165 problem(s) found in 1453 milliseconds (displaying 100 problem(s)).

1 - P0000945
Albrecht Brandis
Hugo August
Niels Høeg
Thomas R. Dawson
Valerian Onitiu

Skakbladet 1924
P0000945
(7+1)
Letzter Zug?
R: 1. Ka2xTa1
play all play one stop play next play all
more ...
comment
Keywords: Last Move? (KxT), Type A, Economy record
Genre: Retro
Reprints: A8a Length Records in Last Single Moves? , p. 4, 11/2009
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-25 more...
2 - P0000960
Niels Høeg
Hugo August

10) Skakbladet 08/1924
P0000960
(5+3)
Letzter Zug?
R: 1. Ka1xLa2
play all play one stop play next play all
Keywords: Type A, Last Move? (KxL), Economy record
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Frank Müller, 2013-12-27 more...
3 - P0000971
Hugo August
Otto Brennert
Thomas R. Dawson
Niels Høeg
Valerian Onitiu

2) Skakbladet 08/1924
P0000971
(4+3)
Letzter Zug?
R: 1. Kb4xSa3
play all play one stop play next play all
Keywords: Type A, Last Move? (KxS), Economy record, Length Record
Genre: Retro
Reprints: A07a Phénix 282, p. 11060, 02/2018
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-26 more...
4 - P0000976
Niels Høeg
15) Skakbladet 08/1924
P0000976
(6+2)
Letzte zwei Einzelzüge?
R: 1. La2xSb1 Sc3-b1
play all play one stop play next play all
Originalforderung: Hvad var de 2 sidste Traek?
Zvi Mendlowitz: In fact, the last TWO single moves are completely determined. This is the most economical "type A" retro which achieves this. (2004-12-11)
Henrik Juel: Translation of the original stipulation:
Last two (single) moves? (2015-2-6)
comment
Keywords: Type A, Last Move? (LxS), Length Record
Genre: Retro
Reprints: 224 FIDE Album 1914-1944/III 1975
RA49 diagrammes 24 11-12/1976
A8 Length Records in Last Single Moves? , p. 4, 11/2009
A08 Phénix 282, p. 11060, 02/2018
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-25 more...
5 - P0001053
Niels Høeg
Skakbladet 1923
P0001053
(2+1)
Welches war der letzte Zug?
R: 1. Bh4-h5+
play all play one stop play next play all
Keywords: Type C, Last Move? (B-), Economy record, Kindergarten Problem, Length Record (ex-aequo)
Genre: Retro
Reprints: Die Schwalbe 1979
C/27 feenschach 159 04-06/2005
C3a Length Records in Last Single Moves? , p. 10, 11/2009
(69) Die Schwalbe 244 08/2010
C03a Phénix 282, p. 11066, 02/2018
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-26 more...
6 - P0001056
Niels Høeg
Skakbladet 1923
P0001056
(2+1)
Welches war der letzte Zug?
R: 1. Bc7-c8=L+
play all play one stop play next play all
A.Buchanan: In Eigenartige Schachprobleme, this one is attributed to Branko Pavlovic, Sahovski Vjesnik, 1950. Don't know if this is typo or anticipation. (2016-7-18)
Henrik Juel: In ES this one is also included, as 1.47C
The difference is the stipulation question
Pavlovic asks: First move by bishop? (2016-7-18)
A.Buchanan: So how best to represent this in PDB? It seems silly to have a separate problem for what is at best a version of a very tiny problem. There are a few other simplistic cases where a "Last Move" problem functions as a "First Move". Best maybe to keep one entry, and indicates Pavlovic's version changed the stipulation slightly. (2016-7-18)
comment
Keywords: Type C, Last Move? (B-=L), Promotion (L), Economy record, First Move? (UWL0), Aristocrat, Length Record (ex-aequo)
Genre: Retro
Reprints: Sahovski Vjesnik 1950
C/42 feenschach 159 04-06/2005
C3b Length Records in Last Single Moves? , p. 10, 11/2009
1.47C Eigenartige Schachprobleme , p. 190, 2010
2.65 Eigenartige Schachprobleme , p. 204, 2010
C03b Phénix 282, p. 11066, 02/2018
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-26 more...
7 - P0001102
Niels Høeg
Skakbladet 04/1916
P0001102
(3+1)
Last 3 single moves?
R: 1. dxe6ep+ e7-e5 2. d4-d5+
play all play one stop play next play all
Frank Müller: Erscheinungsmonat korrigiert.
Originalforderung lautet: Welches waren die beiden letzten Züge von Weiß? (2013-12-25)
Henrik Juel: In Niels Høegs article 'On the basic elements of retrograde analysis' (Om grundelementerne i retrograd analyse) in Dansk Skakproblemklubs årsskrift 1939 the stipulation is 'How did the position arise?' (Hvorledes er stillingen fremkommen?) (2014-1-6)
comment
Keywords: En passant, Last Move? (Bep), Type C, Economy record, Last Moves? (3), Length Record (ex-aequo)
Genre: Retro
Reprints: (XI) Problem 7-9 03/1952
(B) Problem 21-22 03/1954
11 L'Echiquier de France 01/1957
225 FIDE Album 1914-1944/III 1975
RA19 diagrammes 16 08/1975
feenschach 46 04-06/1979
89 100 Classics of the Chessboard 1983
(2) diagrammes 15 07-09/1994
(A) Rochade 09/1996
Outrageous Chess Problems 2005
C/53 feenschach 159 04-06/2005
76 Der Blick zurück 2006
C4a Length Records in Last Single Moves? , p. 10, 11/2009
C04a Phénix 282, p. 11066, 02/2018
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-26 more...
8 - P0001132
Niels Høeg
Svenska Dagbladet 1923
P0001132
(13+8)
Ergänze die wD so, daß Weiß in einem Zug mattsetzen kann!
+wDc6, dann 1. Df3#
R: 1. ... Kf2-g3 2. Lb8-a7+ Kg3-f2 3. dxe6ep+ e7-e5 4. La7-b8+ Kf2-g3 5. Lb8-a7+ Ke2-f2 6. c4xBd5+
play all play one stop play next play all
Keywords: En passant, Add pieces (D), Pendulum
Genre: Retro
Reprints: 8 Europe Echecs 10 06/1959
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1997-6-20 more...
9 - P0001438
Niels Høeg
The Problemist 1935
P0001438
(14+8)
Wer gewinnt?
1. ... bxc2#?
1. Tc1+ Kxa2 2. Sc6 fxe1=D+ 3. Txe1 ... 4. Sb4#

R: 1. ... Ka1-b1 2. Sc6-b8 Kb1-a1 3. Sd8-c6 Ka1-b1 4. Se6-d8 Kb1-a1 5. Sf4-e6 Ka1-b1
6. Sh3-f4 Kb1-a1 7. Sf4xBh3 Ka1-b1 8. Sg2-f4 Kb1-a1 9. Se3-g2 Ka1-b1
10. Sb6-a4 Kb1-a1 11. Sc4-b6 Ka1-b1 12. Sa3-c4 b4-b3 13. Sb1xBa3 a4-a3
14. Tc1-c2 a5-a4 15. Kc2-d1 a6-a5 16. Kd3-c2 b5-b4 17. Dd1-e1 h4-h3
18. Db3-d1 h5-h4 19. Te1-c1 h6-h5 20. Sd1-e3 h7-h6 21. Sa3-b1 Kb1-a1
22. Sc4-a3 Ka1-b1 23. Kd4-d3 Kb1-a1 24. Da3-b3 Kc1-b1 25. Sa5-c4 Kc2-c1
26. Sb3-a5 Kb1-c2 27. Sc1-b3 Ka1-b1 28. Se3-d1 Kb1-a1 29. Sg4-e3 Kc2-b1
30. Sb3-c1 d6-d5 31. Ta1-e1 d7-d6 32. Tb1-f1 Kd1-c2 33. Sc1-b3
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8/2bbb1bb/b7/1b6/3K2S1/D1B2B2/BB1BBb1B/TTSk2Lt (14+10)
A possible proof game from this intermediate position is:
1. Sb3+ Kc2 2. Tf1 h6 3. Tae1 h5 4. Sc1 Kb1 5. Se3 Ka1 6. Sd1 Kb1 7. Sb3 Kc2 8. Sa5 Kc1 9. Db3 Kb1 10. Kd3 Kc1 11. Sc4 Kb1 12. Sa3+ Ka1 13. Sb1 h4 14. Se3 h3 15. Tc1 d6 16. Dd1 d5 17. De1 a5 18. Kc2 a4 19. Kd1 a3 20. Tc2 b4 21. Sxa3 b3 22. Sb5 Kb1 25. Sb8 Ka1 28. Sxh3 Kb1 32. Sa4 Kb1
Black captured the white bishops on c1 and f1. White captured Lf8 on f8 and g2xf3 and promoted his f-pawn on b8 to L, which was brought to g1, implying that a7, b6, and b7 are unoccupied. Between moves 13 and 21 white has no time for a tempo move, and after this neither side can change the tempo, so white has the move in the problem position and wins.
Henrik Juel: Moving Sb8 to b4 would allow a more contemporary stipulation: #1 (who?)
with the solution: 1.Tc1#, not 1... bxc2? (2016-10-12)
Henrik Juel: If you prefer retroplay, the plan is to uncapture black pawns on h3 and a3, screen with a knight on b1, retract Tc1-c2, extract Kd1 and De1, retract Te1-c1, screen with the other knight on d1, retract the first knight to c1, extract Sd1, hide the white rooks on a1 and b1 while black king waits on c2, and then he can get out via g2 and h3. The details might be
-0... Ka1 -1.Sc5 Kb1 -2.Se4 Ka1 -3.Sg5 Kb1 -4.Sh3 Ka1 -5.Sf4xPh3 Kb1 -6.Sg2 Ka1 -7.Se3 Kb1 -8.Sc6 Ka1 -9.Sa7 Kb1 -10.Sb5 Ka1 -11.Sa3 b4 -12.Sb1xPa3 b5 -13.Tc1 a4 -14.Kc2 a5 -15.Kd3 a6 -16.De1 d6 -17.Db3 d7 -18.Te1-c1 h4 -19.Sd1 h5 -20.Sa3 Kb1 -21.Sc4 Ka1 -22.Kd4 Kb1 -23.Da3 Kc1 -24.Sa5 Kc2 -25.Sb3 Kb1 -26.Sc1 Ka1 -27.Se3 Kb1 -28.Sg4 Kc2 -29.Sb3 h6 -30.Ta1 h7 -31.Tb1-f1 Kd1 -32.Sc1 (2016-10-12)
more ...
comment
Keywords: Promotion (L), Whose move?
Genre: Retro
Reprints: 220 FIDE Album 1914-1944/III 1975
312 Europe Echecs 213/214 10/1976
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2016-10-21 more...
10 - P0001700
Niels Høeg
Die Schwalbe 07/1933
P0001700
(10+11)
#3
1. Dxd6 Lb7 2. 0-0 (0-0-0?)
The white and black castlings are mutually exclusive, but this fact seems impossible to prove elegantly. One can consider all the cases of queen promotion by the white f-pawn on b8 or c8 and show that none of them preserves both castling rights.
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A.Buchanan: I would rather say it's amazing that such an open position supports the lengthy & delicate reasoning chain required. Bravo Mr Høeg! (2010-3-1)
Henrik Juel: Here is an attempt to recreate my compatriots reasoning.
Assume that White may castle; then Black captured [Ta1, Lc1, Dd1] with knights on row 1 and [Sb1, Lf1, Sg1] with pawns on a6, d6, and g6, and made no other captures, so g2xh3 may not be retracted before [Lf1] has been uncaptured on a6 or g6 and brought home; and Df4 is [Pf2] promoted.
Let us try to preserve Black's castling right; then the promotion took place on b8 or c8.
1. If the promotion happened on b8, all missing black men were captured by white pawns, so e7xSd6 may not be retracted before [Lc8] has been uncaptured somewhere and brought home, and f6xg6 may not be retracted before [Th8] has been uncaptured somewhere and brought home (to preserve Black's castling right). The retro play is -1... Lb7 -2.Db4 Lc8 -3.Db8 b7xa6 -4.c7xb8=D and Black must retract his king, since -3.Db8 Lb7 -4.c7xb8=D leads to white retro-stalemate.
2. If the promotion happened on c8, a black man must be uncaptured to screen on d8.
The retro play -1... f7xLg6 -2.Le4 Lb7 -3.Lg2 Lc8 -4.Lf1 Lb7 -5.g2xDh3 Df3 -6.Dd4 Df6 -7.Db6 De7 -8.Dc7 Dd8 -9.Dc8 Df6 -10.D=c7 e7xSd6 (the only way to prevent white retro-stalemate) is illegal because of [Lf8].
Since -1... b7xLa6 prevents promotion on c8, the screening black man must be uncaptured by Df4, and all the other missing black men were captured by white pawns, so e7xd6 and f7xg6 may not be retracted prematurely. A retro play like -1... Lb7 -2.Dd4xLf4 Lg5 -3.Db6 Le7 -4.Dc7 Ld8 -5.Dc8 Le7 -6.D=c7 f7xLg6 prevents [Th8] from coming home without ruining the castling right.
We conclude that if White may castle, Black may not.
1.Dxd6 thr. 2.Tf1 and 3.Tf8#; if Black prepares to castle, his hopes are thwarted by white castling, 1... Lb7 2.0-0! and 3.Tf8# (2012-8-1)
Mario Richter: To make Henrik's analysis complete, one should also mention the following possibilities:

case: promotion on b8
R: 1. ... Lb7-c8 2.Db4-f4 Lc8-b7 3.Db8-b4 c7-c6 4.b7-b8=D and Black is retro-stalemated (under the assumption that bK and Ra8 never moved).

case: promotion on c8
The shield can also be provided by a white piece, the 'best' try is R: 1. ... e7xSd6 2.Sf7-d6+ Lb7-c8 3.Sd8-f7 Lc8-b7 4.Dc7-f4 Lb7-c8 5.Dc8-c7 and again Black is retro-stalemated. ('best# try, because e7xSd6 already clears the square d6 for a later retraction d6xc7).
A last point: one could also mention that it can be easily shown that if White didn't castle, then Black still has the ability to castle (so that after 1.Dxd6 Lb7 2.Tf1? isn't sufficient because of the defense 2. ... 0-0-0!) (2012-8-2)
comment
Keywords: Partial Retro Analysis (PRA), Castling (wksg), Castling, mutual exclusive, Promotion (D)
Genre: Retro
Reprints: 172 32 personaggi e 1 autore 1955
(C) Problem 37-40 09/1956
38 L'Echiquier de France 07/1958
(13) Problem 144-147 12/1971
(VI) Die Schwalbe 27 06/1974
217 FIDE Album 1914-1944/III 1975
RA127 diagrammes 46 07-08/1980
(20) Die Schwalbe 68 04/1981
(F) diagrammes 15 07-09/1994
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-10-13 more...
11 - P0001701
Niels Høeg
Die Schwalbe 1935
P0001701
(2+10)
Ergänze 10 wTT, so daß Schwarz in 1 Zug mattsetzen kann!
Add white rooks on a1, a2, a7, b4, c1, c2, c5, c7, d7, and f7. Black
mates by Dxb4#.
White pawns captured axb, b6xa7 twice (say), hxg, and g6xf7 twice. Black pawns cross-captured c6xd5 and d7xc6, and f6xe5 and e7xf6. At most 4 promoted white rooks (from either side of the board) could have escaped before the black pawn barrier closed.
play all play one stop play next play all
Keywords: Add pieces (TTTTT)
Genre: Retro
Reprints: 345 FIDE Album 1914-1944/III 1975
(3) feenschach 143 08-10/2001
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-3 more...
12 - P0001754
Niels Høeg
63 The Problemist FCS 3 01/12/1930
P0001754
(12+14)
Schwarz und Weiß nehmen 40 Züge zurück, dann #1
K1kt4/Bbt1bb1l/dDTb1Bb1/lTb2b2/1b6/B7/3BB1BB/5LT1
To reach this position white pawns captured bxSa and c6xSd7 and promoted d7-d8=T, while black pawns captured axb and h7xg6xf5. Now white can mate by Txc7# or the problem position may be reached in 40.0 forward moves: 1.Th1 Tdd7 2.Tg1 Kd8 3.Kb8 Ke8 4.Ka8 Kf8 5.Kb8 Kg8 6.Ka8 Kh8 7.Kb8 Lg8 (white keeps pendling his king between a8 and b8; black continues:)
8 Kh7- h6- g5- f4- e4- d4- c4- b3- c2- d1- e1- f2xg1- f2- e1- d1- c2- b3- c4- d4- e4- f4- g5 31 Kh6-h7-h8 34 Lh7 35 Kg8-f8 37 Lg8 38 Ke8-d8 40.Ka8 Kc8.The play is not completely free of duals.
play all play one stop play next play all
Keywords: Help retractor
Genre: Retro
Reprints: The Problemist 1939
329 FIDE Album 1914-1944/III 1975
(17) Die Schwalbe 68 04/1981
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2018-1-24 more...
13 - P0001852
Niels Høeg
The Chess Amateur 1928
P0001852
(4+2)
Schwarz nimmt 1 Zug zurück, dann h#1
wDU=Grashüpfer
wSU=Nachtreiter
R: 1. Ke7xBd6, dann 1. Kf8 Nh4#
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After the retraction black king is subjected to a quadruple check (preceded by e5xd6ep)
Keywords: En passant, Help retractor
Pieces: du = Grasshopper (G), su = Nightrider (N)
Genre: Retro, Fairies
Reprints: 103 Ultimate Themes 1938
312 FIDE Album 1914-1944/III 1975
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2015-2-9 more...
14 - P0001855
Niels Høeg
The Chess Amateur 01/1924
T. R. Dawson gewidmet
P0001855
(10+12)
#1 vor 2
VRZ, Typ Hoeg
R: 1. e4-e5 Kb8xTa8 2. Ta7-a8+, dann 1. Dxb7#
R: 1. e4-e5 Ka7xTa8 2. Tb8-a8+, dann 1. Dxb7#
R: 1. e4-e5 Sa1xTc2,Se1xTc2,Se3,Tc2,Sd4xTc2 2. Tb2-c2, dann 1. Dxb7# (nicht 1.- Sb4xc2??)
R: 1. e4-e5 Td1xLd2 2. Le3-d2, dann 1. Dg8#
R: 1. e4-e5 Se3xTf1,Sg3xTf1 2. Tb1-f1, dann 1. Dxb7#
R: 1. e4-e5 Tg1xLh1 2. e3-e4, dann 1. Dxb7#
R: 1. e4-e5 Lg1xLh2 2. f2-f4, dann 1. Da4#
R: 1. e4-e5 Lg3xLh2 2. Lg1-h2, dann 1. Dg8#
R: 1. e4-e5 e6xSf5 2. Sd6-f5, dann 1. Dxb7#
R: 1. e4-e5 g5xLh4 2. Lf2-h4, dann 1. Dg8#
R: 1. e4-e5 f7xTg6 2. Db6-b3, dann 1. Tg8# (nicht 1.- g7-g6??)
play all play one stop play next play all
White pawns have captured all missing black men, so black is not allowed to supplement anything when a white officer retracts. Black pawns have captured only 5 of the 6 missing white officers (including axb), so white may supplement T, L, or S when black retracts.
Keywords: Defensive Retractor, Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (4) On Retraction Chess Problems 1927
332 FIDE Album 1914-1944/III 1975
RA87 diagrammes 32 03-04/1978
(1) feenschach 49 01-03/1980
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2015-5-13 more...
15 - P0001897
Niels Høeg
v Eskilstuna-Kuriren 1922
P0001897
(11+11)
Schwarz nimmt 1 Zug zurück, dann h#1
R: 1. Tg7-h7+ dann 1. Tf7 Sd7#
Pawns have captured all missing men except the queen bishops.
Further retro play R: 1. Kh7-h8 Tg8xLg7+ 2. Lf6-g7+ Dd8-e7+ (e.g.)
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Version
comment
Keywords: Help retractor
Genre: Retro
Reprints: 320 FIDE Album 1914-1944/III 1975
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2013-7-19 more...
16 - P0001965
Niels Høeg
Eskilstuna-Kuriren 1946
P0001965
(12+14)
a) Welches ist die minimale Anzahl Züge des sK?
b) Schwarz und Weiß nehmen 2 Züge zurück, dann h#1.5
White captured fxSe and Lf8 on f8; Sa8 is the a-pawn promoted on a8. Black captured a7xb6xc5, g7xf6, and h3xLg2; La7 is the h-pawn promoted on g1.
a) Black king made at least 29 moves:
1. 0-0 2. Kh7 ... 8. Kf1 ... 13. Ka3 ... 18. Ka8 ... 25. Kh7 ... 29. Kd6
b) R: 1. Df2-e1+ b3-b4 2. Lb8-a7 a7-a8=S, then 1.- g5 2.e5 Dxd7#
play all play one stop play next play all
Keywords: Promenade (K)
Genre: Retro
Reprints: 1424 FIDE Album 1945-1955 1964
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-3 more...
17 - P0002031
Niels Høeg
20 Retrograde Analysis 1915
P0002031
(16+10) C+
Welches waren die letzten 13 Einzelzüge?
R: 1. Td8-d7+ d7-d6 2. fxe6ep+ e7-e5 3. f4-f5+ Kd6-c7 4. bxc6ep+ c7-c5 5. b4-b5+ Ke6-d6 6. gxf6ep+ f7-f5 7. g4-g5+
play all play one stop play next play all
The record number of en passant captures in retroplay.
Keywords: En passant (3), Last Moves? (13)
Genre: Retro
Computer test: RSP 1.2
Reprints: 26 L'Echiquier de France 08/1957
226 FIDE Album 1914-1944/III 1975
(18) Die Schwalbe 68 04/1981
Die Schwalbe 120 12/1989
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-10-31 more...
18 - P0002033
Niels Høeg
Tidskrift för Schack 03/1904
P0002033
(15+12)
Welches waren die letzten 3 Züge von Weiß?
R: 1. e7xDf8=T# Kd8-e8 2. d6xSe7+ Sd5-e7+ 3. Df7-f6+
Tg8 is the white a-rook, Tc7 is the black h-rook, and both passed g3 or g4 before the barrier was closed. The black a-rook was captured on a8 or b8, the white h-rook was captured south-west of the barrier.
The try R: 1.Tf7xDf8# Kd8-e8 2.Te7-f7+ Ke8-d8 3.Tf7-e7+ fails because of perpetual uncheck.
play all play one stop play next play all
Frank Müller: In 150 Schachkuriositäten wird die Aufgabe wie folgt zitiert:
1) Welches waren die letzten drei Züge von Weiß?
2) Statt dessen zieht Weiß und setzt in drei Zügen auf e8 mat. (2012-8-11)
comment
Keywords: cut off part of the board, Last Moves? (5), Promotion
Genre: Retro
Reprints: 50 150 Schachkuriositäten 1910
21A Retrograde Analysis 1915
Input: Gerd Wilts, 1995-6-3
Last update: Frank Müller, 2012-8-11 more...
19 - P0002034
Niels Høeg
49 150 Schachkuriositäten 1910
P0002034
(14+13)
Welches waren die letzten 3 Züge von Weiß?
R: 1. Ld8-f6+ Kh6xSg7 2. g4-g5+ Kg5-h6 3. e7xTd8=L+
The diagram position shows that both white rooks are original, because no rook could have crossed the black pawn barrier. Lc1 must have been captured on c1 allowing Ta1 to escape from the corner, so Lf6 is a pawn promoted after say e5xSd6xTe7xTd8=L.
play all play one stop play next play all
klären: Von Problematicus (Max Weis) in 150 Schachkuriositäten, S. 25, Nr. 49. Dieses Buch erschien bereits 1910! Urdruck kann also nicht 1914 sein! (VF)
Henrik Juel: The publication year is probably 1904, compare P0002033 (2004-4-26)
Frank Müller: In 150 Schachkuriositäten mit folgender Forderung zitiert:
a) Welches waren die letzten drei Züge von Weiß?
b) Weiß nimmt diese drei Züge zurück und setzt dann in drei Zügen matt
Lösung: R: 1. e7xTd8=L Kg5-h6 2. g4-g5+ Kh6xSg7 3. Lf6#
V: 1. e7=Td8=L (oder D) Kh6 2. g5+
1. ... f6 2. De3+ (2012-8-11)
comment
Keywords: cut off part of the board, Last Moves? (5), Promotion
Genre: Retro
Reprints: Tidskrift för Schack 03/1914
21B Retrograde Analysis 1915
Input: Gerd Wilts, 1995-6-3
Last update: Frank Müller, 2012-8-11 more...
20 - P0002082
Niels Høeg
I Skakbladet 12/1906
P0002082
(9+11)
#2
1. Td1 (1. 0-0-0?)
Some black pawn must have promoted to rook. This has ruined the white castling (h2-h1=T or h2xg1=T requires too many captures by black pawns).
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Originalforderung: Mat i 2 Træk. Er disse Opgaver (diese + P1277266) korrekte under alle partimæssige Forutsætninger?

Originallösung: I I. er et at de sorte T. en forvandlet Bd. (Th8 kan ikke være kommet ud), og under Forudsætning af, at Hvid K. og T. ikke havde været flyttede, maatte Bonden have passeret h2 før Forvandlingen; men saa Fald maatte de sorte Bønder have slaaet 8 hvide Brikker og der mangler kun 7.
comment
Keywords: Cant Castler, Castling (wg), Promotion
Genre: Retro
Reprints: 47A Retrograde Analysis 1915
Input: Gerd Wilts, 1995-6-3
Last update: Mario Richter, 2013-9-5 more...
21 - P0002101
Niels Høeg
59 Retrograde Analysis 1915
P0002101
(11+10)
#2
1. hxg6ep
Proving the legality of the en passant key requires realizing that the
missing white bishop was captured by a black pawn on g4 or g6.
R: 1.Ke8-e7? e7xd8=T+ would require too many pawn captures.
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Keywords: En passant, En passant as key
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1997-6-20 more...
22 - P0002178
Niels Høeg
Deutsches Wochenschach 02/06/1907
P0002178
(14+11)
#3 (RV)
1) R: 1. f7-f5: 1. gxf6ep Txa1 2. Sg7+, 1. ... Txh5+ 2. Dxh5+
2) R: 1. d7-d5: 1. cxd6ep Ta5+ 2. Txa5
3) R: 1. T-a8: 1. Sg6
4) R: 1. T-h8: 1. Sc6
5) R: 1. K-e8: 1. Sg6/1. Sc6
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Henrik Juel: The solution text above should be construed to sit in two columns, reading: If last move was f7-f5, White mates in three by 1.gxf6ep Txa1 2.Sg7+, 1... Txh5+ 2.Dxh5+; if last move was d7-d5, White mates in three by 1.cxd6ep Ta5+ 2.Txa5; etc. (2004-4-26)
comment
Keywords: En passant, Partial Retro Analysis (PRA), Castling (sksg)
Genre: Retro
Reprints: 99 Retrograde Analysis 1915
34 32 personaggi e 1 autore 1955
(D) Die Schwalbe 13 02/1972
RA65 diagrammes 27 05-06/1977
(19) Die Schwalbe 68 04/1981
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-3 more...
23 - P0004088
Niels Høeg
The Chess Amateur 1923
P0004088
(9+15)
Weiß 1 Zug zurück, dann #1
R: 1. Th8-d8, dann 1. Dd1#
Ksl5/lttb1bb1/Tbb3B1/db6/k5b1/b7/BBBBB3/T1L5 (10+15)

This intermediate position was reached after white captured fxSe and
promoted on e8 and h8, while black captured a7xb6 (not a6xb5 which
cannot explain the north-west cage), e7xd6xc5xb4xa3, and h5xLg4.
The problem position is reached by:
1.b4 f6 2.Lb2 f5 3.Th1 f4 4.Th8 f3 5.Lf6 f2 6.Lg5 g3 7.Lh6 gxh6
8.g7 h5 9.g8=D h4 10.Dd5 h3 11.Dh1 h2 12.c3 g2 13.Td8
Other similar arrangements with one white and three black pawns on the f-, g-, and h-files are either illegal or cannot lead to the problem
position.
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Keywords: Help retractor
Genre: Retro
Reprints: Thema Danicum 99 2000
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2003-1-18 more...
24 - P0004105
Niels Høeg
Die Schwalbe 10/1935
P0004105
(10+10)
Ergänze einen weißen Springer, dann #2
(Dodaj jos jednog bijelog skakaca i mat u 2 poteza)
+ wSh8, 1.Sxf7 2.Sf2#
Black pawns made four captures to help the white pawns advancing towards promotion, say b6xa5, a7xb6 and g6xh5, h7xg6. The white a-, b-, ..., h-pawns captured 1, 0, 1, 1, 2 (or 2, 1), 1, 0, 0 times, respectively, explaining all missing black men. One of the black bishops is the g-pawn promoted on h1. White promoted h7-h8=S only after black captured h7xg6, so Sh8 could not have escaped from the corner. White could promote all his pawns using only five pawn captures, but this would leave white knights on a8 and h8. Adding the white knight on a8 instead of h8 is legal, but does not allow white to mate in two.
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Keywords: Add pieces, Non-standard material
Genre: Retro
Reprints: Problem 5-6 12/1951
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-8-9 more...
25 - P0004347
Niels Høeg
6868 The Fairy Chess Review , p. 45, 08/1946
P0004347
(11+11)
#2
1. Tf1
not 1. 0-0?
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If white could castle, black pawns must have captured all missing white men by dxc, fxg, hxg, and (say) exfxg. The white a-, b-, and c- (or g-) pawns must have captured to promote. If only these white pawn captures happened, white would have to promote 5 pawns on dark squares. 2 more pawn captures are possible, which might lower the number of dark promotion squares to 3. But in the position only 2 promotions were on dark squares, so white castling is illegal.
K.Fabel: Eine rückschauende Betrachtung (die gefürchtete Retroanalyse) ergibt, daß im Laufe der vielen Bauernumwandlungen der weiße König oder der weiße Turm schon gezogen haben muß.
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comment
Keywords: Castling, Promotion (ttttLLLL), Non-standard material
Genre: Retro
Reprints: Problem 101-102 09/1966
9 Kurioses Schach 1975
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2015-6-12 more...
26 - P0005412
Niels Høeg
Skakbladet 1943
P0005412
(2+1)
Weiß nimmt 1 Zug zurück, dann #2
R: 1. b7xSa8=S, dann 1. b8=D
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Keywords: Help retractor, Promotion in the retro play, Promotion in forward play
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1997-6-12 more...
27 - P0006046
Niels Høeg
8474 The Fairy Chess Review 28/11/1949
P0006046
(11+11)
Schwarz nimmt 1 Zug zurück, dann h#1
R: 1. ... Ka3-b2, dann 1. Ka4 Lb5#
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The pawns have captured 8 times to get around each other, plus 2 times to create the square color imbalance (6 light-squared white bishops and only 4 black ones). Thus all captures were done by pawns, so retractions like Ka3xb2, Kb3-b2, or Kc2-b2 are illegal.
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comment
Keywords: Help retractor, Non-standard material, Symmetrical position, Asymmetrical solution
Genre: Retro
Reprints: 1494 FEENSCHACH 10/1952
7 Rund um das Schachbrett 1955
(267) feenschach 52 10-12/1980
Thema Danicum 94 1999
H34 ASymmetrie 2013
Input: Gerd Wilts, 1995-7-16
Last update: Alfred Pfeiffer, 2017-9-27 more...
28 - P0006349
Niels Høeg
1151 Stella Polaris 1967
1. Preis
P0006349
(12+14)
Weiß nimmt 1 Zug zurück, dann #1
R: d3xSc4+, dann 1. a4#
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If last move were d3xLc4+, all black captures must have happened before black queen and king could leave the 8th row; but then the south-west cage is impossible, because black king could not reach c1. In the solution white captured Lc8 on c8, and the cage was formed with (say) white queen on b1.
This problem was published posthumously, Hoeg died in 1951.
comment
Keywords: Help retractor
Genre: Retro
Reprints: 9499 FEENSCHACH 01-02/1970
Input: Gerd Wilts, 1995-9-10
Last update: Alfred Pfeiffer, 2014-11-25 more...
29 - P0008587
Niels Høeg
Skakbladet 1943
P0008587
(2+1)
Weiß nimmt 1 Zug zurück, dann #2
R: 1. b7xSa8=L, dann 1. b8=D Kh6,Kh4 2. Dh8,Dh2#
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Duplicate Diagram: P0005411

Keywords: Promotion in the retro play
Genre: Retro
Input: Gerd Wilts, 1997-3-8
Last update: Alfred Pfeiffer, 2015-5-13 more...
30 - P0008782
Niels Høeg
Eskilstuna-Kuriren 1918
P0008782
(10+15)
#3
1. dxc6ep+ Kc7/Kc8 2. Lxf4+/cxb7+
Pawns captured all missing men. White captured the dark-squared black bishop on f4. Black captured hxg before the white h-pawn could promote. The black dxc capture was d4xc3, not say d6xc5. An arbitrary last move results in perpetual uncheck, R: 1. Kb5-a5 Ta4-b4+ 2. Ka5-b5 Tb4-a4+. Last move must have been c7-c5, R: 1. Kb5-a5 Ta4-b4+ 2. Kc5-b5.
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Keywords: En passant as key
Genre: Retro
Reprints: Skakopgaven 1942
Input: Gerd Wilts, 1997-6-20
Last update: Gerd Wilts, 2005-12-3 more...
31 - P0008783
Niels Høeg
1418 Eskilstuna-Kuriren 08/12/1923
P0008783
(4+3)
#1 vor 1
VRZ, Typ Hoeg
R: 1. e7xDd8=S, dann 1. Lg5#
R: 1. c7xDd8=S? fails because black supplements a queen or a bishop on d8.
R: 1. d7-d8=S?? leads to black retrostalemate.
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Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (1) On Retraction Chess Problems 1927
Schackproblemet 1928
Input: Gerd Wilts, 1997-6-20
Last update: Alfred Pfeiffer, 2015-5-13 more...
32 - P0008784
Niels Høeg
The Chess Amateur 07/1926
P0008784
(1+1)
Längste BP ohne Schach. Welches war der letzte Zug?
R: 5899. Kg2xTh1
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The game ends after 50 consecutive moves without captures or pawn moves (loss of castling right is not included here), or when there is not enough material to mate (say K-K or K-KS). There are 30 captures and 96 pawn moves (including 8 pawn captures) available, so the longest game seems to last (30+96-8)x50=5900 moves. This cannot be achieved because of the move-loss when the draw-preventing move shifts between white and black. Niels Høeg believed that 2 moves were lost and stated the solution as 5898.- Kb7xTa8. Karl Fabel later showed that only 1.5 moves need be lost.

Since 1926, there have been some relevant innovations to rules and conventions
(1) 50 move rule applies only to retro compositions, and will trigger automatically (no issue with writing down the move). (Codex 1953?)
(2) Removal of rules about draw by insufficient material (Laws 1997)
(3) Dead position rule introduced (Laws 1997)
(4) Dead position rule applies only to retro compositions (Codex 2015)
(5) 75 move rule introduced (Laws 2014)

This is certainly a composition rather than a question about over the board chess. And it is certainly a retro composition. So the 50 move rule will dominate the 75 rule. The standard interpretation of interaction between 50 move rule and Dead Position in compositions is that Dead Position assessment *is* aware of looming automatic draw by 50 moves. (Note there is a similar assessment for interaction between Dead Position and Draw by Repetition.)

So we can argue that the game cannot last to 5898.5 moves, because the final move leads to a mandatory draw: either the king captures the last officer, or the king avoids the capture and the game ends in draw under the 50 move rule. So the position is dead at 5898.0. But even 5898.0 is too long for the diagram position with the kings so far apart. In the alternate reality if the last capture of a rook does not take place, there must be sufficient moves left for the kings to come together so that rook can be mated. This will take at least 6.0 moves.

There is also still an ambiguity in the rules as to whether checkmate overrides draw by 50 moves. This is explicitly mentioned in the 75 move rule, but not in 50 move rule. I assume that checkmate *does* take priority.

Or does a valid problem only exist in the context of the rules and conventions that pertained at the time of its composition? The Codex does not opine on this general point.

Duplicate Diagram: P1101148, P1189676, P1191185, P1304589

Keywords: Longest Proof Game, Last Move?, only Kings, Non-Unique Proof Game, Dead Position, 50 move rule, Conditional problem, Type A
Genre: Mathematics, Retro
Reprints: Schackproblemet 1928
Schach und Zahl 1966
Input: Gerd Wilts, 1997-6-20
Last update: A.Buchanan, 2017-2-17 more...
33 - P0008785
Niels Høeg
Stella Polaris 09/1967
P0008785
(11+10)
Ergänze den sK, dann h#1
a) +sKc7: 1. Kxd8 La5#
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Pawns have captured 8 times to get around each other and 2 more times to create the square color imbalance (4 light-squared white bishops and 6 black ones). Last move was d7-d8=L+. Adding black king on c8 or d7 implies that last move was Lxe6+, but all captures were made by pawns.
posthum veröffentlicht
comment
Keywords: Add pieces
Genre: Retro
Input: Gerd Wilts, 1997-6-20
Last update: Alfred Pfeiffer, 2015-5-13 more...
34 - P0008808
Niels Høeg
1419 Eskilstuna-Kuriren 08/12/1923
P0008808
(8+2)
#1 vor 2
VRZ, Typ Hoeg
R: 1. b7-b8=T Ka8xLa7 2. b6-b7+, dann 1. Lc6#
R: 1. b7-b8=T Kb8xTa7 2. Lc6xBd7,Lc6x~d7, dann 1. Ta8#
R: 1. b7-b8=T Ka6xLa7 2. b6-b7, dann 1. Lc8#
R: 1. b7-b8=T Kb6xTa7 2. c2-c3, dann 1. b8=D#
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In the first variation white might legally supplement a pawn, but then his final retraction would lead to an illegal pawn position, R: 1. ... Ka8xBa7? 2. b6-b7+??
comment:
This is the first published type Høeg defensive retractor.
The above may not be the best way of presenting the solution, because it suppresses the timing of white's and black's decisions:
1. White chooses a white man and decides from where it came,
2. Black decides which black man (if any) white just captured,
3. Black chooses a man and decides from where it came,
4. White decides which white man (if any) black just captured,
5. White chooses a white man and decides from where it came,
6. Black decides which black man (if any) white just captured,
7. White can mate with a forward move.
(In this problem black has no choice in step 2).
Variations arise from the various possibilities in steps 2, 3, and perhaps 6.
Duals (if any) arise from more than one possibility in steps 4, 5, and
perhaps 7. (Høeg felt that white had won the retraction game after step 6, if white now could mate).
For a problem in 3 moves four more steps are added before step 7.
Here is an alternative presentation of the solution:
-1 b7 Ka8(L) -2 b6, 1 Lc6 [not -1 - Ka8(B?)],
-1 - Kb8(T) -2 Lc6(any), 1 Ta8,
-1 - Ka6(L) -2 b6, 1 Lc8,
-1 - Kb6(T) -2 c2, 1 b8D.
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comment
Keywords: Promotion in the retro play, Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (2) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Alfred Pfeiffer, 2018-6-27 more...
35 - P0008809
Niels Høeg
1420 Eskilstuna-Kuriren 08/12/1923
P0008809
(9+9)
#1 vor 3
VRZ, Typ Hoeg
R: 1. Kf6xSf5 Sg7xSf5+ (black has no other legal possibilities)
2. Sd6-f5 (by now all missing black men were captured by pawns)
2. ... Se6xDg7 3. Kf5-f6 and Dxb7#
2. ... Sf5xDg7 3. Sb5-d6 and Dxh8#
2. ... Ka7xDa8 3. Dc8-a8+ and Dxb7#
2. ... Kb8xDa8 3. Da6-a8+ and Dxb7#
2. ... SxDg5 3. Dd5-g5 and Dxb7#
2. ... LxDg2 3. f2-f3 and Dxb7#
2. ...Sh3xDg1 3. Db1-g1 and Dxb7#
2. ... f2xDg1=S 3. Db1-g1 and Dxb7#
2. ... d3xDe2 3. Db2-e2 and Dxb7#
comment:
This is a corrected version of the original publication. T. R. Dawson commented: ". . a marvellously sustained exhibition of one idea repeated in manifold guise. The opening manoeuvre is clever and the
two plays from the black Sg7 very neat".
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Keywords: Promotion in the retro play, Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (3) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 2004-6-10 more...
36 - P0008810
Niels Høeg
473v The Chess Amateur 03/1924
P0008810
(11+7)
#1 vor 3
VRZ, Typ Hoeg
Black pawns have captured all missing white men with exfxgxh and fxgxh, and white cannot hope to mate with a supplemented white man. Instead white plans to mate with Sb6# after the square b4 has been covered. Retracting wLb4 to c5 immediately fails because black supplements a man on b4. Retracting wTd8 to the 4th row in two moves also fails right away by black supplementing on d8. Instead white creates a pawn position such that the black supplementing is illegal:
R: 1. Th8xDTLSd8 threat 2. h7-h8=T threat 3. Lc5-b4 and Sb6#.
Here it is illegal for black to supplement anything on b4, because white pawns have captured all missing black officers and the black b-pawn could not pass the white b-pawn. There is not enough time for the black officer supplemented on d8 to guard the mating square b6.
Black can defend by saving his one supplemented man, but then white succeeds with his alternate possibility:
R: 1. Th8-d8 threat 2. Te8xh8 threat 3. Te4xe8 and Sb6#.
Not 2. Tf8?xSh8! Sf7!-h8.
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Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (12) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 2004-6-10 more...
37 - P0008811
Niels Høeg
T10 Tidskrift för Schack 07/1924
P0008811
(5+1)
#1 vor 2
VRZ, Typ Hoeg
R: 1. e6-e7 Kd5xTe4 2. Le7xf6 and Da8#,
1. ... Kf3xTe4 2. Lh4xf6 and Dh1#,
1. ... Kf5xTe4 2. h5-h6 and Dd5#,
1. ... Ke3xLe4 2. Le5xf6 and De1#,
1. ... Kf4xLe4 2. Da3xa1 and Df3#,
1. ... Kd3xTe4 2. Da2xa1 and De2#.
The final two variations are dualistic.
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Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (18) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Frank Müller, 2015-7-11 more...
38 - P0008812
Niels Høeg
T9 Tidskrift för Schack 07/1924
P0008812
(8+10)
#1 vor 2
VRZ, Typ Hoeg
R: 1. g2-g4 Ka4xDb5 2. Dc6xLSb5+ and Dc2#,
Ka6xDb5 2. Dc4xLSb5+ and Dc8#.
It is illegal for black to supplement a queen (or a pawn) on b5 because of too many pawn captures (Th8 was captured on g8 or h8, Lf1 was captured on f1). In the try R: 1. g3?-g4 black prevents the mate by supplementing a checking queen, which is the a-pawn promoted on b1.
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Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (17) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Frank Müller, 2015-7-11 more...
39 - P0008813
Niels Høeg
36 Deutsches Märchenschach 11/1924
P0008813
(10+14)
#1 vor 2
VRZ, Typ Hoeg
Pawns captured all missing enemy men but one, for each side.
White captured exDd or exLd, black captured axb, bxa, cxb, f7xg6, g7xf6.
R: 1. Kf2xDLe3 DLxSe3+ 2. Sc4-e3 and Sb6#,
1. Kf2-e3 TxDd4 2. a6-a7 and Da7#,
1. ... LxSa4 2. e4xd5 and Sb6#,
1. ... Sb5xSa3 2. Sc4xa3 and Sb6#,
1. ... Sc4xSa3 2. Sb5xa3 and Sc7#,
1. ... Sh6xDTg8 2. LxDLb8 and axb8=D#,
1. ... c3xSb2 2. Sc4xb2 and Sb6#,
1. ... g7xSf6 2. Sd7-f6 and Sb6# or 2. Se8-f6 and Sc7#.
In the last variation white captured Lf8 on f8, so black may not
supplement a queen on f6.
Tries:
R: 1. Kd3?xLe3! Tc4!xd4+, and black controls both a7 and c7.
R: 1. Kf4?-e3 Tb4xd4+ or Tc4xd4+, and black controls the 4th row.
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Frank Müller: Erstquelle berichtigt (2010-9-2)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (24) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Frank Müller, 2010-9-2 more...
40 - P0008814
Niels Høeg
3155 Deutsche Schachblätter 12/1924
P0008814
(8+9)
#1 vor 3
VRZ, Typ Hoeg
R: 1. g2-g4 threat 2. h7-h8=S threat 3. Se6-d8 and Sc7#.
It is illegal for black to supplement anything on d8, because now all missing black men were captured by white pawns, say axb, bxaxb, dxcxb, and hxgxh. The try R: 1. h7?-h8=S threat 2. g2-g4 fails on 1. ... c3!xb2 making 2. g2-g4 illegal because of too many black pawn captures. White might try to mate with a queen supplemented on b2, but black defends successfully, say R: 1. h7?-h8=S c3!xDb2 2. Da3?xSb2! Sa4!xb2 or 2. Dc1?-b2 f4!-f3.
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Mario Richter: What do the rules say about Høeg-retractor and en passant capture?
After e.g. R: 1. g2-g4 c7-c6 2. h7-h8=S, is Black allowed to defend by 2. ... e4xf4 e.p.? (2009-7-22)
Henrik Juel: No, in Høeg retractors White and Black do not retract, they just 'move back'; then the opponent completes the retraction by deciding whether it was an uncapture, and if so, which man to supplement.
In your question, Black is allowed to move his Pf3 back to e4; then White of course is forced to accept this as an uncapture; but White can choose between these six supplements (as Høeg called them): add wDTLSPf3 or wPf4. He does not pick the last one, because this would force him to move his Pf4 back to f2, and then there is no mate. In my notation your example might be written: -1.g2 c7 -2.S=h7 e4:DTLSPf3 -3.Se6:0 (Black may not supplement anything), 1.Sxc7#. Not -2... e4!:Pf4? -3.f2 (forced), and no mate. (2009-7-22)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (25) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 2005-12-3 more...
41 - P0008815
Niels Høeg
105 Magyar Sakkvilag 09/1925
P0008815
(10+4)
#1 vor 3
VRZ, Typ Hoeg
R: 1. Kg2-h3 h2-h1=L+ 2. g3-g4 a3xSb2 3. Sc4-b2 and Sb6#, 2. ... c3xSb2 3. Sa4-b2 and Sb6#.
White pawns have captured all missing black men.
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Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (30) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 2004-6-10 more...
42 - P0008816
Niels Høeg
On Retraction Chess Problems 1927
P0008816
(0+1)
#1 vor 2
VRZ, Typ Hoeg
A Hoeg retraction game starts with an empty board, black adds his king,
then white adds his king, then black retracts, then white retracts, etc.
It ends when one side can mate the opponent with a forward move.
In this problem the first "retraction" is thus just the addition of wK.
R: 1. +Kf1 Kh2xDh1 2. De4xLSh1+ and Dh4#.
It is illegal for black to supplement D or T on h1.
This is not the case in the symmetric try, where the supplemented black officer is a promoted pawn: R: 1. +Kh3? Kg1xDh1 2. De4xDTh1!+
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Frank Müller: Sollte die Forderung nicht besser mit "+wK, dann #1 vor 2" angegeben werden? (2013-6-5)
Henrik Juel: In that case you must also stipulate that, unconventionally, Black starts the 'retroplay', Frank.
I put retroplay in quotes, because in a type Høeg defensive retractor White and Black do not retract in the usual sense; rather, each 'moves a man back' legally, and the opponent then 'supplements' any man (or possibly nothing) legally on the abandoned square; thus the two parts of a usual retraction are split between White and Black, and it is slightly misleading to say, as done above, 'then black retracts, then white retracts,' (2013-6-5)
comment
Keywords: Defensive Retractor, Type Høeg, only Kings
Genre: Retro
Reprints: Hoegs Skakproblemer 1982
400 Problemskak 01-03/2010
H6 ASymmetrie 2013
Input: Gerd Wilts, 1997-6-26
Last update: Frank Müller, 2013-6-5 more...
43 - P0008817
Niels Høeg
T11 Tidskrift för Schack 07/1924
P0008817
(11+2)
Schwarz konnte vor 2 Zügen mattsetzen
VRZ, Typ Hoeg
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).
solution:
R: 1. Lb2xTa1 Ta2-a1 2. La1-b2 Tb2xSa2 and Txc2#, 2. La2xSb2 S-b2 and Txc2#.
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.
play all play one stop play next play all
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: Frank Müller, 2015-7-11 more...
44 - P0008818
Niels Høeg
T12 Tidskrift för Schack 07/1924
P0008818
(9+10)
Schwarz konnte vor 6 Zügen mattsetzen
VRZ, Typ Hoeg
Black pawns captured all missing white men. White captured the black h-pawn on the h-file, and white pawns captured all other missing black men.
R: 1. Ka1-a2 Lc1-b2+ 2. Kb2-a1 Ld2-c1+ 3. Kc1-b2 Le1-d2+ 4. Kd2-c1 Lf2-e1+ 5. Ke1-d2 Lg1-f2+ 6. Kf2-e1 g2-g1=L+ and g1=D#.
play all play one stop play next play all
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (20) On Retraction Chess Problems 1927
Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Frank Müller, 2015-7-11 more...
45 - P0008819
Niels Høeg
(52) On Retraction Chess Problems 1927
P0008819
(4+8)
Schwarz konnte vor 1 Zug mattsetzen
VRZ, Typ Hoeg
R: 1. Ka1xTb1 Tb2xLb1+ and Tc2#,
1. Ka1xSb1 Sc3xLb1+ and Se4#,
1. ... c3xSd2+ and c2#,
1. ... Te5xBe7+ and Te1#,
1. ... Tg7xBe7+ and Tg1#,
1. ... Ke5-f5+ and Kf4#,
1. ... Kf6-f5+ and Kg5#,
1. ... Sc3xa2+ and Dxa2#.
The last variation is dualistic. Black might also supplement a bishop or
nothing on b1, but this would bring nothing new, except some duals.
play all play one stop play next play all
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 2004-6-10 more...
46 - P0008820
Niels Høeg
IV Skakbladet 01/1939
P0008820
(1+2)
h-retro= vor 6 Einzelzügen.
(Schwarz beginnt mit Rücknahme.)
R: 1. Tf2xSf7 Se5-f7 2. Kd1xTc2 Sd3-e5 3. Td2xTf2 Te2-f2
comment:
Hoeg defined retrostalemate as an illegal position (with no king in check) that would be legal if the other side had the move. In a help-retrostalemate problem black and white help each other to reach retrostalemate, with blackstarting the retractions. Since the goal is an illegal position, the last white retraction must be illegal. This was criticized and prompted Hoeg to invent the help-sub-retrostalemate form.
play all play one stop play next play all
Keywords: Help retractor
Genre: Retro
Reprints: Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Frank Müller, 2015-1-16 more...
47 - P0008821
Niels Høeg
Die Schwalbe 01/1939
P0008821
(1+4)
h-retro= vor 6 Einzelzügen
(Schwarz beginnt mit der Rücknahme.)
R: 1. Tc7xDd7 Df7xBd7 2. Lb7xDf3 Dg6xBf7 3. Lc8xDb7 Dc6xBb7
play all play one stop play next play all
Keywords: Help retractor
Genre: Retro
Reprints: Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 2005-12-3 more...
48 - P0008822
Niels Høeg
Skakbladet 08/1945
P0008822
(7+11)
Help-sub-retrostalemate in 3 retractions
R: 1. Tf8xTa8 Td8xSa8 2. Kg8-f7 Td1-d8 3. 0-0 0-0-0 and 4. Sc7xSa8.
Lf1 was captured on f1. Th2 is a promoted pawn and Lh6 is original.
R: 4. b4xc3? or d4xc3? would require too many black pawn captures. comment:
In a help-sub-retrostalemate problem black and white help each other to reach a position where the previous black move is uniquely determined. To avoid banalities the unique black retraction may not be an uncheck or the double pawn move preceding an en passant capture. This problem is a version of the original publication.
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Keywords: Help retractor
Genre: Retro
Reprints: Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 1997-6-26 more...
49 - P0008823
Niels Høeg
Arbejder-Skak 09/1945
P0008823
(1+2)
Help-sub-retrostalemate in 2 retractions.
R: 1. Te8xLe4 Lh7-e4 2. Th8xDe8 Dg8-e8 and 3. Kb1xSa1
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Keywords: Help retractor
Genre: Retro
Reprints: Hoegs Skakproblemer 1982
Input: Gerd Wilts, 1997-6-26
Last update: Gerd Wilts, 1997-6-26 more...
50 - P0008824
Niels Høeg
F4 Skakbladet 12/1922
Jörgen Möller gewidmet
P0008824
(8+14)
-1(w+s), dann h#1
R: 1. f2xLe3 f7-f5, dann 1. Se7 Sd7#
The retroplay continues with the black rook unchecking on a staircase to b2, R: 2. Kh7-h8 Tg6-g7+ 3. Kh8-h7 Tf6-g6+ 4. ... Tf5-f6+ 5. ... Te5-f5+ 6. ... Te4-e5+ 7. ... Td4-e4+ 8. ... Td3-d4+ 9. ... Tc3-d3+ 10. ... Tc2-c3+ 11. Kh8-h7 Tb2-c2+ 12. Kh7-h8 Tc2xBb2+. Earlier in the game black pawns captured all missing white men including the bishops, while white captured c6xSb7 on a light square.
play all play one stop play next play all
Keywords: Help retractor
Genre: Retro
Reprints: 2465 Deutsche Schachblätter 15/01/1923
Aarsskrift DSK 1939
Input: Gerd Wilts, 1997-7-1
Last update: Frank Müller, 2013-12-12 more...
51 - P0008825
Niels Høeg
Fyens Stiftstidende 1925
P0008825
(12+13)
a) Schwarz und Weiß nehmen 1 Zug zurück, dann #1
b) -1(w+s), dann #1
a) R: 1. 0-0 0-0, dann Txh8#
b) R: 1. g3xSf4 0-0, dann Sxe2#, nicht 1. 0-0 0-0?, dann Txh1#
If both sides have just castled, each side has made an even number of moves in the game, so black made the last move.
H\oeg published this retro with the ancient parity trick (who found this first?) in the chess column of a Danish newspaper, probably hoping to deceive inexperienced solvers.
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Henrik Juel: Høeg may have received inspiration from the following teaser by Knud Hannemann, published in Skakbladet 1923, at which time Høeg was a mature composer, while Hannemann was studying at the Technical University of Denmark: Construct a position where it can be shown that White did not make the last move, yet it cannot be deduced that Black made the last move! Solution: The initial array. (2004-4-26)
comment
Keywords: Help retractor, Castling in the retro play, Parity Argument
Genre: Retro
Reprints: Aarsskrift DSK 1939
Input: Gerd Wilts, 1997-7-1
Last update: Gerd Wilts, 2001-10-18 more...
52 - P0008826
Niels Høeg
Eskilstuna-Kuriren 1935
P0008826
(6+6)
a) -1(s+w), dann #1
b) -1(w+s), dann #1
a) R: 1. a7xDb6 Kg6-h6, and Dd8#, not say 1. Kg8xDf8? De7-f8+, and Dg7#.
b) R: 1. c3xDb4 Kf7-f8, and Dh4#, not say 1. Kh7xDh6? Df6-h6+, and Dg7#.
La1 is a promoted pawn. Pawns have captured all missing men, with the possible exception of one f- or h-pawn. For example, white captured cxb, d2xc3xb4xa5, e2xd3xc4xb5xa6, fxBg, and the black h-pawn before he promoted his own h-pawn on h8, while black captured axb, cxbxa, dxcxbxa, and exdxcxbxa. This rules out tries where a king has captured the enemy queen, and makes the white retraction in part a) unique.
play all play one stop play next play all
Keywords: Help retractor
Genre: Retro
Reprints: Aarsskrift DSK 1939
Thema Danicum 87 1997
Input: Gerd Wilts, 1997-7-1
Last update: Gerd Wilts, 2003-1-18 more...
53 - P0008827
Niels Høeg
Aarsskrift DSK 1939
P0008827
(12+12)
Ergänze einen schwarzen Stein! Schwarz nimmt 1 Zug zurück, dann h#1
+sTd2, R: 1. Td1xDd2, and 1. Kg7 Dh6#
The preceding play was R: 1. Tf1xDd2 f5xg6ep+ 2. g7-g5 f4-f5+, creating the barrier g7-f8-c5-c4-f1-g2. Earlier in the game pawns captured all missing men, white by hxgxh and black by f7xTe6xTd5xBc4. The white a-rook got out of its corner after white pawns had reached c4 and d3, and crossed the barrier while the black a-rook was still in its corner. The barrier was closed before the black a-rook could get out, so it must still be to the left of the barrier, explaining why the white queen was not captured on e3.
Nytaarshilsen is Danish (with pre-1948 spelling) for New Year's greeting. H\oeg probably sent this problem to his retro friends at the
end of 1938.
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Keywords: En passant in the retro play, Add pieces, Help retractor
Genre: Retro
Reprints: Nytarshilsen 1939
Input: Gerd Wilts, 1997-7-1
Last update: Gerd Wilts, 2005-12-3 more...
54 - P0505135
Niels Høeg
300v The Chess Amateur 02/1923
P0505135
(4+6) C+
h#3
1. Th1 Lh8 2. Dg1 Tg7 3. La3 Txg1#
play all play one stop play next play all
Keywords: Clearance, Hilfsmatt-Inder (LT)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: hpr, 1996-12-26
Last update: hpr, 1999-7-16 more...
55 - P0509777
Niels Høeg
6341 Skakbladet 10/1950
P0509777
(6+4) C+
h#2*
*) 1. ... Se3 2. Sd4 Sd1#
1) 1. Se5 Ld1 2. Ld4 Tb3#
play all play one stop play next play all
Keywords: Check Protection
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Markus Manhart, 1997-6-26
Last update: hpr, 1999-10-19 more...
56 - P0513184
Josef Cumpe
Niels Høeg

728 The Chess Amateur 09/1925
P0513184
(3+3) C+
h#3
b) sKb3 tauschen mit sTb2
a) 1. Kb4 Sc3 2. Ta5 Kd4 3. Tb3 Sc2#
b) 1. Td2 Sc7 2. Kc3 Ke3 3. Tb2 Sd5#
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a) stammt von JC, b) wurde als 764 Chess Amateur 12/1925 von NH publiziert
Henrik Juel: Clarification in b): 3.Tdb2 (2004-7-2)
comment

Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Reprints: 764 The Chess Amateur 12/1925
Input: Markus Manhart, 1997-9-30
Last update: hpr, 1999-10-22 more...
57 - P0516255
Niels Høeg
The Chess Amateur 05/1923
P0516255
(3+2) C+
h#4
1. Ke4 d5 2. Dc5 d6 3. Kd5 d7 4. Kc6 d8=D#
play all play one stop play next play all
Verstellung BL
comment
Keywords: Verstellung
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Andreas Mokosch, 1997-7-26
Last update: hpr, 1999-4-5 more...
58 - P1001836
Niels Høeg
301v The Chess Amateur 02/1923
P1001836
(4+6) C+
h#3
1. Dh7 f5 2. Sb4+ Txb4 3. Tb1 Ta4#
play all play one stop play next play all

Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.70 (2048 KB))
Input: hpr, 2001-12-25
Last update: hpr, 2001-12-25 more...
59 - P1012163
Niels Høeg
The Problemist FCS 1930
P1012163
(12+13)
Weiß und Schwarz nehmen 40 Züge zurück, dann #1
1.-20.Rg1-c8 Ra8-a8 21.Rf2xTg1 Rb8-a8 22.-38.Rd8-f2 Th1-g1 40.Td8-d7 Tg1-h1 & 1.TxT#.
play all play one stop play next play all
No. 1543 HN
Pascal Wassong: This is a duplicate of P0001754, and there is bPb7 missing. (2013-3-17)
comment
Keywords: Help retractor
Genre: Retro
Input: Henri Nouguier, 2004-1-11
Last update: Gerd Wilts, 2004-6-20 more...
60 - P1012813
Niels Høeg
2439 Deutsche Schachblätter 15/12/1922
P1012813
(12+7)
Schwarz nimmt 1 Zug so zurück, dann Weiß #1
(-1s, dann h#1)
R: 1. Lc8-e6, dann 1. Kxb4 d7#
play all play one stop play next play all
weitere Auflösung nach R: -1. .. Lc8-e6 : -2.e5xd6 e.p. d7-d5 (deshalb muß der sL nach c8) -3.Te6-a6+
No. 683 HN
comment
Keywords: Help retractor, En passant in the retro play
Genre: Retro
Input: Henri Nouguier, 2004-1-11
Last update: Mario Richter, 2011-12-11 more...
61 - P1012935
Niels Høeg
Die Schwalbe 1939
2. Preis
P1012935
(15+10)
Weiß nimmt 3, Schwarz 2 Züge zurück, dann #1
R: 1. g5xf6ep+ f7-f5 2. Sd3-c1+ Kh6-g6 3. h4xLg5+, dann 1. Dxg5#
play all play one stop play next play all
No. 848 HN
comment
Keywords: En passant, Help retractor
Genre: Retro
Input: Henri Nouguier, 2004-1-11
Last update: Gerd Wilts, 2005-11-12 more...
62 - P1012979
Niels Høeg
Die Schwalbe 1952
P1012979
(1+3) C+
Welches waren die 3 letzten Einzelzüge?
R: 1. f4xe3ep+ e2-e4 2. f5-f4+
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No. 912 HN
comment
Keywords: En passant, Last Moves? (3), Type C, Length Record (ex-aequo)
Genre: Retro
Computer test: RSP 1.2
Reprints: C04b Phénix 282, p. 11066, 02/2018
Input: Henri Nouguier, 2004-1-11
Last update: A.Buchanan, 2018-8-26 more...
63 - P1013027
Niels Høeg
Aarsskrift DSK 1938
P1013027
(1+2)
Schwarz und Weiß nehmen je 3 Züge zurück zu einem Retropatt!
R: 1. Kf6xDe5 De3-e5 2. Kg6xDf6 Dd4-f6 3. Kf5xTg6 Ke1-e2
play all play one stop play next play all
No. 986 HN
comment
Keywords: Help retractor
Genre: Retro
Input: Henri Nouguier, 2004-1-11
Last update: Gerd Wilts, 2006-9-2 more...
64 - P1015179
Niels Høeg
2 Fyens Stiftstidende 17/01/1925
P1015179
(5+2)
s#3
1. Sb6 droht 2. Dd7+ Kxb6+ 3. Db7+ Lxb7#
1. ... Kxb6+ 2. Dd5 droht unparierbar 3. Db7+ Lxb7#
play all play one stop play next play all
0472
Henrik Juel: The source should be 'Fyens Stiftstidende', I believe. (2004-7-2)
comment

Genre: s#
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-5-1
65 - P1017536
Niels Høeg
438v The Chess Amateur 01/1924
P1017536
(10+2)
#1 vor 2
VRZ, Typ Hoeg
Henrik Juel: -1.h2:DTLSP Db8:P! -2.Lb1:0, 1.Sb3#. Black may not supplement anything on b1, because now wP's captured all missing black men. Not -1.Lb1?:DL! Seems cooked by -1.f2:DTLSPg3 etc. (2004-6-25)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (5) On Retraction Chess Problems 1927
Input: Gerd Wilts, 2004-6-10
Last update: Gerd Wilts, 2004-6-10 more...
66 - P1017537
Niels Høeg
439 The Chess Amateur 01/1924
P1017537
(4+9)
#1 vor 3
VRZ, Typ Hoeg
Henrik Juel: -1.b4-b5 d6:P -2.e4 d7 -3.Sa6:TS, 1.Sxc7#. Supplementing D, L, or nothing on b8 is illegal. Not -1.Sa6?:D0! Quite neat, despite the lack of variations. (2004-6-25)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (6) On Retraction Chess Problems 1927
Input: Gerd Wilts, 2004-6-10
Last update: Gerd Wilts, 2004-6-10 more...
67 - P1017539
Niels Høeg
61 Magyar Sakkvilag 02-03/1924
P1017539
(3+1)
#1 vor 2
VRZ, Typ Hoeg
Henrik Juel: -1.Lb8:DTS Da6:0 -2.L=a7:DTS, 1.axb8D# (= denotes unpromotion); -1... Sc6:LSP0 -2.La6, 1.Lb7#. Not -1.Lc5?:D! Da6!:D -2.Db6:L! and no forward mate. (2004-6-25)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (11) On Retraction Chess Problems 1927
Input: Gerd Wilts, 2004-6-10
Last update: Gerd Wilts, 2004-6-10 more...
68 - P1017541
Niels Høeg
1457 Eskilstuna-Kuriren 29/03/1924
P1017541
(0+1)
#1 vor 3
VRZ, Typ Hoeg
1. [+wKe6] Kf8xDe8 2. Dh5xTe8 Dd8xTe8 3. Te8, dann 1. Dh8#
1. .... Kd8xde8 2. Db5xDe8 Df8xTe8 3. Te8, dann 1. Db8#
play all play one stop play next play all

Duplicate Diagram: P1093454, P1104274, P1104275

ohne wK!
Henrik Juel: The Høeg retro game just started with Black (foolishly) placing his king on e8; now it is White's turn to place his king; this addition counts as one of the 2.5 retractions stipulated to reach a forward mate. -1.+wKe6 Kd8:D (White chooses to supplement a queen on the abandoned square e8) -2.Db5:DT! (if Black supplemented L, S, or nothing on the abandoned square e8, White could mate immediately) Df8:T -3.Te7 (now Black's choice of which man to supplement on the abandoned square e8, if any, is immaterial), 1.Db8#; -1... Kf8:D -2.Dh5:DT! Dd8:T -3.Te7, 1.Dh8#. White needs to restrict sK, so -1.+wKd6? does not work. (2004-6-18)
comment
Keywords: Defensive Retractor, Type Høeg, only Kings
Genre: Retro
Reprints: (15) On Retraction Chess Problems 1927
Input: Gerd Wilts, 2004-6-10
Last update: Frank Müller, 2015-7-11 more...
69 - P1017547
Niels Høeg
629v The Chess Amateur 12/1924
P1017547
(11+15)
#1 vor 10
VRZ, Typ Hoeg
Henrik Juel: White captured [Pa7] on its file. Black captured d7xDe6, [Lc1] and [Lf1] at home, and [Ta1] and [Th1] below the wP's. When Black moves Td6, Sf6, or Sg7 back, White supplements nothing, moves Sd8 back to the abandoned square, and mates by 1.Sf7#. -1.Kc3:0 (threatening -2.Kd4:0, forcing Black to move Sf6 back to uncheck) Lf2:0 -2.Kb3!:0 h5 -3.Ka2 h6 -4.Kb1 h7 (now Black has exhausted his P retractions and must move Lf2 back) -5.Kc1 Lg3:T (-5... Le1?:T -6.Kd1/Kb1!) -6.Tf1 Lf2 -7.Te1 Lg3:0! (-7... Lg1?:T!) -8.f2 Lh4 -9.0-0-0, and now Black is forced to open the North cage to prevent retro stalemate, e.g. -9... Td5 -10.Sd6:0, 1.hSf7#. Not -2.Kd3? Ld4:T -3.Ke3 Lc3! with the devastating result 1... Lxd2#; or -3.Tf1 Sg4!, 1... Se5#. Nice strategy. (2004-7-1)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (27) On Retraction Chess Problems 1927
Input: Gerd Wilts, 2004-6-10
Last update: Gerd Wilts, 2004-6-10 more...
70 - P1017548
Niels Høeg
682 Svenska Dagbladet 20/12/1924
P1017548
(8+12)
#1 vor 2
VRZ, Typ Hoeg
Henrik Juel: White did not promote to a light-squared L, but otherwise the position does not limit the supplementing very much.
-1.g3:DTLSP Dg5:D -2.De4, 1.Lxb7# (this mate is repeated in all variations); -1.g3:LSP e7/Tc8:S -2.f2:Y; -1... Td1/Sh6:D -2.De4; -1... T=c2:D -2.Dh1; -1... Lc7:D -2.Dc8:Y. Not -1.f3? T=c2! nor -1.Lc6?:DL! DLf3! (2004-7-2)
Henrik Juel: Correction: White could have promoted to a light-squared L, but this L could not have left the promotion square. (2004-7-8)
comment
Keywords: Defensive Retractor, Type Høeg
Genre: Retro
Reprints: (28) On Retraction Chess Problems 1927
Input: Gerd Wilts, 2004-6-10
Last update: Gerd Wilts, 2004-6-10 more...
71 - P1031211
Niels Høeg
Tidskrift för Schack 06/1905
6. ehrende Erwähnung Turnier der Nordisk Chess Federation
P1031211
(8+4)
#3
1. f7 droht 2. f8=D
1. ... Kd6 2. f8=D+ Ke6 3. Dc5#
1. ... exf4 2. f8=T Kd6 3. Tf6#
1. ... exd4 2. f8=L Kf6 3. Ta6#
1. ... Kf6 2. f8=S exd4 3. Tf7#
play all play one stop play next play all
BS Problemid: 16113
Authors: Hoeg, Nils
Sources: De Problemist 1930
Themes 64 1956
Years: 1905
'ACB': "Greatest of Promotion Three-Movers"
Erich Bartel: Nachdrucke:
1) 630 Beispiele zur Ideengeschichte des Schachproblems, 1982
2) Perlen der Schachkomposition 1985
3) 52 The theory of pawn promotion 1912
4) 4 varianter med 1 bonde,1972
5) VII Im Banne des Schachproblems 1951,S.15
6) Themes-64 (2) IV 1956
7) idee \& form (58) IV 1998
8) Die Schwalbe (174) XII 1998
9) 7 Die Allumwandlung im Problemschach VIII 1966
ND10) 6 De man die de Babson task wilde maken 1987
11) Schach I 2000,S.89
ND12) 58 Eigenartige Schachprobleme, 2010

siehe zum Vergleich Nr.503.6 des gleichen Autors
"'Die bescheidene Einreihung im Turnier ist ein interessanter
Beitrag zu dem Thema:"`Kompetenz der Preisrichter"" [Zitat aus ND 5] (2012-10-25)
Henrik Juel: The author name is spelled Niels Høeg (2012-10-25)
Henrik Juel: The problem participated in a tourney arranged by Nordisk Skakforbund (the Nordic chess federation); the tourney results appeared in Tidskrift för Schack, June 1905 (2012-10-25)
Erich Bartel: Danke für die Hinweise, Habe entsprechend ergänzt. (2012-10-25)
comment
Keywords: Brian Stephenson Collection (16113), Allumwandlung
Genre: 3#
Reprints: 723 Schweizerische Schachzeitung , p. 183, 12/1906
1623 American Chess Bulletin 09-10/1922
17 Vooruit 04/01/1925
5 Atputa 105 05/11/1926
3a-1163 2345 Chess Problems 1997
32 Encyclopedia of Chess Problems , p. 21, 2012
Input: Brian Stephenson, 2004-8-12
Last update: Mario Richter, 2017-9-6 more...
72 - P1037216
Niels Høeg
Deutsches Wochenschach 1910
P1037216
(10+8)
#3

BS Problemid: 22164
Authors: Hoeg, Nils
Sources:
Years: 1910
Keywords: Brian Stephenson Collection (22164)
Genre: 3#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
73 - P1037578
Niels Høeg
Deutsches Wochenschach 1906
P1037578
(9+7)
#4

BS Problemid: 22526
Authors: Hoeg, Nils
Sources:
Years: 1906
Keywords: Brian Stephenson Collection (22526)
Genre: n#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
74 - P1037762
Niels Høeg
Eskilstuna-Kuriren 1922
P1037762
(4+5)
#4

BS Problemid: 22711
Authors: Hoeg, Nils
Sources:
Years: 1922
Keywords: Brian Stephenson Collection (22711)
Genre: n#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
75 - P1039572
Niels Høeg
Skakbladet 1921
1. Preis
P1039572
(8+11)
#2

BS Problemid: 24528
Authors: Hoeg, Nils
Sources: FIDE Album (1914-1944) (I) 1971
Years: 1921
Keywords: Brian Stephenson Collection (24528)
Genre: 2#
Reprints: FIDE Album 1914-1944/I 1971
Input: Brian Stephenson, 2004-8-12
Last update: Frank Müller, 2015-1-17 more...
76 - P1043930
Niels Høeg
Deutsches Wochenschach 1907
P1043930
(9+4)
#4

BS Problemid: 28926
Authors: Hoeg, Nils
Sources:
Years: 1907
Keywords: Brian Stephenson Collection (28926)
Genre: n#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
77 - P1050741
Niels Høeg
11 Skakbladet 20/11/1904
P1050741
(5+5)
#3

BS Problemid: 35778
Authors: Hoeg, Nils
Sources:
Years: 1904
Keywords: Brian Stephenson Collection (35778)
Genre: 3#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
78 - P1050747
Niels Høeg
Skakbladet 1906
P1050747
(12+11)
#3

BS Problemid: 35784
Authors: Hoeg, Nils
Sources:
Years: 1906
Keywords: Brian Stephenson Collection (35784)
Genre: 3#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
79 - P1050749
Niels Høeg
Skakbladet 1914
P1050749
(5+5)
#3

BS Problemid: 35786
Authors: Hoeg, Nils
Sources:
Years: 1914
Keywords: Brian Stephenson Collection (35786)
Genre: 3#
Input: Brian Stephenson, 2004-8-12
Last update: Frank Müller, 2011-8-6 more...
80 - P1050750
Niels Høeg
Skakbladet 1915
P1050750
(10+4)
#3

BS Problemid: 35787
Authors: Hoeg, Nils
Sources:
Years: 1915
Keywords: Brian Stephenson Collection (35787)
Genre: 3#
Input: Brian Stephenson, 2004-8-12
Last update: Frank Müller, 2011-8-6 more...
81 - P1051425
Niels Høeg
Narodni Politika 1911
P1051425
(6+6)
#5

BS Problemid: 36465
Authors: Hoeg, Nils
Sources:
Years: 1911
Rosalie Fay: 1 Sb5 (thr 2 Sa3) Le2/Lf1 2 a4 ~ 3 Sa3 (thr 4 Sxc2#) Ld1/Ld3 4 a5 L~ 5 Sxc2#
Switchback (S)
C+ Popeye Windows-64Bit v4.69 (2015-10-4)
comment
Keywords: Brian Stephenson Collection (36465)
Genre: n#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
82 - P1051711
Niels Høeg
Bohemia 1912
P1051711
(8+7)
#5

BS Problemid: 36751
Authors: Hoeg, Nils
Sources:
Years: 1912
Rosalie Fay: 1 Kf2 (thr 2 Kg3) Lf1 2 Th2 Lh3 3 Kg3 (thr 4 Lb2#) Lg2 4 Kh4 L~ 5 Lb2#
1 ... Lg2 2 Th2 Lf1/Lh3 3 Kg3 as above
1 ... Lg4 2 Th2 Lh3 3 Kg3 as above
C+ Popeye Windows-64Bit v4.69 (2015-10-7)
comment
Keywords: Brian Stephenson Collection (36751)
Genre: n#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
83 - P1052075
Niels Høeg
Deutsches Wochenschach 1911
P1052075
(8+4)
#4

BS Problemid: 37117
Authors: Hoeg, Nils
Sources: The White King 1914
Years: 1911
Keywords: Brian Stephenson Collection (37117)
Genre: n#
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
84 - P1052684
Niels Høeg
109 Deutsche Schachblätter 13 01/07/1938
P1052684
(2+3) cooked
#4
1. Db5 Kf1 2. Kf3 Kg1 3. Dxe2 ... 4. Dg2#
play all play one stop play next play all
Cook: Zugumstellung: 2. Dxe2+ Kg1 3. Kf3
Keywords: Minimal, Asymmetrical solution, Symmetrical position, Oneliner, Brian Stephenson Collection (37726)
Genre: n#
Reprints: 1439 Hamburger Nachrichten 11/07/1938
16167 Tidskrift för Schack 03/2002
Input: Brian Stephenson, 2004-8-12
Last update: Mario Richter, 2017-12-16 more...
85 - P1054598
Niels Høeg
Nationaltidende 1905
P1054598
(11+8)
#3
1. Tb2! ... 2. La6 ... 3. Lb7#
1. ... Le5 2. f4 ... 3. Lf3#
play all play one stop play next play all
Der wT muß nach b2, um 1. ... La1! zu verhindern
Keywords: Brian Stephenson Collection (39646)
Genre: 3#
Reprints: 205 Atputa 315 17/11/1930
Input: Brian Stephenson, 2004-8-12
Last update: Mario Richter, 2015-12-28 more...
86 - P1064905
Niels Høeg
52A The Theory of Pawn Promotion 1912
P1064905
(8+5)
#3
1.e7 Kc6/b\x a5/b\x c5/b5 2.e8=D/T/L/S
play all play one stop play next play all
BS Problemid: 49997
Authors: Hoeg, Nils
Sources: Themes 64 1956
Years: 1905
Keywords: Brian Stephenson Collection (49997), Allumwandlung
Genre: 3#
Reprints: Themes-64 (2) 1956
Input: Brian Stephenson, 2004-8-12
Last update: A.Buchanan, 2014-12-30 more...
87 - P1068439
Niels Høeg
Hannu Lehto

10095 Thema Danicum 123 07/2006
Niels Hoeg, Version Hannu Lehto
P1068439
(9+15)
Weiß nimmt 1 Zug zurück, dann #1
Mario Richter: I think, the intended solution is R: -1.Qa1-g1, then 1.Qd1#
Further retraction: -1. ... g3-g2 -2.c2-c3 g4-g3 -3.Qh8-a1 g5-g4 -4.h7-h8=Q h3-h2 -5.h6-h7 f3-f2 -6.h5-h6 h6xBg5 -7. Bf6-g5 h7-h6 -8.Rg1-g8 f4-f3 -9.Ra1-g1 f5-f4 -10.Bb2-f6 f6-f5 -11.Bc1-b2 f7-f6 -12.b2-b4 Kb4-a4 -13.h4-h5 Qa4-a5 (2010-1-7)
comment
Keywords: Help retractor
Genre: Retro
Input: Gerd Wilts, 2006-6-10
Last update: Gerd Wilts, 2006-6-10 more...
88 - P1082657
Niels Høeg
F1 Skakbladet 12/1922
P1082657
(1+2) C+
Weiß und Schwarz nehmen 1 Zug zurück, dann h#1
R: 1. Kh7xTh8 Tc8xDh8, dann 1. Tc2 Da1#
play all play one stop play next play all
Keywords: Help retractor, anticipated (P1204214)
Genre: Retro
Reprints: Deutsche Schachzeitung 01/1923
2462 Deutsche Schachblätter 15/01/1923
Input: HBae, 2009-2-6
Last update: Frank Müller, 2013-12-12 more...
89 - P1082658
Niels Høeg
F2 Skakbladet 12/1922
P1082658
(2+3)
Weiß und Schwarz nehmen 1 Zug zurück, dann h#1
Weiß zurück: La5xSb4
Schwarz zurück: Sd3xTb4
Vor: 1. Sf2 Tb1#
play all play one stop play next play all
Nachdruck: Deutsche Schachzeitung 01/1923
Keywords: Help retractor
Genre: Retro
Reprints: Deutsche Schachzeitung 01/1923
2463 Deutsche Schachblätter 15/01/1923
Input: HBae, 2009-2-6
Last update: Frank Müller, 2013-12-12 more...
90 - P1082659
Niels Høeg
F3v Skakbladet 12/1922
P1082659
(14+9) cooked
Weiß und Schwarz nehmen 1 Zug zurück, dann h#1
R: 1. Kf8-e8 Tc7-f7+, dann 1. Kxa4 Sb6#

Die nach den beiden Rückzügen sich ergebende Stellung, in der Kb3 im Schach durch Lg8 steht, ist dadurch entstanden, daß auf d7 ein schw. B, der weiße Bd6 auf e5, sowie der weiße Kf8 auf f7 stand; es geschah in dieser Stellung: 1. Kf8+ d5 2. exd6ep+ Tf7+ 3. Ke8, womit die Diagrammstellung erreicht ist. Die rückwärtige Analyse, auf die wir hier nicht genauer eingehen können, hat zu erweisen, daß zur Erreichung der Diagrammstellung sämtliche weiße oder sämtliche schwarze Schlagmöglichkeiten bereits erschöpft worden sind (die weißen Bauern d6 und e3 (oder e4), die von h2 und f2 (od. f3) gekommen sind, haben von den 7 fehlenden schwarzen Steinen 5 geschlagen, die übrigen schwarzen Steine sind zur Herbeiführung der schwarzen Bauernstellung auf der a- und b-Linie geschlagen worden, bzw. diese Bauernstellung ist durch Wegschlagen der beiden einzigen fehlenden weißen Steine entstanden). Damit sind alle andersartigen Lösungsversuche, die einen weißen und schwarzen Schlagfall erfordern, als falsch erwiesen (Lösungsbesprechung aus DSz 4/1923, Dr. Palitzsch).
play all play one stop play next play all
Druckfehlerberichtigung in 01/1923, Seite 76.
Korrektur in 03/1923, Seite 100.
Mario Richter: Falsch sind nur Loesungsversuche, in denen Weiss UND Schwarz entschlagen.
Dagegen gibt es eine Reihe von NLs, in denen nur Schwarz entschlaegt,z.B.
R: -1.Sb6-c8 Se2xDd4, dann V: 1.Se2xc3 Dd4xc3# (2009-3-1)
hpr: Mario, könnte mir vorstellen, dass im Retrospiel Kampfhandlung gefordert ist und kein Hilfsspiel. Zumindest sieht die angegebene Lösung danach aus. Weiß das jemand genauer? (2009-3-2)
HBae: Ergänzug: Ursprünglich NL. Es handelt sich hier um eine berichtigte Stellung. Es musste versetzt werden Ba4 nach a6, Bd2 nach d3, Ba3 nach c5, sowie hinzugefuegt werden +wTa4, +wLb2.
Zur NL von mri: Ist das überhaupt eine NL?. Nach Ruecknahme Se2xDd4 entsteht doch eine illegale Stellung , weil der sBa2 zweimal geschlagen haben muss. (2009-3-2)
HBae: nein das war zu voreilig. Der sBa2 muss nicht zweimal geschlagen haben, weil Weiss insgesamt 7 schwarze Schlagobjekte zur Verfuegung stehen, d.h. der wBa6 hat zweimal geschlagen, der wBd6 4-mal und ein weisser e-Bauer hat 1-mal geschlagen, macht insgesamt 7 Schlagfaelle. (2009-3-2)
HBae: Die NL in der Ursprungsfassung war:
Weiß zurück: Sa7-c6
Schwarz zurück: Kb3-c4+
Vor: 1. Sf4-d3 Sc6-a5#
Die Korrektur wurde in der Loesungsbesprechung genannt.
Es scheint, dass die Verbesserung fehlerhaft ist. (2009-3-2)
Mario Richter: @hpr: Wenn im Retrospiel Kampfhandlung gefordert gewesen waere, dann wuerde Schwarz -1.wKf8-e8 mit (z.B.) -1. ... sTf6xTf7! beantworten. (2009-3-2)
hpr: @Mario: Wohl wahr, Danke. Ich ziehe meinen Kommentar inhaltlich voll zurück. :-) (2009-3-2)
comment
Keywords: Help retractor
Genre: Retro
Reprints: Deutsche Schachzeitung 01/1923
2464v Deutsche Schachblätter 15/01/1923
Input: HBae, 2009-2-6
Last update: Frank Müller, 2013-12-12 more...
91 - P1105506
Niels Høeg
Deutsche Schachblätter 1927
P1105506
(3+3) C+
#2
1. Sc7 droht 2. Dg7#,Dd8#
1. ... Ld4 2. Dd8#
1. ... Lc5,Lxc7 2. Dg7#
1. ... Ta8 2. Dg7#
1. ... Txc7 2. Dd8#
play all play one stop play next play all
Felber, Volker: MZ (21): Die Dame und ihr Kavalier (2016-4-19)
comment
Keywords: Aristocrat, Novotny
Genre: 2#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192 KB)
Input: Frank Müller, 2010-5-17
Last update: Felber, Volker, 2016-4-19 more...
92 - P1117630
Niels Høeg
Eskilstuna-Kuriren 01/05/1920
P1117630
(3+3)
#3
1. h8=L Lg2 2. Ld4 Ld5 3. Dg1#
1. ... Lf1 2. Le5 ... 3. Dh2#
play all play one stop play next play all
BUL30 e005 mm
comment
Keywords: Miniature Collection (0039315), under-promotion (L)
Genre: 3#
Input: Felber, Volker, 2010-9-11
Last update: Rainer Staudte, 2015-1-2 more...
93 - P1118572
Niels Høeg
8865 Deutsches Wochenschach 11/07/1909
P1118572
(6+1)
#3
1. Db7 Kxa1 2. Kb3 Kb1 3. Dh1#
play all play one stop play next play all
Q0_ Q01
vf: wBd4 statt wBc3, Gerhard Latzel, 02.1931, Deutsche Schachzeitung, S.63, #17006
comment
Keywords: Miniature Collection (0039833)
Genre: 3#
Input: Felber, Volker, 2010-9-11
Last update: A.Buchanan, 2014-12-30 more...
94 - P1120702
Niels Høeg
118 Deutsche Schachblätter 15, p. 244, 08/1936
P1120702
(3+2)
#3
1. Lb7+ Kc5 2. Dc3+ Kb5 3. Lc6#
1. ... Kd7 2. Kb8 d5 3. Lc6#
1. ... Kb5 2. Dc3 d5 3. Lc6#
play all play one stop play next play all
LX3 e251 mm
comment
Keywords: Miniature Collection (0041285)
Genre: 3#
Input: Felber, Volker, 2010-9-11
Last update: Rainer Staudte, 2015-1-2 more...
95 - P1121172
Niels Høeg
1549 Skakbladet 04/1918
P1121172
(5+2)
#3
1. Lg8-h7! Kc6-d7 2. Da3-d6+ 2. ... Kd7-c8 3. Lh7-f5# 2. ... Kd7-e8 3. Lh7-g6#
1. ... Kc6-c7 2. Da3-d6+ Kc7-c8 3. Lh7-f5#
1. ... Kc6-b6 2. Da3-c5+ Kb6-a6 3. Lh7-d3#
1. ... Kc6-b5 2. Lh7-d3+ Kb5-b6 3. Da3-c5+# 2. ... Kb5-c6 3. Da3-d6# oder
2. Da3-c5+ Kb5-a6 3. Lh7-d3# 2. ... Kb5-a4 3. Lh7-c2#
play all play one stop play next play all
e192 mm
comment
Keywords: Miniature Collection (0329569)
Genre: 3#
Input: Zuncke/Bruder, 2010-9-11
Last update: Rainer Staudte, 2015-1-2 more...
96 - P1126352
Niels Høeg
10084 Deutsches Wochenschach 23/04/1911
P1126352
(3+2)
#4
1. Sd7
play all play one stop play next play all
F4SL
comment
Keywords: Miniature Collection (0322728)
Genre: n#
Input: Zuncke/Bruder, 2010-9-11
Last update: A.Buchanan, 2014-12-30 more...
97 - P1128378
Niels Høeg
31 Skakbladet 03/1905
P1128378
(6+1)
#3
1. Dg8 Kd7 2. Df8
play all play one stop play next play all
A9-12- mm
Henrik Juel: The author name should be Niels Høeg. (2010-12-22)
comment
Keywords: Miniature Collection (0323673)
Genre: 3#
Input: Zuncke/Bruder, 2010-9-11
Last update: A.Buchanan, 2014-12-30 more...
98 - P1128842
Niels Høeg
Eskilstuna-Kuriren 30/08/1917
P1128842
(3+4)
#6
1. Lh7
play all play one stop play next play all
D8b
comment
Keywords: Miniature Collection (0324598)
Genre: n#
Input: Zuncke/Bruder, 2010-9-11
Last update: A.Buchanan, 2014-12-30 more...
99 - P1131157
Niels Høeg
(13) Skakbladet 06/1911
P1131157
(4+2)
#2
1. Th8
play all play one stop play next play all
A12TT2 mm
comment
Keywords: Miniature Collection (0308082)
Genre: 2#
Input: Zuncke/Bruder, 2010-9-11
Last update: A.Buchanan, 2014-12-30 more...
100 - P1132445
Niels Høeg
Aftonbladet 15/08/1926
P1132445
(3+1)
#2
1. c8=S Ka6 2. a8=D#
play all play one stop play next play all
BUS2D
comment
Keywords: Miniature Collection (0012179), Promotion (konsekutiv SD)
Genre: 2#
Reprints: 1 Schachmatni superminiatjuri 1988
Input: Felber, Volker, 2010-9-11
Last update: Mario Richter, 2015-10-10 more...
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