1426 problem(s) found in 1437 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20190123]

1 - P0000236
Karlheinz Bachmann
7437 Die Schwalbe 130 08/1991
P0000236
(3+1) cooked
BP in 16,0
Zeroposition
a) Kf8 nach g8
b) Lg5 nach g2
a) 1. Sf3 e5 2. Sxe5 Df6 3. Sxd7 Dxb2 4. Sxf8 Dxb1 5. Sxh7 Txh7 6. Txb1 Txh2 7. Txb7 Txg2 8. Txa7 Txf2 9. Txc7 Txf1+ 10. Txf1 Txa2 11. Tfxf7 Txc2 12. Txc8+ Kxf7 13. Txb8 Txd2 14. Txg8 Txd1+ 15. Kxd1 g5 16. Lxg5 Kxg8
b) 1. Sc3 d5 2. Sxd5 Dd6 3. Sxe7 Dxh2 4. Sxc8 Dxg1 5. Sxa7 Txa7 6. Txh7 Txa2 7. Txh8 Txa1 8. Txg8 Txc1 9. Txg7 Txc2 10. Txf7 Txb2 11. Txc7 Txd2 12. Txb7 Txd1+ 13. Kxd1 Dxf2 14. Txb8+ Ke7 15. Txf8 Dxg2 16. Lxg2 Kxf8
play all play one stop play next play all
Cook: NL
b) 1. Sb1-c3 b7-b5 2. Sc3xb5 c7-c6 3. Sb5xa7 Dd8-c7 4. Sa7xc8 Ta8xa2 5. Sc8xe7 Ta2xa1 6. Se7xc6 Ta1xc1 7. Sc6xb8 Tc1xc2 8. Sb8xd7 Dc7xh2 9. Sd7xf8 Dh2xg1 10. Th1xh7 Tc2xb2 11. Th7xh8 Tb2xd2 12. Th8xg8 Td2xd1+ 13. Ke1xd1 Dg1xf2 14. Tg8xg7 Df2xg2 15. Tg7xf7 Ke8xf7 16. Lf1xg2 Kf7xf8 (Mario Richter)
paul: a) is Jacobi+ (2019-2-23)
more ...
comment
Keywords: Unique Proof Game, Massacre PG, Rex solus (s)
Genre: Retro
Reprints: 119 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-4-25 more...
2 - P0000407
Günter Glaß
4360 Die Schwalbe 81 06/1983
5. Lob
P0000407
(7+9)
Weiß nimmt 1 Zug zurück, so daß Weiß und Schwarz #1
Circe
Duplex
w) R: 1. Kh6xBg5[+sBg7], dann Sf7#
bzw. R: 1. Kh6xBg5[+sBg7], dann 1. Lb5#

s) R: 1. ... Kd3xBc4[+wBc2], dann 1. ... Dgd4#
bzw. R: 1. ... Kd3xBc4[+wBc2], dann 1. Dbg2#
play all play one stop play next play all
HBae: R: 1. ... Kh6xBg5[+sBg7], dann 1. Lb5# bzw. 1. Sf7#
R: 1. ... Kd3xBc4[+wBc2], dann 1. Dgd4# bzw. 1. Dbg2# (2019-2-4)
comment
Keywords: Circe, Help retractor
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-4 more...
3 - P0000434
Hans Gruber
4700 Die Schwalbe 86 04/1984
2.-3. Lob e.a.
P0000434
(1+1)
Ergänze einen sS und 2 sBB zu einem IC!
Längstzüger
(+sBf7,sBg6,sSh8)
play all play one stop play next play all
Nicht +sSh1, sBf2, sBg3

Duplicate Diagram: P1187718, P1347424

Henrik Juel: The solution position is illegal, because Sh8-g6 is longer than g7-g6 and h7xg6, so these pawn moves could not happen
The try position is legal with a promoted Sh1 (2019-2-14)
comment
Keywords: Illegal cluster, Maximummer, only Kings
Genre: Retro, Fairies
Reprints: 110 Die Schwalbe 244, p. 582, 08/2010
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-15 more...
4 - P0000549
Hans Gruber
René Jean Millour

3464 Die Schwalbe 68 04/1981
P0000549
(1+1)
Ergänze weiße Steine minimaler Gesamtqualität zu einem IC
Keine Bauern auf der 1./8. Reihe
Mars-Circe
+wBe2,wBg2
play all play one stop play next play all
Die Lösung des ursprünglichen Alleinautors HG (+wBe2 f2 g2) ist nicht die Lösung, da die Stellung nach Entfernen des wBf2 immer noch illegal ist. Die Lösung von RJM, der damit auf Wunsch von HG zum Koautor wurde (+ wBe2 g2), ist aber auch nicht richtig: NL +wB auf 1. oder 8. Reihe. Dies muß also ausgeschlossen werden.
Henrik Juel: With the additional condition ruling out solutions like +wPa1, the problem now seems correct
Adding wPe2,g2 gives an illegal position, as [Lf1] could not have been captured on f1 in Mars Circe (2019-2-14)
more ...
comment
Keywords: Circe (Mars), Illegal cluster, only Kings
Genre: Retro, Fairies
Reprints: G) Problemkiste (50) 08/1987
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-15 more...
5 - P0000726
Hans Gruber
2873 Die Schwalbe 58 08/1979
P0000726
(3+5) C+
ser-h#19
Wieviele Lösungen?
Eine Lösung ist: 1. e5 2. f5 3. f4 4. f3 5. f2 6. f1=L 7. Ld3 8. g5 9. g4 10. g3 11. g2 12. g1=D 13. De3 14. h5 15. h4 16. h3 17. h2 18. h1=D 19. Dhe4 c3#
play all play one stop play next play all
911,797,992 Lösungen
Basically there are 1,6,6,6 moves, and choices of promotion to D/L in 2 cases. The difficulty is in managing the collisions on f2,f3&g2. The best way is probably consider in turn which pawn has priority to pass through the square. This partitions the solution set into 2^3=8 cases.
A.Buchanan: I see that the term "Pawn Endgame" is now the English translation of "Kindergarten Problem". To me, an endgame is a study. Does "Kindergarten Problem" carry that connotation in German, or does it refer more to general compositions such as this one? (2019-2-2)
Mario Richter: The latter is the case, we even have some famous Kindergarten Problems in the Retro genre (think e.g. of some of Thierry LeGleuher's works). "Kindergarten" refers to the fact that besides the two kings only "children" (aka pawns) are on the board.
So I do not understand the choice of "Pawn Endgame" as the english translation, even less because the english language has a word like "kindergarden" ... (2019-2-2)
A.Buchanan: Rainer Staudte has recently changed it. Out of respect, I don't want to unilaterally change it back but would like to hear his perspective. Apparently even in English, Kindergarten is the more common spelling. (2019-2-2)
more ...
comment
Keywords: Path enumeration, Series mover, Promotion in forward play, Kindergarten Problem, Excelsior
Genre: Mathematics, Fairies
Computer test: Mario Richter: rawbats' output: 911797992 Loesungen gefunden time= 1.535000(s) (2019-2-2)
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-3 more...
6 - P0000811
Tibor Orban
1791 Die Schwalbe 38 04/1976
Lob
P0000811
(15+15) C+
BP in genau 4,0
1. e4 e6 2. Lb5 Ke7 3. Lxd7 c6 4. Le8 Kxe8
play all play one stop play next play all
Mark Thornton: In January 2011, a fictional Hungarian detective named "Tibor Orban" appeared in the BBC crime drama "Silent Witness". Tibor Orban was played by the actor Ivan Kamaras (http://en.wikipedia.org/wiki/Iv%C3%A1n_Kamar%C3%A1s). (2012-7-21)
Dirk Borst: The word "genau" can and should be removed. "BP in 4,0" historically and logically means: "Position after the 4th black move; how did the gane go?" So a shorter game cannot be a cook, by definition. (2019-4-18)
Henrik Juel: I disagree, Dirk
Usually the composer asks for a shortest proof game; the 'genau' addition is a handy way of emphasizing the few exceptions, like this one
1.e4 e6/c6 2.Lc4/Lb5 c6/e6 3.Lxe6/Lxc6 dxe6/dxc6 are two of the four shortest proof games without loss of tempo (2019-4-18)
Per Olin: The solution is unique also in 4.5 moves: 1.e3 e6 2.Lb5 Ke7 3.Lxd7 c6 4.Le8 Kxe8 5.e4 (2019-4-19)
comment
Keywords: Unique Proof Game, Switchback, Loss of tempo
Genre: Retro
Computer test: Resolution time : 1.21 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: 32 Probleme für Tiger 3 03/1984
(I) Schachkalender 1987
7 Shortest Proof Games 11/1991
(3) feenschach 123 01-06/1997
(1) Probleemblad 03/1999
4 Introduction to Proof Games 03/2010
4b 64 Proof Games 2012
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2013-4-20 more...
7 - P0001884
Thomas R. Dawson
Aachener Anzeiger 1926
P0001884
(8+2)
#1 vor 2
VRZ, Typ Hoeg
R: 1. c7-c8=D Lb4xSa3 2. Sc5-a6, dann 1. Sb3#
R: 1. c7-c8=D Lc5xSa3 2. Sb4-a6, dann 1. Sc2#
play all play one stop play next play all
klären: Quelle: Schach ohne Grenzen, S.35, Nr.3 = Magyar Sakkvilag, 1926 (VF)
Henrik Juel: -1.Q=c7 Bb4:S -2.Sc5, 1.Sb3#; -1.. Bc5:S -2.Sb4, 1.4Sc2#. It is illegal to supplement a checking bS on a6. (2003-10-9)
Sally: Weiß nimmt c7-c8D zurück. Nimmt Schwarz Lb4-a3 zurück, so ergänzt Weiß auf a3 einen Springer und nimmt Sc5-a6 zurück, um durch Sb3#. Nimmt Schwarz Lc5-a3 zurück, so ergänzt Weiß auf a3 wieder einen Springer und nimmt Sb4-a6 zurück, um durch Sc2 mattzusetzen. (2012-2-21)
Henrik Juel: Also 'On Retraction Chess Problems' gives Magyar Sakkvilag as original source (2019-2-10)
comment
Keywords: Promotion, Defensive Retractor, Defensive Retractor, Type Høeg
Genre: Retro
Reprints: 127 Magyar Sakkvilag 04/1926
(31) On Retraction Chess Problems 1927
3 Chess unlimited , p. 35, 1969
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-12 more...
8 - P0002661
Henry Tanner
5094 Thema Danicum 07/1991
P0002661
(1+1)
Ergänze sT, sL und sS zu einem IC!
3 Lösungen
a) +sTb4+sLc4+sSb3
b) +sTc2+sLb3+sSc4
c) +sTd1+sLb1+sSc3
play all play one stop play next play all
Henrik Juel: The solutions feature impossible check by T, L, and S (2019-2-14)
comment
Keywords: Illegal cluster, no 8x8 board, Aristocrat
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-18 more...
9 - P0002678
Hans Gruber
18) feenschach 45, p. 37, 01-03/1979
P0002678
(1+1)
Ergänze 1 wB zu einem IC!
Wieviele Lösungen?
Gitterschach
b) +Ohneschlag

a) 20 Lösungen: a1, ..., h1, a8, ..., h8, c2, e2, a6, h6
b) 34 Lösungen: a1, ..., h1, a8, ..., h8, c2, e2, a6, ..., h6, a7, ..., h7
Henrik Juel: In Grid Chess a white pawn cannot reach a6 (nor h6), as a5-a6 and b5xa6 are impossible
With No-capture Chess added as extra condition a white pawn can reach no higher than row 5 (2019-2-14)
more ...
comment
Keywords: Illegal cluster, No-capture chess, Grid Chess, only Kings
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2015-3-20 more...
10 - P0002730
Maryan Kerhuel
991 Phénix 14 09/1991
Michel Caillaud gewidmet
P0002730
(1+3)
Ergänze wD, wL, 3 wBB, sT und 2 sBB zu einem IC!
Patrouilleschach
(+wDb7,wLc6,wBb6d5d7,sTd6,sBb5e7) R: 1. Dc7xb7, aber keine Auflösung
play all play one stop play next play all
Henrik Juel: The stipulation and solution are inconsistent
Assuming that 2 wBB is changed to 2 sBB, I cannot see how the solution position without Td6 could be legal
-1.Dc7xSb7+ Sd6xSb7 is not possible, as sSd6 checks wK (2019-2-14)
comment
Keywords: Illegal cluster, Patrol Chess, Kindergarten Problem, Rex solus (w)
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-15 more...
11 - P0003049
Raymond Smullyan
The Chess Mysteries of the Arabian Knights , p. xii, 1981
P0003049
(14+15)
Ein sL hat einen weißen Stein geschlagen. Welcher sL?

Der sLe5 hat den wL geschlagen.
H.Juel: The capture sequence must have been g7xSh6 before d2xTc3 before Lx[Lc1]
more ...
comment

Genre: Retro
Reprints: Die Schachgeheimnisse des Kalifen , p. 10, 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
12 - P0003050
Raymond Smullyan
The Chess Mysteries of the Arabian Knights , p. xiii, 1981
P0003050
(5+1)
In welche Richtung spielt Weiß?
Im letzten Zug wurde kein Stein geschlagen.
R: 1. Td2-f2 Kf2-f1 2. Be2xXd1=S+
play all play one stop play next play all
Weiß spielt von oben nach unten!
Henrik Juel: The stated retroplay is the only possibility
so White pawns move downwards (2019-1-23)
comment
Keywords: Conditional problem, Aristocrat, Rex solus (s)
Genre: Retro
Reprints: Die Schachgeheimnisse des Kalifen , p. 12, 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
13 - P0003053
Raymond Smullyan
3a The Chess Mysteries of the Arabian Knights 1981
P0003053
(12+11)
Ersetze einen der Steine durch den wK, so daß die Stellung legal ist!
Henrik Juel: Solution
0. Replacing wK on g8, h7, or h8 obviously does not work; neither does a4, a6, a7, b5, b7, b8, c4, c6, d7, f7, or g6, having both kings in check
1. What about replacing the white man on d5, e4, g4, or h5? This gives four missing white men, three of which were captured on light squares by b7xa6 and d7xc6xb5, while the fourth, [Lc1], was captured on a dark one
Hence the retroplay -1.Df8xYg8 Yxg8 does not work, because g8 is light, nor does -1.Df8xSg8 Sf6 -2.Dh6, because Sf6 would check wK (on d5, e4, g4, or h5)
(-1... Kg7 is illegal, and no other black men can retract)
2. Replacing a black man on a5, a8, e7, or e8 does not work, because the three missing white men include the dark-squared [Lc1]
3. This leaves the solution: putting wK on c7; now the black pawn play could have been b7xa6 and c7xb6-b5, so many retroplays are possible (after the uncheck -1.Df8xg8) (2019-1-23)
comment
Keywords: Add pieces
Genre: Retro
Reprints: 3a Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
14 - P0003054
Raymond Smullyan
3b The Chess Mysteries of the Arabian Knights 1981
P0003054
(12+10)
Ersetze einen Stein einer anderen Art als in der vorigen Aufgabe 3a durch den wK, so daß die Stellung legal ist!
Henrik Juel: Replacing Pa7 or Pc7 with wK would work, but this is ruled out by Alfred's stipulation clarification: wK may not take the place of a black pawn
Compared to P0003053, Da8 has been removed, but an extra missing black man makes no difference, so the arguments from there still apply
b7 is no longer attacked by Black, however, so the solution is putting wK on b7 (2019-1-23)
Mario Richter: Imho, Alfred's stipulation doesn't rule out Pa7, it should be: "Ersetze einen Stein einer anderen Art als in der vorangegangenen Aufgabe 3a (P0003053) durch dem wK, so daß die Stellung legal ist". This fits the original intention, where the problem is embedded into a story about Caliph Haroun al Rashid (the wK), who wents out one night masquerading as some other piece (=3a), and then again the next night (=3b), quote: "Only on this second night, he costumed himself differently than he had on the first." (2019-1-24)
Henrik Juel: Thanks for your clarification clarification, Mario
At first I thought that a7 was a cook, but then I interpreted Alfred's stipulation more broadly (2019-1-24)
more ...
comment
Keywords: Add pieces
Genre: Retro
Reprints: 3b Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
15 - P0003055
Raymond Smullyan
4 The Chess Mysteries of the Arabian Knights 1981
P0003055
(11+11)
Schwarz ist am Zug. Welcher Stein steht auf g4?
Darf Schwarz rochieren?

Steinkontrolle wegen des 'x' nicht exakt.
Henrik Juel: Solution
Black captured [Lc1] on c1 and played e7xd6xc5xb4xa3-a2xb1=L, capturing all six missing white men, so [Pf7,g7,h7] never captured, and Yg4 is black
Last move was not Te1-d1, so it was 0-0-0, and Y is not L
To let [Th1] out to be captured, [Pg2,h2] crosscaptured, so Lh2 is [Pg7] promoted on g1, and Y is not P
The forward sequence was: g2xh3 before [Th1] got out before g1=L before h2xg3, so there were not any more black promotions, hence the hidden black man is Sg4, and [Pf7,h7] were captured on their files
The white captures were a2xLb3, g2xPh3, and h2xLg3, leaving only [Pf7] who was captured on f2, f3, .. , or f7
[Pe2] must have promoted, either on e8, or on f8 via f7, so Ke8 has moved, and Black may not castle (2019-1-23)
comment

Genre: Retro
Reprints: 4 Die Schachgeheimnisse des Kalifen 1984
R10 Phénix 275-276, p. 10810, 07-08/2017
R10 Phénix 275-276, p. 10815, 07-08/2017
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
16 - P0003058
Raymond Smullyan
7 The Chess Mysteries of the Arabian Knights 1981
P0003058
(12+13)
Der schwarze Damenturm ist von einem Bauern geschlagen worden, der weiße Königsläufer wurde vorgegeben, Die beiden wT sind auf der selben Reihe geschlagen worden. Schwarz kann noch rochieren.
Wo wurden die wTT geschlagen?
Henrik Juel: Too many conditions for my taste
Alfred's addition shows that Ke8 (and Th8) never moved
The only white pawn capture was f2xe3, i.e., f2xTe3, so [Pb7,c7] cross-captured to let [Ta8] out
At first, only [Lc1] could get out, so the first black pawn capture was c7xLb6
But [Lc8] was in the way for [Ta8], so it was captured on c8, and La6 is a pawn promoted on f1
g2-g3 happened early to let promoted Lf1 reach a6, so Sf1 is also a promoted pawn
Hence Black captured gxf, and since the white rooks fell on the same row, they were captured on c6 an f6 (2019-1-24)
Henrik Juel: Alfred's addition was
Schwarz kann noch rochieren. (2019-1-24)
more ...
comment
Keywords: Conditional problem, Odds game
Genre: Retro
Reprints: 7 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
17 - P0003059
Raymond Smullyan
8 The Chess Mysteries of the Arabian Knights 1981
P0003059
(13+13+1)
Schwarz hat soeben rochiert und es sind keine weißen Umwandlungsfiguren auf dem Brett.
Ist der Ta5 weiß oder schwarz?

Ta5 is black
Henrik Juel: First some observations
Black has captured b7xa6 and played g3xh2-h1=L (other ways to promote [Pg7] on a light square need to many captures)
Assume that Ta5 is white
Then the black captures were b7xYa6 (Y is [Pe2] promoted) and g3xLh2
La2 cannot be promoted, because White must play b2-b3 before [Lc1] can reach h2 to enable the black promotion
Lb7 also cannot be promoted, because Black must play c7-c6 before [Dd8] can get out to enable [Pe2] to promote on g8
So Ta5 is black
(Then one of the two needed black pawn captures could be b7xTa6 or g3xTh2) (2019-1-25)
Henrik Juel: For a slightly clearer argument, please replace
'Lb7 also cannot be promoted'
with
La2 also cannot be the original [Lc8] (2019-1-25)
Mario Richter: My first attempt was: +wTa5, then R: 1. ... Lc8-b7 2. ~ b7xSa6 3. Sb8-a6 ~ 4. c7xTb8=S ~ 5. d6xDc7 ~ 6. e5xLd6, before I realized that afterwards it is not possible to unpromote sLa2 ... (2019-1-26)
Alfred Pfeiffer: For the sLL both is possible, each of them can be the original or the promoted piece. Beside the above discussed solution White could play first wTa1 to a6. After bxa6 Black could move its Ta8 to a5 and play its Lc8 to a2. Then White plays b2-b3 and the wLc1 to h2. After the promotion of sBg7 at h1 the promoted bishop could move to b7. Then Black moves c7-c6. In this case there is no need to promote the wBe2. It could be captured somewhere, the sDd8 also. (2019-1-26)
more ...
comment
Keywords: Non-standard material (l)
Genre: Retro
Reprints: 8 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
18 - P0003061
Raymond Smullyan
10 The Chess Mysteries of the Arabian Knights 1981
P0003061
(14+13+1)
Kein Bauer hat bisher mehr als einen Stein geschlagen, die Dh5 ist eine Originaldame. Zeige, daß sich die Farbe der Dh5 bestimmen läßt, wenn bekannt ist, ob die fehlende Dame auf ihrer eigenen Linie geschlagen worden ist!
Henrik Juel: .
If [Dd8] was captured by d2xDc3, Dh5 is white
If not, the capture was d2xTSc3, and Black later played exDd-d1=TS, so Dh5 is black (the sequence was d2xc3 before the promotion before Se3-d1 before e2-e3 before [Lf1] could exit)
Thus, Dh5 is black if the missing D was captured on the d-line, and white otherwise (2019-1-24)
more ...
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 10 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
19 - P0003062
Raymond Smullyan
11 The Chess Mysteries of the Arabian Knights 1981
P0003062
(11+10)
Woher kommt der wBg3?
Henrik Juel: The retroplay was not
-1... Kf6 -2.d5xPe5ep e7 -3.d4
because this would require too many black pawn captures (incl. promotion of Ld8)
So it was -1... Kf6xSg6 -2.Se5
If Pg3 came from f2, too many white pawn captures would be required (incl. promotion to S), so Pg3 came from h2 (2019-1-24)
Henrik Juel: for clarity, please replace the last parenthesis by
(because White must promote to S) (2019-1-24)
comment

Genre: Retro
Reprints: 11 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
20 - P0003063
Raymond Smullyan
12 The Chess Mysteries of the Arabian Knights 1981
P0003063
(13+15)
Weiß darf noch rochieren. Hat sich der sBb7 umgewandelt?
Henrik Juel: Black is missing one man ([Pb7]), so the only white capture was b2xc3, and the obvious explanation of the position is that White captured an original black officer, which was later replaced by promotion
Still, suppose Black did not promote
Then he must have captured a white officer with bxc, and White might promote [Ph2] on h8 after h7xg6 (later Black would have to complete the cross-capture with g7xh6)
In his first pawn capture Black must have captured an original white officer, but we can rule out all five possibilities:
Not S, as a promoted S could not leave h8
Not [Lf1], as it could not be replaced by promotion on h8
Not [Lc1], as it could not get out
Not T, as [Ta1] could not get out, and Th1 never moved
Not D, as Black would have to capture [Lc1] to let her out, and a8=L-h4 would require a total of four black captures
So [Pb7] did promote
(The possibility of White capturing the promoted officer after a2-a3 and b3xTa2-a1=Y will not work, as [Lc1] could not leave the SW corner, and b3xSLa2 are ruled out as above, so the promoted [Pb7] is still on the board) (2019-1-26)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 12 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
21 - P0003064
Raymond Smullyan
13 The Chess Mysteries of the Arabian Knights 1981
P0003064
(14+15)
Beide Könige haben nur je einmal gezogen.
Der sBa7 hat sich umgewandelt; in welche Figur?
Henrik Juel: solution: the promoted pawn is Dd7
Both kings have castled
White castled early to let out [Th1], so Black could capture axTb
To avoid a check on b2, Black must capture again bxTa and promote on a1
Let us consider the possible promotions:
S or L could not move without checking
T could not reach d8,e8
So the promotion was to D (2019-1-26)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 13 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
22 - P0003065
Raymond Smullyan
14 The Chess Mysteries of the Arabian Knights 1981
P0003065
(13+14)
Die schwarze Dame wurde auf ihrer eigenen Reihe und der weiße Damenturm auf seiner Linie geschlagen, keiner der beiden Könige hat gezogen, Schwarz darf rochieren. Was geschah mit dem weißen Bauern h2, der sich umgewandelt hat?
Henrik Juel: Too many conditions for my taste
The move sequence must have been
h7xg6 before h6-h7 before g7xh6 before b2xLa3 before b7xTa6 before h7xDg8=D! (with a screen on f8)
(A promoted S would check on f6 and a promoted L or T could not exit)
So the promoted pawn is Dd1
. (2019-1-26)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 14 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
23 - P0003066
Raymond Smullyan
15 The Chess Mysteries of the Arabian Knights 1981
P0003066
(15+13)
Welcher der beiden wL ist der Originalläufer?
Henrik Juel: solution: La2 is original
[Ta8] was captured in its corner, so White could not promote before g7xf6
Hence the sequence must have been
Lf1-a2 before b2-b3 before g7xLf6 before g8=L-g2
. (2019-1-26)
comment
Keywords: Non-standard material (L)
Genre: Retro
Reprints: 15 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-28 more...
24 - P0003067
Raymond Smullyan
16 The Chess Mysteries of the Arabian Knights 1981
P0003067
(14+13)
Der Th8 ist auf auf seinem Ursprungsfeld geschlagen worden, keiner der beiden KK hat gezogen, auf dem Brett befinden sich keine schwarzen Umwandlungsfiguren. Welches ist der weiße Originalläufer?
Henrik Juel: solution: Lb2 is original
Both h-pawns promoted
The sequences must have been
c2-c3 before c7xDd6 before h6xTg7xTh8=L-h2 before g2-g3
and hxTg before h1=Y before b2xYa3
. (2019-1-26)
Henrik Juel: If [Ta8] was captured on a3, [Ph7] need not promote, and White could just capture [Th8,Ph7] with officers
The result is unchanged (2019-1-26)
comment
Keywords: Conditional problem, Non-standard material (L)
Genre: Retro
Reprints: 16 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
25 - P0003068
Raymond Smullyan
17 The Chess Mysteries of the Arabian Knights 1981
P0003068
(4+4)
Was geschah mit dem weißen Königsläufer?
Henrik Juel: solution: [Lf1] was captured on f1
-1... f4xg4ep -2.g2 f5
. (2019-1-26)
comment
Keywords: Non-standard material (L)
Genre: Retro
Reprints: 17 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-28 more...
26 - P0003069
Raymond Smullyan
18 The Chess Mysteries of the Arabian Knights 1981
P0003069
(11+11)
Welcher weiße Stein wurde vorgegeben?
Henrik Juel: solution: [Lc1]
The retroplay was -1.Dd8xYe8 Yxe8 (-1... b7xa6/c6xb5 are illegal as they would prevent wK from reaching c8), so Black has captured the other missing white men on a light square
. (2019-1-27)
comment
Keywords: Odds game
Genre: Retro
Reprints: 18 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-5 more...
27 - P0003070
Raymond Smullyan
18b The Chess Mysteries of the Arabian Knights 1981
P0003070
(11+11)
Es fanden keine Umwandlungen statt.
Welcher weiße Stein wurde vorgegeben?
Henrik Juel: Seems cooked
As in P0003069 the retroplay shows that Black captured on a6,b5,c6,e8
The captured men must be wTTLS, as no wP could reach any of these squares (White also captured Dd8xe8)
But any one of [Pd2,e2,h2] could have been given as odds (one of Pd7,e6 could be [Ph2]) (2019-1-27)
Mario Richter: Smullyan wrongly argues: "... four White pieces must have been captured (one on e8, and three by the pawns on a6 and b5). The pawn from h2 could certainly not have been captured by either of the two Black pawns, nor could it get to e8 without promoting, which we are given it did not. Hence this pawn must have been given as odds."
As Henrik explained, Smullyan overlooked the simple possibility that wPh2 is still on the board (on d7 or e6).
So the problem is indeed cooked. (2019-1-28)
comment
Keywords: Conditional problem, Odds game
Genre: Retro
Reprints: 18b Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-28 more...
28 - P0003072
Raymond Smullyan
20 The Chess Mysteries of the Arabian Knights 1981
P0003072
(14+14)
Es befinden sich keine UWF auf dem Brett.
Zeige, daß der weiße Königsspringer bereits gezogen hat!
Henrik Juel: .
[Pb7] did not promote, because otherwise it would be on the board
The capture sequence must have been bxTa before b2xPa3
So [Sg1] must have moved to let a wT out
. (2019-1-27)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 20 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-28 more...
29 - P0003073
Raymond Smullyan
21 The Chess Mysteries of the Arabian Knights 1981
P0003073
(13+10)
Einer der beiden weißen Springer hat noch nicht gezogen. Welcher?
Henrik Juel: solution: Sg1
The retroplay was -1.Pc5xPd5ep d7 -2.c4 Ke8, so [Lc8] was captured on c8
The other white captures were b2xc3, e2xd3xc4, fxg, while Black played f7xTg6xPh5, axLb-b1=Y, so Sb1 must have moved
(The problem could have formulated without a condition by asking
Which wS must have moved?)
. (2019-1-27)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 21 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-5 more...
30 - P0003074
Raymond Smullyan
22 The Chess Mysteries of the Arabian Knights 1981
P0003074
(5+12+1)
Schwarz ist am Zug. Ist der Sa1 weiß oder schwarz?
Henrik Juel: solution: Sa1 is white
Last move was Kd1xSd2, so the black knights are accounted for
. (2019-1-27)
comment

Genre: Retro
Reprints: 22 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2019-1-28 more...
31 - P0003075
Raymond Smullyan
23 The Chess Mysteries of the Arabian Knights 1981
P0003075
(12+10)
Ein weißer und ein schwarzer Springer haben die Farbe getauscht. Welche Springer?
Henrik Juel: solution: Sa1 and Sa3
White pawns captured all missing black men, so last move was Sc2-a3+, preceded by b2xa1=S
. (2019-1-27)
more ...
comment

Genre: Retro
Reprints: 23 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-28 more...
32 - P0003083
Raymond Smullyan
30 The Chess Mysteries of the Arabian Knights 1981
P0003083
(12+14)
Eine Figur hat die falsche Farbe. Welche?
Henrik Juel: solution: Lf1
The pawns are true by stipulation (Figur means officer) and the kings are obviously true
[Lc1] was captured on c1, so Lh4 is true and checking Ke1
Hence Sf3 and Dd8,Th8,Sc7,Sf6 are true
Ta8 is true, because a wT could not have left row 1
Dc4 is true, because a black promotion would require four captures, but only wDS and one wT are available
So Lf1 is black, explainable by Black capturing [Lf1] and playing c5xTd4xTe3xSf2=L
. (2019-1-27)
comment

Genre: Retro
Reprints: 30 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
33 - P0003084
Raymond Smullyan
31 The Chess Mysteries of the Arabian Knights 1981
P0003084
(13+11)
Weiß ist am Zug, beide KK haben noch nicht gezogen. Zeige, daß der wLg7 bereits die 8. Reihe betreten hat!
Henrik Juel: .
White captured [Ta8,Lc8,Dd8] with an S in the NW corner, g2xTh3, and [Lf8] somewhere
So Pb3,c3 did not cross-capture, [Ta1] was captured in the SW corner, and Pf5 never captured
Sg8 entered via h6, and last move was f6-f5 (not Sc2-a1 or Sd3-c1), allowing these (forward) sequences:
L-g7 before f7-f6
White captured [Lf8] on f8 before Th8-f8 before Sh6-g8 before g7xDh6 before g2xTh3
So [Th8] went Th8-f8-f7-g7-h3, showing that Lg7 visited h8 or f8 to make way (and that last move was not f7-f5)
(The penultimate move was g2xTh3 or L-e2) (2019-1-29)
Henrik Juel: It may be clearer to reverse the two sequences and rewrite:
g7xDh6 before L-g7 (or L-h8) before f7-f6 before Tf8-f7 (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 31 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
34 - P0003085
Raymond Smullyan
32 The Chess Mysteries of the Arabian Knights 1981
P0003085
(14+13)
Der wK und die wD haben noch nicht gezogen und sind noch nicht angegriffen worden. Was geschah mit dem sBg7?
Henrik Juel: Dd8 is [Pg7] promoted on g1
White captured L or S on b3 and some original black officer (not S) on c3, before [Ta1] could get out to help [Pg7] promote on g1
Promoting to LT does not work, so after d2xDc3 Black played gxT...xLg2-g1=D (with a screen on f1)
. (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 32 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
35 - P0003086
Raymond Smullyan
33 The Chess Mysteries of the Arabian Knights 1981
P0003086
(14+14)
Der sK und die sD haben noch nicht gezogen, Weiß darf noch rochieren. Welches ist der schwarze Königsturm?
Henrik Juel: Ta2
The only feasible sequence is
a2xLb3 before Ta1-f6 before g7xTf6 before Th8-a2 before b2xLa3 before c7xLb6 before Ta8-h3
. (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 33 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
36 - P0003087
Raymond Smullyan
34 The Chess Mysteries of the Arabian Knights 1981
P0003087
(14+13)
Beide Seiten dürfen noch rochieren, die wD ist nie angegriffen worden, die sD nur einmal. Welcher weiße Offizier hat einen illegalen Zug gemacht?
Henrik Juel: Silly problem
Retroanalysis requires legality throughout
Silly answer:
[Ta1] illegally reached e6 early, allowing d7xTe6 and then e.g. d2xDc3
. (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 34 Die Schachgeheimnisse des Kalifen 1984
R11 Phénix 275-276, p. 10810, 07-08/2017
R11 Phénix 275-276, p. 10815, 07-08/2017
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-9 more...
37 - P0003088
Raymond Smullyan
35 The Chess Mysteries of the Arabian Knights 1981
P0003088
(13+16)
Ergänze den weißen Damenläufer, wenn möglich. Wenn nicht: wo wurde er geschlagen?
Henrik Juel: [Lc1] was captured on c1
The sequence must have been
d7xDc6 before Lc8-a2 before b2-b3
. (2019-1-29)
comment
Keywords: Where was piece x captured?
Genre: Retro
Reprints: 35 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
38 - P0003089
Raymond Smullyan
36 The Chess Mysteries of the Arabian Knights 1981
P0003089
(13+15)
Der weiße Damenläufer ist nicht auf seinem Ausgangsfeld geschlagen worden. Ergänze, wenn möglich, den weißen Damenläufer oder zeige, auf welchem Feld er geschlagen worden ist!
Henrik Juel: [Lc1] was captured on b2
[Lc8] could not get out before d7xDc6, so La2 must be promoted: a3xLb2-b1=L
. (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 36 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
39 - P0003090
Raymond Smullyan
37 The Chess Mysteries of the Arabian Knights 1981
P0003090
(13+15)
Die wD wurde auf c6 geschlagen, Weiß darf noch rochieren. Ergänze einen weißen Läufer. Ergänze, wenn möglich, den schwarzen Königsläufer oder zeige, auf welchem Feld dieser geschlagen worden ist!
Henrik Juel: Add wLh8, [Lf8] was captured on h6
[Lc1] was captured on c1, so the added wL must be [Pg2] playing g5xLh6-h8=L
. (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 37 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
40 - P0003091
Raymond Smullyan
38 The Chess Mysteries of the Arabian Knights 1981
P0003091
(12+14)
Weiß hat einen Springer vorgegeben, der wK hat noch nicht gezogen. Nur eine Figur ist auf ihrem Ausgangsfeld geschlagen worden, und dies war nicht die erste Figur, die geschlagen worden ist. Befindet sich der schwarze Damenläufer noch auf dem Brett?
Henrik Juel: Yes
The sequence must have been
c2-c3 before e7xDf6 before Sb3xLc1 before Ta1-c1 before Sa3-b1 before b2xLa3 before b7xTa6
Only then could [Lc8] get out (it was not captured at home, because [Lc1] was), but White cannot have captured it, so it is still on the board somewhere
. (2019-1-29)
comment
Keywords: Conditional problem, Odds game
Genre: Retro
Reprints: 38 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
41 - P0003244
M. Geofth
1022 L'Echiquier de Paris 1954
1. -2. Preis e.a.
P0003244
(5+10) cooked
h#4
b) sBb2 statt wBb2
a) 1. dxe3ep Kd4 2. Tc6 Kd5 3. Dg6 dxe3 4. Kf5 e4#
b) 1. Se3 Lxb2 2. Dg1 Lxd4 3. Dg4 Lxf6 4. Lg3 dxe3#
play all play one stop play next play all
Cook: NL
b) 1. Da2 Lxb2 2. De6 Lxd4 3. h3 Lxf2 4. Ke5 Lg3#
Yuri Bilokin: Correction: bpb2, +bnh5 2.1… b7/8/5p2/7n/3pPknp/3K1p2/1prP1b2/1qB5 (4+12)
1.dxe3 e.p. Kd4 2.Rc6 Kd5 3.Qg6 dxe3+ 4.Kf5 e4#
1.Se3 Bxb2 2.Qg1 Bxd4 3.Qg4 Bxf6 4.Bg3 dxe3# (2019-3-13)
comment
Keywords: En passant as key, Check Protection
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-7-11 more...
42 - P0005374
Stefan Höning
6638 feenschach 111 01-09/1994
P0005374
(2+1)
Ergänze wK, wD, wT, wL, wS, wB; sK, 2sTT, sL zu einem weißen L.C.!
+wKd3,wDd7,wTe4,wLc2,wSc5,wBd2,sKa4,sTd1d8,sLb1
play all play one stop play next play all
FM: "Bemerkenswerte Idee, dieser Semi-Legal Cluster."
3/III
Henrik Juel: The stipulated position is not an ordinary Legal cluster (LC), but an easier variant called a White LC, defined as a legal position that becomes illegal if you remove any one white man (so removing a black man is irrelevant)
The solution position is legal, as last move could be Sb3-c5++
Removing Lc2, Pd2, Dd7, or Te4 puts both kings in check, removing Pb4 or Pb5 gives an illegal triple check, and removing Sc5 gives impossible check from wLc2 (and removing Kd3 obviously gives an illegal position) (2019-2-18)
Henrik Juel: Alfred has waved his magic wand again, so you don't need a board, just click on the little right-arrow, then move the cursor up, and, presto, the diagram shows the solution
I agree with solver FM that this is a clever way to avoid a condition (like Checkless Chess), but the idea hasn't caught on; at least this is the only White LC in the PDB (2019-2-19)
Olaf Jenkner: Good idea: Alfred used a zero-position and the solution as part a) (2019-2-19)
A.Buchanan: Sorry been very busy. One feature still missing from the animation is the ability to return to the zero position. Compare Julia's Fairies animation, where there are *** at the top which you can click on. (2019-2-20)
comment
Keywords: Legal cluster (w)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-18 more...
43 - P0005567
Raymond Smullyan
39 The Chess Mysteries of the Arabian Knights 1981
P0005567
(16+13)
Weiß und Schwarz dürfen noch rochieren. Welcher der 3 wSS muß vom Brett entfernt werden, damit die Stellung legal wird?
-wSg1
play all play one stop play next play all
Henrik Juel: .
The sequence must have been
b2xLc3 before c7xDb6 before g2xDh3 before g1=L
and f2-f3 before Lg1-g7
A wS could not reach g1 after Lg1 had left, so Sg1 must be removed
. (2019-1-29)
comment
Keywords: Conditional problem, Non-standard material, Illegal position, Remove pieces
Genre: Retro
Reprints: 39 Die Schachgeheimnisse des Kalifen 1984
R12 Phénix 275-276, p. 10810, 07-08/2017
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
44 - P0005568
Raymond Smullyan
40 The Chess Mysteries of the Arabian Knights 1981
P0005568
(14+15)
Keiner der KK hat gezogen.
Wo wurde der weiße Königsturm geschlagen?
Henrik Juel: On b6
The sequence must have been
b7xSc6 before g2xTh3 or g3xTh4 before [Th1] could get out
So it was captured on b6
. (2019-1-29)
comment

Genre: Retro
Reprints: 40 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
45 - P0005569
Raymond Smullyan
41a The Chess Mysteries of the Arabian Knights 1981
P0005569
(14+14)
Die KK und die DD haben weder gezogen noch sind sie angegriffen worden. Welcher Offizier muß vom Brett entfernt werden, damit die Stellung legal ist?
Henrik Juel: Lf1
No S was captured by a pawn
The pawn captures were f2xLe3, b7xTc6, g2xTf3, in this order, so Lf1 must be removed
. (2019-1-29)
comment
Keywords: Conditional problem, Remove pieces
Genre: Retro
Reprints: 41a Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
46 - P0005570
Raymond Smullyan
41b The Chess Mysteries of the Arabian Knights 1981
P0005570
(14+14)
Kein König hat je gezogen und keine Dame ist jemals angegriffen worden. Welche Figur muß vom Brett entfernt werden, damit die Stellung legal wird?
Henrik Juel: .
Seems to be unsolvable, as no white man could be captured on c6 to release [Ta8,Lc8]
. (2019-1-29)
Mario Richter: Wrong stipulation. The correct one is:
""This time, neither king has moved, and neither queen has been under attack. Where is the genie [the piece to be removed to make the position legal] now?" (2019-1-30)
A.Buchanan: I suppose sometime we should put English & French translations of these wretchedly long Smullyanesque stipulations. It's the kind of thing that novice visitors might come for. (2019-1-30)
Henrik Juel: With Mario's condition modification:
Remove Lc8, so that Dd8 could step aside to c8, allowing b7xSc6 (2019-1-30)
comment
Keywords: Conditional problem, Remove pieces
Genre: Retro
Reprints: 41b Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
47 - P0005571
Raymond Smullyan
42 The Chess Mysteries of the Arabian Knights 1981
P0005571
(15+13)
Welcher der beiden LLh2 und h4 muß entfernt werden, damit Weiß zwingend in 2 Zügen gewinnen kann?
Henrik Juel: Lh4
Suppose that Black may castle
Then [Ta8] was captured in its corner, leaving a light-squared L and a h-pawn as missing men for White and for Black
d2xc3 and e7xf6 were captures on dark squares, so both missing pawns must have promoted
White could not capture h6xg7 on a dark square, so first Black captured h3xLg2 allowing White to play h2-h7xLg8 later
But then we cannot explain Lh2
So remove Lh4 and play 1.Da6 thr. 2.Dc8#; Black cannot defend, because he may not castle
(The position without Lh4 is clearly legal, because Black need not promote)
. (2019-1-29)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 42 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
48 - P0005572
Raymond Smullyan
43 The Chess Mysteries of the Arabian Knights 1981
P0005572
(13+14)
Die KK und DD haben noch nicht gezogen. Welcher der 4 SS ist in Wirklichkeit ein Läufer?
Henrik Juel: Sc6
White captured 3 times, but only 2 black men are missing, so Sc6 or Sf6 must be a wL
Only wLc6 works, as g7xLh6 is needed (2019-1-30)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 43 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
49 - P0005573
Raymond Smullyan
44 The Chess Mysteries of the Arabian Knights 1981
P0005573
(14+15)
Es sind keine weißen UWF auf dem Brett. Der wB b3 kam von b2. Welcher der sSS ist eine UWF?
Henrik Juel: Sh8
[Pa2] promoted on b8, so Sa8 is original
Later [Pd7] promoted on b1, so Sa1 is original (2019-1-30)
comment
Keywords: Conditional problem, Non-standard material
Genre: Retro
Reprints: 44 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
50 - P0005574
Raymond Smullyan
44b The Chess Mysteries of the Arabian Knights 1981
P0005574
(14+15)
Es sind keine weißen UWF auf dem Brett. Der wK hat noch nicht gezogen. Welcher der sSS ist eine UWF?
Henrik Juel: Sa8
[Pe2] promoted on d8 after capturing [Lf8], so Sh8 is original
Later [Pd7] promoted on b1, f1, or d1 after capturing [Lc1], so Sa1 is original (2019-1-30)
comment
Keywords: Promotion, Conditional problem, Non-standard material
Genre: Retro
Reprints: 44b Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
51 - P0005575
Raymond Smullyan
45 The Chess Mysteries of the Arabian Knights 1981
P0005575
(11+13)
Kein wSS hat über die 6. Reihe hinaus gezogen. Der sK und die sD haben weder gezogen noch sind sie angegriffen worden. Der schwarze Königsspringer hat erst einmal gezogen. Ist die wD eine Originaldame?
Henrik Juel: No
After d7xTc6, [Pa2] could play a4xLb5-b6xSa7-a8=D, but the promoted D could not go to d6 to be captured, because it is impossible to screen on d7 (2019-1-30)
comment
Keywords: Conditional problem, Promotion
Genre: Retro
Reprints: 45 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
52 - P0005576
Raymond Smullyan
46 The Chess Mysteries of the Arabian Knights 1981
P0005576
(13+13)
Der erste schwarze Zug war Bd7-d5. Der sK und die sD haben noch nicht gezogen. Weiß kann noch rochieren. das Feld d7 war nur einmal besetzt.
Welches ist die weiße Originaldame?
Henrik Juel: Seems unsolvable
The only possible sequence is
d7-d5 before e7-e6 before d2xLe3 before a7xLb6 before g2xTh3 before h7xTLg6 before Th8-a7 before b7xLTa6 before c6xTb7-b8=D
With a screen on d7 both wDD can go via c6, so we cannot say which is which
. (2019-1-30)
Mario Richter: Original stipulation:
(1) Black's first move was the pawn from d7 to d5.
(2) The Black royalty has not yet moved, and White can castle.
(3) The square d7 has been occupied only once. (2019-1-30)
Henrik Juel: .
With Mario's additional condition, please change the last sentences in my above comment to:
The promoted D cannot leave the NW corner, so Dg8 is original
. (2019-1-30)
comment
Keywords: Promotion, Conditional problem, Non-standard material
Genre: Retro
Reprints: 46 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
53 - P0005577
Raymond Smullyan
47 The Chess Mysteries of the Arabian Knights 1981
P0005577
(13+12)
Die ersten beiden Einzelzüge waren 1. d2-d4 d7-d5. Der sK und die sD haben noch nicht gezogen; Weiß darf noch rochieren. Die Felder d7 und e2 sind nie wieder besetzt und auch nicht überquert worden.
Welches ist die weiße Originaldame?
Henrik Juel: Db8
The only possible capture sequence after 1.d4 d5 is
a7xLb6 before g2xTh3
Then [Dd1] goes to b8, and [Lf1,Th1] are captured on a6,g6
Now [Lc8] can get out via b7 and with [Lf8,Th8] enable e2xf3xgxh6 and promotion on h8
Db8 cannot leave the NW corner, so she is original
. (2019-1-30)
comment
Keywords: Conditional problem, Castling, Promotion, Non-standard material
Genre: Retro
Reprints: 47 Die Schachgeheimnisse des Kalifen 1984
R12 Phénix 275-276, p. 10810, 07-08/2017
R12 Phénix 275-276, p. 10816, 07-08/2017
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-1-30 more...
54 - P0005578
Raymond Smullyan
48 The Chess Mysteries of the Arabian Knights 1981
P0005578
(13+13)
Die beiden KK und die sD haben noch nicht gezogen. Die wD wurde von einem Turm geschlagen. Von welchem?
Henrik Juel: [Th8]
The only possible capture sequence was
g2xLf3 before b7xLc6 before b2xTc3
So [Ta8] was captured before wD (2019-1-30)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 48 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
55 - P0005579
Raymond Smullyan
49 The Chess Mysteries of the Arabian Knights 1981
P0005579
(14+13)
Die beiden KK haben noch nicht gezogen. Welcher wT ist eine UWF?
Henrik Juel: Th1
d7xLe6 permits T-d7, and e7xLd6 frees [Lf8], needed for [Pe2] to promote (on h8)
b2-b3 (before e7xLd6) prevents the promoted T from reaching a1, so Ta1,d7 are original (2019-1-30)
comment
Keywords: Conditional problem, Promotion, Non-standard material
Genre: Retro
Reprints: 49 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
56 - P0005580
Raymond Smullyan
50 The Chess Mysteries of the Arabian Knights 1981
P0005580
(14+15)
Der sK hat noch nicht gezogen; der wK nur einmal. Zwei Türme haben nie gezogen; welche?
Henrik Juel: Ta8 and Th1
Black played gxLf-f3xLe2-e1=T (DL would check immediately, S on f3)
The promoted T could exit only via a1, after axTb, so Ta1 has moved to make way (and Th8 is promoted)
. (2019-1-30)
comment
Keywords: Conditional problem
Genre: Retro
Reprints: 50 Die Schachgeheimnisse des Kalifen 1984
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-3-7 more...
57 - P0006465
Frank Müller
3892 Problemkiste (102), p. 166, 12/1995
P0006465
(1+0)
Platzwechselcirce
a) Ergänze sK und 3sBB zu einem IC!
b) Ergänze sK, 2sBB und wB zu einem IC!
a) sKa8 sBa7b7b8
b) sKa8 sBa6b7 wBa7
play all play one stop play next play all
Erich Bartel: Lösung:
a) sKa8, sBa7b7b8, b)sKa8,sBa6b7,wBa7.--
Konvention bei solchen Retros mit Bedingung, die nicht zu
üblichen PAS zurückzuführen sind, ist: Als legal gilt eine
Stellung, die in eine retrograde Ruhestellung rückführbar
ist (Hans Gruber) (2007-2-11)
Henrik Juel: The solution to part b) should probably have a black pawn on a6 like Erich says, not on a7 (2019-2-14)
Mario Richter: I don't know much about Platzwechselcirce, so can please somebody explain why in b) position without black pawn b7 is legal? (2019-2-15)
Henrik Juel: PWC is very iffy in retroproblems, as you cannot increase the number of men by uncaptures; hence we need the strange construct Ruhestellung
Earlier we had sKa7 and a checking wPb6, then KxPb6[+Pa7] explains the pawn inversion on the a-line (2019-2-15)
Henrik Juel: or, if you want to avoid an illegal selfcheck
Ka7xPb7[+Pa7] ... (2019-2-15)
comment
Keywords: Illegal cluster, only Kings, Interchange Circe
Genre: Retro, Fairies
Input: Gerd Wilts, 1996-6-16
Last update: Alfred Pfeiffer, 2019-2-15 more...
58 - P0006650
Thomas R. Dawson
440v The Chess Amateur 01/1924
N. Hoeg gewidmet
P0006650
(11+12)
#1 vor 2
VRZ, Typ Hoeg
R: 1. a2xTb3 ... 2. f6xSe7,f6xLe7, dann 1. Lg7#
R: 1. a2xLb3 ... 2. f5xTe6,f5xSe6, dann 1. Sf7#
R: 1. a2xSb3 ... 2. Kf8-e8,Kf8xLe8, dann 1. Lg7#
play all play one stop play next play all
Henrik Juel: .
Black pawns captured all five missing white men
Black is missing TLLS, three of which were captured by white pawns (axb, fxe, h5xg6) and the remaining one by a white officer
The potential mates are 1.Lg7 (requiring that g7 is covered) and 1.Sf7 (requiring that g6 is covered)
If White immediately moves back so as to cover g7 or g6, Black can defend by supplementing wisely:
-1.f6?:Te7!, -1.f5?:Le6!, -1.Kf8?:Se8!
So White starts by moving Pb3 back to a2, forcing Black to commit himself by supplementing T, L, or S, the absence of which is then exploited by White
There is also another try, -1.a3?:Lb4! -2.f5:Le6!, where Black is successful, because he can afford to 'lose' his dark-squared bishop
In the third variation above, 2.Kf8-e8 is slightly misleading, as it could also be 2.Kf8xLe8; but this is no dual: White does not retract in the usual sense, he just moves his king back to f8 and lets Black complete the retraction by choosing what (if anything) to supplement on e8; Black would like to supplement D, T, or S (to prevent 1.Lg7#), but all three possibilities are illegal (D and S are not missing, and Txe8+ would imply too many black captures)
In Caissa's Wild Roses the author wrote:
... my best example of variations in addition, one of the loveliest features of this Fairy type.
. (2019-2-4)
more ...
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (7) On Retraction Chess Problems 1927
106 Caissa's Wild Roses 1935
Input: Gerd Wilts, 1996-7-16
Last update: Alfred Pfeiffer, 2019-2-5 more...
59 - P0006651
Thomas R. Dawson
1438 Eskilstuna-Kuriren 09/02/1924
P0006651
(10+12)
#1 vor 2
VRZ, Typ Hoeg
R: 1. f2-f3 b7-b6 2. Le4-g2, dann 1. c3#
R: 1. f2-f3 e7-e6 2. Sf1-e3, dann 1. Sfd2#
R: 1. f2-f3 h6-h5,h7-h5 2. Sd5-e3, dann 1. Sc3#
R: 1. f2-f3 Sh7xDf8 2. Db4-f8, dann 1. Scd2#
play all play one stop play next play all
Henrik Juel: The last variation is better written as -1... Sh7xDf8 (or just -1... Sh7:D) etc. (2004-3-18)
Henrik Juel: In the first three variations Black loses the right to add a light-squared bishop, a dark-squared bishop, and a rook, respectively
In the last variation Black permits White to add a queen (2019-2-4)
comment
Keywords: Grimshaw, Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (10) On Retraction Chess Problems 1927
107 Caissa's Wild Roses 1935
Input: Gerd Wilts, 1996-7-16
Last update: Alfred Pfeiffer, 2019-2-5 more...
60 - P0006652
Thomas R. Dawson
1437 Eskilstuna-Kuriren 09/02/1924
P0006652
(7+13)
#1 vor 3
VRZ, Typ Hoeg
R: 1. Ke4-e3 Sf7-g5 2. Ke5-e4 Sd6-f7 3. Lf7-h5, dann 1. g5#
R: 1. Ke4-e3 Se6-g5 2. Kf4-e4 Sc7-e6 3. Lf7-h5, dann 1. g5#
R: 1. Ke4-e3 Sf3-g5 2. Kd4-e4 Sd2-f3 3. Lf7-h5, dann 1. g5#
play all play one stop play next play all
Henrik Juel: All captures were pawn captures, so whenever an officer is moved back, the opponent may not add anything (2019-2-4)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (9) On Retraction Chess Problems 1927
108 Caissa's Wild Roses 1935
Input: Gerd Wilts, 1996-7-16
Last update: Alfred Pfeiffer, 2019-2-5 more...
61 - P0006667
Charles Mason Fox
(33) On Retraction Chess Problems 1927
1. Preis
Hoeg-Rückzüger
P0006667
(11+8)
#1 vor 3
VRZ, Typ Hoeg
R: 1. g3xLh4 ... 2. Kh5-h6 f7xTg6 3. Sf6-g8, dann 1. Tg8#
play all play one stop play next play all
Henrik Juel: .
[Pd7,f7,g7] captured all five missing white men (dxexfxg, fxg, gxh), so [Pa7,b7,c7] never captured and did not promote, but were captured on their files
If White immediately moves his king back to h5, a foolish Black might add Lh6 permitting White to mate, but a smart Black adds nothing
In Høeg's notation with additions in brackets (0 meaning no addition):
1.Kh5-h6?[L?] f7-g6+[T!] 2.Sf6-g8 rm
(1... g7-g6 is illegal)
(Høeg usually did not write the mating move (Tg8 or Txg8); instead he wrote rm (for retromate) meaning that now White could win by mating); (and his stipulation was Retromate in 3 moves)
But 1.Kh5-h6?[0!] g7-g6+! and no mate in sight
So a Vorplan is needed
1.g3-h4[L] (this addition is forced)
and now Black cannot prevent the threat
2.Kh5-h6[0] (Black may not add anything) forcing 2... f7-g6+[T] 3.Sf6-g8 rm
(A black defense like 1... Sa6-b8 does not prevent the threat, but it does permit short mate by 2.Sf6-g8[DTL] rm (Dxg8))
I prefer abbreviated notation with a colon separating the decisions of the two camps and negative move numbers for retractions, e.g.
-1.Kh5?:0! g7!
-1.g3:L thr. -2.Kh5:0 f7:T -3.Sf6, 1.Tg8#
or slightly less abbreviated, but clearer
-1.g3:Lh4 thr. -2.Kh5:0 f7:Tg6 -3.Sf6, 1.Tg8#
. (2019-2-5)
A.Buchanan: Thanks for the lucid explanation, Henrik :) (2019-2-5)
Henrik Juel: You are most welcome, Andrew
A tiny inaccuracy above:
Black CAN prevent the threat, if he falls completely apart and voluntarily moves back the way White wants
-1.g3:Lh4 f7?:Tg6 -2.Sf6, 1.Tg8#
(-2.Kh5?:Dh6! Df8 -3.Sf6, 1.Tg8?? Dxg8 (or -2... Dg7)) (2019-2-6)
more ...
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: 192 C. M. Fox, His Problems 1936
Input: Gerd Wilts, 1996-7-17
Last update: A.Buchanan, 2019-2-5 more...
62 - P0006671
Charles Mason Fox
(43) On Retraction Chess Problems 1927
P0006671
(14+9) cooked
#1 vor 4
VRZ, Typ Hoeg
R: 1. f7-f8=L Sf8xLh7 2. Lg8-h7 Sd7xLf8 3. g4-g5 Sb8-d7 4. d6xBc7, dann 1. Sxc7#
R: 1. f7-f8=L Sf8xLh7 2. Lg8-h7 Sh7xLf8 3. b5-b6 Dd4-e4,Ld6-e5 4. De4-f5,Dd5-f5, dann 1. cxb7#
R: 1. f7-f8=L Sf8xLh7 2. Lg8xSh7 Sd7xLf8 3. Kc3-b3 Ld6-e5+ 4. Dd5-f5, dann 1. cxb7#
R: 1. f7-f8=L Dd4-e4,Ld6-e5 2. De4-f5,Dd5-f5, dann 1. cxb7#
play all play one stop play next play all
Cook: NL
R: 1. Kc4xSb3 Sd4-b3+ 2. Kb3xTc4,Kb3xSc4 Sc2xTd4+,S~xTd4+ 3. g4-g5, dann 1. Td8#
R: 1. Kc4-b3 Ld4-e5,De3-e4 2. Dd5-f5,De4-f5, dann 1. cxb7# (V. Røpke)
Henrik Juel: Diagram error: Qf5 should be white. -1.B=f7 Sf8:B -2.Bg8 Sd7:B -3.g4 Sb8 -4.d6:P, 1.Sxc7#; -2... Sh7:B -3.b5 Qd4/Bd6 -4.Qe4/Qd5, 1.cxb7#; -2.Bg8:S Sd7:B -3.Kc3 Bd6 -4.Qd5, 1.cxb7#; -1... Qd4/Bd6 -2.Qe4/Qd5, 1.cxb7#. (2003-11-11)
Henrik Juel: .
Cooked by V. Røpke (by letting wK walk into check)
-1.Kc4:Sb3 Sd4-b3+ -2.Kb3:TSc4 S~:Td4+ and e.g. -3.g4, 1.Td8#
(even if Black adds a fourth knight on c4, it is legal for White to add a third rook on d4)
If Black does not add Sb3, the mate is even faster:
-1.Kc4 Ld4/D~ -2.Dd5/De4, 1.cxb7#
(White chooses not to add anything on e5/e4; Black cannot prevent the mate by addition on f5)
. (2019-2-5)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: 197 C. M. Fox, His Problems 1936
Input: Gerd Wilts, 1996-7-17
Last update: Alfred Pfeiffer, 2019-2-6 more...
63 - P0006887
Thomas Brand
K500 Problemkiste 106 08/1996
P0006887
(1+1)
Ergänze wB und sT zu einem IC!
Circe
+wBe2, sTe1
play all play one stop play next play all
Henrik Juel: Here the content is why the five tries do not work:
Pa2,Ta2, Pc2,Tc1, similar on d-file, f-file, g-file
These positions are all legal (2019-2-14)
comment
Keywords: Circe, Illegal cluster, only Kings
Genre: Retro, Fairies
Input: Gerd Wilts, 1996-8-7
Last update: A.Buchanan, 2017-4-6 more...
64 - P0008817
Niels Høeg
T11 Tidskrift för Schack 07/1924
P0008817
(11+2)
Schwarz konnte vor 2 Zügen mattsetzen
VRZ, Typ Hoeg
R: 1. Lb2xTa1 Ta2-a1 2. La1-b2 Tb2xSa2, dann 1. ... Txc2#
R: 1. Lb2xTa1 Ta2-a1 2. La1xSb2 Sa4-b2,Sc4-b2, dann 1. ... Txc2#
play all play one stop play next play all
In a retromate problem white achieves, against all black defences, a position where white can mate. In a selfretromate problem white achieves, against all black defences, a position where black can mate. Since white starts in both forms, a selfretromate lasts .5 retractions longer than the corresponding retromate).

Most retractions and supplements are forced. It is illegal for black to supplement a queen on a1. The black rook entered the cage via d1, and the kings entered via a3 and b2.
Henrik Juel: Retromate and Selfretromate are the stipulation names used by Høeg (in danish Retromat and Selvretromat)
In the PDB 'Retromate in n moves' is written as '#1 vor n'
'Selfretromate in n moves' is written as 'Schwarz konnte vor n Zügen mattsetzen'
(Note that 's#1 vor n' is very different from 'Selfretromate in n moves') (2019-2-6)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (19) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Alfred Pfeiffer, 2019-2-7 more...
65 - P0500869
Wolfgang Dittmann
2141 Die Schwalbe 45 06/1977
P0500869
(0+6)
Ergänze wK, 2 sTT, sL, sB zu einem IC!
(+wKe3,sTd6f6,sLg1,sBe5)
R: 1. f2-f1=S++? kein letzter wZug!
-Bc4 oder -Bg4:
legal R: 1. Kd3xBe3 d4xe3ep++
oder R: 1. Kf3xBe3 f4xe3ep++
play all play one stop play next play all
more ...
comment
Keywords: En passant in the retro play, Illegal cluster, Promotion
Genre: Retro
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2019-2-18 more...
66 - P0500963
Michael McDowell
1122v The Problemist 09/1986
3. Preis
P0500963
(2+12) cooked
h#7
1. Se7 Lb2 2. Tf5 La3 3. Tc5 Lb4 4. d5 La5+ 5. Kd6 Lb6 6. Te3 La7 7. Te6 Lb8#
play all play one stop play next play all
Cook: NL 1. Td3 Le5 2. Se3 Lxf4 3. c5 Lxg3 4. Kc6 Lh4 5. Kd5 Kf2 6. Kd4 Kf3 7. d5 Lf6#
uvm
Läuferleiter
Michael McDowell: The correction of this was published in The Problemist 11/1996
8/2k1p3/2pp4/8/2p2pb1/2r4p/6rp/B4s1K h#7 (2004-7-28)
Olaf Jenkner: Korrektur siehe P1360471 (2019-2-2)
comment
Keywords: Superseded by (P1360471), Minimal, Staircase (L)
Genre: h#
Reprints: E220 FIDE Album 1986-1988 1995
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2019-2-3 more...
67 - P0500982
Conrad Bayer
424 Leipziger Illustrirte Zeitung 16/08/1851
P0500982
(8+10) C+
#9
1. Tb7 Dxb7 2. Lxg6+ Kxg6 3. Dg8+ Kxf5! 4. Dg4+ Ke5 5. Dh5+ Tf5 6. f4+ Lxf4 7. Dxe2+ Lxe2 8. Te4+ dxe4 9. d4#
play all play one stop play next play all
Gemäß Büsing in Die Schwalbe 12/2003 ist die häufig zitierte Quellenangabe Era-Turnier 1856 1. Sendungspreis falsch.
Das unsterbliche Schachproblem - häufig zitiert

auch die AZW schreibt "Era 1856"

DZ im Ostland: "Seltsamerweise ist die Aufgabe weder im Handbuch der Schachaufgaben M. Lange 1862 noch bei J. Dufresne 1864 genannt worden."

In 'Austrums' ist das Problem in eine kleine Schachhumoreske von H.Adolphi eingebettet.

Die 'Encyclopedia' schreibt zwar auch "1.pr The Era Tourney 1856" hat aber auch noch den folgenden Hinweis: "According to Friedrich Amelung the problem was first published in 'Leipziger Illustrierte Zeitung' in 1855 without author's name. (Chicco & Porreca)"
Henrik Juel: Popeye 4.61 with opt dro 1 found no flaws (2016-7-21)
Sally: °
Weiß opfert sechs Steine von sieben und setzt mit dem letzten
verbliebenden Bäuerchen auf d4 Matt. Das Schlußmodel dieses
Opferminimals ist gewiß imposant, aber dieses ganz in der Vergangenheit stehende Problem verdient gewiß nicht den Titel
"Das unsterbliche Problem"! den seine Zeit ihm gegeben hat. (2019-1-24)
more ...
comment
Keywords: Opferminimal
Genre: n#
Computer test: Gustav 4.0f, Brute Force
Reprints: I Austrums 01/01/1899
Arbeiter-Zeitung (Wien) 01/02/1932
56 Deutsche Zeitung im Ostland 30/11/1942
14 Snamenitye komposizii 1973
Die Schwalbe , p. 299, 12/2003
1027 Minimalkunst im Schach 2006
793 Encyclopedia of Chess Problems 2012
VI) Tehtäväniekka 03/2012
Input: Gerd Wilts, 1996-6-6
Last update: Alfred Pfeiffer, 2019-1-24 more...
68 - P0501293
Antonis Tataris
3003 Sinfonie Scacchistiche 04-06/1979
P0501293
(3+4) cooked
h#3
1. Lc1 Tb7+ 2. Kh6 Lb1 3. Lg5 Th7#
play all play one stop play next play all
Cook: NL
1. Kf6 Kg2 2. Ke5 Te1+ 3. Kf4 Te4#

Duplicate Diagram: P0510116

Vorgänger:
E. Reichel, 1975
P0510116
Yuri Bilokin: Correction: wKh1-d1 8/6kB/8/6b1/8/8/p7/rR1K4 (3+4) (2019-3-30)
comment
Keywords: Interchange (TL (72)), Check Protection
Genre: h#
Input: hpr, 1996-6-14
Last update: Alfred Pfeiffer, 2019-4-2 more...
69 - P0501522
Kjell Widlert
feenschach 7, p. 193, 01/1972
4. Preis
25. Thematurnier
P0501522
(4+14) cooked
h#4
1. La2+ Lf1 2. Lgb1 Lxg2 3. Lf7+ Lxa8 4. Lfg6 Lf3#
play all play one stop play next play all
Cook: NL
1. Ld4 gxf4 2. La7 Lb7 3. Lf2+ Lxa8 4. Lxh4 Lf3#
Yuri Bilokin: Correction: +bpb6 rn4q1/8/Bp3pbp/4b2k/5p1P/2p3P1/6p1/Kb4rn (4+15) (2019-3-13)
comment
Keywords: Interchange (ll (50)), Check Protection, Non-standard material
Genre: h#
Input: hpr, 1996-7-1
Last update: Alfred Pfeiffer, 2019-3-14 more...
70 - P0501896
Jan A. Rusek
1614 Gazeta Czestochowska 18/12/1973
P0501896
(4+3) cooked
h#3
1. Kd4 Sc7 2. Td5 Ta6 3. Kc5 Se6#
play all play one stop play next play all
Cook: NL
1. Tc1 Kb2 2. Tc5 Sb4+ 3. Kc4 Te4#
1. Tc4 Sb4+ 2. Kc5 Ka3 3. Td4 Tc6#
Adrian Storisteanu: Possible fix: bPa5->b4, wKb3->f8, +wPb3 (5+3). (2015-10-6)
Yuri Bilokin: Correction: wKb3-g8, bpa5-b4, +bbc4 6K1/8/N3R3/2rk4/Ppb5/8/8/8 (3+5) (2019-3-4)
comment
Keywords: Interchange (TS kt)
Genre: h#
Input: hpr, 1996-7-12
Last update: Alfred Pfeiffer, 2015-10-6 more...
71 - P0502647
John Niemann
128-ro Schachmatt 13 31/12/1946
P0502647
(2+5)
h#2*
4x4-Brett (e5-h8)
* 1. ... g8=S 2. Tg7 Sxf6#
1. Lg5! g8=D 2. h6 Dxg6#
play all play one stop play next play all
Wurde als eine von vier Teilaufgaben in einem 8x8-Brett veröffentlicht, und zwar in der Ecke rechts oben.
Die anderen Teilaufgaben sind P1363314, P1363315 und P1363316.
more ...
comment
Keywords: no 8x8 board, Promotion (S,D)
Genre: h#, Fairies
Computer test: Popeye 4.61
Input: hpr, 1996-7-23
Last update: Alfred Pfeiffer, 2019-4-17 more...
72 - P0503631
Yosif Krikheli
feenschach 47, p. 174, 07-09/1979
nach L. Ugren
P0503631
(4+1) cooked
h#4
0.1...
1. ... Tf5 2. Ke4 Tg5 3. Kf4 Tg4+ 4. Kf5 Tf4#
play all play one stop play next play all
Cook: NL
1. ... Ke6 2. Kc4 d5+ 3. Kb5 Tb4+ 4. Kc5 Lf8# (Henrik Juel)
Yuri Bilokin: Correction: 5K2/7B/8/3P1R2/3k4/8/8/8 (4+1)
1…Rf6 2.Ke5 Rg6 3.Kf5 Rg5+ 4.Kf6 Rf5# (2019-2-1)
Henrik Juel: There is another unique solution
1... Ke6 2.Kc4 d5+ 3.Kb5 Tb4+ 4.Kc5 Lf8#
So with 2 solutions stipulated the problem is C+ by Popeye 4.61
But this other solution does not show a round-trip, which is probably why Yuri has offered a correction (2019-2-1)
comment
Keywords: Pure Round Trip (T), Rex solus (s)
Genre: h#
Input: Hans-Jürgen Schäfer, 1996-9-23
Last update: Alfred Pfeiffer, 2019-2-1 more...
73 - P0503635
Yosif Krikheli
6390v Springaren 12/1988
P0503635
(2+5) cooked
h#4
1. Kg7 Le7 2. Th7 Lf8+ 3. Kf6 Lh6 4. Tg7 Lg5#
play all play one stop play next play all
Cook: NL
1. Kg7 Kg3 2. Th7 Lh6+ 3. Kf6 Kf4 4. Tg7 Lg5#
Steven B. Dowd: Korrektur: +WBf3 (da auch 1. Kf3 und dann Kf4 geht) und + SBh4 ist dann C+ (Alybadix). (2005-10-9)
Yuri Bilokin: Correction: +brd3 8/5p1k/4q1pr/6B1/5K2/3r4/8/8 (2+6) (2019-2-1)
A.Buchanan: +sBe7 then shift and rotate to get 2K5/1L6/tp1d4/k1pp4/8/8/8/8 The single new pawn does get captured in the solution, which might be seen as a downside, but the minimal ideal mate is retained. A glance at P0564037 by the same composer shows that he is ok to have a unit captured in the course of a round trip. So this is my preferred fix. (2019-2-2)
more ...
comment
Keywords: Pure Round Trip (L), Minimal (L), Ideal mate
Genre: h#
Input: hpr, 1996-9-23
Last update: A.Buchanan, 2019-2-2 more...
74 - P0503847
Albert Zickermann
279v Bottroper Volkszeitung 05/02/1936
P0503847
(4+10) cooked
h#4
1. Lh5 Lg4 2. Le8 Lc8 3. Lxb5 La6 4. Lc4+ Lxc4#
play all play one stop play next play all
Cook: NL
1. Lf1 b6 2. Lh3 b7 3. Lc8 bxc8=D 4. c4+ Dxc4#
Yuri Bilokin: Correction: 8/8/1p6/1PpK4/8/p1pkr3/1pprb3/1nbB4 (3+12)
Version 1: h#2 2.1… 8/8/1p6/1PpK4/8/p1pkr2p/1pppb3/1nbB4 (3+13)
1.Bh5 Bg4 2.Be8 Bc8 3.Bxb5 Ba6 4.Bc4+ Bxc4#
1.Rg3 Ke5 2.Bf3 Kf4 3.Rg4+ Kxf3 4.Rd4 Be2#
Version 2: 4B3/3brp2/3rkp2/6p1/4K1P1/8/8/8 (3+7)
1.Ba4 Bb5 2.Bd1 Bf1 3.Bxg4 Bh3 4.Bf5+ Bxf5# (2019-3-13)
comment
Keywords: Alleinunterhalter
Genre: h#
Input: Hans-Jürgen Schäfer, 1996-9-23
Last update: Alfred Pfeiffer, 2019-3-13 more...
75 - P0505287
Constantin Bidulescu
Revista de Sah 01/1977
3. Platz
Rumänische Meisterschaft
P0505287
(4+6) cooked
h#4
1. La1 Lb2 2. f5 Lh8 3. Lg7 d3+ 4. Ke5 Lxg7#
play all play one stop play next play all
Cook: NL 1. Lc3 Lb2 2. Ke5 La1 3. Le4 dxc3 4. f5 c4#
Adrian Storisteanu: The author's name is Constantin Bidulescu. (2015-10-12)
Yuri Bilokin: Correction: -wPa3, bpa4-b4, bqf4-c5, +bnc8, bpd5(-bbd5), +brf4
2n4b/3K1p2/8/2qp4/1p2kr2/8/3P4/2B5 (3+8) (2019-3-12)
comment
Keywords: Clearance
Genre: h#
Input: hpr, 1996-12-26
Last update: Alfred Pfeiffer, 2015-10-13 more...
76 - P0505291
Mykola Nagnibida
Nikolay Budkov

10316 British Chess Magazine 07/1971
P0505291
(4+8) cooked
h#4
1. Lh1 Lg2 2. Kc4 La8 3. Lb7 b3+ 4. Kd5 Lxb7#
play all play one stop play next play all
Cook: NL
1. Ta1 Lxe2 2. Td6 Kxd6 3. Ta5 Kxc5 4. Ka4 Ld1#
Yuri Bilokin: Correction: bpb5-d3, bne2-f4(-wPf4), -bre1, +bpd2, +bpe2, +bpe5, +bnf6, +bpg4
b7/4K3/5n2/2p1pp2/3r1np1/1k1p4/1P1pp3/5B2 (3+12) (2019-3-13)
comment
Keywords: Clearance
Genre: h#
Input: hpr, 1996-12-26
Last update: Alfred Pfeiffer, 2019-3-13 more...
77 - P0505331
Wilhelm Hagemann
689 Essener Volkswacht 14/03/1931
P0505331
(3+4) cooked
h#3
1. d1=T Th1 2. Tg1+ Kf6 3. Tg4 Tf1#
play all play one stop play next play all
Cook: NL
1. Kg5 Txe3 2. Kh5 Kf6 3. Kh6 Th3#
versetzt man wBh2 nach h3, HJS gibt's ne neue eindeutige Lösung: 1. d1=T Tg1 2. Tf1 Kf6 3. Tf3 Tg4#,
Yuri Bilokin: Correction: +bbe8 4b3/6K1/8/8/4pk2/4p3/3p3P/4R3 (3+5) (2019-3-22)
comment
Keywords: Clearance, Promotion in the key, under-promotion (t)
Genre: h#
Input: hpr, 1996-12-27
Last update: Alfred Pfeiffer, 2019-3-23 more...
78 - P0505408
Heinz Brixi
(F4) L'Opinio 03/10/1934
P0505408
(4+3) cooked
h#4
1. Kf4 e4 2. La1 Lb2 3. g4 Lc1 4. Le5 d3#
play all play one stop play next play all
Cook: NL
1. Kf5 d3 2. Kf4 e4 3. Le5 Lg7 4. g4 Lh6#
Yuri Bilokin: Correction: +bqh4, +bng8, +bnh2 6nB/6b1/8/4k1p1/7q/8/3PP1Kn/8 (4+6) (2019-3-12)
comment
Keywords: Clearance
Genre: h#
Input: hpr, 1996-12-27
Last update: Alfred Pfeiffer, 2019-3-12 more...
79 - P0505672
Willibald Roese
25 Schnittpunktkombinationen und ihre Antif 1924
P0505672
(3+3) cooked
h#3
0.1...
1. ... Th1 2. Th2 Kf7 3. Txh4 Txh4#
play all play one stop play next play all
Cook: NL
1. ... Kf6 2. Kg8 Tb3 3. Kf8 Tb8#
Yuri Bilokin: Correction: bra2-g2, bpa3-g3 7k/8/4K3/8/7P/6pR/6r1/8 (3+3) (2019-3-22)
comment
Keywords: Clearance
Genre: h#
Input: hpr, 1996-12-27
Last update: Alfred Pfeiffer, 2019-3-22 more...
80 - P0507988
Viktor Sizonenko
Evgeny Sorokin

3655 Land og Folk 13/10/1979
P0507988
(4+9) cooked
h#2
4.1...
1) 1. Dd5 e8=L 2. Ke6 Ld7#
2) 1. Kg6 e8=T 2. f5 Txg8#
3) 1. Lf3 e8=S 2. Ke4 Sd6#
4) 1. Txg5 e8=D 2. Kf6 Dxf7#
play all play one stop play next play all
Cook: NL
1. Ld5 Lxb5 2. Ke6 Ld7#
t/Allumwandlung, u/61103
Yuri Bilokin: Correction: wBc4-b3, +bpd3 b5r1/2K1Pp1n/8/1q2rkBp/3b4/1B1p4/8/8 (4+10) (2019-2-27)
comment
Keywords: Allumwandlung
Genre: h#
Input: Erich Bartel, 1997-5-23
Last update: Alfred Pfeiffer, 2019-2-27 more...
81 - P0509078
Franz Palatz
131 L'Echiquier (Brüssel) 09-10/1932
P0509078
(4+4) cooked
h#4
1. Ld4 Lxf4 2. La7 b6 3. Ka8 bxc7 4. Lb8 cxb8=D#
play all play one stop play next play all
Cook: NL
1. c5 bxc6ep 2. Kc8 c7 3. Kd7 c8=D+ 4. Kd6 Lf8#
1. Ka8 b6 2. Ld4 bxc7 3. La7 Lxf4 4. Lb8 cxb8=D#
Yuri Bilokin: Correction: -bbh8, wKe4-f3(-wPf3), +bna8 nk6/2p5/7B/1P6/5p2/5K2/8/8 (3+4)
1.Sb6 Bxf4 2.Sd7 b6 3.Ka8 bxc7 4.Sb8 cxb8=Q# (2019-3-12)
comment
Keywords: Promotion in the mating move, En passant
Genre: h#
Input: hpr, 1997-6-2
Last update: Alfred Pfeiffer, 2019-3-12 more...
82 - P0509474
Yosif Krikheli
1137 Biuletyn 01-02/1969
P0509474
(3+4) cooked
h#5
1. Se6 Lf8 2. Se7 Kf3 3. Kc5 Ke3 4. Kd5 Kd3 5. Sc6 e4#
play all play one stop play next play all
Cook: NL
1. Sb4 Ld4 2. Se6 Kf3 3. Sc6 Ke3 4. Kd5 Kd3 5. Ld6 e4#
1. Lc7 e4 2. Kb5 exd5 3. Ka6 d6 4. Kb7 dxc7 5. Ka8 c8=D#
Adrian Storisteanu: Possible fix: wBc5->d6. (2019-2-16)
comment
Keywords: Excelsior, white (auto key), Check Protection, tempo play (k)
Genre: h#
Input: Markus Manhart, 1997-6-28
Last update: Alfred Pfeiffer, 2019-2-16 more...
83 - P0509757
Pavlos N. Moutecidis
834 Feladvanykedvelök Lapja 05/1972
P0509757
(4+12) cooked
h#4
1. Le2 Kh3 2. Tf3 Kg4 3. Te3+ Kf5 4. Lh5 Lf4#
play all play one stop play next play all
Cook: NL
1. Lf3+ Kh3 2. Kg5 Le1 3. Kf4 Kh4 4. f5 Lg3#
klären Nummer
Yuri Bilokin: Correction: -brh1, -bph2, +bnf1 8/3p2p1/3P1pPk/7b/2p1p3/4r1B1/3b2K1/3q1n2 (4+11) (2019-3-13)
comment
Keywords: Fesselungsspiel (112 110 110), Check Protection
Genre: h#
Reprints: 884 Feladvanykedvelök Lapja 05/1972
Input: Markus Manhart, 1997-6-26
Last update: Alfred Pfeiffer, 2019-3-14 more...
84 - P0509994
Leonid G. Iskra
Evgeny Sorokin

830 Feladvanykedvelök Lapja 05/1972
P0509994
(3+4) cooked
h#3
b) sSf5
a) 1. Dd1 Lh1 2. Df3 Kc4 3. Ke4 Te2#
b) 1. Dxb7 Kc4 2. Df3 Th6 3. Ke4 Te6#
play all play one stop play next play all
Cook: NL
a) 1. De1 Kc6 2. Ke4 Td2 3. De3 Kd6#
b) 1. De4 La6 2. Sd4+ Kc5 3. Sf3 Te2#
Yuri Bilokin: Correction: 8/6Rq/8/3bp3/5k2/1p6/8/1B1K4 (3+5) b) bnc5
a) 1.Qh3 Bh7 2.Qf5 Ke2 3.Ke4 Rg4#
b) 1.Qxb1+ Ke2 2.Qf5 Rc7 3.Ke4 Rc4# (2019-3-30)
comment
Keywords: Fesselungsspiel (111 101 000), Check Protection
Genre: h#
Input: Markus Manhart, 1997-6-28
Last update: Alfred Pfeiffer, 2019-4-2 more...
85 - P0510117
Yosif Krikheli
9121 FEENSCHACH 03/1969
Lob
21. Thematurnier
P0510117
(6+12) cooked
h#4
1. Sd5 Sh3 2. Se3 f3 3. Tf6 Sf2 4. Sf5 f4#
play all play one stop play next play all
Cook: NL
1. Db3 Sh3 2. Dxg3 Sg5 3. Kf4+ Kd4 4. Df3 Se6#
Yuri Bilokin: Correction: 8/1pp5/b1p1qn2/1pK1kr1p/1Pp2NpP/6P1/5P1p/6br (6+15) (2019-1-31)
comment
Keywords: Check Protection
Genre: h#
Input: Markus Manhart, 1997-6-27
Last update: Alfred Pfeiffer, 2019-2-1 more...
86 - P0510195
Hugo Früchtenicht
Franz Palatz

24 Kongreßbuch Teplitz-Schönau 1923
P0510195
(3+6) cooked
h#3
1. Tb2+ Lc2 2. Tb3 Tb2 3. Ka4 Ta2#
play all play one stop play next play all
Cook: NL:
1. La1 Lxb3 2. Le2 Lc4 3. Ka4 Txa1#
ua
Yuri Bilokin: Correction: q7/1b6/Bpp5/krb5/6K1/pRr5/2p5/1n6 (3+11)
1.Rb4+ Bc4 2.Rb5 Rb4 3.Ka6 Ra4# (2019-3-29)
comment
Keywords: Fesselungsspiel (111 101 000), Check Protection
Genre: h#
Input: Markus Manhart, 1997-6-27
Last update: Alfred Pfeiffer, 2019-4-2 more...
87 - P0512476
Sigurd Jensen
532 Land og Folk 04/07/1971
P0512476
(4+3) cooked
h#3
1. Tc6 e3 2. Le6 Sd7+ 3. Kd5 Td4#
play all play one stop play next play all
Cook: NL:
1. Ld3 Td4 2. Lb5 e3 3. Tc6 Sd7#
Yuri Bilokin: Correction 2r5/8/8/3k4/2N2P2/6b1/8/4R1K1 (4+3)
1.Rc5 f5 2.Bc7 Sb6+ 3.Kd6 Re6# (2019-3-5)
comment

Genre: h#
Input: Markus Manhart, 1997-9-30
Last update: Alfred Pfeiffer, 2019-3-6 more...
88 - P0516066
Rudolf Svoboda
966 Jas 29/08/1938
P0516066
(3+4) cooked
h#3
2.1...
1) 1. b1=L Txg5 2. Lf5 Tg3 3. Lbe4 Ld6#
2) 1. Ke3 Txg5 2. Kd2 Lh6 3. Kc1 Tg1#
play all play one stop play next play all
Cook: NL
1. Kg4 Le7 2. Tg6 Td4+ 3. Kh5 Th4#
Yuri Bilokin: Correction: 5B2/8/8/K2R4/3n1k2/8/1pb2b2/8 (3+5) (2019-3-30)
comment
Keywords: Promotion in the key, under-promotion (l)
Genre: h#
Input: Hans-Jürgen Schäfer, 1997-9-1
Last update: Alfred Pfeiffer, 2019-4-2 more...
89 - P0516602
Eduards Frizis Valcins
532 FIDE Revue T. 10-12/1961
P0516602
(4+4) cooked
h#4
1. Le5 e4 2. Tc3 Kf2 3. Kd4 Lg1 4. Ld3 Kf3#
play all play one stop play next play all
Cook: NL
1. La2 e4 2. Kc3 Kd1 3. Kb4 Kxc2 4. Ka3 Ld6#
Verstellung KL
Adrian Storisteanu: Possible fix: wKe1->g1. (2015-7-26)
Yuri Bilokin: Correction: a1=a2, + bb2-a1 8/8/8/8/1P1kP3/2r4B/b3K3/b7 (4+4)
1.Be6 e5 2.Rc4 Kf3 3.Kd5 Bg2 4.Bd4 Kf4# (2019-3-12)
comment
Keywords: Line closure
Genre: h#
Input: Gerd Wilts, 1997-7-21
Last update: Alfred Pfeiffer, 2015-7-28 more...
90 - P0516916
Karl Harder
528v Allgemeine Zeitung Chemnitz 07/11/1926
Wolfgang Pauly gewidmet
P0516916
(3+4) cooked
h#3
1. Tc3 Lg8 2. Ld3 Tf7 3. Kc4 Tf4#
play all play one stop play next play all
Cook: NL
1. Tc3 Ka5 2. Tc6 Td1+ 3. Kc5 Td5#
1. Td3 Ka5 2. Kc5 Tf8 3. Td4 Tc8#
Verstellung TcL
Felber, Volker: Die Korrektur vom 19.12.1926 (+sBd6) reicht nicht aus. (2014-11-8)
Adrian Storisteanu: Correction attempt of P1290435.
A quick fix could be +bPc6 (3+5). (2015-11-23)
Adrian Storisteanu: Or, with a shorter-range wB move: wBa2->d5, -bPd6 (3+3). (2015-11-23)
Yuri Bilokin: Correction: 8/4n3/1K6/8/1n1k4/5r2/B7/5R2 (3+4) (2019-3-30)
comment
Keywords: Line closure
Genre: h#
Input: Andreas Mokosch, 1997-7-23
Last update: Alfred Pfeiffer, 2015-11-23 more...
91 - P0517047
Karl Niesslbeck
Hans R. Kühn

3358v Schach-Echo 23/10/1963
P0517047
(3+4) cooked
h#3
2.1...
1) 1. Th6 Lh1 2. Te6 Tg2 3. Kd5 Td2#
2) 1. e4 Lc6 2. Te5 Ld7 3. Kd5 Td2#
play all play one stop play next play all
Cook: NL 1. Th6 Kc3 2. Kc5 Td2 3. Tb6 Td5#
Verstellung TcL
Yuri Bilokin: Correctoin: +bnd1 B7/8/3k4/4p2r/1K5p/8/7R/3n4 (3+5) (2019-3-30)
comment
Keywords: Line closure
Genre: h#
Input: Andreas Mokosch, 1997-7-23
Last update: Alfred Pfeiffer, 2016-9-14 more...
92 - P0517051
Evgeny Sorokin
2408 Diagramme und Figuren 26/03/1969
P0517051
(3+4) cooked
h#3
2.1...
1) 1. Kd5 Txb2 2. Ke4 Tb6 3. Sd5 Te6#
2) 1. Df2 La1 2. Df7 Tb2 3. Kf6 Tb6#
play all play one stop play next play all
Cook: NL
1. Db6 Kf3 2. Kf5 Te2 3. Dg6 Te5#
Verstellung TcL
Yuri Bilokin: Correction: +bne1 8/4n1B1/4k3/8/6K1/3p4/1q4R1/4n3 (3+5) (2019-3-30)
comment
Keywords: Line closure
Genre: h#
Input: Andreas Mokosch, 1997-7-23
Last update: Alfred Pfeiffer, 2019-4-2 more...
93 - P0517373
Filip S. Bondarenko
489 Gazeta Czestochowska 19/05/1965
P0517373
(3+5) cooked
h#3
1. Ld5 Tf7 2. Db5+ Kxb5 3. Te6 c5#
play all play one stop play next play all
Cook: NL:
1. Ld5 Td1 2. Dc7 Kb5 3. Te6 Txd5#
Verst-4
Yuri Bilokin: Correction: Swap bqc5 with bre5 8/4r3/3k4/2r1q3/K1P5/5b2/8/5R2 (3+5)
1.Bd5 Rf7 2.Rb5 Kxb5 3.Re6 c5# (2019-3-22)
comment

Genre: h#
Input: HBae, 1997-7-3
Last update: Marcin Banaszek, 2015-6-17 more...
94 - P0519836
Frantisek L. Adrian
6408 FEENSCHACH 07-08/1963
P0519836
(7+6) cooked
h#3
2.1...
1) 1. Txc1 Sg4 2. Txc2 Th6 3. Tc5 Td6#
2) 1. Txh1 Sg4 2. Th6 Le3 3. Te6 Le4#
play all play one stop play next play all
Cook: NL 1. Kxe5 Txg1 2. Td1 Txg5+ 3. Kd4 Lb2#
Adrian Storisteanu: Possible fix: +wPa2, +bPa3 (8+7). (2015-9-11)
Yuri Bilokin: Correction: +bpa3, +bpg3 8/8/8/3kP1p1/5p2/pP3Kp1/2B2p1N/2B2rrR (7+8) (2019-3-6)
comment
Keywords: Sacrifice of white pieces
Genre: h#
Input: Hans-Jürgen Schäfer, 1997-10-11
Last update: Alfred Pfeiffer, 2015-9-15 more...
95 - P0522299
Manne Persson
6691 Schach-Echo 08/1971
P0522299
(5+16) C+
h#2
1. a1=T f4 2. Kg3 Txb3#
play all play one stop play next play all
73 s Zugmöglichkeiten
VL: Reprints: zu 11589 (S.452) feenschach, H.231, Juli-Sep. 2018.
Task. My version 1Rb1K3/2B5/8/p1p4n/6rb/nq5k/p1p1pPrp/1N1N4, h#2, 2.1.1.1 (1.a1=T/axb1=L f4 2.Kg3 Txb3#) published ibid. contains a greater number of tempokey tries: 82 - the current record (for helpmates with a unique solution the record is 81). (2019-2-27)
comment
Keywords: tempo play (b(t)), under-promotion (T), Promotion in the key
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: zu 11589 feenschach 231, p. 452, 07-09/2019
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2019-2-28 more...
96 - P0522783
Fadil Abdurahmanovic
Wettkampf der jugoslawischen Republiken
2. Platz
Wettkampf der jugoslawischen Republiken
P0522783
(6+8) cooked
h#3*
* 1. ... Th5 2. Kc7 Txc5+ 3. Kb8 Tc8#
1. a6 Th1 2. Ka7 b8=T 3. gxh1=S Sc6#
play all play one stop play next play all
Cook: NL
1. Kc7 Sc6 2. a5 Sb4 3. Kb6 b8=D#
1. Kc7 Sc6 2. Kb6 Sb4 3. a5 b8=D#
milan: wSa5-d8+wPa5 M.Frelih (2019-4-17)
comment
Keywords: Sacrifice of white pieces, tempo play (b(s)), konsekutive Umwandlungen 2 (Ts), under-promotion
Genre: h#
Reprints: Problem 03/1958
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2019-4-17 more...
97 - P0523490
Yosif Krikheli
8303 FEENSCHACH 06/1967
P0523490
(3+3) cooked
h#2
b) sKb6 nach e8
a) 1. Tb5 Sc5 2. Ta5 Tb7#
b) 1. Te6 Se5 2. Te7 Th8#
play all play one stop play next play all
Cook: NL:
a) 1. Ta5 Sc5 2. Kb5 Tb7#
Yuri Bilokin: Correkcion: 8/7R/8/k4r2/4K3/4N3/8/8 (3+2) b) Ka5-f8
a) 1.Rc5 Sd5 2.Rb5 Ra7#
b) 1.Rf6 Sf5 2.Rf7 Rh8# (2019-1-26)
Yuri Bilokin: Correkcion: 8/7R/8/k4r2/4K3/4N3/8/8 (2019-1-26)
milan: wSd3-b3+wSf3wBa4 original solution! M.Frelih (2019-4-17)
comment
Keywords: tempo play (t t)
Genre: h#
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2019-1-26 more...
98 - P0523607
Yosif Krikheli
4993v Schach 08/1965
P0523607
(4+3) cooked
h#3
b) wKf6 nach c2
a) 1. Lc1 Se1 2. Ke3 Ke5 3. Ld2 Lb6#
b) 1. Lh5 Lh4 2. Kf3 Kd3 3. Lg4 Se1#
play all play one stop play next play all
Cook: NL:
a) 1. Ld2 Sf4 2. Ke3 Ke5 3. Lf3 Lb6#
Yuri Bilokin: Correction: 3B4/3p4/3P1K2/5P2/4kb2/8/2N1b3/8 (5+4) b) wKf6-c3
1.Bc1 Se1 2.Ke3 Ke5 3.Bd2 Bb6#
1.Bh5 Bh4 2.Kf3 Kd3 3.Bg4 Se1# (2019-1-29)
Gerald Ettl: in der Korrektur steht der wS auf c2. Nach wKf6 nach c2 ist der wS verschwunden und es geht kein matt in b) (2019-1-30)
Gerald Ettl: OK wKf6 nach c3 dann geht es. (2019-1-30)
comment
Keywords: tempo play (l l)
Genre: h#
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2019-1-30 more...
99 - P0523851
Yosif Krikheli
76v Land og Folk 20/05/1967
P0523851
(3+10) cooked
h#3
2.1...
1) 1. Ld5 Tc8 2. Sc5 Tc7 3. Se6 Sb5#
2) 1. Lf3 Tc6+ 2. Kd5 Sc2 3. Le4 Sxb4#
play all play one stop play next play all
Cook: NL
1. Kd5 Txc6 2. Te2 Sc2 3. Te4 Sxb4#
1. Kd5 Te2 2. Sc5 Sc4 3. Ld6 Sb6#
Yuri Bilokin: Correction: 8/8/2bk4/4p3/1p1p4/Nn6/pqR2p2/b4K1n (3+11) (2019-1-28)
comment
Keywords: tempo play (T l)
Genre: h#
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2019-1-29 more...
100 - P0524504
Willibald Roese
36 L'Echiquier (Brüssel) 09-10/1931
P0524504
(4+4) cooked
h#3*
* 1. ... Td2 2. Sd4 Te2+ 3. Kd3 Sf4#
1. Sfxe5 Se1 2. Sd3 Te5+ 3. Kd4 Sf3#
play all play one stop play next play all
Cook: NL:
1. Se1 Kg1 2. Kf3 Td3+ 3. Ke2 Sf4#
1. Dxe5 Se3 2. Df4 Sd1 3. Se3 Sc3#
Yuri Bilokin: Correction: 8/8/7K/8/2RP4/1q1k4/1p2n3/5N2 (4+4)
1… Rc1 2.Sc3 Rd1+ 3.Kc2 Se3#
1.Sxd4 Sg3 2.Sc2 Rd4+ 3.Kc3 Se2# (2019-3-4)
comment
Keywords: Echo
Genre: h#
Input: Markus Manhart, 1998-2-16
Last update: Alfred Pfeiffer, 2019-3-6 more...
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