kxf1 Kxd8 9. Ke1 Ke8
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.

In der Originalquelle f 237 stand eine falsche Lösung. Die hier angegebene Lösung ist richtig.
A.Buchanan: Under-promotion & excelsior are meaningless for PGs (2021-02-19)
comment
Keywords: Unique Proof Game, Ceriani-Frolkin Theme (Ld), Homebase (2), Prentos Theme (Ld), Switchback (Kk), Promotion (Ld)
Genre: Retro
FEN: rnb1k1nr/1ppp1p1p/8/8/8/8/P1PPP1PP/1NBQK1NR
Input: Gunter Jordan, 2021-02-18
Last update: A.Buchanan, 2021-02-19 more...
36 - P1387696
Silvio Baier
Thierry Le Gleuher
Bernd Graefrath
Ralf Krätschmer
Roberto Osorio

131 feenschach 237, p. 235, 09-10/2019
P1387696
(11+11) C+
BP in 10.0
1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 hxg2 5. exd8=L gxh1=S 6. Lxc7 Sxg3 7. Le5 Sxe2 8. Lxg7 Sxc1 9. Dxc1 Lxg7 10. Dd1 Lf8
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
Henrik Juel: tiny typo: 6... Sg3, not Sxg3
correcting this should enable the animation (2021-03-22)
comment
Keywords: Unique Proof Game, Homebase (2), Prentos Theme (Ls), Switchback (Dl), Promotion (Ls)
Genre: Retro
FEN: rnb1kbnr/pp1p1p2/8/8/8/8/PPPP3P/RN1QKBN1
Input: Gunter Jordan, 2021-03-22
Last update: A.Buchanan, 2021-04-06 more...
37 - P1388682
Thierry Le Gleuher
Gunter Jordan
Raúl Jordan
Ralf Krätschmer
Roberto Osorio

155 feenschach 237, p. 238, 09-10/2019
P1388682
(12+11) C+
BP in 9.0
1. g4 b5 2. g5 b4 3. g6 b3 4. gxh7 bxc2 5. hxg8=S cxb1=D 6. Sxe7 Dg6 7. Sxc8 Dxg1 8. Txg1 Dxc8 9. Th1 Dd8
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Homebase (2), Prentos Theme (Sd), Switchback (Td), Promotion (Sd), Prenix (S), Ceriani-Frolkin Theme (Sd), Future Proof Game (Prentos+Sback)
Genre: Retro
FEN: rn1qkb1r/p1pp1pp1/8/8/8/8/PP1PPP1P/R1BQKB1R
Input: Gunter Jordan, 2021-04-16
Last update: A.Buchanan, 2021-04-17 more...
38 - P1389155
Silvio Baier
Thierry Le Gleuher
Ralf Krätschmer
Roberto Osorio

169 feenschach 237, p. 239, 09-10/2019
P1389155
(11+10) C+
BP in 9.5
1. b4 f5 2. b5 f4 3. b6 f3 4. bxa7 fxg2 5. axb8=S gxh1=T 6. Sxd7 Txh2 7. Sxf8 Txf2 8. Sxh7 Txh7 9. Kxf2 Th8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 03:05:53 Stunden. (hh:mm:ss)
Keine Lösung: BP 9.0. (2023-07-23)
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (St), Switchback (Kt), under-promotion (St)
Genre: Retro
Computer test: Stelvio 1.4
FEN: r1bqk1nr/1pp1p1p1/8/8/8/8/P1PPP3/RNBQKBN1
Input: Gunter Jordan, 2021-05-01
Last update: Silvio Baier, 2023-08-15 more...
39 - P1389187
Thierry Le Gleuher
Ralf Krätschmer
Roberto Osorio

170 feenschach 237, p. 239, 09-10/2019
P1389187
(11+11) C+
BP in 9.5
1. b4 g5 2. b5 g4 3. b6 g3 4. bxa7 gxh2 5. axb8=S hxg1=T 6. Sc6 Txg2 7. Sxd8 Txf2 8. Sxb7 Lxb7 9. Kxf2 Lc8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 04:00:17 Stunden. (hh:mm:ss)
Keine Lösung: BP 9.0. (2023-07-23)
comment
Keywords: Unique Proof Game, Homebase (2), Prentos Theme (St), Switchback (Kl), under-promotion (St), Ceriani-Frolkin Theme (St), Prenix (S), Future Proof Game (Prentos+Sback)
Genre: Retro
Computer test: Stelvio 1.4
FEN: r1b1kbnr/2pppp1p/8/8/8/8/P1PPP3/RNBQKB1R
Input: Gunter Jordan, 2021-05-02
Last update: Silvio Baier, 2023-08-15 more...
40 - P1389374
Silvio Baier
Thierry Le Gleuher
Gunter Jordan
Raúl Jordan
Ralf Krätschmer
Roberto Osorio

175 feenschach 237, p. 240, 09-10/2019
P1389374
(11+11) C+
BP in 9.5
1. b4 f5 2. b5 f4 3. b6 f3 4. bxc7 fxg2 5. cxd8=S gxf1=L 6. Se6 Lxe2 7. Sxf8 Lxd1 8. Sxh7 Txh7 9. Kxd1 Th8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Kt), under-promotion (Sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 02:01:02 Stunden.(hh:mm:ss) Keine Lösung: BP 9.0.
FEN: rnb1k1nr/pp1pp1p1/8/8/8/8/P1PP1P1P/RNB1K1NR
Input: Gunter Jordan, 2021-05-07
Last update: A.Buchanan, 2023-07-29 more...
41 - P1389383
Thierry Le Gleuher
Gunter Jordan
Raúl Jordan
Roberto Osorio

176 feenschach 237, p. 240, 09-10/2019
P1389383
(11+11) C+
BP in 9.5
1. f4 h5 2. f5 h4 3. f6 h3 4. fxg7 hxg2 5. gxf8=S gxf1=L 6. Se6 Lxe2 7. Sxd8 Lxd1 8. Sxb7 Lxb7 9. Kxd1 Lc8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Kl), under-promotion (Sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 04:29:10 Stunden.(hh:mm:ss) Keine Lösung: BP 9.0.
FEN: rnb1k1nr/p1pppp2/8/8/8/8/PPPP3P/RNB1K1NR
Input: Gunter Jordan, 2021-05-08
Last update: A.Buchanan, 2023-07-29 more...
42 - P1389414
Silvio Baier
Thierry Le Gleuher

177 feenschach 237, p. 240, 09-10/2019
P1389414
(11+11) C+
BP in 11.0
1. h4 g5 2. hxg5 h5 3. g6 h4 4. g7 h3 5. gxf8=S hxg2 6. Se6 gxf1=L 7. Sxd8 Lxe2 8. Sc6 Lxd1 9. Kxd1 Sa6 10. Ke1 Tb8 11. Sxb8 Sxb8
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Ks), under-promotion (Sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 in 147:48:36 Stunden. (hh:mm:ss) Keine Lösung: BP 10.5 in 39:42:33 Stunden.
FEN: 1nb1k1nr/pppppp2/8/8/8/8/PPPP1P2/RNB1K1NR
Input: Gunter Jordan, 2021-05-09
Last update: A.Buchanan, 2023-08-08 more...
43 - P1389442
Silvio Baier
Thierry Le Gleuher

178 feenschach 237, p. 240, 09-10/2019
P1389442
(12+12) C+
BP in 9.5
1. g4 f5 2. g5 f4 3. g6 f3 4. gxh7 fxe2 5. hxg8=S exf1=L 6. Sh6 Ld3 7. Sf7 Lxc2 8. Sxd8 Kxd8 9. Dxc2 Ke8 10. Dd1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 in 00:04:33 Minuten. (hh:mm:ss)
Keine Lösung: BP 9.0. (2023-07-22)
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Dk), under-promotion (Sl)
Genre: Retro
Computer test: Stelvio 1.4
FEN: rnb1kb1r/ppppp1p1/8/8/8/8/PP1P1P1P/RNBQK1NR
Input: Gunter Jordan, 2021-05-10
Last update: Silvio Baier, 2023-08-15 more...
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