1818 problem(s) found in 1862 milliseconds (displaying 100 problem(s)).

1 - P0000003
Nikita M. Plaksin
(4) Die Schwalbe 97 02/1986
Spezialpreis
P0000003
(12+14)
#1
Der letzte B-Zug war g7-g5
1. e3 Sxc3# (1. Ke1??)
play all play one stop play next play all
Mario Richter: The position can be reached from the initial game array in less than 50 moves, with bPg7 playing Pg7-g6-g5, so something must be completely wrong here. (2009-4-23)
Mario Richter: As D.Baibikov informed me, I misinterpreted the stipulation: "Der letzte B-Zug war g7-g5" is part of the stipulation, so the position should be analyzed under the assumption, that the last pawn move in the game leading to the diagram was Pg7-g5. This makes my earlier comment of course obsolete ... (2010-4-25)
hans: 1. Sxc3#/Sa3#/Sd2#/Sg3# (not fxg1Q/R# for g7-g5 is last B-move.)
R: 1. d4xRe5 Bh6-g7 2. Bg7-f8 Re6-e5 (R to b8, Q to d8, K to e8, B to f8)Wb makes tempomoves, and after g7-g5 can Black retract the other pawns. (2010-4-26)
A.Buchanan: Smallest used probid number in PDB. All the early numbers are retros, because that's where Gerd's interest initially lay, I guess. (2017-10-5)
Henrik Juel: Hans's retroplay does not work, because last pawn move was g7-g5, not d4xTe5, and his forward play argument is invalid
White captured [Lc6] and dxTe
Black captured [Lf1], a7xb6, hxLg, and g3xf2
White has no last move, so he has the move; but he cannot mate, so the stipulation must refer to Black, who mates with fxg1=DT, Sg3, or bS~, depending on what White plays
The retroplay is something like
-1... Lh6 -2.Lg7, retract Kg8 via a7 and f5 to d1, Sa3-b1, Ta1 out, Kd1 to h7, Ta1 to b8, Dc5 to d8, Kh7 to e8, Lf8-h6, and g7-g5 is just in time, if my counting is correct
The En passant Keyword makes little sense; White could capture hxg6ep, but did not (2017-10-5)
Henrik Juel: tiny typo: Black captured hxg, not hxLg (2017-10-6)
A.Buchanan: I agree with your count :D (2017-10-6)
comment
Keywords: 50 move rule, Conditional problem
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-10-6 more...
2 - P0000078
Leonid M. Borodatow
Evgeny V. Kharichev

5949 Die Schwalbe 106 08/1987
P0000078
(13+10)
#3
b) sBd3 nach d4
Yoav Ben-Zvi: Intended solution in a is 1.R-e4+ but cooked by 1.Rxb7 because castling is met by R-g4#.
Correction: Place WRs on c3 and c4, move BRa1 to c1.
Solution: a) 1.Rxc7? 0-0! 1.R-e4+! K-f8 2.N-d6 b) 1.Rxc7! (threat 2.R-c8#) 0-0?
To see if Black castling rights can be preserved assume BK and BRh8 never moved. [BRa8] could not escape the back row so BRc1 is promoted on g1 by [BPf7] after capturing the third missing White piece on g2. One of WBa2, WBh2 is promoted since the first of [WBc1], [WBf1] to be released requires that the other is prevented from reaching a2 or h2 by the advance of [WPb2] or [WPg2]. The promotion to WB by [WPa2] could not be on e8 or g8 (requires move by BK) so it was on d8 or f8, the promoted bishop moving from there to h2. The path of [WPa2] to promotion requires capture of all 5 missing Black pieces, other than [BBc8], including [BRa8] so the last capture by White must be WPe7xBRd8=B ([BBc8] captured earlier by WN). The position when this capture and promotion was played has WP on g2 (waiting for arrival of promoted bishop to h2) which means [WBf1] was locked at home which means WP stood on b2 (waiting for arrival of [WBf1] to a2) and [WBc1] was also locked at home. With the original WBs both locked at home White's central cage is locked so the White king and queen are also locked at home and [WRh1] is locked in its corner cage. All Black missing pieces have been captured, BKe8 and BRh8 both stand at home (under the assumption) and [BPe7] must have advanced to e6 to vacate e7 for the promoting WP. At this point Black has only pawn moves to make until the promotion to rook while White must get the promoted bishop to h2 to allow the advance of [WPg2] to g3. Starting from 3rk2r/ppppPppp/4p2N/2R5/8/4N2P/1PPPPPP1/2BQKB1R play continues 1.WPe7xRd8=B Pe6-e5 2.Bd8-h4 Pf7-f6 3.Bh4-g3 Pf6-f5 4.Bg3-h2 Pf5-f4 5.Pg2-g3 Pf4-f3 6.Ne3-g2 Pf3xNg2 7.Nh6-f7 Pg2-g1=R 8.xx Rg1-g2 9.Bh2-g1 Rg2-h2 10.Bf1-g2 Pe5-e4! 11.Bg2-f3 Rh2-g2 and from here WBf3 continues to a2 followed by WPb2-b3 releasing WBc1 to be captured on h6, WQd1 to be captured on d3, WKe1 to move to f6 and the rooks c5,h1 and g2 to take their place on c3,c4 and c1. This works for the diagram position (so Black retains the right to castle) but not for b (since BP ends up on d3). (2017-10-5)
A.Buchanan: @Yoav: my proof is *almost* identical to yours. I felt I needed experiment to justify that wQ didn't have enough time to develop to g2 & it could only be wN captured there. Therefore beP & bgP had not captured anything until the cage opened on queenside.
For setting up the pieces for the forward play, I prefer wRa3 instead of c3, because b) has no non-trivial dual. (2017-10-5)
A.Buchanan: with wTc4a3 sTc1h8:
a) 1. Te4+ Kf8 2. Txa7 ~ 3. Ta8#
b) 1. Txa7 droht 2. Ta8# 1. ... d5 (d6) 2. Txc7 ~ 3. Ta8# (2017-10-6)
Yoav Ben-Zvi: The difficulty in refuting the capture of WQ on g2 arises when the Solution is visualized by the standard technique of long range retraction. By doing a "Fast retraction/rewind" to the critical position (when White plays his last capture) and then looking forward it is easily seen that White needs to get a piece very quickly to g2 while WQ is locked at d1 so a WN stands on e3 or h4 ready to move to g2 (after it is vacated by WP) in 1 move.
The suggested transfer of WRc3 to a3 results not only in the elimination of duals but also in new thematic content. In b, there is now reciprocal change, betwen Try and Solution, of the key (1.Rxc7?, 1.Rxa7!) and the second move continuation (1...P-d6/d5 2.Rxa7, 1...Pd6/d5 2.Rxc7). In a, Rxa7 is the second move continuation in the Solution and the key of a Try refuted by 1...BP-d6/d5! (not 1...0-0? 2.R-g4#) 2.Rxc7 0-0!.
This is not enough for an independent modern #3 but it is impressive for one in which the Solution is justified by extensive Retro-Analysis. (2017-10-10)
comment
Keywords: Castling (sk), Cant Castler (sk)
Genre: Retro, 3#
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2017-10-6 more...
3 - P0000136
Dmitro W. Pronkin
Andrey Frolkin

6631v Die Schwalbe 117 06/1989
Preis
P0000136
(14+14)
BP in 57,5
1. a4 h5 2. a5 h4 3. a6 h3 4. axb7 hxg2 5. h4 d5 6. h5 d4 7. h6 d3 8. h7 dxc2 9. d4 a5 10. Lh6 c1=T 11. e4 Tc5 12. Se2 Th5 13. e5 c5 14. e6 Sc6 15. b8=T a4 16. Tb4 a3 17. Ta4 c4 18. b4 c3 19. b5 c2 20. b6 c1=T 21. b7 Tc4 22. b8=T Da5+ 23. Tbb4 Lb7 24. S1c3 0-0-0 25. exf7 e5 26. Tc1 Lc5 27. f8=T a2 28. Tf3 a1=T 29. Sa2 g1=T 30. Tfa3 Tg6 31. f4 Te6 32. f5 g5 33. f6 g4 34. f7 g3 35. f8=T g2 36. Tf5 g1=T 37. Lf8 Tg7 38. Sg3 e4 39. Ld3 e3 40. 0-0 e2 41. Tcc3 e1=T 42. Lc2 T1e3 43. d5 Tdd7 44. d6 Tdf7 45. d7+ Kb8 46. Dd6+ Ka8 47. Dc7 Sge7 48. d8=T+ Sc8 49. Tdd3 Thg8 50. h8=T Tae1 51. Th6 T1e2 52. T1f2 Tce4 53. Kf1 Ld4 54. Tfc5 Se5 55. Sf5 Sc4 56. Sd6 Sb2 57. Tbc4 Sb6 58. Db8+
play all play one stop play next play all
Der absolute KBP-Längenrekord.
See P1338946 cooked.
paul: Compare with P0002278 & P0002279 (2010-4-30)
Mu-Tsun Tsai: This one is by far the toughest retro I've ever solved. Very little certain information can be determined by structural consideration alone, even with long and complicated argument. It took me five days to complete solving this. (2012-7-22)
A.Buchanan: @Mu-Tsun: that's an interesting data point - thanks for posting. (2017-9-7)
Henrik Juel: The current record is 58.5 moves in a proof game problem by the authors + Keym, Die Schwalbe 2017 (2017-9-7)
Henrik Juel: I just learned that the 58.5 move proof game has been cooked... (2017-9-7)
more ...
comment
Keywords: Unique Proof Game, Length Record, Non-standard material (TTTTTTtttttt), Castling, Superseded by (P1338946), Aristocrat
Genre: Retro
Reprints: 584 Ukrainisches Album 1986-1990
86 Shortest Proof Games 11/1991
(6) diagrammes 103 10-12/1992
H18 FIDE Album 1989-1991 1997
feenschach 137, p. 368, 08-09/2000
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-9-19 more...
4 - P0000324
Josef Haas
8259 Die Schwalbe 143 10/1993
P0000324
(7+5)
a) Wer setzt in 1 Zug matt?
b) Auf welchem Feld muß ein schwarzer Bauer eingefügt werden, damit die andere Partei als in a) mattsetzt?
b) (+sBc7) 1. ... Lg8xe6#
a) 1. Tg6#
1) R: 1. ... Kg6xBf6! 2. g5xf6ep++ f7-f5 3. La2-b1+
play all play one stop play next play all
"Vermutlich aus der Kleinkunstkiste des Autors hervorgekramt.
a) sollte einfach formuliert sein: 'Matt in 1 Zug' - denn wie es hier heißt, klingt es als ob nur einer mattsetzen kann. Das aber ist nicht der Fall, denn beide können's: 1. ... Lxe6# und 1. Tg6#. Üblicherweise hat Weiß das Prae und kann darauf pochen, den Schwarz hat einen altklassischen letzten Zug: 1. ... Kg6xBf6! (nebst 2. Bg5xBf6ep++ Bf7-f5 3. La2-(x)b1)" (HHS);
also ist Weiß am Zug und setzt matt mit 1. Tg6#.
b) Nach Einfügen eines sBc7 geht die o.g. Rückzugfolge nicht, weil der wK nicht auf die 8. Reihe gelangen kann. Also Schwarz am Zuge und 1. ... Lxe6#
"Allzubekanntes - kein Problem für Schwalbelöser" (HHS)
Wenn das alles so bekannt ist, erstaunt doch sehr, daß nur drei Löser die Autorintention nachvollziehen konnten. Alle anderen Löser (5) kamen zu genau entgegengesetzten Erkenntnissen (in a) setzt Schwarz matt, in b) Weiß), was wohl durch die nicht ganz konventionelle Formulierung suggeriert wurde. Ich find's ein interessantes Beispiel für Massenhypnose! (GL) 2/I/3L.
Brassaud: La solution proposée 1/Tg6# est possible
Mais il y a aussi le rétro jeu -1) Fa2-b1, Rg5g6 -2) Ta4-a5+, Rf4-f5 etc … et avec le trait aux noirs : 1) Fxe6 # est possible (2017-8-30)
A.Buchanan: @Brassaud: yes I agree. There is no reason why White should not have moved last. So both players can mate, but part (b) implies that the intended solution in (a) is 1 player. If the published stipulation for (a) was maybe just "#1", which by default is white to move, then there is a unique solution.
For (b) I am wondering about +sBg6, which would also stop the en passant trick, both by blocking sK from retreating there and also by locking sL in an impossible cage with sBf7. (2017-8-31)
Henrik Juel: Adding a black pawn on g6 of course prevents a black last move by Kf6, but it allows f7xg6 as last move; Lg8 is not locked, because Ph7 is white (2017-8-31)
A.Buchanan: Yes (2017-8-31)
more ...
comment
Keywords: Add pieces, No legal last move for Black
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-4 more...
5 - P0000547
Tivadar Kardos
Werner Frangen

3462 Die Schwalbe 68 04/1981
P0000547
(14+9) C+
BP in 8,5
1. Sc3 d5 2. Sxd5 Sc6 3. Sxe7 Sd4 4. Sxg8 De7 5. Sxe7 Sxe2 6. Sxc8 Sxg1 7. Sb6 Ke7 8. Sxa8 b6 9. Txg1
play all play one stop play next play all
Sally: Parforce-Tour des w. Springers, verführungsreich, aber nicht so schwierig und im Lösungsverlauf so phantasievoll, wie manch anders Stück. (2017-9-6)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Natch 2.1 Copyright (C) 1997,98,99,2001,2002 Pascal Wassong
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-11-13 more...
6 - P0000555
Leonid M. Borodatow
3531v Die Schwalbe 69 06/1981
P0000555
(5+9) cooked
Letzter Zug?
R: 1. Bh7xDg8=L
play all play one stop play next play all
Cook: R: 1. Ke4xDd5
Brassaud: Autre possibilité : rétro 1/ Ca6xDb8 ou Ca6xTb8 etc.. (2017-8-31)
comment
Keywords: Last Move? (BxD=L), Type A, Promotion (L), Non-standard material, Superseded by (P0000618)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2015-12-3 more...
7 - P0000577
Tivadar Kardos
3742 Die Schwalbe 72 12/1981
P0000577
(8+12)
BP in 11,5
1. d4 e5 2. Lg5 Dxg5 3. Sf3 Dxg2 4. Sxe5 Dxh1 5. Sxd7 Dd5 6. Sxf8 Dxa2 7. Sg6 Dxa1 8. Sxh8 Da6 9. Sg6 Dxg6 10. Dd3 Dxd3 11. e3 Dxf1+ 12. Kd2
play all play one stop play next play all
paul: C+ pour les premiers dix coups (Popeye). (2011-9-17)
Sally: Die Reihenfolge der Züge ist festgelegt, aber eine bestimmte Thematik wird nicht gezeigt. Dieser Sachverhalt scheint sehr zur Schwierigkeut der Aufgabe beigetragen zu haben. Es gab nur 2 Löser! (2017-9-6)
comment
Keywords: Unique Proof Game
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-27 more...
8 - P0000715
Leonid M. Borodatow
2814 Die Schwalbe 57 06/1979
P0000715
(11+5)
Welcher Stein wurde zuletzt auf f8 geschlagen?
siehe Neufassung 2814v!
Brassaud: Rétro jeu : 1) Tf6f8+, Rf7xCg8 2) Tb6f6+, Rf8f7 3) Fb2g7+, Rf7f8 4) g7g8=C+, Rg8f7+ 5) g6g7, Rf8g8 6) b5xa6, Rg8f8 6) Re7d8, a7a6 7) Rf6e7 etc ..
Les pions noirs de e7, f7, g7 et h7 ont été promus après 3 prises de pièces blanches. Les pions blancs ont pris 10 pièces noires, le Fou de c8 a été pris en c8. Il n’y a pas eu de prise en f8, mais un Cavalier blanc (de promotion) été pris en g8 (2017-8-31)
comment

Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2002-10-12 more...
9 - P0000723
Reto List
Markus Ott

2870 Die Schwalbe 58 08/1979
P0000723
(12+10)
#2
1. 0-0-0? illegal
1. Kd2! ... 2. Tg1#

R: 1. ... Kh3xSg2 2. Sh4xLg2+ Lf1-g2
play all play one stop play next play all
Mit W am Zug zuletzt nur R: 1. ... Kh3xSg2 2. Sh4xLg2+ Lf1-g2 möglich. In der resultierenden Stellung haben die wBB am K-Flügel viermal geschlagen, hinzu kommt der sLf8, der von einem weißen Offizier eliminiert wurde. Damit sind alle fehlenden sSteine erklärt, die wBBa2+c2 haben ihre PAS-Linie nie verlassen und konnten auch nicht umwandeln, standen als Bauernschlagobjekte also nicht zur Verfügung. sBh7 schlug auf g6 den wLf1. Der weißfeldrige sUW-L kann also nur durch schlaglose UW des sBd7 auf d1 entstanden sein (für die UW auf b1 fehlt ein Schlagobjekt!), die w0-0-0 ist damit unmöglich.
Brassaud: Les blancs ont pris 5 fois (D,T,T,C, et pion de d7). Le FN f8 n’est pas sorti. Il n’y a pas de pièce noire à rendre pour dénouer la position du roi noir.
Avec le trait au blanc le rétro jeu possible serait : 1) …, Rh3xCg2 2) Ch4g2+ et il y a un rétro pat noir. 1) o-o puis 2) Tg1# ne va pas.
Si j’ai bien compris il s’agit de « No legal last move for Black »
Le trait est aux noirs.
Le rétro jeu est : 1) Th4h7, Rh3g2 2) Tg4h4+, Rg2h3 etc .. Le o-o blanc est possible.
0) .., RxCh1 1) Re2+, Rg2 2) Tg1 #
mais sur 0) …, Fxb5 il n’y a pas de mat en 2 coups (2017-9-1)
Henrik Juel: I believe this is the intention:
-1... Kh3xSg2 -2.Sh4xLg2 etc.
Now White has captured [Lf8], d2xe3, e2xf3, hxgxf
And Black has captured h7xLg6 and [Pa2,Pc2] on their files
[Pa2] must have been captured by an officer, so [Pd7] has promoted on d1 without capturing; hence Ke1 has moved, so White may not castle
1.Kd2 any 2.Tg1# (2017-9-1)
comment
Keywords: Castling (wg), Cant Castler (wg), under-promotion (l)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2017-9-2 more...
10 - P0000736
Tivadar Kardos
2935 Die Schwalbe 59 10/1979
P0000736
(10+14) C+
BP in 7,0
1. Sc3 Sf6 2. Se4 Sxe4 3. g3 Sxg3 4. Sf3 Sxh1 5. Se5 Sxf2 6. Sxd7 Sxd1 7. Sxb8 Txb8
play all play one stop play next play all
Sally: Eine eindeutige Zugfolge, was bei solchen Aufgaben nicht oft zutrifft. Nicht ganz leicht. Der Rekord steht bei 41,5 Zügen.
(BS). (2017-9-6)
Henrik Juel: 41.5 moves is a very old record
The current record length for proof games is 58.5 moves in a problem by Pronkin, Frolkin & Keym, problem C, p.7 in Die Schwalbe, heft 283, February 2017
The former record was 57.5 moves in a problem by Pronkin & Frolkin, Die Schwalbe, 1989 (V) (2017-9-6)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: (Natch 2.2Beta1 Copyright (C) 1997,98,99,2001,2002,2003 Pascal Wassong)
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-11-13 more...
11 - P0000739
Nikita M. Plaksin
Alexandr A. Klibanski

2981 Die Schwalbe 60 12/1979
P0000739
(15+11)
#2
1. ... Txc5 dxc5 etc
1. ... Txd4 Txd4 etc
1. ... fxe3 Lxe3 etc
1. ... fxg3ep De6 etc
R: 1. g2-g4 f5-f4 2. Dg3-h3 f6-f5 3. Dg8xBg3 f7-f6 4. Da8-g8 g4-g3 5. a7-a8=D g5-g4 6. a6-a7 g6-g5 7. a5-a6 g7-g6 8. a4-a5 a5xDb4 9. Da3-b4+ etc
play all play one stop play next play all
Henrik Juel: Black has the move. 0... Rxc5/Rxd4/fxe3 1.dxc5/Rxd4/Bxe3 etc. -1.g2 f5 -2.Qg3 f6 -3.Qg8:P f7 -4.Qa8 g4 -5.Q=a7 g5 -6.a6 g6 -7.a5 g7 -8.a4 a5:Q -9.Qa3 etc. (2003-12-10)
Brassaud: et pour justifier le mot-clé : 0)...f4xg3ep 1)De6 etc. (2017-9-4)
A.Buchanan: Very original problem: with lots of forward and backward play. A minor retro transposition is possible (Black's 3rd & 4th moves), and there is a dual in one line after e.p., but I really like this. (2017-9-4)
comment
Keywords: En passant, No legal last move for Black, Phoenix
Genre: Retro, 2#
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-5 more...
12 - P0000781
Josef Haas
1467 Die Schwalbe 31 02/1975
F. Schützhold gewidmet
1. Lob
P0000781
(11+6)
Weiß nimmt 1 Zug zurück, dann #1
R: 1. Tg8xSh8, dann 1. cxb6ep#
play all play one stop play next play all
Brassaud: 1) cxb6ep # est correct. Le coup blanc à retirer peut être 1) TxCh8, mais également 1) Th8 ou encore un coup de pion vers e5 ou g6 Avec le rétro jeu -1)…, b7 b5 -2) Cf2, f2xg1=T etc .. (2017-9-10)
Henrik Juel: I believe that the retraction must be -1.Tg8xSh8
otherwise Ka7 might have made the last move (2017-9-10)
A.Buchanan: Yes I remember writing about this many years ago here: https://www.janko.at/Retros/Glossary/EnPassant.htm. It all depends on exact capture-counting to refute the possibility that wR is the third promoted rook in the diagram. (2017-9-11)
comment
Keywords: Help retractor, En passant
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-9-11 more...
13 - P0000783
Luis Alberto Garaza
1469 Die Schwalbe 31 02/1975
P0000783
(13+15)
Wer ist am Zug?
hans: Black to move
R:-1.Th8-h7 Sc7-e8 -2.Th7-h8 Sa6-c7 -3.Th8-h7 Sb8-a6 -4.Th7-h8 Sd7-b8 -5.Tg7-h7 Sf8-d7 -6.Tg5-g7 Sh7-f8 -7.Tg7-g5 Sg5-h7 -8.Th7-g7 a4-a3! -9.Th8-h7 Kg7-f6 -10.Se3-f5+ etc. (2012-5-17)
Brassaud: Trait noir avec le rétro-jeu suivant :
-1) Th8-h7, Cc7-e8 -2) Th7-h8, Rg7-f6 -3) Th8-h7+, Rf8-g7 4) Th7-h8, Ca6-c7 5) Th8-h7, Cb8-a6 6) Th7-h8, Cd7-b8 7) Th8-h7, Df6-e5 8) Ce3-f5, Ce5-d7+ 9) Ff5-g4, Re8-f8 10) Rg4-h5, Cd7-e5+ etc …
Trait blanc possible :
-1) …, h4-h3 -2) Th8-h7,Cc7-e8 etc .. avec le rétro-jeu précédent. (2017-9-10)
Henrik Juel: -2... Kg7?? exposes the king to an illegal double check (2017-9-10)
Yoav Ben-Zvi: Try White-to-move? R: -1...BNc7-e8 -2.Rg7-h7 Na6-c7 -3.Rh7-g7 Nb8-a6 -4.Rg7-h7 Nd7-b8 -5.Rh7-g7 Nf8-d7 -6.Rg7-h7 (not Rh8-h7 Nh7-f8 -7.??) Nh7-f8 -7.Rg5-g7 Pa4-a3 -8.Rg7-g5 Ng5-h7 -9.Rh7-g7 ?? This shows first a Retro-opposition by BN on h7 which either smothers the WR (if it stands on h8) or forces it to retract to g5 (from g7) creating a second Retro-opposition that forces Black to use his only tempo retraction (a4-a3) prematurely. The solution shows Retro-unpin of WNf5 by BN retracting to g5. (2017-9-11)
comment
Keywords: Non-standard material, Whose move?
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-9-11 more...
14 - P0000803
Gerd Rinder
1646 Die Schwalbe 35 10/1975
P0000803
(8+10)
Remis
VL: Patt unless the PRA-logic is applied (the Buridan ass-like collision)!

Nachdruck: The Problemist, v.19, No.6, 11/2003. (2008-10-15)
A.Buchanan: This is designed to be Retro Strategy, although the subsequent convention changes which set PRA to be the default would cook it. (2017-10-21)
comment
Keywords: En passant, Retro Strategy
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-10-21 more...
15 - P0000872
Josef Kutscher
497 Die Schwalbe 10 08/1971
P0000872
(12+12)
legal?
b) Ergänze die sD, so daß die Stellung legal ist!
Brassaud: Ajouter une dame noire en b1, seule case possible, et la position devient légale
Rétro jeu
1) Re5-f5+, e4xd3 ep+ 2) d2-d4, b2-b1 =D+ etc ..
Excellente présentation du thème : Ergänze Steine (2017-9-19)
Henrik Juel: a)
The position is legal, with this retroplay
-1.Ke5xSf5 e4xPd4ep -2.d2 Sd4 etc.
b)
After addition of sD, Ke5xSf5 is illegal because all white captures were now made by pawns, but as Brassaud mentions, adding sD on b1 allows
-1.Ke5 e4xPd4ep -2.d2 D=b2 etc. (2017-9-19)
comment
Keywords: Add pieces
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-10-25 more...
16 - P0001162
Luigi Ceriani
36 Europe Echecs 24 08/1960
P0001162
(11+15) cooked
Löse die Stellung auf!
Brassaud: Les pions noirs en b3-b5 et c4 ont fait 3 prises, le Fou blanc a été pris en f1 et un pion blanc pris colonne h. Intention de l’auteur : rétro jeu 1) d4xDe5+, Dg3 2) d3, Te6 3) d2, Te4 4) Th4, Tg4e4+ 5) Th5, h7 6) Th4, Ta4 7) Th5, Ta1 8)Th4, Tc1 9) Th5, Tc3 10) Th4, Te3 11) Th5, Te6 12) Th4, Tg6 13) Th6, Te6 14) Tg6, b4 15) Tg8, Th6 16) Tf8 Tg6xh6 17) Th8, Tg8 18) h5, Td8 19) Tg8, Td7 20) Th8, Tc7 21) Fb8, Ca7 22) Tc8, Td7 23) Tc7c8+, Cc8 24) Fa7, Td8 25) Tb7, Td7 26) Tb8, Tb7 27) Ta8, Tc7 28) Fb8, Ca7 29) h4, Cc8 30) Ta3, Ca7 31) Td3, Cc8 32) Td4, Da3 33) Tf4d4+
La dame blanche peut sortir, la Tour noire en c7 peut regagner la case h8 et le Fou noir la case f8. On peut alors reprendre g7-g5 etc …
Une bien belle balade de tours, mais qu’elle est la démolition ? (2017-10-17)
Henrik Juel: Cook:
-1.d4xDe5 Dg3 -2.d3 Te6 -3.d2 Te3 -4.Th4 Tg4, retract Tb4 to g6, -12... h7 -13.Th6 Te6 -14.Tg6 Te3! -15.Tg8 Te6 -16.Tf8 Th6 -17.Tg8 Tg6xPh6 -18.Th8 Tg8 -19.h5 Td8 -20.Tg8 Td7 -21.Tf8 Tc7 -22.Lb8 Sa7 -23.Tc8 Td7 -24.Tc7 Sc8, retract Tc7 to a8, Td7 to c7, -28.Lc8 Sa7 -29.h4 Sc8
In the intended solution Black wasted b4-b3 at -14., forcing White to retract Ta8 to f4 to release the SE corner, but in the cook this also works:
-30.T=a7 b4 -31.a6 Sa7 -31.a5 a6xTSb5 etc. (2017-10-17)
Mario Richter: A much more simple cook is:
R: 1. d4xDe5+ Dg3-e5+ 2. d3-d4 Tg7-g6 3. d2-d3 Dh4-g3! 4. Kf4-f5 g6-g5+
which completely avoids the retro-opposition trouble in the north-west corner, so we first should check, if the given position is correctly typed into the PDB. Is it eg. in one of the Ceriani-books? (2017-10-17)
Brassaud: Remerciements pour ces explications ! (2017-10-17)
comment

Genre: Retro
Input: Gerd Wilts, 1995-6-3
17 - P0001220
Luigi Ceriani
93 Europe Echecs 49 01/1963
P0001220
(14+14)
Welches waren die letzten 7 Einzelzüge?
R: 1. ... Da1-c3+ 2. b6xSa7 Lh8-d4 3. c5xTb6! Dg7-a1 4. Kb2-c2 Tf6-b6+!
play all play one stop play next play all
Gerald Ettl: Ich sehe ehrlich gesagt nur (vermutlich) die AL:
R: 1.Da1c3+ 2.b6xSa7 3.Lh8d4 4.c5xTb6! 5.Dg7a1 6.Kb2c2 7.Tf6b6+
Kann dazu näher Angaben machen, wie etwa der cook aussehen sollte. (2017-1-19)
Henrik Juel: I see no other retroplay, either
Maybe the problem is not cooked after all? (2017-1-19)
Gerald Ettl: Henrik, dasgleiche denke ich auch. (2017-1-19)
A.Buchanan: I agree. I will remove the cook mark, but let's keep this conversation unhidden, for the record. (2017-1-20)
Mario Richter: The main point of the problem is the fact that to explain White's two pawn captures, black pawn h7 had to promote on g1 (Ph7-h3xg2-g1), therefore wPb2-b3 and wPg2-g3 cannot be soon retracted, and the retraction of bPh7/6xYg6/5 is illegal. I computer-checked the problem with this constraints, and my program rawbats only found the solution given by Gerald. (2017-1-20)
Yoav Ben-Zvi: What Mario calls "the main point of the problem" I consider as a mechanism not the primary thematic content. This can be seen in the solution retraction that contains a "Retro-Bristol" retraction by BBd4 crossing g7 for the BQ followed by a Retro-Critical retraction by BQc3 crossing f6 for BRb6 (a Retro-Indian). Looking at the same move sequence going forward the move BQg7-a1 is a Bristol clearance of d4 for BBh8. The BQ does not remain on a1, retreating back to c3, so that the clearance move does not contain the impurity of an arrival effect. A similar BQ,BB maneuver is shown in Baibikov's P1342072. (2017-10-30)
comment
Keywords: Last Moves? (7)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2017-1-20 more...
18 - P0001238
Filip S. Bondarenko
111 Europe Echecs 65 04/1964
P0001238
(15+15)
#1 (wer?)
1. ... Sbxc2#!
1. Sxc7? (illegal)
play all play one stop play next play all
H. Juel: White has made an even number of moves. Black has made an odd number of moves. So Black has the move!
more ...
comment
Keywords: Parity Argument, Whose move?
Genre: Retro
Reprints: Problemas 18, p. 479, 04/2017
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-19 more...
19 - P0001304
Luigi Ceriani
176 Europe Echecs 102 07/1967
P0001304
(11+14)
Löse die Stellung auf!
Alfred Pfeiffer: Zwei wK, Diagrammfehler? (2009-12-1)
TBr: Bei dem sBe7 tippe ich mal auf sKd6, auch ohne die Quelle nachschlagen zu können. (2009-12-1)
Henrik Juel: With black king on d6 (and count 11+14):
White captured [Ph7] with an officer and Lb8xTc7+, and promoted on a8.
Black captured [Pf2] with an officer and a6xb5, b6xc5, c5xd4, and dxPe.
-1.Lb8xTc7 Tb7 -2.La7 Tc7 -3.Sd7 Tb7 -4.Sb8 Tc7 ... -9.Sh3 Tb7 -10.Sf4xPh3 Tb8 ... -13.Sa6 Ta8 -14.Sc7 h4 -15.Lb8 Ta1 -16.La7 Tf1 -17.Lb8 Tf4 -18.La7 Tf1xPf4 -19.Lb8 Ta1 -20.La7 Ta2 -21.Lb8 Ta8 -22.La7 Tb8 -23.Sa8 Tb7 -24.f3 Tc7 -25.Lb8 Sa7 -26.f2 Sc8 -27.S=Pa7 h5 -28.a6 Sa7 -29.a5 a6xb5 etc. (2009-12-4)
Brassaud: Il semble exister une autre possibilité : -1) Fb8xTc7+, Fd7e6 2) Ce6f8+, Fe8d7 3) Fa7b8, Df8f7 4) Tf7g7, Fg7h6 5) Fb8a7, Th6g6 6) Tg6f6, Th4h6 7) Th6g6, Tf4h4 8) Th3h6, Th4f4 9) Ta3h3, Tf4h4 10) Ta8a3, Th4f4 11) a7a8=T, Tf4h4 12) a6a7, Th4f4 13) a5a6, a6xXb5 etc .. (pion h7 pris en h7 et pion f2 pris en f2) (2017-11-5)
Henrik Juel: I agree; with my abbreviated German notation
-1.Lb8xTc7 Ld7 -2.Se6 Le8 -3.La7 Df8 -4.Tf7-g7 Lg7 -5.Lb8 Th6
and the position opens easily, so there is no need for fancy uncaptures of [Pf2,Ph7]
This must be an unintended cook, if the diagram is correct (2017-11-5)
comment

Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: TBr, 2009-12-5 more...
20 - P0001317
Luigi Ceriani
189 Europe Echecs 109 02/1968
5. Preis
P0001317
(11+15)
Löse die Stellung auf!
Henrik Juel: Thanks for leaving this for me, Hans.
Black captured [Pa2 and Pf2], bxc, cxb, and dxe, and promoted on h1; White captured h6xg7, and promoted on d8.
-1... Sc4 -2.b6 Sa5 -3.e3 Sb7 -4.Dc8 Sb8! -5.Dd7 Lg8 -6.Dc8 Sa5 -7.Dd7 Sc4xPa5 -8.e2 Se3 -9.a4 Sf5 -10.a3 Sg3xPf5 -11.a2 Sh1 -12.f4 S=h2 -13.f3 h3 -14.f2 h4 -15.g4 h5 -16.g3 h7 -17.h6xSg7 Sf5 -18.h5 Sd4 -19.h4 Sb3 -20.h3 Sa5 -21.h2 Sb7 -22.Dc8, etc.
As I recall, Sam Loyd named a problem 'Stuck Steinitz'; sans comparaison, I shall name this fine retro 'Held Hans'... (2012-8-21)
Brassaud: Avec le rétro trait aux blancs, il y a une solution plus rapide. Un gain de 3 coups.
-1) Dc8 Lg8 -2) Db8 Sc4 -3) b6 Sa5 -4) e3 Sc4xa5 -5) e2 Se3 6) a4 Sf5 etc avec la suite comme Henrik. (2017-11-7)
Henrik Juel: It is quite possible that your solution is the intended one, Francois, althought I like the uncheck -7.Dd7 in mine
Some years ago Hans Nieuwhart and I started to provide solutions to the many retros entered by Gerd Wilts; most of those solutions were never checked, so your current work is much appreciated (2017-11-7)
Henrik Juel: typo: although, not althought, of course (2017-11-7)
Brassaud: thank you, Henrik, for your appreciation that goes straight to my heart (2017-11-8)
comment

Genre: Retro
Input: Gerd Wilts, 1995-6-3
21 - P0001359
Luigi Ceriani
233 Europe Echecs 134 03/1970
1. Preis
P0001359
(10+15)
Welche Züge hat der wBf gemacht?
R: 1. ... Dh6xSg6+ 2. g2-g3 Sc8-a7 3. La7-b8 g5xBf4 4. Lb8-a7 Ld8-c7 5. La7-b8+ Sc7-e8 6. Lb8-a7 Sa6-c7 7. La7-b8+ Lc7-d8 8. f2-f4! Sb4-a6 9. Lb8-a7 Sd3-b4 10. La7-b8 Sf4-d3 11. Lb8-a7 Sh3-f4 12. La7-b8 Sf4xBh3 13. Sh4-g6 Sg6-f4+ 14. Sf3-h4 Ld8-c7 15. Se1-f3 Lc7-d8 16. Sc2-e1 Ld8-c7 17. Sb4-c2 Lc7-d8 18. Sa6-b4 Lb8-c7 19. Sc7-a6 d3-d2 20. Sa8-c7 Lc7-b8 21. Lb8-a7 Sa7-c8 22. h2-h3 Sc8-a7 23. a7-a8=S d4-d3 24. a6-a7 Sa7-c8 25. a5-a6 a6xSb5
play all play one stop play next play all
hans: The move made is f2-f4 (not f2-f3)

R: -1. ... Dh6xSg6 -2. g2-g3 Sc8-a7 -3. La7-b8 g5xf4 -4. Lb8-a7 Ld8-c7 -5. La7-b8+ Sc7-e8 -6. Lb8-a7 Sa6-c7 -7. La7-b8+ Lc7-d8 -8. f2-f4!!!! Sb4-a6 -9. Lb8-a7 Sa2-b4 -10. La7-b8 Sc3-a2 -11. Lb8-a7 Se2-c3 -12. La7-b8 Sg1-e2 -13. Lb8-a7 Sh3-g1 -14. La7-b8 Sf4xh3!! -15. Sh4-g6 Sg6-f4+ -16. Sf3-h4 Lb8-c7 -17. Se1-f3 Lc7-b8 -18. Sc2-e1 Lb8-c7 -19. Sb4-c2 Lc7-b8 -20. Sa6-b4 Lb8-c7 -21. Sc7-a6 d3-d2 -22. Sa8-c7 Lc7-b8 -23. Lb8-a7 Sa7-c8 -24. h2-h3 Sc8-a7 -25. a7-a8=S d4-d3 -26. a6-a7 Sa7-c8 -27. a5-a6 a6xYb5 etc.
wCap: dxe,
sCap: axb, bxc, cxd, gxf, Sxh3, Dxg6, (2013-2-9)
Brassaud: A shorter solution is :
-1. ... Dh6xSg6 -2. g2-g3 Sc8-a7 -3. La7-b8 g5xf4 -4. Lb8-a7 Ld8-c7 -5. La7-b8+ Sc7-e8 -6. Lb8-a7 Sa6-c7 -7. La7-b8+ Lc7-d8 -8. Lb8-a7 Sb4-a6 -9. La7-b8 Sd3-b4 -10. Lb8-a7 Sf2-d3 -11. La7-b8 Sh3-f2 -12. f2-f4 !!!! Sf4xh3 -13. Sh4-g6 Sg6-f4+ etc … (2017-11-12)
comment

Genre: Retro
Reprints: feenschach 13 02/1973
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2017-11-12 more...
22 - P0001360
Max Lange
885 Deutsche Schachzeitung , p. 61, 02/1858
P0001360
(8+5) C+
#3
1. dxc6ep+! Kd5 2. Sf2 droht 3. Sc7#
2. ... bxc6+ 3. Lxc6#
play all play one stop play next play all
Originalforderung: Weiß zieht und soll auf die kürzeste Weise matt setzen. Matt in wieviel Zügen?

See also P0002092.
VL: The very first retro problem...
The author is presumably Max Lange,
as John Beasley (jointly with Hanspeter Suwe)
determined. See his article on the â??en passant keyâ?�
in The Problemist, May 2004 (pp. 391-392) and
Sept 2004 (p. 459). See also Chess Note 4417 (June 2006) in
http://www.chesshistory.com/winter/ . (2008-11-30)
Mario Richter: The list of contents (p.VIII) for the year 1858 explicitely gives Max Lange as the author of this problem. So could we really say, that the author is 'anonym'? (2010-12-9)
Henrik Juel: Only possible last move is c7-c5
C+ by Popeye 4.61 (2017-9-9)
Henrik Juel: A direct link to Chess Note 4417 is
http://www.chesshistory.com/winter/winter23.html#4417._Zukertort_problem_C.N._4042
But is does not provide new information (2017-11-9)
comment
Keywords: En passant, En passant as key
Genre: Retro
Computer test: Popeye 4.61
Reprints: Deutsche Schachzeitung , p. 313, 10/1906
53 Retrograde Analysis 1915
234 Europe Echecs 140-141 10/1970
RA1 diagrammes 11 10/1974
(A) feenschach 154 2004
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-12 more...
23 - P0001393
Luis Alberto Garaza
267 Europe Echecs 171 02/1973
P0001393
(13+16)
Die Rochade ist zulässig. Welches war der letzte Zug?
Brassaud: Letzte zug -1) …, g6g5 Le roque étant légal et le cavalier blanc ne pouvant venir de f6, le dernier coup a été joué par les noirs, pion g5 (venant de h6 ou de g6)
Décompte des coups joués jusqu’à la position finale :
Blancs : pions = impair, tours = impair, cavaliers = pair soit un total pair
Noirs avec dernier coup h6xCg5 : pions = impair, tour de a8 = impair, tour de h8 = impair, cavaliers = pair soit un total impair. Cet essai n’est pas légal.
Avec le dernier coup joué g6g5, la parité noire est changée : la tour de h8 a pu jouer un nombre pair de coups (via colonne h) (2017-11-14)
comment
Keywords: Castling (wk), Parity Argument
Genre: Retro
Input: Gerd Wilts, 1995-6-3
24 - P0001452
Jean Claude Dumont
Jean-Claude Gandy

326 Europe Echecs 225/226 10/1977
P0001452
(7+3)
#2
1. Lf5 b5+ 2. cxb5#
1. ... b6,bxc6 2. Lc8#
R: 1. ... Kb6xSa6 2. b5xc6ep+ c7-c5 3. Sc5xSa6 ...
play all play one stop play next play all
AV: 1 Ff5!. Derniers coups 1...Cb8-a6 2 Cc5xCa6+ c7-c5 3 b5xc6e.p.+ Rb6xCa6. (2005-6-26)
Brassaud: Je propose une autre solution ?
Rétro jeu : -1) Tb3b4, Rb5a5 -2) bxc6ep+, c7c5 -3) Te3b3+, Rc5b6 etc …
Trait noir. 0) … b6 1) Fb1, b5+ 2) cxb5# (2017-11-22)
Henrik Juel: Clever idea, Francois, but I believe the convention is that White has the move in a #2 problem, unless it can be proved that Black has no last move
With germanic notation the intended solution is
1.Lf5 b5+/b6,bxc6 2.cxb5/Lc8#
with retroplay
-1... Kb6xSa6 -2.b6xc5ep c7 -3.Sc5xSa6 etc. (2017-11-22)
comment
Keywords: Last Moves?
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-11-23 more...
25 - P0001631
Francois Brassaud
500 Europe Echecs 358 10/1988
P0001631
(14+10)
#1
b) alles ein Feld nach links
a) 1. gxf6ep#!
b) 1. bxc6ep#!
play all play one stop play next play all
Henrik Juel: In part a) Black has captured [Lf1] on f1 and [Lc1] on a dark square, so last move was neither c6xd5 nor g6xf5
Nor was last move d7-d5, because this would entail that Le4 were [Pa7] promoted on b1; this promotion is feasible with a3xLb2, but then the promoted bishop could not reach e4
So last move was f7-f5, allowing 1.gxf6ep#
Part b) is analogous, 1.bxc6ep# (2017-11-22)
comment
Keywords: En passant, Symmetrical position, Twin by board shift
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-11-23 more...
26 - P0001641
Francois Brassaud
510 Europe Echecs 367/368 07/1989
A. Hazebrouck gewidmet
P0001641
(13+14) cooked
KBP?
1. h4 e5 2. h5 Ke7 3. h6 Kd6 4. hxg7 Kc5 5. Th6 Kb4 6. Tc6 h5 7. e4 h4 8. Ke2 h3 9. Kf3 Th4 10. Le2 Sh6 11. g8=L f6 12. Lb3 h2 13. c4 h1=S 14. Dc2 Sg3 15. fxg3 a5 16. g4 a4 17. g5 axb3 18. g6 bxc2 19. g7 cxb1=T 20. g8=D
play all play one stop play next play all
Cook: 1. c2-c4 a7-a6 2. e2-e4 e7-e6 3. f2-f4 h7-h5 4. Dd1xh5 Ke8-e7 5. Dh5-b5 Th8-h4 6. Ke1-e2 Th4-g4 7. h2-h4 a6xb5 8. h4-h5 b5-b4 9. h5-h6 Ke7-d6 10. h6-h7 Kd6-c5 11. Th1-h6 Tg4-h4 12. h7-h8=D g7-g6 13. Dh8-c3 b4xc3 14. Ke2-f3 c3-c2 15. f4-f5 c2xb1=T 16. f5xg6 Kc5-b4 17. g6-g7 e6-e5 18. Th6-c6 f7-f6 19. Lf1-e2 Sg8-h6 20. g7-g8=D (H. Juel)
Henrik Juel: Cooked acc. to Euclide 1.01, e.g.,
1. Bc2-c4 Ba7-a6 2. Be2-e4 Be7-e6 3. Bf2-f4 Bh7-h5 4. Dd1xh5 Ke8-e7 5. Dh5-b5 Th8-h4 6. Ke1-e2 Th4-g4 7. Bh2-h4 Ba6xb5 8. Bh4-h5 Bb5-b4 9. Bh5-h6 Ke7-d6 10. Bh6-h7 Kd6-c5 11. Th1-h6 Tg4-h4 12. Bh7-h8=D Bg7-g6 13. Dh8-c3 Bb4xc3 14. Ke2-f3 Bc3-c2 15. Bf4-f5 Bc2xb1=T 16. Bf5xg6 Kc5-b4 17. Bg6-g7 Be6-e5 18. Th6-c6 Bf7-f6 19. Lf1-e2 Sg8-h6 20. Bg7-g8=D (2017-11-22)
comment
Keywords: Allumwandlung, Ceriani-Frolkin Theme (Ls), Unique Proof Game, Non-standard material
Genre: Retro
Computer test: Euclide 1.01
Reprints: 135 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-11-23 more...
27 - P0001737
Harold Holgate Cross
The Fairy Chess Review 1939
T.R. Dawson gewidmet
P0001737
(14+14)
Darf Schwarz ep schlagen?
R: 1. d2-d4 d5xSe4 ­2. Sg5-e4 Tg2-g1 ­3. Sf3-g5 Tg1-f1 ­4. Tf1-e1 d6-d5 ­5. Se1-f3 h7-h6 ­6. Lc2-d1 Kd1-c1 ­7. L~c2+.
R: 1. d3-d4? fails to Retro­ Opposition. So Black can capture e.p.
play all play one stop play next play all
Henrik Juel: At first sight the further resolution seems difficult, but this would seem to work:
Retract Pc3 to c2, Tb3 to f3, and Pb4 to b3, while the black king spends time on c1 and d1
The everything (but the kitchen sink, Se1) can be extracted via the a-file (2017-9-16)
comment
Keywords: En passant, Retro Opposition
Genre: Retro
Reprints: 223 FIDE Album 1914-1944/III 1975
(39) Die Schwalbe 72 12/1981
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-9-16 more...
28 - P0001917
Camil Seneca
L'Echiquier de Paris 1950
Lob
Mémorial Lazard
P0001917
(12+2)
#2
b) -sBf5
a) 1. Sc3! (Zugzwang) Kxb3 2. La4#
1. ... Kxd3 2. 0-0-0#
b) 1. Le8! (Zugzwang) Kxb3 2. Sd4#
1. ... Kxd3 2. Lg6#
play all play one stop play next play all
In a) last black move could be f-pawn. (castling possible)
In b) last black move is Kb1-c2 after Ta2-a1+ (no castling)
Mémorial Lazard
more ...
comment
Keywords: Cant Castler, Castling (wg)
Genre: Retro
Reprints: RA6 diagrammes 12/1974
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-12 more...
29 - P0001995
Thomas R. Dawson
Birmingham Post 14/07/1911
P0001995
(6+7)
#2
1. Sd4
1. ... bxa6 2. Db1#
1. ... b6 2. Sc6#
1. ... d5 2. Dg3#
1. ... fxg6 2. Tf8#
1. ... gxf6 2. Dg8#
play all play one stop play next play all
Schwarz hat keinen letzten Zug!
Sally: (Verwackelt)
1. Sb5-d4?
mit 5 Varianten, entsprechend den s. Bauernzügen :
Db1, Sc6, Dg3, Tf8, Dg8#. Aber :
Der w. König kann unmöglich die s. Bauernkette durchgebrochen haben, um nach d7 zu gelangen! Auch bei den 2 Zurücknahmen
c7, d6, oder e7, d6 bleibt diese Frage offen im Sinne der retrograden Analyse. Die Stellung des w. Königs ist partieunmöglich - das Problem ist verwackelt! (2017-8-9)
Henrik Juel: The problem is not of the 'Whose move?' type, and the specification 'Weiss am Zug' does not appear in 'Retrograde Analysis'
In 'RA' the problem is unclearly lumped together with two problems that have legal positions, but are incorrect as Black has no possible last move
This problem has an illegal position (because wK could not reach d7), so it is meaningless to ask for last move
I suggest that the Keyword 'Whose move?' is replaced by 'Joke' (2017-8-9)
Yoav Ben-Zvi: It seems to me this is a legitimate "Whose move?" problem since WK on d7 is illegal only if it is White to move. However after 0...BPb7xa6 White plays either 1.Nxd6 or 1.Q-b1 so the #2 is cooked. Correction: Move WNb5 to b3 and WPc3 to c4, add WPa5, WPc5, BPc6. (2017-8-22)
Thomas Volet: Surely Dawson knew that for the position to be legal it must Black's move in the diagram. Perhaps the joke is that the forward play is to continue with Black moving, particularly as it seems that White will be able to mate no later than it's second move no matter what Black does. I like the variation 1…. PxP, 2.Q-b1, but it has been a long time since this writer moved chess pieces in forward time, so no assurances. (2017-8-23)
Henrik Juel: My above comment is not well formulated...
In 'Retrograde Analysis' the problem appears in the chapter on illegal positions with the comment 'The present group is illegal, because it is White's turn to move, and Black could not have played last.'
It has the stipulation Mate in two, and the solution is stated as 1.Sd4; there is no indication that TRD was interested in 'Whose move?' or in the forward play after a first move by Black (2017-8-23)
A.Buchanan: In January 1911, Hjorth's accidental P0001996 had appeared, but July of that year was I think too early for the Article 15 theme to be established. Although Dawson here has accidentally created a very pretty position of Black pawns and White King, there is no indication that he is profiting from it by having new or interesting play after Black plays a zeroth move. In particular 0... b6 has many responses, which are also not defeated by Yoav's version.

I tried to find this newspaper in an archive, but 1911 seems not be stored.

@Henrik: what is the book 'Retrograde Analysis'? (2017-8-26)
Henrik Juel: Alain C. White published a book on chess problems each year for many years, and sent it to his friends for Christmas.
In 1915 the book was 'Retrograde Analysis' by Dawson and Hundsdorfer. It contains almost 300 problems, many by the authors, and includes many originals, like the Høeg classic with three e.p. captures. The Hjorth problem appeared as No. 2, on which the authors write:
'We remember our surprise at finding No. 2 reproduced by a careful editor with an added White Pawn at a2 and a Black Pawn at a3. Their remoteness from the field of action drew attention quaintly to the grave illegality they were intended to correct.' (2017-8-26)
A.Buchanan: OK I see. I will add this as a reprint. If Dawson himself said the problem simply had an illegal position, then that ends the discussion. Does anyone have a copy of L.N.de Jong's earlier "Onmogelijke Standen" in "Op de Hoogte" referred to on page 9? (2017-8-27)
Mario Richter: The date given for the de Jong article in the Dawson/Hundsdorfer book is wrong, correct is 09/1911.
The "Onmogelijke Standen" articles can befound at http://resolver.kb.nl/resolve?urn=dts:399009:mpeg21:0085 and http://resolver.kb.nl/resolve?urn=dts:399012:mpeg21:0074

The oldest problem I could find so far, which uses the "no legal last black move" Argument intentionally, is P1338137. (2017-8-27)
A.Buchanan: @Mario: thanks very much for the links. Page 41 of D&H also mentions a revolutionary pamphlet "On the Nature of Chess Problems" by A.Gehlert in 1903. I am curious about this, and I wonder if there is a copy of that extant? (2017-8-27)
Yoav Ben-Zvi: P0002016 is a #1 example from 1870. This contains a unique solution for every 'zero' move by Black, obviously an advantage although in case there is one Black move that leads to a unique solution then multiple solutions in other 'variations' can be tolerated as duals. This problem lacks a 'Try' that is refuted because it is Black's move. For a #2 that includes a 'Try' see P1012013 (noted by Andrew in comment to P0001996). (2017-8-27)
comment
Keywords: Illegal position
Genre: Retro
Reprints: 1770 Wiener Hausfrauen-Zeitung 51, p. 615, 15/12/1912
1B Retrograde Analysis , p. 7, 1915
479 Hamburger Problem-Nachrichten 09-10/1949
Im Wunderland des Schachproblems , p. 36, 1958
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-8-27 more...
30 - P0001996
H. H. Hjorth
707 Skakbladet 01/1911
P0001996
(3+2)
#3
1. f8=S? g6 2. Kh6 g5 3. Sg6# but Black has no last move!
0. ... g6 1. Kh6! g5 2. f8=D/T# short solution
0. ... Kxh7 1. f8=D! g6 2. Kf6 g5 3. Dg7#
play all play one stop play next play all
Henrik Juel: Orig. stipulation was just '#3'. 0... Kxh7 1.f8D g6 2.Kf6 g5 3.Dg7#, not 1.f8S? g6 2.Kh6 g5 3.Sg6, because Black has the move. (2004-3-8)
A.Buchanan: I think the original stipulation worked fine, with the convention that Black must play a defensive zeroth move. (2013-7-20)
Frank Müller: Die Autorabsicht ist 1. f8=S.
Im Maiheft 1911 (Seite 128) weist H. Hannemann auf die Illegalität hin und gibt an, dass die Autorabsicht durch wBa2/sBa3 gerettet werden kann.
Also kein Retro, sondern ein normaler Dreizüger. (2013-9-6)
A.Buchanan: @Frank: I didn't know this. Werner Keym in his book "Eigenartige Schachprobleme" treats this as an early (the earliest?) deliberate example of "Der 'falsche' Anzug". The fact that one of the two Black defences leads to a short mate suggests that it was accidental. But maybe this was how this theme (now enshrined in Article 15 of the Codex) was stumbled across. Knut Hannemann (not Harald, his father) provided a real example in 1929 (P1012013) but the most amazing early example for me was Axel Akerblom 1925 (P0005625). (2017-8-26)
comment
Keywords: No legal last move for Black
Genre: Retro, 3#
Reprints: 2 Retrograde Analysis 1915
(IV) problem 37-40 09/1956
1428 Problemskak 30, p. 19, 04-06/2015
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-8-26 more...
31 - P0002016
William A. Shinkman
1 Dubuque Chess Journal , p. 105, 15/11/1870
P0002016
(6+4)
#1
1. ... Kxd5 Dc5#
1. ... Kxf5 Dg5#
1. ... f6 Dxe6#
play all play one stop play next play all
Schwarz hat keinen letzten Zug.

Lösung in Heft 12, Februar 1871, S. 33:
"It will be seen that it must have been White's last move, if now Black move P-B3 or if K takes S Q mates."
'The Chess Journal' listet dann noch einige alternative Lösungsideen der Leser auf:
"To this Carpenter adds turn the board and Q takes B mates. Courtenay says -- Remove the KB from the Board. Davis thinks the Springers fell off and should have been placed on d6 and f6, whence a stalemate is easily effected."
Publiziert als "Chess Puzzle No. 1"
Originalforderung: "Suppose we find such a position at the end of a game; White's next move will effect a mate. How is it done?"
A.Buchanan: I would replace sL with sB, and have wK on d7 instead of wL, but what do I know compared to the "Wizard of Grand Rapids"? :-) (2017-8-28)
Henrik Juel: Maybe the Wizard wanted a cross-like position rather than a T-like one
C+ by Popeye 4.61 (2017-8-28)
Henrik Juel: ... or possibly the author wanted a pictorial warning that the unwary solver was about to be double-crossed (2017-8-28)
more ...
comment
Keywords: No legal last move for Black
Genre: Retro
Reprints: 12 Retrograde Analysis 1915
(I) problem 79-82 01/1962
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2017-8-28 more...
32 - P0002092
Karl Portius
35 Leipziger Illustrirte Zeitung 24/08/1844
P0002092
(5+6)
#2
1. gxf6ep+ Ke8 2. Sd6#
Der En passant-Schlag kann nicht begründet werden.
play all play one stop play next play all
Erschien mit folgendem Begelttext:
In einem Club spielten zwei mittelmäßige Spieler mit einander, als derjenige, der die Weißen hatte, ausrief: "Wenn Sie so ziehen, werden Sie gleich Matt." Bei diesen Worten trat der Präsident des Clubs, ein berühmter Meister, an das Schachbrett und erklärte: Weiß könne unmöglich Matt geben. Weiß ließ sich aber nicht stören, zog und setzte mit dem zweiten Zuge Matt; und der Herr Präsident konnte weiter nichts sagen als "Ah, so!"
from Dawson & Hunsdorfer, 1915:
"The actual origin of the en passant analytic is not certain. Way back in 1944, a year before the publication of the Indian problem, old Portius, the genial editor of the Leipzig Illustrated, published No. 53A [this problem] in connection with one of his chess tales. It is simply a trick problem, quite free of any thought of analysis, but we quote it for its historical significant. It set solvers' brains in action, and suggested the possibility of an analytic en passant key. [...] No. 53 [P0001360, 1858] fourteen years after No. 53A, is analytically sound, but unfortunately unidentified." [Author now known to be Max Lange.]
So this is a joke rather than cooked.
Henrik Juel: From the story we know that White can mate in two
this is possible only if last move was f7-f5
then C+ by Popeye 4.61 (2017-9-9)
comment
Keywords: En passant, Joke (en passant)
Genre: Retro
Reprints: 53A Retrograde Analysis 1915
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-9-9 more...
33 - P0003178
Tivadar Kardos
10575 The Fairy Chess Review 08/1956
P0003178
(5+15) C+
h#4
1. gxf3ep+ Kxh4 2. Tg7 hxg7 3. 0-0-0 g8=D 4. Kb8 Dxd8#
play all play one stop play next play all
Sally: Zuletzt geschach:
f2 - f4, Te3 - g3+! (2017-9-6)
Henrik Juel: Last move was not e3xf4, because the only capture by White was b2xa3; and not f3-f4, because then the check from Lc1 would be unexplainable (2017-9-6)
comment
Keywords: En passant as key, Castling (sg), Promotion (D), Valladao Task
Genre: h#, Retro
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 25 Die Schwalbe 217, p. 360, 02/2006
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-2-14 more...
34 - P0003179
Tivadar Kardos
10421 The Fairy Chess Review 02/1956
P0003179
(9+11) C+
h#3
1. fxg3ep Lxe2 2. Sa3 0-0-0 3. Sd2 Th1#
play all play one stop play next play all
Henrik Juel: for clarity: 1... Lxe2
White captured all missing black men by bxa, dxcxb, and exdxc, so Pg4 is [Pg2] and last move was g2-g4
C+ by Popeye 4.61 (2017-9-12)
more ...
comment
Keywords: En passant as key, Castling
Genre: h#, Retro
Computer test: C+ by Popeye 4.61 (2017-9-12) subject to manual proof of e.p. viability
Reprints: 141 200 Ausgewählte Schachaufgaben 1983
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-13 more...
35 - P0003463
Tivadar Kardos
1581 Problemista 03/1967
P0003463
(9+16)
h#4
1. 0-0-0?? 0-0 2. Kb8 Txc1 3. Ka8 Txb1 4. Tb8 Ta1# (0-0-0 ist illegal)
1. De6! h4 2. 0-0 h5 3. Kh8 hxg6 4. Tg8 Txh7#
play all play one stop play next play all
1. 0-0-0? ist nicht gestattet, da wegen der schwarzen Bauernstellung der weiße Bauer a2 auf a8 umgewandelt wurde!
more ...
comment
Keywords: Cant Castler, Castling (wksg)
Genre: h#, Retro
Reprints: 144 200 Ausgewählte Schachaufgaben 1983
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-6 more...
36 - P0004808
Hans Klüver
Teplitz-Schönauer Anzeiger 1922
P0004808
(11+8)
Weiß nimmt 1 Zug zurück, dann #3
R: 1. hxg6ep, dann 1. a6 2. a7 3. a8=D(T)#
play all play one stop play next play all
Adrian Storisteanu: Valladao implies a castling move too. Here, interestingly, the retraction key *invalidates* the black castling, which would otherwise refute the #3! Funny. (2017-9-19)
comment
Keywords: Help retractor, Castling, En passant, Promotion, Valladao Task
Genre: Retro
Input: Gerd Wilts, 1995-6-3
37 - P0004814
Piero Palazzi
1408 feenschach 25 10/1974
P0004814
(7+6) cooked
Schwarz und Weiß nehmen 1 Zug zurück, dann #1
R: 1. gxf3ep f2-f4, dann 1. Txd6#
play all play one stop play next play all
Adrian Storisteanu: Possible fix: +bPc4 (7+7) [eliminating cooks like - 1.Re5xSg5 Rc3xPc6 & 1.Sg5xf3#]. (2017-9-19)
comment
Keywords: En passant, Help retractor
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-8-11 more...
38 - P0004818
David Leo Brown
664 feenschach 11 10/1972
P0004818
(3+11) cooked
Schwarz nimmt 1 Zug zurück, dann h#2
R: 1. exd3ep, dann 1. e1=S Tf3 2. 0-0-0 Tc3#
play all play one stop play next play all
Cook: R: e4xd3 e.p., dann
1.Tg1-g2/4 Tf1xh1 2.O-O-O Th1-c1#
1.Dh1-h4/7 Tf1xg1 2.O-O-O Tg1-c1#
Adrian Storisteanu: Possible fix: +wPh2, +bPb5g2 (4+13).
Note: bBg6 is promoted. (2017-9-19)
Mario Richter: Retro play and forward play together yield a Valladao, right? (2017-9-19)
Adrian Storisteanu: With a pretty minor promotion too. Pity the obtrusive bB, the initial check, and (I guess) the cooks... (2017-9-19)
comment
Keywords: Help retractor, Castling, En passant
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2014-11-13 more...
39 - P0004925
Werner Frangen
12 Die Schwalbe 86, p. 230, 04/1984
P0004925
(9+9)
Einander ausschließende Rochaden
Henrik Juel: It seems easy to unpromote six pawns without disturbing the castling rights, so the the castling rights are not mutually exclusive in the usual sense
I believe this is a joke problem without retro content; it is impossible for both camps to castle in forward play, because White cannot find safe places for both La6 and Lc8 to allow black castling (only d5 is available), and vice versa
If we give up the white castling, we can play Ta1 to d7 and remove the offensive bishops via b5 and a4, then remove Td7, and Black can castle (and vice versa) (2017-9-13)
A.Buchanan: I think the best current category for this kind of problem is "Construction Record" which typically shows some kind of interesting relatively static position, e.g. maximizing number of mates in 1. See P0002838 for an example. If such a problem is retro, it may be because retro thinking was required to ensure that the extreme position can be derived from the Game Array. This one is not a retro problem, because it's trivial that the position is ok. However, it doesn't seem possible in PDB once a Genre has been assigned to remove all Genres, so we are stuck with that for now! I think "joke" must push against the rules or conventions in some way, while this one is completely regular. A joke designation is a bit like a question mark in an English cryptic crossword clue, but I am aware that this is a culturally dependent remark and perhaps not helpful! (2017-9-14)
Henrik Juel: I agree that Joke is not an appropriate category, but Construction Record is not that hot either
The problem is a curious example, highlighting the difference between the retro concept of castling right and the forward concept of actual castling
Usually there is no difference, but here both castling rights are intact (because you cannot show that a king or a rook must have moved), even though the actual castling possibilites are mutually exclusive (2017-9-14)
A.Buchanan: Maybe this problem originally appeared without a diagram, e.g. "Find a position for which a history exists allowing both players to castle, and yet in the forward game at most one player may do so." That would probably be a hard problem to solve.
I was wondering if some problems like these where the diagram would appear as part of the solution, such as colouring problems, rebuses, illegal clusters etc could be represented with 2 Probids: the first would give the problem without a diagram, and give a link to the second which would contain the diagram as part of the solution. We could have a new keyword "solution" to identify these kinds of entry. There would be a Probid link back from the solution to the original place where the question is posed, but it's arguable that there should not be author's name etc given with the solution, so the only way it can be searched is through the first question entity. What do you think? (2017-9-14)
Henrik Juel: Solutions with diagrams is an excellent idea that I have missed for a long time
I would prefer the solution diagram(s) directly under the problem diagram (like all other entries in the PDB, where problem and solution appear in one look-up); this might be feasible by the technique used in setting up A-B proof games with two diagrams (2017-9-14)
A.Buchanan: Setting up A-B is not doable by those with regular editing privileges, and no-one currently active knows how to do this. There is also the problem that all diagrams are initially visible, and it ruins the solver's experience if they accidentally see what the solution diagram looks like.
In the long term, when Gerd eventually re-activates himself, then on my request list is a "solver's mode" where Solution & Solution Text are invisible. Solution diagrams, if any, could also be made conditional in this way.
The 2 Probid approach can be done now without any intervention from Gerd, who seems to be extremely inaccessible at the moment. His basic design is so good that we are able to carry on, but even a humble request to give someone editing privileges has not been responded to. (2017-9-15)
Alfred Pfeiffer: Thematik der Position ist, einander ausschließende Rochaden "nicht durch Argumente aus der Vergangenheit der Stellung zu begründen, sondern von der Zukunft her". (Millour)
Jede der Rochaden ist möglich, aber nur mit Hilfe des Gegners, der dadurch das eigene Rochaderecht aufgibt. (2017-9-15)
A.Buchanan: I found two more schemas where retroanalytically both players may have retained castling rights, but at most one player can exercise them. One has only eight pieces! (2017-9-16)
Olaf Jenkner: Will you send it to a magazine? (2017-9-16)
Alfred Pfeiffer: In "Die Schwalbe" 86, p.233, sind von W. Frangen 2 weitere Positionen angegeben (in Notation):
I. Ke1 Ta1 Be6; Ke8 Th8 Be2 (3+3), Weiß am Zug;
II. Ke1 Th1 Bg4; Ke8 Th8 Bg5 (3+3), Anzug beliebig. (2017-9-17)
A.Buchanan: Ha Alfred these are fun, and must surely be economy records. i didn't want to send mine to a magazine because surely they must have been anticipated. Another bulkier idea is that neither side can castle because there is a knight on g1/g8 which can't move. If we post these with the same stipulation as above ("Einander ausschließende Rochaden") then what keyword category would be best, for these and some others which are currently described as Konstruktionrekord? (2017-9-17)
comment
Keywords: Castling, mutual exclusive, Castling, Non-standard material, Construction record
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-15 more...
40 - P0005280
Giuseppe Brogi
The Fairy Chess Review 1954
P0005280
(12+13) C+
#2
wQB can only have been captured on h6 as dark square. The dark-squared bishops cannot release one another, so must be bQ captured on e3. So bQB was captured on f3. Some white officer (R,QB,Q) must have been captured on e6 to release bQB, but white-squared bishops cannot release one another, so must have been bQ that was captured first to release officer to be captured on e6. Therefore bQ escaped via h-file. bKB was captured at home, and bK moved out to h-file too to release bQ, and Black cannot castle.
hans: 1.Tg8 (2.Sf8any#) 1…Sd7/Se6/Sh7 2.Sxd7/Sxe6/Sxh7# 1…e6 2.Sg7#

white captures dxDe3 exLf3 [Lf8]
black captures dxe6xf5xg4 (D/T/S) gxLh6!
White D/T/L can only come out after dxDe3, so black Queen must go out over h-line, this ruins the castling. (2017-9-12)
Henrik Juel: 1... e6 2.Sg6#
Pg4 has captured DTL
C+ by Popeye 4.61 (2017-9-12)
Henrik Juel: ... it goes without saying that all mates are made by Sf8 (2017-9-12)
Henrik Juel: Good detailed argument, Andrew
tiny typo: been captured on e6, not e3 (2017-9-12)
comment
Keywords: Castling
Genre: Retro
Computer test: Popeye 4.61
Reprints: 20 L'Echiquier de France 07/1957
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-9-13 more...
41 - P0005410
Erich Bartel
359 Diagramme und Figuren 14/07/1964
P0005410
(1+1)
-1(w+s), dann h#1
R: 1. b6xTa7 Ta8xDa7, dann 1. 0-0-0 Dc7#
play all play one stop play next play all
Adrian Storisteanu: See slightly earlier P0006291, which has a wK (on e1), and an unnecessary bPh2. (2017-11-13)
more ...
comment
Keywords: Help retractor, Castling, Kindergarten Problem, Rex solus (s)
Genre: Retro
Reprints: 14 Unsere Schachwelt 10/08/1965
24 1. Wolfschach-Club (Notizbuch) , p. 21, 1967
Sommer-Kollektion 1967
L104b Caissas fröhliche Tiefgarage 05/01/1971
50 Jahre Schachklub Kriegshaber 1974
i.t. feenschach 24, p. 357, 08/1974
Jugendschach 46 06/01/1985
K87 Problemkiste 89-90 10/1993
Rund um die Retroanalyse 21/08/2015
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-11-14 more...
42 - P0006011
Hans Doormann
449 FEENSCHACH 12/1950
P0006011
(4+4) cooked
-1(w+s), dann h#1
R: 1. b4-b5 b5xDa4, dann 1. Kb6-a6 Da4xa5 (AL/NL?)
R: 1. b4-b5 Ka6-b6, dann 1. b7-b6 b4-b5 (AL/NL?)
play all play one stop play next play all
Adrian Storisteanu: Possible quick fix (but impure mate): wPa4 [instead of the bP] (5+3), - 1.b4-b5 Ka6-b6 & 1.b7-b6 b4-b5# (switchback). (2017-9-18)
comment
Keywords: Help retractor
Genre: Retro
Input: Gerd Wilts, 1995-7-15
Last update: Alfred Pfeiffer, 2017-9-19 more...
43 - P0006150
Juri Lubkin
3193 diagrammes 111 10-12/1994
P0006150
(9+4) cooked
Ergänze den wK, dann #1
a) (+wKg5)
1. ... b6 Sc6#
1. ... c5 Lb8#
1. ... e3 Txe3#
1. Ld4#?? (retropatt, BTM)
play all play one stop play next play all
Cook: b) (+wKe3/+wKg3) 1. Ld4#
hans: Add wKg5. But then 1. Ld4#?? fails. This move is illegal because Black is retropat and then has the move. Mate in 1 is by 0 ... b6/c5/e3 1. Sc6#/Lb8#/Txe3#. (2015-8-14)
Alfred Pfeiffer: Why not +wKe3 (or +wKg3), then 1. Ld4# (2015-8-14)
A.Buchanan: @Alfred: I think you are right this is a cook. See P0005957 which maybe was a fix. (2017-10-11)
comment
Keywords: Add pieces
Genre: Retro
Input: Gerd Wilts, 1995-7-19
Last update: Alfred Pfeiffer, 2017-10-11 more...
44 - P0006200
Leon Loewenton
3318 FEENSCHACH 02-03/1957
P0006200
(1+3) C+
-1(w+s), dann h#1
R: 1. Kb6xTa6 Ta8xTa6, dann 1. 0-0-0 Ta8#
play all play one stop play next play all
Adrian Storisteanu: Fully anticipated by Sunyer's P0002489. BPh6 is unnecessary. (2017-11-13)
comment
Keywords: Help retractor, Castling in the forward play, Castling, Kindergarten Problem, Rex solus (w)
Genre: Retro
Computer test: Popeye Windows-32Bit v4.55 (312 MB) & Rawbats
Input: Gerd Wilts, 1995-8-13
Last update: Alfred Pfeiffer, 2017-11-14 more...
45 - P0006430
Juri Lubkin
9135 Die Schwalbe 157, p. 284, 02/1996
P0006430
(7+2)
Ergänze den wK, dann #1
3 Lösungen
+wKh6: 1. Le6#
+wKh4: 1. Ld3#
+wKh5: 1. ... f3 2. Txf3#
play all play one stop play next play all
See P0005957.
A.Buchanan: For starters push wLc4 to d5, and remove wSd2. And surely wTh3 can work harder on e file, allowing wS to be replaced by pawn, after rotating board somehow... (2017-10-11)
comment
Keywords: Add pieces, Whose move?
Genre: Retro
Input: Gerd Wilts, 1996-6-12
Last update: A.Buchanan, 2017-10-11 more...
46 - P0006788
Theodor Steudel
(23) feenschach 10 07/1972
P0006788
(4+3) cooked
-1(w+s), dann h=1
R: 1. a7-a8=S h2-h1=D, dann 1. h1=L a8=T=
play all play one stop play next play all
Cook: R: Sc7-a8 Dh2xDh1, dann 1.Dh2xg1 Dh1xg1=
R: Dd6-d8 Kc8xTb7, dann 1.Dh1-h7 Tb7xh7=
Adrian Storisteanu: Possible quick fix (non-miniature): +wPe3h6 (6+3). (2017-9-22)
comment
Keywords: Allumwandlung, Help retractor
Genre: Retro
Input: Gerd Wilts, 1996-7-28
Last update: Mario Richter, 2010-1-3 more...
47 - P0006790
Josef Haas
Theodor Steudel

(25) feenschach 10 07/1972
P0006790
(13+7) cooked
-1(w+s), dann h=1
R: 1. d7-d8=S g2xLh1=D, dann 1. gxh1=T d8=L=
play all play one stop play next play all
Cook: R: Se3-d1 Dg2xLh1, dann 1.Dg2xd5 Se3xd5=
Adrian Storisteanu: Relocating wSd1->g3 eliminates the mentioned cook and its variations. And retro analysis requires a wS capture for the position, hence -1...g2xSh1=Q?? doesn't work in the solution. (2017-9-19)
Mario Richter: I must be missing something - 1. ... g2xSh1=Q looks quite legal to me. (2017-9-19)
Adrian Storisteanu: Didn't the two bPs a3, b2 capture two white pieces on dark squares? One the dark-squared wB, the other a wS. (2017-9-19)
Mario Richter: The black pawns a+b didn't need to cross-capture, e.g.:
wCaps: a2xLb3 Sg1xTh3 b3xTa4 d6xc7 e5xd6 f5xe6 f4xSe5 g4xSf5 Ld2xDg5
wProms: h7-h8=S
sCaps: g2xSh1=D g4xLh3 h6xLg5 (2017-9-20)
Adrian Storisteanu: But the black retraction under scrutiny is done *after* white's -1.d7-d8=S, i.e., at that point all 8 wPs are on the board!? (2017-9-20)
Mario Richter: I completely forgot the retraction 1.d7-d8=S, so of course you're right, Adrian, and your suggested change wSd1 nach g3 makes the problem correct. (2017-9-20)
comment
Keywords: Allumwandlung, Help retractor
Genre: Retro
Input: Gerd Wilts, 1996-7-28
Last update: Mario Richter, 2010-1-3 more...
48 - P0006973
Werner Frangen
1358 feenschach 24 08/1974
P0006973
(5+10)
#3
1. 0-0
play all play one stop play next play all
Wenn Weiß rochieren kann, müssen entweder der sK oder der sT das weiße Retropatt aufheben, also kann Schwarz nicht mehr rochieren.
Henrik Juel: The retro argument is fine
but after the key there is triple threat 2.a8=DT+,Txd7 and promotion duals (2017-9-13)
comment
Keywords: Castling in the forward play (wk), Castling, mutual exclusive, Non-standard material
Genre: Retro
Input: Gerd Wilts, 1996-8-11
Last update: A.Buchanan, 2017-9-13 more...
49 - P0007337
Hansjörg Schiegl
VI. feenschach 37, p. 16, 01-03/1977
P0007337
(6+2)
#1
1. ... g6 Lf6#
1. ... g5 Th6#
1. Dxg7#??
1. Th5#??
play all play one stop play next play all
Schwarz hat keinen letzten Zug, also ist Schwarz am Zug!
1. ebbe-Destruktionswettbewerb, Teilaufgabe VI
Ausschreibung in fs Heft 32 (01-03/1976), S.241-243:
"Konstruiere mit dem Material des Partiesatzes eine partiemögliche Stellung, in der Weiß einzügig zweifach mattsetzen könnte. Die Retroanalyse ergibt jedoch, daß Schwarz am Zug ist; Schwarz hat zwei Züge zur Verfügung und Weiß setzt daraufhin sofort matt, jedoch müssen die Mattzüge untereinander verschieden sein und dürfen auch nicht mit den beiden Matts der Verführung (mit Weiß am Zug) identisch sein. (im ganzen also vier verschiedene Matts)! Anzustreben ist eine möglichst ökonomische Stellung.
Yoav Ben-Zvi: WQb2 must be a mistake, it plays no role. (2017-9-3)
Yoav Ben-Zvi: Its a pity the composer chose to mutilate the problem by the addition of WQg2 in order for it to conform to the highly technical requirements of a theme tourney. (2017-9-4)
comment
Keywords: No legal last move for Black
Genre: Retro
Input: Gerd Wilts, 1996-8-19
Last update: A.Buchanan, 2017-9-4 more...
50 - P0007563
Günter Lauinger
2721 feenschach 46 04-06/1979
P0007563
(9+8)
Rochade vor 3 Zügen
VRZ, Typ Hoeg
Henrik Juel: This attempt doesn't seem to work: -1.Kf2?:S Sg3:T
-2.Ta1:0! fPe6!:P
-3.Ke1:S!. What is the solution? (2004-7-12)
Henrik Juel: Thomas Brand provided the intended solution
In a Høeg retractor the two camps do not retract in the usual sense
Rather, White moves a man back, Black supplements a man (or nothing) on the abandoned square,
and only then is the white retraction completed
Similarly for a black 'retraction'
Legality must be observed throughout
-1.Kf2:S means that White moves his king back to f2,
then Black supplements a knight on f1 (because anything else would be illegal)

White captured [Lf8], bxa, d2xc3xb4xa5, gxh, and two more
Black captured c7xd6xe5, d7xe6xf5, f7xg6, either bxa or b2xc1 to promote Lh4 on a dark square, and one more
-1.Kf2:S (Sf1 is needed to uncheck) Sg3:0!
-2.Kf1:0 Se4:P! (now Black may not supplement, because White also captured fxg)
-3.Ke1:0, 1.0-0

-2.Kf1:S (now Black may not supplement) Se4:LS0 (trial)
-3.Ke1:0, 1.0-0
-2.Kf1:L?? it is illegal for Black to supplement Lf2: too many black pawn captures
-2.Kf1:DT?? White would stand in illegal double-check

-1.Ke1?:T! and immediate castling is illegal
-1.Ke1?:S! Sg3:0 -2.Kf1:S! and castling is hopeless (2017-8-20)
comment
Keywords: Castling in the forward play, Defensive Retractor, Type Høeg, Castling
Genre: Retro
Input: Gerd Wilts, 1996-8-31
Last update: Gerd Wilts, 2010-10-21 more...
51 - P0007802
Mordechai Shaham
Israel Ring Tourney 1971-1976
2. Preis
P0007802
(11+10)
#3
b) sLh3 nach c8
a) 1. 0-0? (illegal)
1. Txb7! Ka6 2. Tb4
b) 1. 0-0 ... 2. Ta1+
play all play one stop play next play all
Yoav Ben-Zvi, Solution:
All 6 missing Black pieces were captured by wPh7 and wPg4 including bBf8 which is released by bPg7-g6 after the completion of the fifth capture by wPg6xh7 so the bishop is the last Black piece captured on the dark square g3. The 5 captures by WPc2 on its way to h7 include the 2 missing bRs and bPh7 (directly or through its promotion). wPs a2,b2 did not capture so they could not promote and were captured on their original file. wBf1 was captured at home, wBc1 was captured on a dark square and the missing wN was captured on c6. bPg6 came from g7 as coming from h7 it would prevent access of wP to h7.
Looking backward: wPh7 could not uncapture bP on h7 since bPg6 must be retracted first from g7 which means bB needs to be retracted first from f8 but then the bRs that are uncaptured later will be locked out of h8. It also could not uncapture the bP later along the c2-h7 diagonal since this would require an uncapture by the uncaptured bP back along the same diagonal but only wBc1 is available which cannot be uncaptured on a light square. The above means bPh7 must be unpromoted either on g1 or h1
a) Diagram
If bPh7 is unpromoted on g1 then this is by bPh2xBg1 (only wBc1 is available for uncapture on the dark square g1) but then bPh2 cannot retreat further until BB vacates h3 which requires retreat of wPg4 to g3 which locks in bBg1. Therefore bPh7 is unpromoted on h1 which means WRh1 moved so White cannot castle.
b) bBh3 to c8
bPh7 could be unpromoted on g1 so White can castle.
Retraction: wQf1—b2, bQg1—f8, bPh2xwBg1=Q, bPh3-h2, wBc1—g1, wQd1—f1, wPg3-g4, wPh2xBg3, bBf8—g3, bPg7-g6, wPc2xd3xe4xf5xg6xh7
more ...
comment
Keywords: Castling, Cant Castler
Genre: Retro
Reprints: feenschach 54, p. 111, 04/1981
Input: Gerd Wilts, 1996-9-3
Last update: Alfred Pfeiffer, 2017-10-11 more...
52 - P0008197
Claude Beaubestre
Messigny 06/1995
2. Preis
P0008197
(13+14) cooked
BP in 20,5
1. Sc3 h5 2. Se4 h4 3. Sg3 hxg3 4. h3 Th4 5. Th2 gxh2 6. Tb1 hxg1=L 7. Ta1 Lh2 8. Tb1 Le5 9. Ta1 Lc3 10. Tb1 e5 11. Ta1 La3 12. Tb1 c5 13. Ta1 Da5 14. Tb1 b6 15. Ta1 Lb7 16. Tb1 Lf3 17. exf3 a6 18. Lxa6 Sc6 19. Lf1 0-0-0 20. Ke2 Sd4+ 21. Kd3
play all play one stop play next play all
Cook: 1. Sc3 e6 2. Sb5 La3 3. Sxa7 c5 4. Sb5 Da5 5. Sc3 b6 6. Se4 Lb7 7. Sg3 Lf3 8. exf3 h5 9. h3 h4 10. Th2 hxg3 11. Ke2 gxh2 12. Kd3 hxg1=L 13. De1 Lh2 14. De2 Le5 15. De3 Lc3 16. De4 Sc6 17. De5 Th4 18. De1 e5 19. Dd1 Sd4 20. Tb1 0-0-0
XVII (version) cooked
NL: 1. Sc3 e5 2. Se4 La3 3. Sg3 c5 4. h3 Da5 5. Th2 b6 6. Tb1 Lb7 7. Ta1 Lf3 8. exf3 h5 9. Ke2 h4 10. Kd3 hxg3 11. Tb1 Th4 12. Ta1 Te4 13. Tb1 Te1 14. Le2 gxh2 15. Ta1 hxg1=L 16. Tb1 Lh2 17. Ta1 Th1 18. Lf1 e4+ 19. Ke3 Le5 20. Tb1 Lc3 21. Ke2 Sc6
mitgeteilt von T. Le Gleuher.
Die Korrektur P1338766 ist C+.
more ...
comment
Keywords: Unique Proof Game, Loss of tempo, Castling, Switchback, Promotion (L), Superseded by (P1338766)
Genre: Retro
Reprints: (XVII) Phénix 34 10/1995
(11) feenschach 117 11/1995
Input: Gerd Wilts, 1996-9-10
Last update: Olaf Jenkner, 2017-9-20 more...
53 - P0009050
Chris Patzke
9927v Die Schwalbe 169 02/1998
P0009050
(14+2) cooked
-1w, dann #1
R: 1. Sd7-c5+, dann 1. Ta5#
play all play one stop play next play all
Möglichst viele letzte Schachzüge
Mario Richter: Die Anzahl der letzten Züge ist wie vom Autor beabsichtigt 256.
Allerdings ist die Aufgabe nebenlösig durch: R: c7-c8=L, dann 1.Sd6-c8# (2010-1-4)
Adrian Storisteanu: I think Mario's cook beats the intended solution. In this spirit, a possible correction: -bRb2, +bQb4 (14+2), - 1.c7-c8=B & 1.Sd6-c8#. (2017-9-21)
comment
Keywords: Help retractor, Non-standard material, Aristocrat
Genre: Retro
Input: Gerd Wilts, 1998-6-26
Last update: Alfred Pfeiffer, 2017-9-22 more...
54 - P0500077
Florian J. Kovacs
Tivadar Kardos

7912 Die Schwalbe 210, p. 99, 09-10/1950
A.C. White gewidmet
1. Preis
Abt. Hilfsmatts
P0500077
(7+13) C+
h#4
1. e1=T La2 2. Ta1 Lb1 3. Ta4 La2 4. Dc4 bxc4#
play all play one stop play next play all
more ...
comment

Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 1338 FIDE Album 1945-1955 1964
113 200 Ausgewählte Schachaufgaben 1983
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2017-9-6 more...
55 - P0500112
Laszlo Talaber
Tivadar Kardos

10048 Die Schwalbe 263-2, p. 422, 07-08/1955
5. Preis
P0500112
(3+11) C+
h#2
5.1...
1) 1. Sc3 Db1 2. Kc4 Se3#
2) 1. Dc7 Db4 2. Kc6 Se7#
3) 1. Ke6 Dc7 2. d5 Sg7#
4) 1. Ke4 Db3 2. De5 Sxg3#
5) 1. Lb7 De8 2. d6 Se3#
play all play one stop play next play all
Sally: Fünf Springermattbilder mit schwarzem Königsstern.
81, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment
Keywords: Echo, Figurenspiel, king's star
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 81 200 Ausgewählte Schachaufgaben 1983
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2017-9-7 more...
56 - P0500692
Tivadar Kardos
2316 Magyar Sakkelet 1957
Ehrende Erwähnung
P0500692
(2+14) C+
h#4
4.1...
1) 1. Kd3 a6 2. Kc2 a7 3. Kc1 a8=D 4. c2 Da1#
2) 1. f2 a6 2. Kf3 a7 3. Kg2 a8=D+ 4. Kf1 Dh1#
3) 1. Ke5 a6 2. Kf6 a7 3. Kg7 a8=D 4. Kh6 Dh8#
4) 1. Kd5 a6 2. Kc6 a7 3. Kb7 Ka3 4. Kc8 a8=D#
play all play one stop play next play all
(KSp)
klären: welche Quelle ist das Original?
VoFe: Schach = Letztes Heft von 1957 (24/1957). Welcher Monat bzw. welche Heft-Nr. in Sakkelet? (2006-8-27)
Sally: Damenmatt in 4 verschiedenen Ecken.
118, 2oo Ausgewählte Schachaufgaben [T. Kardos] 1983.
Dort Quelle Magyar Sakkélet, 1957, Ehr. Erw. (2017-9-6)
comment
Keywords: Echo, Figurenspiel, Promotion
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 2786 Schach 24, p. 379, 12/1957
118 200 Ausgewählte Schachaufgaben 1983
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2017-9-6 more...
57 - P0500748
Tivadar Kardos
Weihnachtsgrüße 1952
P0500748
(2+9) C+
h#6
1. f1=D+ Kg3 2. Dc1 h4 3. Dg5+ hxg5 4. b1=D g6 5. Db4 g7 6. Df8 gxf8=D#
play all play one stop play next play all
Umwandlung!3-fach, Excelsior
Sally: Zwei schwarze und eine weiße Damenumwandlung, bei nur 11 Steinen.
125, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
more ...
comment
Keywords: Promotion, Excelsior, white (auto key), Kindergarten Problem
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 125 200 Ausgewählte Schachaufgaben 1983
723 Ungarische Schachprobleme mit wenigen St 1985
406 Minimalkunst im Schach 2006
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2017-9-6 more...
58 - P0500795
Tivadar Kardos
Weihnachtsgrüße 1961
P0500795
(2+8) C+
h#8
1. e1=S Kh1 2. Sf3 gxf3 3. e3 f4 4. e2 f5 5. e1=S f6 6. Sd3 fxe7 7. Sc5 e8=S 8. Sb7 Sc7#
play all play one stop play next play all
Unterverwandlung!Springer!3-fach
more ...
comment
Keywords: Promotion, under-promotion (sss), Excelsior, white (auto key)
Genre: h#
Computer test: C+ PY V4.41
Reprints: v Festgrüße 1961-1962
133 200 Ausgewählte Schachaufgaben 1983
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2017-9-6 more...
59 - P0501055
Wolfgang Pauly
(30) Norwich Mercury 1908
4. Preis (Vierzüger)
Selbstmatt-Turnier 1908-10
P0501055
(12+2) C+
s#4
1. h8=D! Ke6 2. c8=L Kd6 3. e8=T+ Kc6 4. b8=S+ Sxb8#
1. ... Kc6 2. Df6+ Sxf6 3. d5+ Sxd5 4. Sb4+ Sxb4#
play all play one stop play next play all
PR C.Planck und J.W.Allen: An uncommonly fine "task" problem, rather tricky, and more clever than artistic. Its construction can hardly have been so difficult as at first migth appear. The main line was, no doubt, composed backwards. The difficulty, then, was how to meet (1) Kc6, and this was surmounted, ingeniously, but inartistically, by means of the Knight a c2, which is not required for the main play. Incidentally, the subsidiary variation became the means of preventing (1) Ph8(B).
Klären: Stimmt 1908? (Im 'Caduceus' heißt es: "The 100 positions contained in this volume are selected from the 150 or more, published in the "Norwich Mercury" Inverse-mate tourney of 1909-10".)
Sally: Eine Spezialität der Bauernumwandlung.
Die Lösung beginnt zunächst wenig aufregend.
1. h8D! damit nach :
1. - Kc6 der Springer nach b4 gelenkt wereden kann :
2. Df6+! - Sxf6, 3. d5+ - Sxd5, 4. Sxb4+ - Sxb4#.
Lustig wird es erst aber, wenn Schwarz :
1. Ke6 zieht :
2. c8L! - Kd6, 3. e8T+! - Kc6, 4. B8S! - Sxb8#.
W. darf im 3. Zug keine Dame wählen, um nur ja nicht einen Zug später selbst mattzusetzen, denn damt hätte er ja verloren!. die Aufgabe zeigt also eine w. Allumwandlung in 4 aufeinanderfolgenden Zügen. (2017-8-4)
more ...
comment
Keywords: Allumwandlung, konsekutive Umwandlungen 4 (DLTS)
Genre: s#
Computer test: Erich Bartel: PY V3.1.---
Reprints: 91 The Caduceus 1910
56 The Theory of Pawn Promotion 1912
101 Kurioses Schach 1960
FEENSCHACH Bl.599 04-05/1965
Themes-64 38 04-06/1965
63 Die Allumwandlung im Problemschach 08/1966
i.t. The Problemist 01/1982
82 Schach für Nußknacker 1994
Sahovska kompozicija 01-12/1995
Phénix 43 07-08/1996
1 feenschach 146, p. 397, 03-05/2002
1011 Minimalkunst im Schach 2006
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2017-8-4 more...
60 - P0501791
Robert Sharp
3082 Problemkiste 12/1992
1. Preis
Wenigsteinerjahrespreis 1992
P0501791
(2+2) C+
h=3
0.4.1...
1) 1. ... c8=S 2. Td7+ Kxd7 3. Ka8 Kc7=
2) 1. ... c8=T 2. Tc7 Txc7+ 3. Ka8 Kc8=
3) 1. ... c8=D+ 2. Ka7 Dc6 3. Tc7 Kxc7=
4) 1. ... c8=L+ 2. Ka7 Lb7 3. Tc7 Kxc7=
play all play one stop play next play all
Robert Sharp=Pseudonym des Hanspeter Reich
Alfred Pfeiffer: Nach den modernen FIDE-Regeln (seit 1984) endet das Abspiel
1)1. ... c8=S 2. Td7+ Kxd7 bereits nach diesem Zug mit REMIS (wegen unzureichendem Material), d.h. es kann nicht mehr zu einer Pattstellung kommen. (2010-4-21)
hpr: Das ist lustig!
a) wieso sollte eine 'Partie'-FIDE-Regel für ein Hilfspatt gelten?
b) wenn es nach 2. Td7+ Kx7 zu keiner Pattstellung mehr kommen kann, wieso ist dann nach 3. Ka8 Kc7 trotzdem patt? (2010-4-21)
Alfred Pfeiffer: Warum sollten die FIDE-Regeln ausgerechnet für (Hilfs-)Patt nicht gelten? Der Retro-Sektor "Dead Reckoning" ist eine spezielle auf dieser FIDE-Remisregel basierende Anwendung. Ein Beispiel: P0005387 (Plaksin), weitere mittels Suchen nach "K='A1.3'". Auch im Partieschach gibt es gelegentlich diesen Effekt, daß eine finale Remisposition nicht beachtet und die theoretisch bereits beendete "Partie" noch fortgesetzt wird: "http://www.schachfieber.de/2009/12/16/tote-stellungen-in-regelwerk-komposition-und-partie/" (2010-4-21)
Mario Richter: Volle Unterstützung für hpr! Daß das Material ausreicht, beweisen die oben angegebenen Lösungen doch eindrücklich! Eine FIDE-Regel, die sich explizit auf das Ziel "den gegnerischen König mattzusetzen" bezieht, kann wohl kaum auf das Ziel "eine Seite pattsetzen" bezogen werden. (2010-4-21)
Alfred Pfeiffer: Ja, das Matreial erlaubt Patts. Aber wenn man die Pattstellung erreichen will, muß man darauf achten, daß das Spiel nicht vorher wegen Erreichen einer anderen finalen Remisstellung abrupt endet. Welche Stellungen finale Remisstellungen sind, ist in den FIDE-Regeln unabhängig vom Spielziel festgelegt.
Seit 1984 gehören dazu u.a. K gegen K und Leichtfigur.
Andere zu vermeidende Remisfallen könnte die 50-Züge-Regel oder Stellungswiederholungen sein. Beispiel für letztere: P1013733 (Hans Gruber, Ser-H=12 genau). (2010-4-21)
hpr: Alfred, die FIDE-Regeln sagen nichts zu solchen Märchenschachformen. Sie sind für das Partieschach entwickelt. Und da macht eine "Remis"-Regel ja sogar Sinn. Hans Grubers Beispiel wäre nach Deiner Auffassung sogar illegal, weil eine Partei nicht zweimal hintereinander ziehen darf. Ich möchte aber die Diskussion darüber in diesem Forum beenden. Wenn "dieschwalbe.de" mal ein Forum macht/hat, dann kann man da weiterdiskutieren. Hier gilt: die FIDE-Regel ist nicht anzuwenden und ich hätte mir gewünscht, dass deine so grundsätzlichen Aussagen darüber nicht gleich in einer Vielzahl von Comments gelandet wäre. Jetzt können wir die wieder löschen/unsichtbar machen.
Außerdem: du willst doch nicht einen der besten Viersteiner überhaupt kaputt machen, oder? :-) (2010-4-21)
Alfred Pfeiffer: Auch für die Märchenschachformen sind die FIDE-Regeln (Artikel 1-5) die Ausgangsbasis, von der durch die in der Forderung angegebenen Zustatzbedingungen abgewichen werden kann. (Hans Grubers Beispiel ist daher nicht illegal, weil der Zusatz 'Ser-' in der Forderung steht.) Da A1.3 durch die "Dead Reckoning" im Problembereich legitimiert ist, kann er auch bei anderen Problemgruppen nicht einfach ignoriert werden. Evtl. wäre bei Aufgaben wie der vorliegenden ein Zusatz in der Forderung sinnvoll (z.B. "Ohne FIDE-A1.3") oder man schreibt gleich in den Codex, daß er für (Hilfs-Patts unberücksichtigt bleiben kann.
Ein Forum für Diskussionen wie diese wäre in der Tat schön. (2010-4-21)
Alfred Pfeiffer: Mittlerweile ist mir klar, dass im Problemschach die Pattforderungen ('h=' etc.) keine Forderungen nach einem FIDE-Remis sind. Aufgaben dieses Typs sind keine orthodoxen Probleme sondern gehören zur Katgorie Märchenschach. Man könnte sie als Forderungen nach einem "Pattsieg" betrachten, den es früher gegeben hat (bis wann eigentlich?). (2017-1-5)
Ladislav Packa: Laws of Chess FIDE, Article 5: The completion of the game
5.2 b.
The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal moves. The game is said to end in a ‘dead position’. This immediately ends the game, provided that the move producing the position was legal.
The Laws of Chess are saying about the GAME and the PLAYERS. But this is a chess problem and does not concern the players, but COMPOSERS and SOLVERS. (2017-1-5)
Erich Bartel: Diese Aufgabe habe ich von H.P.Reich zugesandt erhalten, der
anmerkte, dass der Autor keinen Absender angegeben hat.
Über dem Diagramm steht als Ortsangabe(??): AUS-Wagga-Wagga.
Na, weiß der Kuckuck was das bedeuten soll.\eb
Zwischenzeitlich ist mir bekannt, dass Wagga-Wagga in Australien
liegt. Das zugesandte Belegheft kam aber als unzustellbar
zurück.\eb
Wieder zwischenzeitlich ist mir bekannt, daß Sharp ein Pseudonym
von H. P. Reich und A. Schöneberg ist. \eb (2017-8-2)
A.Buchanan: @Ladislav: the excellent codex convention 17A established by WCCC committee in 2015 states: "Unless expressly stipulated, the rule of dead position does not apply to the solution of chess compositions except for retro-problems." (2017-8-3)
more ...
comment
Keywords: Allumwandlung
Genre: Fairies
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: The Problemist , p. 259, 11/1993
Springaren 57 06/1994
K58 Problemkiste 04/1995
Phénix 29, p. 2743, 05/1995
408 Moderne Kleinkunst 1996
Phénix 49, p. 3503, 02/1997
Early Helpmates , p. 452, 08/2001
Minimalkunst im Schach , p. 568, 2006
181 1.Wolfschach-Club 1962 (Notizbuch) , p. 80, 10/2016
III Die Schwalbe 285, p. 123, 06/2017
Input: hpr, 1996-7-11
Last update: Alfred Pfeiffer, 2017-8-2 more...
61 - P0502886
Jacques Rotenberg
Jean-Marc Loustau
Michel Caillaud

(XVI) Rex Multiplex 8, p. 206, 10-12/1983
2. Preis
P0502886
(3+15) C+
h#3
1. Te5 Ld5 2. Te6 Te5+ 3. De4 Tf5#
play all play one stop play next play all
Total-Umnow
Jacques Rotenberg: .
"complete Umnov" or "closed sequence of Umnov" meaning that all the squares involved (d5, e5, e6, e4, f5) have at least once the Umnov on it.

twice bicoloured exchange of places between initial and final position (2017-9-29)
comment
Keywords: Interchange (Lt Td), Umnov
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: (15) feenschach 99, p. 6, 01-08/1991
Input: hpr, 1996-8-26
Last update: Alfred Pfeiffer, 2017-9-29 more...
62 - P0502888
Jean-Marc Loustau
Jacques Rotenberg

(XX) Rex Multiplex 8, p. 207, 10-12/1983
P0502888
(5+10) C+
h#3
1. Dxe5 d6 2. Dd5 Te5+ 3. De4 Td5#
play all play one stop play next play all
Total-Umnow
Jacques Rotenberg: .
"complete Umnov" or "closed sequence of Umnov" meaning that all the squares involved (d6, e5, d5, e4) have at least once the Umnov on it. Twice Umnov on d5.

successive bicoloured exchange of places (first between queen d6 and pawn d5 then between queen d5 and rook e4) giving a cyclic change of places (d6, d5, e4) (2017-9-29)
comment
Keywords: Interchange (Bd Td), Umnov
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: (18) feenschach 99, p. 7, 01-08/1991
Input: hpr, 1996-8-26
Last update: Alfred Pfeiffer, 2017-9-29 more...
63 - P0502889
Jean-Marc Loustau
Michel Caillaud
Jacques Rotenberg

(XXI) Rex Multiplex 8, p. 208, 10-12/1983
Spezialpreis
P0502889
(5+16) C+
h#3
1. Tf3 Dg3 2. Tf2 Df3 3. g3 Dg4#
play all play one stop play next play all
Total-Umnow
Jacques Rotenberg: .
"complete Umnov" or "closed sequence of Umnov" meaning that all the squares involved (g3, f3, f2, g44) have at least once the Umnov on it. Twice Umnov on d5.

successive bicoloured exchange of places (first between rook g3 and queen f2 then between queen queen g3 and pawn g4) giving a cyclic change of places (f2, g3, g4) (2017-9-29)
comment
Keywords: Interchange (Dt Db), Umnov, Non-standard material (dd)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: (19) feenschach 99, p. 8, 01-08/1991
Input: hpr, 1996-8-26
Last update: Alfred Pfeiffer, 2017-9-29 more...
64 - P0502890
Jean-Marc Loustau
Jacques Rotenberg

(14) feenschach 99, p. 6, 01-08/1991
P0502890
(3+10) C+
h#3
1. Sd6 Le8 2. Sf7 Ld6 3. c5 Lc7#
play all play one stop play next play all
Total-Umnow
Jacques Rotenberg: .
"complete Umnov" or "closed sequence of Umnov" meaning that all the squares involved (e8, d6, f7, c5, c7) have at least once the Umnov on it.

twice bicoloured exchange of places between initial and final position (2017-9-29) (2017-9-29)
comment
Keywords: Interchange (Ls Lb), Umnov
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1996-8-26
Last update: Alfred Pfeiffer, 2017-9-29 more...
65 - P0502892
Jacques Rotenberg
Jean-Marc Loustau

(XVIII) Rex Multiplex 8, p. 207, 10-12/1983
2.-3. ehrende Erwähnung
P0502892
(4+11) C+
h#3
1. Sc3+ e4 2. Se2 Tc3+ 3. Lc2 Td3#
play all play one stop play next play all
Total-Umnow
Jacques Rotenberg: .
"complete Umnov" or "closed sequence of Umnov" meaning that all the squares involved (e4, c3, e2, c2, d3) have at least once the Umnov on it.

twice bicoloured exchange of places between initial and final position (2017-9-29) (2017-9-29)
comment
Keywords: Interchange (Bs Tl), Umnov (5)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: (17) feenschach 99, p. 7, 01-08/1991
Input: hpr, 1996-8-26
Last update: Alfred Pfeiffer, 2017-9-29 more...
66 - P0503551
Jacques Rotenberg
Jean-Marc Loustau

245 Ideal-Mate Review 11/1983
P0503551
(3+3) C+
h#5
1. Sh3 Kh7 2. Kf7 Kh8 3. Kg6 Kg8 4. Kh5 Kg7 5. Sg5 g4#
play all play one stop play next play all
Jacques Rotenberg: .
square of the white king (2017-9-29)
comment
Keywords: Pure Round Trip (K)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 224 Ideal-Mate Encyclopedia Vol.1 1999
Input: Hans-Jürgen Schäfer, 1996-9-23
Last update: Alfred Pfeiffer, 2017-9-29 more...
67 - P0503561
Tivadar Kardos
Verb. Festgrüße 1973-1974
P0503561
(2+2) C+
h#5
1. Kd5 Kg7 2. Ke6 Kh6 3. Kf7 Kg5 4. Kg8 Kf6 5. Kh8 Kf7#
play all play one stop play next play all
ursprünglich b) wKf7 nach a1, aber NL !
Sally: Rückkehr des w. Königs.
123, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment
Keywords: Pure Round Trip (K), Aristocrat, Alleinunterhalter, Durbar Theme
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 123 200 Ausgewählte Schachaufgaben 1983
Input: Hans-Jürgen Schäfer, 1996-9-23
Last update: Alfred Pfeiffer, 2017-9-6 more...
68 - P0503636
Jacques Rotenberg
Jean-Marc Loustau

1786 Ideal-Mate Review 04-06/1986
P0503636
(2+5) C+
h#4
1. Kg4 Le4 2. f4 Lf5+ 3. Kf3 Lh3 4. Lg4 Lg2#
play all play one stop play next play all
Jacques Rotenberg: rectangle of the white bishop (2017-9-29)
comment
Keywords: Pure Round Trip (L), Minimal
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 1193 Ideal-Mate Encyclopedia Vol.1 1999
Input: hpr, 1996-9-23
Last update: Alfred Pfeiffer, 2017-9-29 more...
69 - P0504386
Claude Goumondy
1668 Europe Echecs 01/1971
P0504386
(3+7) C+
h#2
4.1...
1) 1. Sd3 Dxc6+ 2. Kd4 Te4#
2) 1. Da7 Te6 2. Dd4 Dxc6#
3) 1. b3 Te4 2. Dd6 Dc4#
4) 1. Kd6 Dc4 2. Lf3 Te6#
play all play one stop play next play all
WT- WD- WT- WD
klären Jahr
Sally: Europe Echecs 1974.
Zählt nicht zu Goumondys stärksten Leistungen, aber es ist ein sehr ökonomisches und sympatisches Stück.
1. Sd3- Dxc6+(A) 2. Kd4 - Te4# (B);
1. b3 - Te4 (B) 2. Dd6 - Dc4# (C);
1. Kd6- Dc4 (C) 2. Lf3 - Te6# (D);
1. Da7- Te6 (D) 2. Dd4 - Dxc6#(A).
Ein viergliedriger w. Zyklus mit nur 10 Steinen. (2017-8-8)
comment
Keywords: Cycle
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: Europe Echecs 1974
Input: Torsten Linss, 1996-10-9
Last update: Alfred Pfeiffer, 2017-8-9 more...
70 - P0504745
Tivadar Kardos
Robert J. Darvall

1727 Magyar Sakkelet 10/1954
11. ehrende Erwähnung
BTSBT
P0504745
(6+12) C+
h#2
2.2.1.1 + 2.1...
1) 1. Kd6 exf3 2. Dc6 De5#
2) 1. Kc5 exf3 2. Dc6 Dd4#
3) 1. Kxe6 Kc8 2. Dd5 Df6#
4) 1. Kxe6 gxf5+ 2. Kf7 Dg7#
5) 1. Kc4 exd3+ 2. Kb3 Db2#
6) 1. Kc4 Dxe1 2. Dd5 Dc3#
play all play one stop play next play all
DSp
Sally: Turnier des Budapester Ausschusses für Körperkultur und Sport, 1954 ; 11. Ehr. Erw.
Taskproblem mit 6 Damenmattbildern in der Diagonale b2-g7!
78, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment
Keywords: Figurenspiel
Genre: h#
Computer test: Popeye C-Version 3.37 (403 KB)
Reprints: 78 200 Ausgewählte Schachaufgaben 1983
Input: hpr, 1996-12-25
Last update: Alfred Pfeiffer, 2017-9-6 more...
71 - P0506917
Michel Caillaud
Jacques Rotenberg

(IX) Rex Multiplex 10-12/1983
P0506917
(3+7) C+
h#3
1. Dg8 g7 2. Sg6 h8=D+ 3. Dh7 g8=S#
play all play one stop play next play all
Jacques Rotenberg: Total Umnov (2004-6-20)
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (g8, g7, g6, h8, h7) have at least once the Umnov on it.
Cyclic exchange of place between the diagram and the position before the mate. (2017-10-8)
comment
Keywords: Clearance
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: hpr, 1997-1-22
Last update: hpr, 1999-1-16 more...
72 - P0506918
Jacques Rotenberg
Jean-Marc Loustau

(XIX) Rex Multiplex 10-12/1983
P0506918
(6+9) C+
h#3
1. Lh3+ g4 2. Lg2 Sh3+ 3. Lg1 Sf2#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (h3, g4, g2, g1, f2) have at least once the Umnov on it.
twice bicoloured exchange of places between initial and final position. (2017-10-8)
comment
Keywords: Clearance
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: hpr, 1997-1-22
Last update: hpr, 1999-1-16 more...
73 - P0506919
Jean-Marc Loustau
Jacques Rotenberg

(IV) Rex Multiplex 10-12/1983
P0506919
(3+13) C+
h#3
* 1. ... Txg3 2. Lg2 Sxf3 3. Lh3 Se1#
1. Se1 Sf3 2. Lh4 Tg3 3. Sg2 Se1#
play all play one stop play next play all
Jean-Marc Loustau: Must be mentionned the set play:
1... Rxg3 2.Bg2 Sxf3 3.Bh3 Se1# (with exchange of white moves).
Moreover, Pg6 is without use (improvement published in Phenix 2003) (2004-3-24)
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (f3, e1, h4, g3, g2) have at least once the Umnov on it.
Cyclic exchange of place between the diagram and the position before the mate (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
74 - P0506920
Jean-Marc Loustau
Jacques Rotenberg

(III) Rex Multiplex 10-12/1983
P0506920
(7+12) C+
h#3
1. Sg5 Sf3 2. h2 Th3 3. Sh7 Sg5#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (g5, f3, h2, h3, h7) have at least once the Umnov on it.
Cyclic exchange of place between the diagram and the position before the mate (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
75 - P0506921
Jean-Marc Loustau
Jacques Rotenberg

(XII) Rex Multiplex 10-12/1983
P0506921
(7+10) C+
h#3
1. exf2 Se3 2. f1=L Lf2 3. Tg3 Sg4#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (f2, e3, f1, g3, g4) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
76 - P0506926
Jean-Marc Loustau
Jacques Rotenberg

4209 Themes-64 10-12/1983
P0506926
(3+12) C+
h#3
1. Tg6 Lg7 2. Tf6 Lg6 3. h5 Lh6#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (g6, g7, f6, h5, h6) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
77 - P0506928
Jacques Rotenberg
Jean-Marc Loustau

(VI) Rex Multiplex 10-12/1983
P0506928
(4+11) C+
h#3
1. Td4 Td5 2. e5 Le6 3. Tg4 Td4#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (d4, d5, e5, e6, g4) have at least once the Umnov on it.
Cyclic exchange of place between the diagram and the position before the mate.
Withdrawal move by the black rook. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
78 - P0506929
Jean-Marc Loustau
Michel Caillaud
Jacques Rotenberg

(I) Rex Multiplex 10-12/1983
P0506929
(5+8) C+
h#3
1. cxd5 Lc6 2. Tb5 Lc5 3. d4 Ld5#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (d5, c6, b5, c5, d4) have at least once the Umnov on it.
Cyclic exchange of place between the diagram and the position before the mate (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
79 - P0506930
Michel Caillaud
Jacques Rotenberg
Jean-Marc Loustau

(XI) Rex Multiplex 10-12/1983
P0506930
(7+16) C+
h#3
1. Sd2 Le4 2. Sf3 Td2 3. d4 Ld5#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (d2, e4, f3, d4, d5) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
80 - P0506931
Jacques Rotenberg
Michel Caillaud
Jean-Marc Loustau

(X) Rex Multiplex 10-12/1983
P0506931
(4+8) C+
h#3
1. Df4 Se4 2. Dg5 Sf4 3. d5 Sd6#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (f4, e4, g5, d5, d6) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
81 - P0506932
Jean-Marc Loustau
Michel Caillaud
Jacques Rotenberg

(XIII) Rex Multiplex 10-12/1983
P0506932
(8+14) C+
h#3
1. Se3 Ld1 2. Sc2 Le3+ 3. Sf4 Le2#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (e3, d1, c2, f4, e2) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
82 - P0506933
Jacques Rotenberg
Michel Caillaud
Jean-Marc Loustau

4439 Themes-64 04-06/1985
P0506933
(5+8) C+
h#3
1. Dd5 Se5 2. Dc6 Sd5 3. c3 Sc4#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (d5, e5, c6, c3, c4) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
83 - P0506934
Michel Caillaud
Jacques Rotenberg

(XIV) Rex Multiplex 10-12/1983
P0506934
(5+13) C+
h#3
1. Shf4 Th3 2. Sh5 f4+ 3. Sf2 Td3#
play all play one stop play next play all
Jacques Rotenberg: .
"closed sequence of Umnov" meaning that all the squares involved (f4, h3, h5, f2, d3) have at least once the Umnov on it. (2017-10-27)
comment
Keywords: Clearance
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-1-22
Last update: Alfred Pfeiffer, 2017-10-27 more...
84 - P0507474
Jacques Rotenberg
3204 Themes-64 07-09/1977
P0507474
(4+3) C+
h#3
2.1...
1) 1. Td2 Lh2 2. Tf4 Lf3+ 3. Ke3 Lg1#
2) 1. Td5 Lh3 2. Tfd3 e3 3. Tf5 Lg2#
play all play one stop play next play all
more ...
comment
Keywords: Chameleonecho
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1997-5-19
Last update: Alfred Pfeiffer, 2017-10-27 more...
85 - P0507692
Tivadar Kardos
Dezsö Elekes

2058v Arbejder-Skak 12/1948
1. Preis
P0507692
(6+16) C+
h#4
1. Shxf7 h8=D 2. Tb1 Dh7 3. Tb3 Dd3 4. cxd3 cxb3#
play all play one stop play next play all
more ...
comment
Keywords: Sacrifice of white pieces
Genre: h#
Computer test: C+ PY V4.45.--- (2008-5-22)
Reprints: 107 200 Ausgewählte Schachaufgaben 1983
Input: hpr, 1997-5-19
Last update: Alfred Pfeiffer, 2017-9-6 more...
86 - P0508273
Tivadar Kardos
422 L'Echiquier de France 11/1957
2. Preis ex aequo
P0508273
(5+9) C+
h#2*
* 1. ... gxh8=D 2. bxa1=T Df8#
1. bxa1=L gxh8=S 2. Lg7 Sf7#
play all play one stop play next play all
t/Allumwandlung, u/61112, u/DStl
Sally: Orgineller Umwandlungswecsel!
84, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment
Keywords: Allumwandlung, Sacrifice of white pieces, Promotion
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 4408 FEENSCHACH 363 07-08/1959
84 200 Ausgewählte Schachaufgaben 1983
Input: Erich Bartel, 1997-5-23
Last update: Alfred Pfeiffer, 2017-9-6 more...
87 - P0508645
Tivadar Kardos
(19) feenschach 102, p. 180, 12/1991
1. ehrende Erwähnung
Richter: Norbert Geissler
P0508645
(4+3) C+
h#2
b) sKh4 nach h1
a) 1. f1=S h8=L 2. Sg3 Lf6#
b) 1. f1=T h8=D 2. Tg1 Dxh3#
play all play one stop play next play all
t/Allumwandlung, u/61114, u/DLts, t/Kindergarten
(tatsächlich erschienen V 1993!!)
more ...
comment
Keywords: Allumwandlung, Kindergarten Problem
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: r329 Mirador 11/2001
Input: Erich Bartel, 1997-5-23
Last update: Alfred Pfeiffer, 2017-9-6 more...
88 - P0509288
Tivadar Kardos
1872v Springaren 03/1953
1. Preis
P0509288
(2+14) C+
h#6
1. h1=D+ Lf1 2. Dc6 Lg2 3. Dc7 Lf3 4. e1=D+ Ld1 5. De4 Lxc2 6. Dec6 Lf5#
play all play one stop play next play all
Umwandlung!Dame!2-fach
Sally: Läuferminimal mit Dame-Umwandlung und interessantem Läuferspiel.
128, 200 Schachaufgaben [T. Kardos] 1983. (2017-9-6)
more ...
comment
Keywords: Check Protection, Promotion
Genre: h#
Computer test: Popeye 4.61
Reprints: 128 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1997-6-27
Last update: Alfred Pfeiffer, 2017-9-7 more...
89 - P0509401
Laszlo Apro
Tivadar Kardos

417 problem 08/1953
1. Preis
P0509401
(3+15) C+
h#6
1. Lf4 Kg4 2. Le3+ Kxf3 3. Td3 Ke2 4. Ld2+ Kd1 5. Lc3+ Kc2 6. Tc4 a3#
play all play one stop play next play all
Sally: Schwarz sperrt 5 mal eigene Linie.
127, 200 Ausgewählte Schachaufgaben [ T. Kardos] 1983. (2017-9-6)
comment
Keywords: Check Protection
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 127 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1997-6-28
Last update: Alfred Pfeiffer, 2017-9-7 more...
90 - P0516701
Tivadar Kardos
1197 FEENSCHACH 04/1952
Lob
3. Thematurnier
P0516701
(2+5) C+
h#6
1. a1=D Kb7 2. Dh8 Kxb6 3. Dh1 Kc5 4. c1=D+ Kd4 5. Dc7 Ke3 6. Dh2 Ke2#
play all play one stop play next play all
Verstellung KL
Sally: Zwei schwarze Bauern wandeln sich in Damen um und blockieren Felder um den s. König herum. Sparsam dargesellt.
191 Die Schwalbe Oktober 2001, p. 247. (2017-9-6)
more ...
comment
Keywords: Verstellung
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Reprints: 11) Jugendschach 38 22/07/1983
197 Ungarische Schachprobleme mit wenigen St 1985
II) Die Schwalbe 191, p. 247, 10/2001
Input: Gerd Wilts, 1997-7-21
Last update: Alfred Pfeiffer, 2017-9-6 more...
91 - P0518217
Jozsef Bajtay
Tivadar Kardos

3143 Springaren 08/1955
P0518217
(8+13) C+
h#2
2.1...
1) 1. 0-0-0 Txh8 2. bxa3 Lxe6#
2) 1. 0-0 Txa8 2. fxe5 Lxe6#
play all play one stop play next play all
Sally: Lange und Kurze Rochade im Schlüsselzun, sowie 2 mal Lxe6# im Mattzug-
82. 200 Ausgewählte Schachaufgaben[T. Kardos] 1983. (2017-9-6)
comment
Keywords: Sacrifice of white pieces, Castling (sksg), Tempospiel (b b)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: 82 200 Ausgewählte Schachaufgaben 1983
Input: Hans-Jürgen Schäfer, 1997-10-11
Last update: Alfred Pfeiffer, 2017-9-6 more...
92 - P0519034
Petko A. Petkow
20 Shakhmatna Misl 02/1977
2. Preis
P0519034
(6+6) C+
h#2
2.1...
1) 1. Sh4 Sf5 2. gxf5 Le5#
2) 1. g5 Lf4 2. gxf4 Sf7#
play all play one stop play next play all
Sally: Wie selbst komplizierte Strategie i hilfsmatt hochelegant präsentiert werden kann , zeigt diese Aufgabe. Das Fluchtfeld g2 und die gefesselte w. Dame verraten zumindest dem routinierten löser bald, dass die "g" Lionie geöffnet, somit also ein w. Srein gepopfert weden muß. Damit ist die Lösung :
1. Bg5! - Lf4, 2. gxf4 - Sf7#. keine Hexerei
Die 2. Lösung ist etwas schwieriger, weil jetzt bis auf den s. Bauern g6 alle Akteure andere Rollen übernehmen :
1. Sh4 - Sf5, 2. gxdf5 - Le5#.
die Springer-Fesselung wird auf die "h" Linie verlegt, das Abzugsmatt mit Verstellung der s. Dame gibt jetzt die Turm-Läufer-Batterie. (2017-9-19)
comment
Keywords: Fesselungsspiel (222 202 000), Sacrifice of white pieces
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
Input: Hans-Jürgen Schäfer, 1997-10-11
Last update: hpr, 2001-1-27 more...
93 - P0519647
Tivadar Kardos
687 Raketa 22/12/1942
P0519647
(9+11) C+
h#2*
* 1. ... Txg2#
1. fxg4 Sd2 2. Kxg3 Se4#
play all play one stop play next play all
more ...
comment
Keywords: Sacrifice of white pieces
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 65 200 Ausgewählte Schachaufgaben 1983
Input: Hans-Jürgen Schäfer, 1997-10-11
Last update: Alfred Pfeiffer, 2017-9-7 more...
94 - P0521611
Jozsef Bajtay
Tivadar Kardos

Themes-64 1964
P0521611
(5+7) C+
h#2
5.1...
1) 1. Tg5 Le7 2. Tf5 Te4#
2) 1. Sc7 Tb4 2. Kd6 Te4#
3) 1. Lb7 Te4+ 2. Kd5 Lxb7#
4) 1. Dg4 e7 2. Ke6 e8=D#
5) 1. Sf7 Tf6 2. Sd6 Lb2#
play all play one stop play next play all
Sally: 89, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment

Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: 89 200 Ausgewählte Schachaufgaben 1983
Input: hpr, 1998-1-29
Last update: Alfred Pfeiffer, 2017-9-6 more...
95 - P0521674
Tivadar Kardos
470 problem 12/1953
3. Preis
Richter: Bror Larsson
P0521674
(3+11) C+
h#5
1. h1=L d4 2. Lc6 d5 3. Le8 d6 4. Lf7 d7 5. Ke7 d8=D#
play all play one stop play next play all
Excelsior W

Paradoxerweise wandelt der d-Bauer um und nicht der bereits auf der 7.Reihe stehende c-Bauer.\eb
Sally: Das Matt, weches unmittelbar vor der Umwandlung stehende c-Bauer nicht gelingt, schafft der d2-Bauer im Exzelsior-Marsch.
121, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
more ...
comment
Keywords: Excelsior, white (auto key), Promotion, under-promotion (l)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: Themes-64 3 07/1956
121 200 Ausgewählte Schachaufgaben 1983
(36) harmonie 51 09/1997
Input: hpr, 1998-2-1
Last update: Alfred Pfeiffer, 2017-9-7 more...
96 - P0522165
Tivadar Kardos
1956 Springaren 01/1953
2. Preis
P0522165
(8+13) C+
h#4*
* 1. ... Lb4#
1. Txg2 Kxg2 2. h1=T Kf3 3. Th2 Kg4 4. Tb2 Lb4#
play all play one stop play next play all
Sally: Schwarz opfert den Turm, um dem w König einen Ausweg zu sichern. Der Umwandlungsturm wird nach "b2" gebracht. Die Satzmattstellung wird wieder hergestellt.
115, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment
Keywords: Reihen-Echo, Tempospiel (K), under-promotion (t)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 115 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2017-9-7 more...
97 - P0522247
Tivadar Kardos
Polnischer Problem-Bund 1951
Turnier IV 1950-51
1. ehrende Erwähnung
P0522247
(9+12) C+
h#2*
* 1. ... Sa4 2. bxa4 Th5#
1. Dxa1 Sa4 2. bxa4 Th5#
play all play one stop play next play all
Aufgestockt vom 1. Lob (Szachy, 07/1951)
Sally: Thematurnier des Polnischen Problembundes, 1950/51;
1.Ehrend Erwähnung (Version).
Unter den vielen s. Zugmöglichkeiten ist dieser sonderbarer Tempozug der Schlüssel.
71, 200 Ausgewählte Schachaufgaben [T. Kardos] 1983. (2017-9-6)
comment
Keywords: Sacrifice of white pieces, Tempospiel (d)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 754 Szachy 05/1951
71 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1998-2-10
Last update: Marcin Banaszek, 2017-9-11 more...
98 - P0522591
Tivadar Kardos
900v Magyar Sakkelet 11/1952
1. Preis
BTSB Thematurnier
P0522591
(9+8) C+
h#2
1. Sxe6 Dg8 2. Sf2 Db8#
play all play one stop play next play all
Sally: Turnier des Budapester Ausschussesfür Körperkultur und Sport.
Nov. 1952, 1. Preis.
Schwarz verfügt im 2. Zug für sein Springerpaar über 16 Tempozüge, aber nur einer führt zur Lösung!
73, 200 Ausgewählte Schachaufgaben [ t. Kardos] 1983. (2017-9-6)
comment
Keywords: Tempospiel (s)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: 1277 FIDE Album 1945-1955 1964
73 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2017-9-7 more...
99 - P0522795
Tivadar Kardos
British Chess Problem Society 1948
1. ehrende Erwähnung Turnier Nr. 66
P0522795
(10+9) C+
h#3*
* 1. ... Sxa7#
1. Lc8 Sd6 2. Lb7 axb7 3. a6 b8=S#
play all play one stop play next play all
more ...
comment
Keywords: Tempospiel (b), under-promotion (S)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: Sjakk-Nytt 06/1948
95 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2017-9-7 more...
100 - P0522894
Tivadar Kardos
1612 FEENSCHACH 11-12/1952
1. Preis
P0522894
(10+13) C+
h#3
1. Txb5 Sa5 2. Txg2 Sc6 3. Da5 Sxe7#
play all play one stop play next play all
Sally: Feenschach 1952, 1. Preis.
Tempozügen von 3! schwarzen Figuren.
102, 200 Ausgewählte Schachaufgaben [T.Kardos] 1983. (2017-9-7)
comment
Keywords: Tempospiel (ttd)
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
Reprints: 102 200 Ausgewählte Schachaufgaben 1983
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2017-9-7 more...
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