Die Schwalbe

1441 problem(s) found in 1704 milliseconds (displaying 100 problem(s)). [A='Caillaud' and FIRSTNAME='Michel']

1 - P0000012
Nikita M. Plaksin
Alexander Kislyak
Nenad Petrovic
Andrey Frolkin
Michel Caillaud
Josip Varga
Bernd Schwarzkopf

(B) Die Schwalbe 98 04/1986
P0000012
(11+3)
2 Rochaden
R: 1. 0-0+; Weiß hat 0-0
play all play one stop play next play all
173. Thema-Turnier
comment
Keywords: Castling (wksk), Last Move?
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-6-10 more...
2 - P0000013
Nikita M. Plaksin
Alexander Kislyak
Nenad Petrovic
Michel Caillaud
Andrey Frolkin

C Die Schwalbe 98, p. 26, 04/1986
P0000013
(8+9)
Welches war der letzte und erste Zug des sK?
R: 1. dxe6ep+ e7-e5 2. d4-d5+ Kg6xBf6 3. gxf6ep+ f7-f5
play all play one stop play next play all
Letzter Zug des sK: Kg6xBf6 (s.o.). Der erste Zug des sK war 0-0-0.
173. Thema-Turnier
comment
Keywords: Castling (sg), En passant (2), Last Moves? (6), First Move?, Last Move?
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-4-25 more...
3 - P0000021
Michel Caillaud
(L) Die Schwalbe 98 04/1986
P0000021
(13+13)
Vor 35 Einzelzügen mußte rochiert werden!
R: 1. a6-a7 e4-e3 2. a5-a6 e5-e4 3. a4-a5 e6-e5 4. a2-a4 e7-e6 5. Ta3-c3 c3-c2 6. Sb2-c4 c4-c3 7. Ta8xBa3 c5-c4 8. Tc8-a8 c6-c5 9. c7-c8=T b7xLc6 10. Lg2-c6 a4-a3 11. c6-c7 a5-a4 12. c5-c6 a6-a5 13. c4-c5 a7-a6 14. c2-c4 c3xTd2 15. Td1-d2 c4-c3 16. Sd2-f1 c5-c4 17. Tf1-d1 c6-c5 18. 0-0 c7-c6 19. Lf1-g2 Kg4-h4 20. g2xSh3+
play all play one stop play next play all
173. Thema-Turnier
comment
Keywords: Castling (wk), Last Moves? (39)
Genre: Retro
Reprints: H27 FIDE Album 1986-1988 1995
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-8-6 more...
4 - P0000027
Michel Caillaud
(R) Die Schwalbe 98 04/1986
P0000027
(12+15)
Vor 29 Einzelzügen mußte ep geschlagen werden.
R: 1. Dg5-h5+ Sc7-e8 2. b3-b2 Sb5-c7 3. b4-b3 Sd4-b5 4. b5-b4 Sc6-d4 5. b6-b5 Sd8-c6 6. Te7-f7 Sf7-d8+ 7. Te8-e7 a5-a6 8. Tc8-e8 a4-a5 9. Tc5-c8 a3-a4 10. Tb5-c5 a2-a3 11. Tb1xBb5 b4-b5 12. Tg1-b1 b3-b4 13. g2-g1=T b2-b3 14. g3-g2 Se3-g4 15. h4xg3ep+ g2-g4 16. Sg4-h6+
play all play one stop play next play all
173. Thema-Turnier
comment
Keywords: En passant, Last Moves? (31)
Genre: Retro
Reprints: (6) diagrammes 15 07-09/1994
H26 FIDE Album 1986-1988 1995
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2014-4-23 more...
5 - P0000404
Michel Caillaud
Die Schwalbe 80 04/1983
P0000404
(11+15)
BP in 45,0
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. a3 Ta4 5. Ta2 bxa2 6. Tg1 axb1=S 7. Th1 Sc3 8. Tg1 Sd5 9. Th1 Sb6 10. Tg1 Sa8 11. Th1 b6 12. Tg1 La6 13. Th1 Dc8 14. Tg1 Db7 15. Th1 Df3 16. gxf3 h5 17. Lh3 h4 18. Le6 h3 19. La2 Lc4 20. Lb1 La2 21. b3 Thh4 22. Lb2 Thb4 23. Lf6 gxf6 24. Kf1 Lh6 25. Kg1 Kf8 26. Df1 Kg7 27. Dg2+ hxg2 28. h4 Kg6 29. Kh2 g1=S 30. Kg2 Lf4 31. h5+ Kg5 32. Th4 Lh2 33. Td4 Sh3 34. f4+ Kh4 35. Kf3 Sg5+ 36. Ke3 Kh3 37. h6 Kg2 38. h7 Kf1 39. h8=T Sh7 40. Kf3 Ke1 41. Kg2 Kd1 42. Kf1 Kc1 43. Ke1 Kb2 44. Kd1 Ka1 45. Kc1 Lg1
play all play one stop play next play all
Keywords: Unique Proof Game, Length Record, Non-standard material, Promotion
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-1-9 more...
6 - P0001105
Michel Caillaud
3206 Die Schwalbe 64 08/1980
P0001105
(13+11)
#1
R: 1. Sc2-a1 Da7-a6 2. Se1-c2 Db8-a7 3. Sf3-e1 Da7-b8 4. Sh4-f3 Db8-a7 5. Sf5-h4 Da7-b8 6. Se7-f5 Db8-a7 7. Sc6-e7 Dc7-b8 8. Se7-c6 Dd8-c7+ 9. Sf5-e7 g4-g3 10. Sd6-f5 De7-d8 11. g5-g6 Df8-e7 12. Sf5-d6
play all play one stop play next play all
Keywords: Whose move?, Promotion
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-8-4 more...
7 - P0001106
Michel Caillaud
3327 Die Schwalbe 66 12/1980
Dr. L. Ceriani zum Gedenken
2. ehrende Erwähnung
P0001106
(11+10)
Löse die Stellung auf!
R: 1. h2xBg3 f4xLg3 2. Lh4-g3 f5-f4 3. Lg3-h4 a7-a6 4. Lb8-g3 h7-h6 5. Lg3xTb8 Ta8xSb8 6. Sc6-b8 Tb8-a8 7. Se5-c6 Ta8-b8 8. Sd3-e5 Tb8-a8 9. Sc1-d3 Ta8-b8 10. Sd3xDc1 Db1xSc1 11. Se5-d3 Tb8-a8 12. Sd3-c1 Kc1-c2+ 13. Sf4-d3+ Ta8-b8 14. c2xSb3
play all play one stop play next play all
Renny Bosch: To see why "Dr. L. Ceriani zum Gedenken", see P0000833. (2007-3-23)
comment
Keywords: Uncapture of pieces by pieces, Last Moves? (3)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-8-4 more...
8 - P0001107
Michel Caillaud
3332 Die Schwalbe 66 12/1980
2. Preis
P0001107
(7+9)
h#5 (AP)
0.1...
Circe
1. ... hxg6ep[+sBg7] 2. a1=T+ Txa1[+sTh8] 3. 0-0 Ta3 4. bxa3[+wTa1] 0-0-0 5. Td8 Txd8[+sTh8]#
play all play one stop play next play all
Wenn die beiden Könige noch nicht gezogen haben (was a.p. durch Ausführung beider Rochaden bewiesen wird!), kann der letzte Zug nur g7-g5 gewesen sein, Sonst ginge z.B. auch R: 1. Kd8-e8 c2xDb3
Cook: Kurzlösung:
1. ... h5xg6ep[+sBg7] 2. a2-a1=D+ Ta3xa1[+sDd8] 3. Ke8-f8 Ta1-d1 4. Kf8-g8 Td1xd8# und andere!
Henrik Juel: A possible retroplay is -1... g7 -2.f3xP(-Pg7) b5 -3.f2 c6xP(-Pb2) -4.b2 a6 -5.Rc3 a7 -6.Rc1 b6xB -7.Bf8 b7 -8.Bg7xB etc. (2003-4-22)
comment
Keywords: a posteriori (AP), Circe, En passant as key, Castling in the forward play, Promotion in forward play, Valladao Task, Castling
Genre: Retro, Fairies
Reprints: feenschach 61, p. 534, 08/1982
RA152 diagrammes 72 07-08/1985
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2019-2-6 more...
9 - P0001108
Michel Caillaud
3391v Die Schwalbe 67 02/1981
4.ehrende Erwähnung
P0001108
(13+12)
#2
b) Sb4 nach c6
a) 1. 0-0-0
b) 1. Se5
play all play one stop play next play all
Henrik Juel: In part a) the castling is preserved by -1... d7xB -2.Sa2xB Bc3 -3.Bd5 Bd4 -4.Bf3 Bc3 -5.Be4xS Sg1 -6.Bd3 Kh1 -7.Bc4 Rh2 -8.Qh3 Kg2 -9.Qe6 Kh3 -10.Qa6 Kg4 -11.Bd5 Kf5 -12.Bg2 Sh3 -13.Bf1 Sf4 -14.g2 etc. White must uncapture quickly to prevent retrostalemate, and the uncaptured unit must be the dark-squared bB, which has to retract to f8 later in the retroplay to release wBg8, which is orig. wPa2 promoted on a8 or c8. Orig. wPb2 was captured on its file. (2003-4-7)
comment
Keywords: Castling (wg)
Genre: Retro
Reprints: C 64 Proof Games 2012
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2012-12-28 more...
10 - P0001109
Michel Caillaud
3392 Die Schwalbe 67 02/1981
Jean Roche gewidmet
3. Preis
P0001109
(11+14)
r#1
b) sLf5 statt sTf5
Henrik Juel: I believe the stipulation should read 'r#1'. Solutions: a) 1.Rd1 Bxf2#, b) 1.0-0-0 Qb2#. In b) an early play after g7xSf6 could be 1.Sg3 hxg3 2.Rh2 gxh2 3.axQb3 h1=Q 4.bxRc4 Bh2 5.g3 Qf3 6.Bg2 and later d7xQc6 and f6xBe5; orig. wBf1 can reach a2 via c6.
In a) this isn't possible, because orig. bBc8 was captured on b3 or c4. Here the early play after d7xSc6 and a2xb3 might be 1.Se4 Bg1 2.Sg3 hxg3 3.Rh2 gxh2 4.g3 h1=Q 5.Bg2 .. 6.Bf1 Qe4 7.Bg2; earlier White must have played his Ra1 to the f-file guarding f2, so 3... gxf2+ or 3... Lxf2+ wasn't an obligatory mating move. (2003-4-7)
more ...
comment
Keywords: Cant Castler, Castling (wg)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2008-8-25 more...
11 - P0001110
Michel Caillaud
3396 Die Schwalbe 67 02/1981
4. Preis
P0001110
(14+12)
Wieviele Züge sind seit dem letzten Bauernzug mindestens geschehen?
Renny Bosch: I believe the minimum number of moves since the last pawn move is 68, based on the following PG (or SPG?): 1. g4 Nc6 2. Bg2 Na5 3. Bc6 Nb3 4. axb3 Nf6 5. Nc3 Ne4 6. Nd5 Nc3 7. dxc3 Rg8 8. Qd4 Rh8 9. Qb6 axb6 10. Be3 Rg8 11. Bc5 Rh8 12. Bb4 Rg8 13. Ra5 Rh8 14. Rc5 bxc5 15. Ba5 Rg8 16. Bb6 Rh8 17. Ba7 Rg8 18. Bb8 Rh8 19. Ba4 Ra6 20. Kd2 Re6 21. Kd3 Re5 22. Kc4 Re4+ 23. Kb5 Rc4 24. bxc4 Rg8 25. Bb3 Rh8 26. Nh3 Rg8 27. Ra1 Rh8 28. Ra7 Rg8 29. Nb6 Rh8 30. Na8 Rg8 31. Nf4 Rh8 32. Nd5 Rg8 33. Ndb6 h6 34. Na4 b6 35. Ba2 Bb7 36. Bb1 Be4 37. g5 Bh7 38. g6 Rh8 39. gxh7 { the last pawn move } g6 40. Rb7 Bg7 { move bB, bK, bQ out of row 8 } 41. Ba7 Be5 42. Rb8 Kf8 43. Ka6 Kg7 44. Kb7 Qg8 45. Rf8 Kf6 46. Kc8 { allow bR to pass wK } Qg7 47. Rg8 Ke6 48. Kd8 Qf6 49. Ke8 Qf5 50. Kf8 Bf4 51. Kg7 Qg5 { reverse order of the two rooks }52. Rb8 Rc8 53. Rb7 Rd8 54. Bb8 Rc8 55. Ra7 Rd8 56. Ra5 Rc8 57. Ba7 Rb8 58. Rb5 Rb7 59. Bb8 Ra7 60. Rb3 Ra5 61. Ra3 Rb5 62. Ra1 Rb3 63. Ba2 Ra3 64. Bb3 Ra2 65. Rd1 Ra1 66. Rd2 Re1 67. Rd1 Rf1 68. Ra1 Rb1 69. Ra3 Rc1 70. Ba2 Ra1 71. Bb1 Ra2 72. Rb3 Ra3 73. Rb5 Rb3 74. Ra5 Ra3 75. Ra7 Rb3 76. Rb7 Ra3 77. Ba7 Rb3 78. Rb8 Ra3 79. Rh8 Qf6+ 80. Kf8 { move bK past wR } Qg7+ 81. Ke8 Kf6 82. Kd8 Be5 83. Kc8 Qg8+ 84. Kb7 Kg7 85. Ka6 Kf8 86. Kb5 Ke8 87. f3 Kd8 88. Ba2 Kc8 89. Bb1 Kb7 90. Ba2 Qg7 91. Rg8 Qf6 92. Bb1 Qe6 93. Ba2 Bh8 94. Rg7 { put wR into pocket, and final cleanup } Kc8 95. Ka6 Kd8 96. Kb7 Ke8 97. Kc8 Kf8 98. Kd8 Rb3 99. Bb1 Rb5 100. Ba2 Ra5 101. Bb8 Ra7 102. Bb1 Rb7 103. Ba7 Qc6 104. Ba2 Qb5 105. Bb1 Qb4 106. Ba2 Qa3 107. Rg8# (2007-4-24)
Michel Caillaud: the exact stipulation ends "mindestens geschehen".
(in english : "minimum number of moves since the last Pawn move?").
the last Pawn move is f2-f3,that must be interposed before g7-g6 as otherwise the 50-moves rule would have been violated.
the answer is a minimum of 15,0 moves with a retro-play running as :
-1.Tg7-g8# ...-16.f2-f3! ... -65...g7-g6
with 49,5 moves between g7-g6 and f2-f3 the 50-moves rule has been respected (2007-9-12)
Michel Caillaud: more detail on intended retro-play :
-1.Tg7-g8# … -4…De6-c6 … -8…Tb3-b5 -9.Kb5-a6 Ta3-b3+ -10.La7-b8 … -13…Kb7-c8 -14.Tg8-g7 Ld4-h8
-15.Tf8-g8 Df6-e6 -16.f2-f3! Dg7-f6 -17.Th8-f8 Dg8-g7 -18.Lb1-a2 Ta1-a3 -19.La2-b1 … -24… Kf6-g7 -25.Kb7-a6 Dg7-g8 -26.Tb8-h8 Ke5-f6 -27.Kc8-b7 … -28… Dh4-f6 -29.Ke8-d8 … -35… Td2-d1 -36.Ta3-b3 … -37.Lb3-a2 … -39.Th1-a1 Td1-d2 -40… Ta1-d1 -41.Kg7-f8 Ta3-a1 -42.La2-b3 …-48… Th8-b8 -52.Tb7-a7 … -53.La7-b8 … -55.Tg8-b8 … -59.Kç8-d8 Kf6-e5 -60.Kb7-ç8 Kg7-f8 -61.Tb8-g8+ Kf8-g7 -62.Kc8-b7+ Ke8-f8 -63.Tb7-b8 Lg7-d4 -64.Lb8-a7 Lf8-g7 -65.Ta7-b7 g7-g6 (2007-9-18)
Henrik Juel: After -1.Tg7-g8# the main parts of the resolution are
(s/w mean black/white)
sDa3 out, sTb7 to a3, wKe8 to b5, sKf8 to b7, wTg7 to h8 and sLh8 to d4, sD to g8, sKb7 via g7 to e5, sDg8 out, wKb5 to g7, sTa3 to d2, wTh8 to e1, sTd2 to h8, wTe1 to g8,
(the rooks have switched place)
wKg7 to b7, wTg8 to b8, wKb7 to c8, sKe5 to e8, sLd4 to f8,
-65... g7-g6 -66.g6xLh7
(so -16.f2 was needed to avoid draw by the 50 moves rule)
wTb8 to h1, wKc8 to b5, sD to d8, sLh7 to c8,
-88... b7-b6
wSa8 out, wLa7 to a5,
-99... b6xTc5
wTc5 to a1, wLa5 to c1,
-111.d2xTc3
sTc3 to a8 and wSa4 to b1, wLa2 to a4
-222.b3xSc4 a7xDb6 -223.a2xSb3 (2018-12-5)
Henrik Juel: It is difficult to avoid typos in such a mess
in line 3, wKd8 to b5, not e8
Michel also seems to have made some typos:
49.0 moves between -16.f2 and -65... g7, not 49.5
-25... Kf6, not 24 (may have implications for the solution) (2018-12-5)
more ...
comment
Keywords: 50 move rule
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: hpr, 2008-8-26 more...
12 - P0001111
Michel Caillaud
3469 Die Schwalbe 68 04/1981
P0001111
(13+10)
#4
Längstzüger
b) -wTh1
Welche der beiden Fassungen ist nebenlösig?
Keywords: Maximummer, Castling (wgsg)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-10-25 more...
13 - P0001112
Michel Caillaud
3601 Die Schwalbe 70 08/1981
3. Lob
P0001112
(13+12)
#1
1. exf8=S#? 1. Dxg7#
R: 1. h4-h5 Lc7-b8 2. Lb8-a7 Sc5-a6 3. La7-b8 Sd3-c5 4. Lb8-a7 Se1-d3 5. La7-b8 Sf3-e1 6. Lb8-a7 Sg1-f3 7. La7-b8 g2-g1=S 8. h3-h4 g3-g2 9. g2xSh3 Sg5-h3 10. Lb8-a7 Sf3-g5 11. La7-b8 Sh4-f3 12. Lb8-a7 Sf5-h4 13. Sh5-g7 Sg7-f5+ 14. La7-b8 Lb8-c7 15. Sf4-h5 Lc7-b8 16. Sd5-f4 Lb8-c7 17. Sc7-d5 g4-g3 18. Sa8-c7 Lc7-b8 19. Lb8-a7 g5-g4 20. a7-a8=S g6-g5 21. a6-a7 a7xXb6
play all play one stop play next play all
Keywords: Retro Opposition, Promotion (sSL)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-8-4 more...
14 - P0001113
Michel Caillaud
3605 Die Schwalbe 70 08/1981
Andrej Frolkin gewidmet
P0001113
(12+11)
Löse die Stellung auf!
R: 1. g7xLh8=S+ Sd8-f7 2. f7xSe8=D+ c7xDb8=T, a7xTb8=L
play all play one stop play next play all
Keywords: Allumwandlung, Promotion (DTLS), Cycle, Last Moves? (3)
Genre: Retro
Reprints: Die Schwalbe 110 04/1988
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2017-9-20 more...
15 - P0001114
Michel Caillaud
3676 Die Schwalbe 71 10/1981
3. ehrende Erwähnung
P0001114
(13+12)
#1
Mars-Circe
Keywords: Circe (Mars), Non-standard material, Promotion
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2019-2-3 more...
16 - P0001115
Michel Caillaud
3741 Die Schwalbe 72 12/1981
P0001115
(11+13)
Löse die Stellung auf!
R: 1. Kg4-g5 g7xTf8=S 2. Se4-d2 L~ 3. Th8-f8 4. Sg5-h7 Kf8-e7 5. Th1-h8+ e7-e8=L 6. Le8-d7 d7-d8=S 7. ~ Td8-c8 8. ~ Dc8-b8 Tb8-a8 9. Ta8-a7 ~ 10. a7-a8=T ~, h7-h8=D
Umwandlung der 5 fehlenden wBB in D, T, L und 2SS!
play all play one stop play next play all
Keywords: Promotion
Genre: Retro
Input: Gerd Wilts, 1995-6-3
17 - P0001116
Michel Caillaud
3871 Die Schwalbe 74 04/1982
2. ehrende Erwähnung
P0001116
(13+13)
h#1
Weiße Schläge: dxc, hxgxh. Schwarze Schläge: axb, exf, f4xLe3.
R: 1. h3-h2 g3xSh4 2. Sf3-h4 h2xBg3 3. Se5-f3 Sb2-a4 4. Sf3-e5 Sd3-b2 5. Se5-f3 Sf4-d3 6. Sf3-e5 Sg6-f4 7. Se5-f3 Sf8-g6 8. Sf3-e5 Sd7-f8 9. Se5-f3 Sb8-d7 10. Sf3-e5 Lb3-a2 11. Se5-f3 Tg7-f7 12. Sf7-e5+ Tg4-g7 13. h4-h3 Tf4-g4 14. h5-h4 Tf1-f4 15. h6-h5 Ta1-f1 16. g4-g3 Ta8-a1 17. g5-g4 a7-a8=T 18. g6-g5 a6-a7 19. g7-g6 a5-a6 20. a6xTb5 Tb4-b5 21. a7-a6 Tb5-c5

1. Rxc4 Re5# Not 1. Txb6 Sxb6#
play all play one stop play next play all
Henrik Juel: The retroplay shows that White has the move, so interpreting the stipulation as 'h#1.0 (who?)', the solution is 1.Rxc4 Re5# (2003-4-10)
comment
Keywords: Whose move?, Promotion, Retro Opposition
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: Yoav Ben-Zvi, 2018-4-2 more...
18 - P0001117
Michel Caillaud
3872 Die Schwalbe 74 04/1982
12. Lob
P0001117
(11+12)
h#2
b) sBh7 nach h6
a) 1. 0-0-0? 1. Kf7 Sxh7 2. Ke6 Sg5#
b) 1. 0-0-0 Sg6 2. Lb8 Sxe7#

Weiße Schläge: h2xg3, gxfxe, sLf8. Schwarze Schläge: a7xb6xc5; fxexdxc1=L.
R: 1. Ke3-e4 Sd6-b7 2. h2xDg3 Dg2-g3+ 3. Kd2-e3 Db7-g2 4. Ke1-d2 Dc8-b7 5. e4-e5 Dd8-c8 6. f3xLe4 Lb7-e4 7. Kf1-e1 Lc8-b7 8. Ke1-f1 b7-b6 9. Kf1-e1 Lb6-a7 10. ... La5-b6 11. ... Ld2-a5 12. ... Lc1-d2 13. ... d2xTc1=L 14. ... e3xTd2 15. ... e4-e3 16. ... f5xLe4
In dieser Stellung muß der wLe4 nach f1 zurückgespielt werden. Mit sBh7 kann der wLe4 nur entweder über f7 nach f1 zurück, so daß der sK bereits gezogen haben muß, oder der wLe4 kann über f5 zurück, wozu aber der sTa8 nach h8 zurückgezogen werden müsste, um f6-f5 zurücknehmen zu können.
play all play one stop play next play all
Henrik Juel: To make the retroplay plausible one should uncapture bQ early on g3 and retract it to d8. The wB could also get back to f1 via f5, but this would require retracting bRa8 to h8 before retracting bPf5, so castling is still illegal in part a). (2003-4-10)
Gerd Wilts: Hello Henrik, thank you for pointing out the inaccuracy of the solution, I will make the solution more precise soon. And thank you for adding all the other solutions! (2003-4-11)
comment
Keywords: Cant Castler, Castling (sg), Promotion (l)
Genre: h#, Retro
Computer test: Popeye C-Version 3.54 (2048 KB)
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-10-26 more...
19 - P0001118
Michel Caillaud
3950 Die Schwalbe 75 06/1982
2. Lob
P0001118
(10+4)
#2
b) wLh4
pièces rétro-volages
Keywords: Retro-volages, Castling (wk)
Genre: Retro
Reprints: (V) Die Schwalbe 89 10/1984
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-10-25 more...
20 - P0001119
Michel Caillaud
4014 Die Schwalbe 76 08/1982
2. ehrende Erwähnung
P0001119
(13+11)
s#3
Längstzüger
b) -wTg1
Keywords: Maximummer, Castling (wg)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-10-25 more...
21 - P0001120
Michel Caillaud
4225 Die Schwalbe 79 02/1983
6. Lob
P0001120
(11+13)
Beide 0-0 sind zulässig. Kann auch die schwarze 0-0-0 noch zulässig sein?
Weiße Schläge: cxb; fxe; sLf8. Schwarze Schläge: axb; fxe; hxgxhxg1=L. R: 1. f2xDe3 Lg6-f7 2. Lc2-d1 f7xTe6 3. Ld1-c2 De4-e3 4. Te5-e6 Db7-e4 5. Tc5-e5 Dc8-b7 6. Tc1-c5 Dd8-c8 7. Tb1-c1 Le4-g6 8. Lc2-d1 Lb7-e4 9. Ld1-c2 Lc8-b7 10. Lc2-d1 b7-b6 11. Ld1-c2 Le3-a7 12. Lc2-d1 b6-b5 13. Ld1-c2 a7xLb6 14. Lc2-d1 Lf4-e3 15. Le3-b6 Le5-f4 16. Lc1-e3 Lf4-e5 17. d2-d3 Le5-f4 18. Le4-c2 Lf4-e5 19. Lg2-e4 Le5-f4 20. Lf1-g2 Lf4-e5 21. g2-g3 Lh2-f4 22. h4-h5 Lg1-h2 23. h3-h4 h2xSg1=L 24. Sf3-g1 g3xSh2 25. Sg1-f3 h4xDg3 26. Dd3-g3 h5-h4 27. Dc2-d3 h6-h5 28. Dd1-c2 h7-h6 29. c2xSb3. In dieser Stellung ist aber Schwarz am Zug! Die schwarze Rochade ist also nicht zulässig.
play all play one stop play next play all
Keywords: Cant Castler, Castling (wksksg), Parity Argument, Promotion (l)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2001-2-19 more...
22 - P0001121
Michel Caillaud
4298v Die Schwalbe 80 04/1983
2. ehrende Erwähnung
P0001121
(12+14)
BP in 30,5
1. a4 c6 2. a5 Dc7 3. a6 De5 4. axb7 a5 5. b4 a4 6. b5 Ta5 7. b6 Sa6 8. b8=D a3 9. Dd6 a2 10. De6 dxe6 11. b7 Kd7 12. b8=T Kd6 13. Tb3 Kd5 14. Tf3 Ke4 15. Tf5 exf5 16. Sa3 Le6 17. Sb5 Lc4 18. La3 e6 19. Tc1 a1=S 20. d4 Sb3 21. d5 Sd2 22. d6 Sxf1 23. d7 Sg3 24. hxg3 Lb4+ 25. Kf1 Se7 26. Th6 Tb8 27. d8=L Sc8 28. Lh4 g5 29. g4 gxh4 30. g5 Le1 31. f3+
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Keywords: Ceriani-Frolkin Theme (DTsL), Unique Proof Game, Allumwandlung
Genre: Retro
Reprints: 12 Shortest Proof Games 11/1991
(A) Quartz 26 10-12/2004
Input: Gerd Wilts, 1995-6-3
Last update: Kevin Begley, 2011-5-18 more...
23 - P0001122
Michel Caillaud
4563 Die Schwalbe 84 12/1983
3. Preis
P0001122
(14+11)
#1 (wer?)
Weiße Schläge: axb; bxc; cxd; dxe. Schwarze Schläge: cxd und gxf. Entweder wurde der sBh auf seiner Linie geschlagen oder er hat sich umgewandelt und Weiß hat hxg geschlagen. Die Stellung kann nur aufgelöst werden, indem auf b1 eine schwarze Figur entwandelt wird (e2-e3 ist erst möglich, nachdem der sBd3 den wL entschlagen hat).
R: 1. Sg4-e5 Sd2-b1 2. Sh6-g4 Sf3-d2 3. Sf5-h6 Sh4-f3 4. Sg3-f5 Sg6-h4 5. Sh1-g3 Se7-g6 6. h2-h1=S Sg8-e7 7. h3-h2 Se7-g8 8. h4-h3 Sg8-e7 9. h5-h4 g7-g8=S 10. h6-h5 g6-g7 11. f5-f4 h5xLg6 12. Lh7-g6 h4-h5 13. g6xLf5 Lg4-f5 14. g7-g6 Le2-g4 15. Lg6-h7 Lf1-e2 16. Lh5-g6 Le2-f1 17. Lg4-h5 Lf1-e2 18. Ld1-g4 Le2-f1 19. Lc2-d1 Lf1-e2 20. Lb1-c2 e2-e3 21. h7-h6 Sd1-b2 22. b2-b1=L+ Se3-d1 23. Kd1-c1 Sf5-e3+
1. Ld2#? 1. Txc4#
play all play one stop play next play all
Renny Bosch: There is a typo here. As the retro play shows, B made the last move; therefore W wins with Bd2# (and not ... Rxc4??) (2007-7-8)
comment
Keywords: Promotion in the retro play, Whose move?
Genre: Retro
Reprints: Die Schwalbe 103 04/1987
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2001-2-19 more...
24 - P0001123
Michel Caillaud
5342 Die Schwalbe 96 12/1985
Spezialpreis
P0001123
(11+2)
Letzter Zug?
R: 1. La1xBb2
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more ...
comment
Keywords: Last Move? (LxB), Non-standard material, Type A, Economy record, Type B (a fortiori)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2012-4-29 more...
25 - P0001490
Michel Caillaud
364 Europe Echecs 256 04/1980
3. ehrende Erwähnung
P0001490
(11+14)
Auf welchen Feldern hat der schwarze Damenturm, der eine gerade Anzahl von Zügen gemacht hat, im Verlauf der Partie gestanden?
Schwarze Schläge: hxgxfxexd; wLf1. Weiße Schläge: bxa; hxg8=L.
R: 1. Lg8-d5 f7-f6 2. h7xTg8=L Th8-g8 3. h6-h7 Th7-h8 4. h5-h6 Th6-h7 5. h4-h5 Ta6-h6 6. h3-h4 Ta7-a6 7. h2-h3 a6-a5 8. f2-f3 Ta5-a4 9. Ka4-b3 Tb5-a5.
Der schwarze Damenturm stand auf den Feldern a8, a7, b8, h6, h7, h8, g8.
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Keywords: Non-standard material, Retro Opposition
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Yoav Ben-Zvi, 2018-4-3 more...
26 - P0001493
Jacques Rotenberg
Michel Caillaud

367v Europe Echecs 259 07/1980
P0001493
(12+10)
#3
1.0-0! 0-0-0?
Es ist nur noch eine der beiden Rochaden möglich.Der sLg8 ist umgewandelt.Der sLc8 wurde auf seinem Ausgangsfeld eschlagen. Unter der Annahme, dass noch beiden Rochaden möglich sind, gibt es folgende Fälle, wie der sLg8 aus Umwandlung entstanden sein kann:
1) sBf7 (oder h7) schlägt zweimal zur Umwandlung auf f1. Da der fehlende schwarzfeldrige wLc1 nicht auf f1 oder g2 geschlagen werden konnte, hätten sich die wBb2 und d2 auf g8 umwandeln müssen, um als Schlagobjekt zur Verfügung zu stehen.Dazu stehen aber nicht genügend schwarze Schlagobjekte zur Verfügung.
2) wBf2 und g2 schlagen über Kreuz, sBg7 schlägt einmal nach f1. Dann hätte sich der wBd2 nach 3 Schlägen auf g8 umwandeln müssen. Das macht insgesamt 5 Schläge. Da der sLc8 und die sDd8 nicht als Schlagobjekte zur Verfügung stehen, ist dies nicht möglich.
3) der sBf7 wandelt sich nach 4 Schlägen auf b1 um. Die sBg7 und h7 haben dann nicht geschlagen und stehen nicht als Schlagobjekte
zur Verfügung (der Überkreuzschlag der wBf2 und g2 würde zwei weitere Schlagfälle erfordern und bringt damit kein weiteres schwarzes
Schlagobjekt). Für die wBB stehen in diesem Fall also nur der fehlende S und der fehlende schwarzfeldrige sLf8 zur Schlag Verfügung. Der wBa2 kann also nicht nach c4 geschlagen haben, um dort geschlagen zu werden. Der wBa2 muss also noch auf dem Brett sein, was aber nicht möglich ist, da der dann mit zwei Schlägen auf weißen Feldern nach c4 geschlagen haben müsste.
play all play one stop play next play all
Version M. Caillaud
Renny Bosch: It remains to show that White may still castle. Here is a (S)PG to that end: 1. Nc3 f5 2. Na4 g5 3. Nb6 h5 4. Nxc8 Kf7 5. Nb6 Bg7 6. Na4 Nf6 7. Nc5 Qg8 8. Nf3 Ke8 9. Ne5 Qxa2 10. Nf7 Qxb2 11. Nh6 Qe5 12. d4 g4 13. dxe5 g3 14. exf6 f4 15. fxg7 f3 16. gxf3 g2 17. g8=B gxf1=B 18. Bd5 Bh3 19. c4 Be6 20. Ra6 Bf7 21. Re6 Nc6 22. Bf4 h4 23. Bg3 hxg3 24. fxg3 Bg8 25. Qd4 Bf7 26. Qg7 Bg8 (2007-7-19)
comment
Keywords: Castling (wksg), Castling, mutual exclusive
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2002-6-2 more...
27 - P0001497
Michel Caillaud
371 Europe Echecs 261/262 09/1980
5. ehrende Erwähnung
P0001497
(13+7)
#1
1. 0-0#? 1. Kf2#!
Schlagfälle: wLf1, Bh2xg3xf4xe5xd6xTc7, Bd4xLc5xBb6xBa7; h7xTg6, e7xLd6, sBa und b auf ihren Linien. Umwandlung des wBh2 auf c8 und des Bd2 auf a8 in Läufer. Letzter Zug: R. 1. d6-d5, dann z.B. Sf6xLe4. Nach Entwandlung eines wL auf a8 und Rücknahme von Bd4xLc5xBb6xBa7 muß der wBd4 nach d3 zurück, damit der sLc5 nach f8 zurückgespielt werden kann. Entweder der wK oder der wTh1 haben bereits gezogen.
play all play one stop play next play all
Keywords: Cant Castler, Castling (wk), Promotion
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1997-3-20 more...
28 - P0001503
Michel Caillaud
376 Europe Echecs 261/262 09/1980
2. Preis
P0001503
(14+15)
h#1
1. gxf3ep Dxh4#
Letzter Zug: f2-f4
play all play one stop play next play all
"Si belle en ce miroir..."
Henrik Juel: White has some 20 plausible last moves, so it is amazing that only one works. -1.f2 a3 -2.Ba2 b4xR -3.Rg3 b5 -4.Rg1 b6 -5.Bd5 a6 -6.Bg2 a7 -7.Bf1 c7xPd6 -8.g2xS Sf4 etc. (2003-3-24)
comment
Keywords: En passant, En passant as key, Last Move? (B)
Genre: Retro
Reprints: 971 FIDE Album 1980-1982 1988
(17) diagrammes 112 01-03/1995
Input: Gerd Wilts, 1995-6-3
Last update: Marcin Banaszek, 2016-2-24 more...
29 - P0001506
Michel Caillaud
379 Europe Echecs 265 01/1981
Dr L. Ceriani zum Gedenken
1.-2. Preis e.a.
P0001506
(14+10)
#1 (wer?)
Henrik Juel: With stipulation '#1 (who?)' the solution is: 1... Sg5#, not 1.Re1??, because Black has the move. -1.Sc3 Sf6 ... -5.Sb6 Sa1 -6.Sc8 S=a2 -7.Sb6 a3 -8.Sc8 a4 -9.S=c7 a5 -10.b6xP a6 -11.a5xQ Qb3 -12.a4 Qd1 -13.c2xP d4 -14.g5 e5xS -15.Sb3 Qe1 -16.Sc5 Qd1 -17.Sd3 a7 -18.Se1 e6 -19.Sg2 Qf1 -20.Re1 e7 -21.fRe2 Rf2 etc. To open the cage we need a man on f1; the only possibility is a bQ, uncaptured on b6. But then we also need a man to screen on g2; uncapturing a bS on d3 and retracting it to g2 is too slow, so on d3 we uncapture a bP, which in turn on d4 uncaptures a wS, which screens on g2. A very good and difficult retro. (2003-4-25)
Yoav Ben-Zvi: The side-to-move is determined by the Retro opposition that occurs when the uncaptured WN needs to retract to e1 (on its way to g2) while the uncaptured BQ shuffles between e1 and d1. (2018-4-3)
comment
Keywords: Whose move?, Retro Opposition
Genre: Retro
Reprints: 970 FIDE Album 1980-1982 1988
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-10-22 more...
30 - P0001511
Michel Caillaud
383 Europe Echecs 268 04/1981
P0001511
(12+13)
h#2 (AP, RV)
Schwarz Schläge: fxe; gxfxe. Weiße Schläge: gxf; hxgxh. R: 1. a2-a4 c7-c6 2. Ta3-b3 d7-d6 3. Ta6-a3 e7-e6 4. Tf6-a6 b5-b4 5. Tf7-f6 b6-b5 6. Sh8-g6
1. bxa3ep (bxc3ep) Dxe4 2. 0-0-0 Dxc6#
oder 1. exd3ep Txb3 2. 0-0-0 Dxc6#
play all play one stop play next play all
Keywords: En passant, Partial Retro Analysis (PRA), Castling (sg), a posteriori (AP)
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2001-2-19 more...
31 - P0001517
Michel Caillaud
389v Europe Echecs 271 07/1981
Lob
P0001517
(12+9)
h#2
Henrik Juel: Solution: 1.g5 hxg8=QR 2.gxf4 Kd2#, not 2... 0-0-0??.
Only if White had the move would he be entitled to castle: -1... h5 -2.Sf2 h6 -3.Sd3 Kh1 -4... Bg1 -5... Kh2 .. -8... Kh5 -9... Bh2 -10.Sf2 Bg3 -11.h2 Bh4 -12.Sd3 Bf6 etc. (2003-3-31)
Yoav Ben-Zvi: The need for a tempo move (by WK or WR) arises because WN needs to stand on f2 when Black retracts Bg3-h2. I dont think this is Retro opposition because the role of the WN is positive (Retro Shield) rather than negative. (2018-4-3)
Henrik Juel: Now I notice that Ph7 is a so-callet Volet pawn (coming diagonally from c2)
The definition of Retro Opposition in the latest Album (2010-12, p.620) is:
'In a particular phase of the retro-play it can be proved which side is to play, despite there being mobile units on both sides.' (2018-4-3)
Mario Richter: The position can also be easily resolved by an early retraction of f3-f4, in this case wK had to move earlier in the game not because of RO but to let original wRook h1 out ... (2018-4-5)
Yoav Ben-Zvi: The FIDE Album Theme Index tries to save space so the definitions contain only what is deemed to be the essential core of the theme. In some cases, such as the definition for Retro Opposition, this is carried too far and an essential characteristic is left out. To see this note that the definition (given above) does not distinguish Retro Opposition from the Parity Argument theme. Unless Parity is considered to be a particular type of Retro Opposition, the FIDE Album definition must be rejected.
I think that any satisfactory definition of RO will state that a thematic retraction is prevented (not enabled) by certain circumstances. If this is the case then I see no Retro Opposition here. (2018-4-9)
comment
Keywords: Cant Castler, Retro Opposition, Castling (wg), Volet Pawn
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-4-3 more...
32 - P0001524
Michel Caillaud
396 Europe Echecs 261/262 09/1981
1.-2. Preis e.a.
P0001524
(14+11)
Wer ist am Zug?
R: 1. Sa2-c1 h7xSg6 2. Sf8-g6 Lc1-d2 3. Se6-f8 Ld2-c1 4. Sc5-e6 Lc1-d2 5. Sb7xBc5 Ld2-c1 6. Sd6-b7 Lc1-d2 7. Sb5-d6 Ld2-c1 8. Sa3-b5 Lc1-d2 9. Sb1-a3 Kh2-h1 10. Sd2-b1 Kh3-h2 11. Kg1-f1 c6-c5 12. Sf1-d2 Ld2-c1 13. Sh2-f1 Lc1-d2 14. Tf1-e1 c7-c6 15. 0-0 Dg2-f3 16. Tf3-e3 Le3-c1 17. Sc1-a2 Ld4-e3 18. Te3-f3 Lg7-d4 19. f3-f4
play all play one stop play next play all
Weiße Schläge: hxg; gxf; dxe; axb. Schwarze Schläge: hxg; dxc. Schwarzer Bc7 wurde auf seiner Linie geschlagen, sBa7 wandelt sich auf a1 um. Schwarz ist am Zug.
Yoav Ben-Zvi: The side-to-move is determined by 2 Retro oppositions: The BB is prevented from retracting to d2 when the WN stands there on its way to h2 and White un-castling is prevented with BB standing on d2. The 2 tempo moves provided by a BP that is uncaptured on c5 are not enough to overcome both oppositions if the diagram position is White-to-move. (2018-4-3)
comment
Keywords: Retro Opposition, Castling (wk), Whose move?
Genre: Retro
Reprints: 972 FIDE Album 1980-1982 1988
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-4-3 more...
33 - P0001530
Michel Caillaud
402 Europe Echecs 280 04/1982
P. Debreu gewidmet
3. Preis
P0001530
(12+14)
BP in 27,5
1. a4 Sc6 2. a5 Se5 3. a6 Sc4 4. axb7 a6 5. b8=S Lb7 6. Sc6 dxc6 7. b4 Dd3 8. b5 Td8 9. b6 La8 10. b7 Td5 11. b8=D+ Kd7 12. Db2 Ta5 13. Df6 exf6 14. e4 La3 15. e5 c5 16. e6+ Kc6 17. e7 Lb2 18. e8=T Da3 19. d4 Kb5 20. Lg5 fxg5 21. Te6 g4 22. Tg6 hxg6 23. d5 Th3 24. d6 Td3 25. d7 Sd6 26. d8=L Kc4 27. Lg5 Sf6 28. Dxd3+
play all play one stop play next play all
"Quatre Mousquetaires"
comment
Keywords: Allumwandlung, Ceriani-Frolkin Theme (SDT), Unique Proof Game, Phoenix (L)
Genre: Retro
Reprints: feenschach 63 12/1982
11 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2015-1-9 more...
34 - P0001533
Michel Caillaud
405 Europe Echecs 283 07/1982
Lob
P0001533
(11+12)
Wieviel Rochaden sind höchstens legal?
R: 1. d4xLe3 Lc1-e3 2. c5xDd4 g4xLh5 3. Lg6-h5 g3-g4 4. Lf5-g6 f2xLg3 5. Ld6-g3 Dd1-d4 6. Lf8-d6 Dd2-d1 7. e7-e6 Dd1-d2 8. Lc8-f5 d2xDc3 9. Dd3-c3 a3-a4 10. Dd8-d3 a2-a3 11. d7xLc6 Lg2-c6 12. b6xSc5 Lf1-g2 13. a7xSb6 g2xSh3. In dieser Stellung ist aber Schwarz am Zug, so daß die Auflösung illegal ist. Es sind also maximal 3 Rochaden zulässig.
play all play one stop play next play all
Keywords: Cant Castler, Castling (wkwgsksg), Parity Argument
Genre: Retro
Reprints: 974 FIDE Album 1980-1982 1988
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2001-2-19 more...
35 - P0001535
Michel Caillaud
407 Europe Echecs 286 10/1982
Roger Diot zum Gedenken
3. ehrende Erwähnung
P0001535
(13+11)
#1
R: 1. Se6-g5 Sc6-b8 2. Sc7-e6 Sd4-c6 3. Sa8-c7 Sb3-d4 4. a7-a8=S Sc1-b3 5. a6-a7 Sb3-c1 6. a5-a6 Sc1-b3 7. a4-a5 Sb3-c1 8. Se6-f8 Sc1-b3 9. Sc7-e6 Sb3-c1 10. Sa8-c7 Sc1-b3 11. a7-a8=S Kg6-h6 12. a6-a7 c2-c1=S 13. a5-a6 c3-c2 14. b4xBa5 c4-c3 15. c3xLb4 Ld6-b4 16. c2-c3 Lf4-d6 17. a3-a4 Lh6-f4 18. a2-a3 Lf8-h6 19. h6-h7 g7xSf6
play all play one stop play next play all
Schwarz Schläge: gxf6; hxgxf. Weiße Schläge: dxe3; exf3; fxg; cxbxa. Der schwarze Bauer a7 wurde auf seiner Linie geschlagen. Um die Stellung aufzulösen, muß der sLf8 über h6 auf sein Ausgangsfeld zurückgespielt werden. Schwarz ist am Zug.
Yoav Ben-Zvi: When the second unpromoted WP uncaptures a BB on b4 it must retreat in all haste to f8 so that BK must stand on g6 (not h6) and unpromoted BP must stand on c4 (not c5). This determines the side-to-move in the diagram position. Is it justified to consider a conflict between pieces of the same color a Retro opposition? (2018-4-3)
comment
Keywords: Retro Opposition, Promotion
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-4-3 more...
36 - P0001540
Michel Caillaud
412 Europe Echecs 289 01/1983
5. ehrende Erwähnung
P0001540
(14+10)
Wo wurde der schwarze Damenläufer geschlagen?
Auf c8. R. 1. Tf2xTg2+ Td1-d2 2. b6-b5 Ta1-d1 3. a7xLb6 Ld4xBb6 4. b7-b6 Lc3xBd4 5. d5-d4 Ld2-c3 6. d6-d5 Lc1-d2 7. d7-d6 d2-d3 8. Sd3-e1
Weder der wTd2 noch der wLc1 können den schwarzen Damenläufer geschlagen haben. Dieser muß also auf c8 geschlagen worden sein.
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Renny Bosch: A better argument is: As the retro play shows, all 5 black pawns a7 through e7 were still at their starting locations, yet the bR a8 must have come out to get captured by one of the white pawns; therefore bB c8 must have been captured at c8 to clear the way. (2007-9-2)
comment
Keywords: Last Moves?
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-6-25 more...
37 - P0001543
Michel Caillaud
414 Europe Echecs 289 01/1983
5. Preis
P0001543
(15+13)
BP in 30,5
1. h4 h5 2. Th3 Th6 3. Td3 Tf6 4. Td6 Tf3 5. exf3 a6 6. Lb5 axb5 7. c4 Ta3 8. Da4 Td3 9. Da5 Td4 10. a4 Tg4 11. fxg4 f6 12. gxh5 Kf7 13. h6 Kg6 14. h7 Kh6 15. h8=S Kh7 16. Sg6 Sh6 17. Sf4 Kg8 18. Sd5 Kf7 19. Sb6 Ke8 20. Sa8 b6 21. Ta3 Lb7 22. Tf3 Le4 23. Tf5 Lc2 24. f3 Lb3 25. Kf2 La2 26. b3 Sc6 27. Lb2 Db8 28. Le5 Kd8 29. Lh2 Kc8 30. Kg3 Kb7 31. Da6+
play all play one stop play next play all
"A la recherche du temps perdu"
comment
Keywords: Unique Proof Game, Non-standard material, Loss of tempo (k7), Promotion (S)
Genre: Retro
Reprints: 56 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-27 more...
38 - P0001546
Michel Caillaud
417 Europe Echecs 292 04/1983
Dr. L. Ceriani zum Gedenken
2. ehrende Erwähnung
P0001546
(14+12)
Wo wurde die sD geschlagen?
Henrik Juel: The problem doesn't involve the 50 moves rule: from f7-f6 to g6-g5 just 29 moves are needed. Rather it shows the Ceriani idea of capturing bQ early on d8 with a wS to make room for bK. Retroplay: -1.Rh2 g5xQ -2.Rh3 g6 -3.Bh2 Rg1 etc. (2003-3-3)
Michel Caillaud: The 50 moves rule is used to refute the try -1.Rh2xQg2? (in that case, 53,5 moves separate g5xQh4 and f7-f6) (2003-3-7)
Henrik Juel: Very nice; unfortunately the try was too well hidden for me. (2003-3-17)
Renny Bosch: That comment about the 50-move rule defeating the try -1 Rh2xQg2 requires further explanation. The retro play must go like this: The bP at h4 must uncapture something (the wQ, of course) and retract to g6 in order to allow the Rooks and Kings to retract out of the bottom row. But then the only way that a bR can return home to h8 is for the wS at h5 to retract somewhere, and the only possible path goes through f6, because the wP's at g3 and f4 cannot retract until the wB (which has to be uncaptured at g6) has returned home to f1. With a wS at f6, the bK must be able to go to d8 to excape check. Therefore the bQ must have been captured at d8. So what did I overlook? (2007-10-20)
Henrik Juel: I appreciate your comments, Renny. Here you seem to have overlooked that bPh4 need not retract all the way to g6. With that bP on g5 there is still enough room for the kings and rooks to get out of row 1. But it takes a lot of moves including two screenings by bQ on b1 (to let bK retract from b2 to c1 with a wR on a1). I did not check Michel's count. (2007-10-22)
Renny Bosch: Wow! Formidable! That really brings out the full beauty of this composition. Thanks for your explanation, Henrik. (2007-10-24)
AV: Essai en prenant la DN en g2 : Rg2, Da5, Ta1, Tb6, Fh2, Ch1, Ch5, Pa2, a3, c2, d2, e2, f2, f4, g3 (15)/ Re8, Dd8, Tb4, Tb5, Fc8, Ff8, Pb7, c7, d7, e7, f7, g5, g7 (13) : 1...f6 2.Da6 Rf7 3.Da5 Rg6 4.Da6 De8 5.Da5 Df7 6.Da6 Db3 7.Da5 Db1 8.Rf3 Rf5 9.Re3 Rg4 10.Da4 Rh3 11.Db3 Rg2 12.De6 Rf1 13.Dd6 Re1 14.De6 Rd1 15.Dd6 Rc1 16.De6 Rb2 17.Dd6 Df1 18.De6 Dh3 19.Tg1 Df5 20.Tg2 Ra1 21.Fg1 Tb1 22.Th2 Tf1 23.Th4 Rb1 24.Tg4 Rc1 25.Fh2 Rd1 26.Rf3 Tb1 27.Tb5 Tc1 28.Tb1 Tg1 29.Ta1 Tb1 30.Dd6 Rc1 31.De6 Rb2 32.Dd6 Tg2 33.Fg1 Th2 34.De6 Th4 35.Fh2 Tg1 36.Tc1 Tg2 37.Fg1 Tgh2 38.Ta1 T2h3 39.Fh2 De5 40.Tg1 Dd6 41.Rg2 De5 42.Rf1 Dd6 43.Re1 De5 44.Tf1 Dd6 45.Fg1 Th2 46.Rd1 Tg2 47.Fh2 Th3 48.Th4 Ra1 49.Rc1 Tg1 50.Td1 Te1 51.Fg1 Th2 52.Dg4 Tg2 53.Fh2 Tgg1 54.Th3 Tgf1 55.Dh4 gxh4 56.Fg1 Dc6 57.Th2 Dg2 58.Txg2 Mais la partie aurait été nulle (règle des 50 coups). Donc la DN a été prise à domicile (en d8). (2007-10-25)
comment
Keywords: 50 move rule
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2003-8-24 more...
39 - P0001548
Michel Caillaud
419 Europe Echecs 295 07/1983
Roger Diot zum Gedenken
3. Preis
P0001548
(14+13)
#1 (wer?)
R: 1. Sc3-b5 Se6-g7 2. Sa2-c3 Sc7-e6 3. Sc1-a2 Sa8-c7 4. c2-c1=S a7-a8=S 5. c3-c2 a6-a7 6. c4-c3 a5-a6 7. c5-c4 a4-a5 8. Sd4-c6 Sg6-h8 9. Sf5-d4 Se5-g6 10. Sg7-f5 Sc4-e5 11. Sf5-g7 Sb6-c4 12. Sg7-f5 Sa8-b6 13. Sf5-g7 a7-a8=S 14. Sg7-f5 a6-a7 15. Sf5-g7 a5-a6 16. Sg7-f5 b4xBa5 17. Sf5-g7 c3xDb4 18. De4-b4 c2-c3 19. Dh7-e4 Dh8-g8 20. c6-c5 Tg8-f8 21. c7-c6 Kf8-f7 22. Sf5-g7
4 retrofreie Springer
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AV: Il me semble que le 17e coup est plutôt Sg7-f5 et donc ce sont les Noirs qui ont le trait et matent par ...Sd6#. (2005-6-9)
hj = Henrik Juel, Denmark: I agree; Black has the move and mates by 1... Sd6#. The retroplay with abbreviated notation (the written square is where the man retracts to) and with white retractions written first is something like -1.Se6 Sc3 -2.Sc7 Sa2 -3.Sa8 Sc1 -4.S=a7 S=c2 -5.a6 c3 -6.a5 c4 -7.a4 c5 -8.Sg6 Sd4 -9.Se5 Sf5 -10.Sc4 Sg7 -11.Sb6 Sf5 -12.Sa8 Sg7 -13.S=a7 Sf5 -14.a6 Sg7 -15.a5 Sf5 -16.b4xPa5 Sg7 -17.c3xDb4 De4 -18.c2 Dh7 -19.Dh8 c6 -20.Tg8 c7 -21.Kf8 Sf5 etc. By the way, your comments are very much appreciated, AV; but it would make it easier for some of us, if your text was in English. (2005-6-13)
comment
Keywords: Whose move?, Retro Opposition, Promotion
Genre: Retro
Input: Gerd Wilts, 1995-6-3
40 - P0001550
Michel Caillaud
421 Europe Echecs 295 07/1983
A. Hazebrouck gewidmet
1. Preis
P0001550
(13+12)
BP in 35,5
1. h4 c5 2. h5 c4 3. Th4 c3 4. Tc4 b5 5. g4 b4 6. Lg2 b3 7. Lc6 bxa2 8. b4 a5 9. b5 a4 10. b6 a3 11. La4 Sc6 12. b7 d5 13. b8=D d4 14. Dd6 d3 15. Dg6 dxc2 16. d3 fxg6 17. Ld2 c1=L 18. Db3 c2 19. La5 Lh6 20. Sd2 c1=L 21. Sf1 Lcg5 22. f4 Kf7 23. 0-0-0 a1=L 24. fxg5 a2 25. gxh6 Kf6 26. Sh2 Kg5 27. Tf1 Lf6 28. Tff4 a1=L 29. Kb1 Lae5 30. d4 Lb7 31. dxe5 Dd2 32. exf6 Te8 33. f7 Sf6 34. Dd3 Sd7 35. Ld1 Sdb8 36. Sgf3+
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5 Frolkin-Ceriani-Umwandlungen: 4 schwarze Läufer und 1 weiße Dame! Eine der bahnbrechenden frühen KBPs.
Silvio Baier: Der wesentliche thematische Inhalt ist bereits nach 31,5 Zügen erreicht. Bis dahin ist es C+ (Euclide 0.98). (2010-8-4)
comment
Keywords: Ceriani-Frolkin Theme (llllD), Unique Proof Game, Castling, Promotion
Genre: Retro
Reprints: 25 Shortest Proof Games 11/1991
(1) diagrammes 103 10-12/1992
(A) Quartz 22 10-12/2002
(8-a) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2011-10-15 more...
41 - P0001561
Michel Caillaud
432 Europe Echecs 304 04/1984
Lob
P0001561
(8+13)
Kürzestes h#?
R: 1. a7-a5 e3xLf4 2. Ld6-f4 d2xTe3 3. Ta3-e3 b4-b5 4. Ta6-a3 b3-b4 5. Tc6xBa6 a5-a6 6. Tc8-c6 a4-a5 7. Tg8-c8 a3-a4 8. Lf8-d6 a2-a3 9. e7xDf6
1. ... bxa6ep 2. Txe2 axb7 3. Td2 b8=D 4. De2 Db1#
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AV: Solution apparente à rejeter : 1 Dc6? bxc6 2 Fd7 cxd7 3 Re1 d8D 4 Rf1 Dd1#. (2005-6-15)
comment
Keywords: En passant, Last Moves?
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2013-8-21 more...
42 - P0001568
Michel Caillaud
438 Europe Echecs 310 10/1984
Lob
P0001568
(12+13)
h#1,5*
* 1. ... ... 2. 0-0-0 Tb8#
1. ... d6 2. Lf7 (nicht 0-0-0?) Tb8#
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Schlagfälle und Umwandlungen: axb, bxc, cxd, h=; dxc, exf, fxe, hxg, a=
Henrik Juel: Maybe the stipulation should be h#1: 1.0-0-0 Rb8#. The castling is preserved by -1.Bb8 Ba5 -2.Kg1 Bb6 ... -10.Kb4 Bb6 -11.Ka5 Ba7 -12.Ka6 g4 -13.Kb7 Bb6 -14.Kc6 Ba5 -15.Rb6 Ba6 etc. (2003-4-14)
Michel Caillaud: Correct stipulation : h#1,5*
Set : 1.0-0-0 Rb8#
Play : 1...d6 2.Bf7 (not 0-0-0?) Rb8# (2003-4-15)
Yoav Ben-Zvi: Release of the position without moving BK and BRa8 requires that WK retracts to c6 (to shield the BK from WBa4) via a3,b4,a5,a6,b7. When WK is retracted from a5 to a6, BB must be standing on a7 (to shield WK from BRa8) and Black must respond with retraction of BPg4-g3. This implies that, when WK is retracted from b4 to a5, BB cannot stand on a7 (as Black would then need to use his only tempo retraction too early) so it stands on b6 while WB stands on b8 (WB cannot stand on a7 as this would be a Retro-opposition preventing Black's following retraction BBa7-b6). WK does not have a triangulation available on the retro-path from h1 to b4 so the configuration of WKb4, WBb8, BBb6, BPg3 with White to play the next retraction can only be achieved, under the assumption of Black retaining castling rights, if it is Black to move in the diagram position. This means 0-0-0 is available in the set play but not in the solution (reversed because of the H#1.5 stipulation). (2018-4-5)
comment
Keywords: Cant Castler, Retro Opposition, Castling (sg)
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-4-6 more...
43 - P0001577
Michel Caillaud
447 Europe Echecs 316 04/1985
2. Preis
P0001577
(14+11) C+
BP in 26,5
1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 hxg2 5. h4 g5 6. h5 g4 7. Th4 g3 8. Sh3 g1=L 9. Lg2 Le3 10. Lc6 g2 11. dxe3 g1=T+ 12. Kf2 Tg3 13. e4 Tb3 14. axb3 f5 15. Ta6 f4 16. La4 f3 17. Kg3 f2 18. Th6 f1=D 19. Dd6 Df7 20. Lf4 Dc4 21. bxc4 a5 22. Lb3 a4 23. Da6 a3 24. Ld6 a2 25. Sf4 axb1=S 26. La2 Sc3 27. bxc3
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Erstdarstellung einer Frolkin-Ceriani-Allumwandlung in einer eindeutigen KBP.
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comment
Keywords: Allumwandlung, Ceriani-Frolkin Theme (dtls), Unique Proof Game, Homebase (S)
Genre: Retro
Computer test: Euclide 0.93
Reprints: 13 Shortest Proof Games 11/1991
(19) diagrammes 15 07-09/1994
Thema Danicum 106 2002
(B) Quartz 26 10-12/2004
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2013-1-18 more...
44 - P0001598
Michel Caillaud
468 Europe Echecs 334 10/1986
P0001598
(15+11)
#1 (wer?)
1. ... c1=S# (1. Sxb3#??)
R: 1. Sg2-e1 La2-b1 2. Sh4-g2 Lb1-a2 3. Sg6-h4 La2-b1 4. Sh8-g6 Lb1-a2 5. Sf7-h8 La2-b1 6. Sd8-f7 Lb1-a2 7. Sc6-d8 La2-b1 8. Sb4-c6 Lb1-a2 9. Sa2-b4 b4-b3 10. Sc1-a2 ... 11. Se2-c1 ... 12. Sg3-e2 ... 13. Sh5-g3 ... 14. Sg7-h5 ... 15. Se8-g7 ... 16. Sc7-e8 ... 17. Sa8-c7 ... 18. a7-a8=S ... 19. a6-a7 ... 20. a5-a6 ... 21. a4-a5
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Springerkreisel
Henrik Juel: Black has the move; the retroplay is -1.Sg2 Ba2 ... -8.Sb4 Bb1 -9.Sa2 b4 -10.Sc1 Ba2 ... -17.Sa8 ... -18.S=a7 etc. (2003-4-22)
Renny Bosch: Aside from that sensational 1 5/8 full circle Knight tour, this composition has some additional challenges. One never really knows one has seen all of a composition's beauty until one has actually produced a proof game. In this case a pawn analysis shows that white Pawns h and g have captured on g and f, exd, dxc, cxb6, bxc3, and a has promoted, black Pawn a has captured on b, and h has promoted. The question is, what happened to the piece that the black h Pawn promoted to? It cannot be one of the pieces still on the board, so it must have been one of the white Pawn capturees, but which one? The only way to unlock the central cluster is to uncapture a white Knight on b5, then walk the bK to b5 and the wQ to d4, after which the wPd6 can uncapture from e5.

Here is a PG (as pretty as I could make it) that shows the whole thing: 1. a4 b5 2. c4 c6 3. c5 Qb6 4. cxb6 c5 5. Ra3 c4 6. Re3 c3 7. Re6 c2 8. e4 Na6 9. e5 Nc5 10. a5 Na4 11. h4 Nc3 12. bxc3 Bb7 13. Ba3 Bd5 14. Bc5 Bb3 15. Be3 b4 16. g4 Rc8 17. g5 Rc4 18. Qe2 Re4 19. Qd3 Kd8 20. Qd4 Kc8 21. Bc4 Kb7 22. Bd5+ Ka6 23. Ke2 Kb5 24. Kd3 f5 25. Rh2 f4 26. Rg2 f3 27. Rg3 h5 28. Rg4 Nf6 29. gxf6 g5 30. Rf4 g4 31. Ne2 Rg8 32. Ng1 Rg5 33. Ne2 Rf5 34. Ng1 Bh6 35. Ne2 Bg5 36. hxg5 h4 37. Ng1 h3 38. Ne2 h2 39. Ng1 h1=Q 40. Ne2 Qh8 41. Ng1 Qb8 42. Ne2 Qd6 43. exd6 a6 44. Qe5 Ba2 45. Nd4+ Kc5 46. Na3 Bb1 47. Nab5 axb5 48. a6 Ba2 49. a7 Bb1 50. a8=N Ba2 51. Nc7 Bb1 52. Ne8 Ba2 53. Ng7 Bb1 54. Nh5 Ba2 55. Ng3 Bb1 56. Nge2 Ba2 57. Nc1 Bb1 58. Na2 b3 59. Nb4 Ba2 60. Nbc6 Bb1 61. Nd8 Ba2 62. Nf7 Bb1 63. Nh8 Ba2 64. Ng6 Bb1 65. Nh4 Ba2 66. Ng2 Bb1 67. Ne1 (2007-12-11)
Brassaud: Fantastic ride of the white knight, bravo Michel Caillaud. Yes we can unpromote rook e4 still present on the board. PG 1) c4, f5 2) Sh3, f4 3) Sg1, c6 4) Dc2, b5 5) Db3, Sa6 6) Da4, Sc5 7) Dd1, Se4 8) c5, Sd6 9) g4, Sf6 10) g5, Tg8 11) g5xSf6, g5 12) e4, g4 13) e5, Lb7 14) Se2, Db6 15) c5xDb6, c5 16) e5xSd6, c4 17) a4, Tg5 18) h4, Tf5 19) Th3, Lh6 20) Te3, Lg5 21) Te6, Le4 22) Sc3, Lb1 23) Sd5, c3 24) Sg3, c2 25) a5, O-O-O 26) Sc7, Kb7 27) Sa8, Tc8 28) h4xLg5, Tc3 29) b2xTc3, h5 30) Lg2+, Ka6 31) Ld5, h4 32) Ke2, f3+ 33) Kd3, h3 34) Ta4, h2 35) Tf4, h1=T 36) De2, Th8 37) De5, Tc8 38) Se2, Tc4 39) La3, Te4 40) Lc5, b4 41) Le3, Kb5 42) Sd4+, Kc5 43) Sc7, a6 44) Sb5, a6xSb5 (the cage is closed) 45) a6, La2 46) a7, Lb1 47) a8=S, La2 48) Sc7, Lb1 49) Se8, La2 50) Sg7, Lb1 51) Sh5, La2 52) Sg3, Lb1 53) Se2, La2 54) Sc1, Lb1 55) Sa2, b3! 56) Sb4, La2 57) Sc6, Lb1 58) Sd8, La2 59) Sf7, Lb1 60) Sh8, La2 61) Sg6, Lb1 62) Sh4, La2 63) Sg2, Lb1 64) Se1, … c1=S# (2017-12-16)
Yoav Ben-Zvi: A similar concept appears in P0001979. (2017-12-18)
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comment
Keywords: Whose move?, Retro Opposition, Promotion, under-promotion (S)
Genre: Retro
Reprints: Die Schwalbe 120 12/1989
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-12-18 more...
45 - P0001617
Michel Caillaud
487 Europe Echecs 346 10/1987
P0001617
(9+7) cooked
#1 vor 12
VRZ, Typ Proca
Keywords: En passant, Defensive Retractor, Type Proca
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-8-28 more...
46 - P0001638
Michel Caillaud
507 Europe Echecs 364 04/1989
2. ehrende Erwähnung
P0001638
(13+13) C+
BP in 24,5
1. f3 c6 2. Kf2 Db6+ 3. Kg3 Dxg1 4. h4 Dxf1 5. h5 Dxh1 6. h6 Dh5 7. hxg7 Sh6 8. g8=S Lg7 9. a4 Lc3 10. a5 f6 11. a6 Kf7 12. axb7 Kg6 13. Txa7 Sf7 14. Ta1 Ta4 15. Sh6 Sa6 16. b8=T Tf8 17. Tb4 Sh8 18. Th4 Tf7 19. Th1 Th4 20. Sg4 Sb4 21. Sf2 La6 22. Sh3 Ld3 23. Sg1 Kg5 24. Kf2 Lg6 25. Ke1
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Schlag von wSg1 und wTh1 auf ihren Ursprungsfeldern. Anschließend werden die beiden Orginalsteine durch UW-Steine ersetzt.
paul: The last moves are: 14.Ta1 Ta4 15.Sh6 Sa6 16.b8=T Tf8 17.Tb4 Sh8 18.Th4 Tf7 19.Th1 Th4 20. Sg4 Sb4 21. Sf2 La6 22. Sh3 Ld3 23. Sg1 Kg5 24. Kf2 Lg6 25. Ke1
Phoenix-Pronkin theme: wNg1 & wRh1 are promoted, here combined with wK-switchback. (2008-3-24)
comment
Keywords: Unique Proof Game, Pronkin Theme (TS), Switchback (KT)
Genre: Retro
Computer test: Euclide 0.96
Reprints: 43 Shortest Proof Games 11/1991
H16 FIDE Album 1989-1991 1997
feenschach 141 06/2001
Input: Gerd Wilts, 1995-6-3
Last update: Silvio Baier, 2010-6-7 more...
47 - P0001643
Michel Caillaud
512 Europe Echecs 367/368 07/1989
P0001643
(13+13) C+
BP in 8,5
1. Sa3 c5 2. Tb1 c4 3. Sxc4 Dc7 4. Sb6 Dxc2 5. Sxa8 Dxb1 6. Dc2 Dxc2 7. Sb6 Dc4 8. Sxc4 Sa6 9. Sa3
play all play one stop play next play all
Keywords: Unique Proof Game, Symmetrical position
Genre: Retro
Computer test: Natch 2.1 Copyright (C) 1997,98,99,2001,2002 Pascal Wassong
Reprints: 109 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-11-13 more...
48 - P0001668
Michel Caillaud
537 Europe Echecs 376 01/1991
2. Preis
P0001668
(13+12)
r#1
Henrik Juel: 1.Txd7 Kxd7#, not 1.Txb7 0-0-0?. White captured [Lc8], a2xb3xc4, h4xg5; Black captured a2xSb1=L, e3xDf2, c7xLb6, and played f2-f1=T. After the E cage was built, with wLDKL and wPb2,c2,...,g2 at home and wS on h2, the cage was closed by 31.f3. At this point the reflex condition would force 31... Lxg3#, unless sK was already on e4, allowing 31.f3+ Kf5 32.Kf2 etc. (2004-11-26)
comment
Keywords: Cant Castler, Castling (sg)
Genre: Retro
Reprints: feenschach 141 06/2001
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2002-3-24 more...
49 - P0001681
Michel Caillaud
Jacques Rotenberg

550 Europe Echecs 382 07-08/1991
2. ehrende Erwähnung
P0001681
(15+15) C+
KBP?
1) Weiß am Zug
2) Schwarz am Zug
1) 1. Sf3 f5 2. Se5 f4 3. Sxd7 Kf7 4. Se5+ Kf6 5. Sf3 Lg4 6. Sg1 Lxe2 7. f3 De8
2) 1. e4 f5 2. e5 Kf7 3. e6+ Kf6 4. exd7 De8 5. d8=D f4 6. Dd3 Lg4 7. D3e2 Lxe2 8. f3
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Jacques Rotenberg: .
a) Switchback of the knight
b) Switchback of the pawn (2017-11-28)
more ...
comment
Keywords: Unique Proof Game, Switchback (S), Promotion, Rückkehr nach Umwandlung
Genre: Retro
Computer test: Euclide 0.93
Reprints: 8 Shortest Proof Games 11/1991
(11) diagrammes 15 07-09/1994
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-11-28 more...
50 - P0001716
Michel Caillaud
3743 Die Schwalbe 72 12/1981
W. Frangen gewidmet
1. Preis
P0001716
(15+14)
BP in 30,0
1. b4 c5 2. b5 Sc6 3. bxc6 b6 4. c7 Lb7 5. c8=T Lf3 6. gxf3 Tb8 7. Lh3 Tb7 8. Le6 Tc7 9. Sh3 Tc6 10. Tg1 Td6 11. Tg4 Td3 12. Ta4 Td5 13. d4 Sh6 14. Dd2 Sf5 15. Dh6 Td6 16. Lf4 Tc6 17. Sd2 Tc7 18. 0-0-0 Tb7 19. Tg1 Tb8 20. Tg6 hxg6 21. Dh7 Ta8 22. Dg8 Th4 23. Lg3 Te4 24. Lb3 Te6 25. Sf4 Tc6 26. Sh5 Tc7 27. f4 Tb7 28. Tc6 Dc7 29. Te6 Kd8 30. Te3 Kc8
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Renny Bosch: A truly remarkable composition. A simple move count shows Black needs only 17 moves, so he has 13 moves to "waste". How can this possibly be done in a unique way when he has five men to employ? The fact that 13 is an odd number forces the unique 13-move sequence of the black Ra8. Very impressive. (2007-12-22)
comment
Keywords: Unique Proof Game, Castling, Loss of tempo (t13), Promotion (T)
Genre: Retro
Reprints: 986 FIDE Album 1980-1982 1988
61 Shortest Proof Games 11/1991
(3) diagrammes 103 10-12/1992
3383 U.S. Problem Bulletin 102/103 07-10/1995
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-1-9 more...
51 - P0001718
Michel Caillaud
Die Schwalbe 1984
2. Preis
P0001718
(7+9)
shc#36
1. Kc7 2. Kd6 3. Kd5 4. Ke4 5. Kf3 6. Kg3 7. Sf3 8. Td5 9. Sf5 10. S5xd4 11. Sb5 12. Dc5 13. g1=L 14. Le3 15. Lxd2 16. La5 17. d2 18. d1=D 19. Dh1 20. Dxh6 21. Dh3 22. Kh4 23. fxg3ep 24. g2 25. g1=L 26. Lh2 27. Lb8 28. Lac7 29. Kxg5 30. Kf6 31. Ke7 32. Kd8 33. Kc8 34. Td8 35. Dd7 36. Lb7+ cxb7#
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Henrik Juel: What is the solution? (2003-4-14)
gw: 1. Kc7 2. Kd6 3. Kd5 4. Ke4 5. Kf3 6. Kg3 7. Sf3 8. Td5 9. Sf5 10. S5xd4 11. Sb5 12. Dc5 13. g1=L 14. Le3 15. Lxd2 16. La5 17. d2 18. d1=D 19. Dh1 20. Dxh6 21. Dh3 22. Kh4 23. fxg3ep 24. g2 25. g1=L 26. Lh2 27. Lb8 28. Lac7 29. Kxg5 30. Kf6 31. Ke7 32. Kd8 33. Kc8 34. Td8 35. Dd7 36. Lb7+ cxb7# (2003-4-14)
gw: A very nice ser-hc! The solution can be deduced nearly completely by logical reasoning: for the mate c6xb7# two black-squared black Bishops are needed, therefore the ep capture f4xg3 is necessary. In order to justify the ep capture black King must go to h4 and 2 black pieces are needed on f3 and h3 to block wPg4. Therefore only 4 black pieces remain to put wKa6 and wPc6 in retro stalemate which implies that bPd3 must be promoted. For the block of wKa6 and wPc6 I could find only the scheme bBa5, bNb5, bQc5 and another black piece on d5. (2003-4-15)
comment
Keywords: En passant, Consequential Series Mover, Series mover
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-28 more...
52 - P0001744
Michel Caillaud
2853 feenschach 48 10-12/1979
P0001744
(12+10)
In der PAS sind die SS durch Maos ersetzt. Beide Rochaden sind möglich.
a) Wo wurden die LL geschlagen?
b) Wieviele Züge hat der sMao b8 mindestens gemacht?
wSR=Mao
Henrik Juel: The wB's fell on c6 and c1, the bB's on h3 and e7. Orig. Mao b8 made at least 10 moves, incl. a switch-back and a round-trip: b8-d7-b8, then a6, then b4-a2xc1-e2-f4-d5-b4, where it was captured. You may find an analysis on the RetroCorner, http://janko.at/Retros/
FIDE/G671sol.htm (2003-4-10)
Henrik Juel: For those who want to know: A Mao moves like a knight, but only if the orthogonal square is empty. Me7 may move to c8 via d7, or to f5 via e6, but not to g8 because f7 is occupied. With many men on the board, the Mao is a very weak man. (2003-4-11)
paul: 1.a3 d6 2.f3 Bh3 3.gxh3 Qd7 4.Bg2 Qb5 5.Bf1 Qd3 6.exd3 Md7 7.Qe2 Rc8 8.Qe5 Ra8 9.Qf6 exf6 10.Bg2 Be7 11.Me2 Bd8 12.Mf4 Me7 13.Rg1 Md5 14.Bf1 Mb6 15.Md5 Mc4 16.dxc4 Rc8 17.Mb6 Ra8 18.Bd3 Rc8 19.Be4 Rb8 20.Bc6 bxc6 21.Mc8 Rb3 22.Rg5 Rd3 23.Rb5 Rc3 24.Rb6 cxb6 25.bxc3 Mb8 26.Bb2 Ma6 27.Bc1 Bc7 28.Me7 Mb4 29.Mc8 Ma2 30.Me7 Mxc1 31.Mc8 Me2 32.Me7 Mf4 33.Mc8 Md5 34.Me7 Mb4 35.axb4 Bd8 36.Ma3 Bc7 37.Mb5 Bd8 38.Md4 Bc7 39.Me2 Bd8 40.Mc8 Be7 41.Mxe7 c5 42.Mg1 h6. (2010-8-29)
comment
Keywords: Castling (wgsk)
Pieces: sr = Mao (MA)
Genre: Retro, Fairies
Reprints: feenschach 61 08/1982
671 FIDE Album 1977-1979 1984
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2015-5-19 more...
53 - P0001747
Nikita M. Plaksin
Michel Caillaud

3586 feenschach 60 05/1982
3. Preis
P0001747
(15+10)
Ist die Rochade legal?
Die Rochade ist legal, auch mit Weiß am Zug. Schlagfälle weiß: axb, cxd, dxexfxg, schwarz: hxg. R: 1. Kb8-a8 Sf6-g8 2. Kc8-b8 Se4-f6 3. Kd8-c8 Sd2-e4 4. Ke8-d8 Sb1-d2 5. Kf8-e8 Sa3-b1 6. Kg7-f8 Sb1-a3 7. Kh6-g7 Sa3-b1 8. Kg5-h6 Sb1-a3 9. Kh4-g5 Sa3-b1 10. Kh3-h4 Sb1-a3 11. Kg2-h3 Sa3-b1 12. Kf3-g2 Sb1-a3 13. Ke4-f3 Sa3-b1 14. Kd3-e4 Sb1-a3 15. Kc4-d3 Sa3-b1 16. Kb5-c4 Sb1-a3 17. Ka6-b5 Sa3-b1 18. Kb6-a6 Sb1-a3 19. Kb5-b6 Sa3-b1 20. Kc4-b5 Sb1-a3 21. Kd3-c4 Sa3-b1 22. Ke4-d3 Sb1-a3 23. Kf3-e4 Sd2-b1 24. Kg2-f3 Se4-d2 25. Kh3-g2 Sf6-e4 26. Kh4-h3 Sg8-f6 27. Kg5-h4 g7-g8S 28. Kh6-g5 f6xTg7 29. Tg8-g7 e5xDf6 30. Ta8-g8 d4xLe5 31. Dg7-f6 a3xSb4 32. Df8-g7 a2-a3 33. Dd8-f8 c4xTd5 34. Kg7-h6 c3-c4 35. Kf8-g7 c2-c3 36. Ke8-f8 d3-d4 37. Lg7-e5 e2-e3 38. g7-g6
play all play one stop play next play all
Henrik Juel: The final part of the retro play should read: 38.Lf8-g7 h6-h7 39.g7-g6. Or the way I prefer: -1... Kb8 -2.Sf6 Kc8 .. -37.d3 Bg7 -38.e2 Bf8 -39.h6 g7. (2003-4-10)
Renny Bosch: Even with Henrik's correction the retro play as given is wrong. For example, at move -24 the wK goes to f3 while there is a bS at d2. If you use the auto-play buttons some pieces change color!

Also, the sensational bK tour, which is the crown of the composition, is longer than necessary, and the contemporaneous wS tour is clumsier than necessary. Here is a complete game, in forward notation so it can be easily viewed on a freebie tool like WinBoard:

1. Na3 Na6 2. Nc4 Nb4 3. Nb6 h5 4. Nxc8 h4 5. Nb6 Rh5 6. Nc4 Rd5 7. Ne5 Rc5 8. Ng6 Rd5 9. Nh8 Rc5 10. h3 Rd5 11. d3 Rc5 12. Bf4 Rd5 13. Bh2 Rc5 14. Nf3 Rd5 15. Ng5 Rc5 16. Ne4 Rd5 17. Ng3 Rc5 18. Rg1 Rd5 19. Nh1 Rc5 20. g3 Rd5 21. Bg2 Rc5 22. Be4 Rd5 23. Bg6 Nh6 24. Rf1 Ng4 25. Bg1 Nh2 26. g4 Rc5 27. Qd2 Rd5 28. Qe3 Rc5 29. Qg3 hxg3 30. h4 Rd5 31. h5 Rc5 32. h6 Rd5 33. Bh5 g6 34. h7 Bg7 35. e3 Be5 36. a3 Kf8 37. axb4 Kg7 38. c3 Kh6 39. c4 Qf8 40. cxd5 Qg7 41. d4 Qf6 42. dxe5 Rg8 43. exf6 Rg7 44. fxg7 Kg5 45. g8=N Kh4 46. Nh6 Kh3 47. Ng8 Kg2 48. Nh6 Kf3 49. Nf5 Ke4 50. Ng7 Kd3 51. Ne6 Kc4 52. Nd8 Kb5 53. Nc6 Kb6 54. Na5 Ka6 55. Nc6+ Kb5 56. Nd8 Kc4 57. Ne6 Kd3 58. Ng7 Ke4 59. Nf5 Ke5 60. Nh6 Kf6 61. Ng8+ Kg7 62. Nh6 Kf8 63. Ng8 Ke8 64. Nh6 Kd8 65. Ng8 Kc8 66. Nh6 Kb8 67. Ng8 Ka8 68. O-O-O
* (2007-12-25)
Mario Richter: The bK does not need to visit f3,g2 and h3 (just triangulate the other way round on a6,b6,b5) (2008-1-9)
comment
Keywords: Loss of tempo, Promenade (K), Castling (wg), Promotion, Non-standard material
Genre: Retro
Reprints: 973 FIDE Album 1980-1982 1988
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-8-9 more...
54 - P0001748
Michel Caillaud
3188 feenschach 52 10-12/1980
3. Preis
P0001748
(13+15)
#1 (wer?)
Pièces rétro-volages
Keywords: Retro-volages, Whose move?
Genre: Retro
Reprints: 975 FIDE Album 1980-1982 1988
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-9-3 more...
55 - P0001750
Michel Caillaud
Markus Ott

3710 feenschach 63 12/1982
K. Widlert gewidmet
2. Preis
P0001750
(10+15) C+
BP in 24,5
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. Sc3 bxc2 5. Se4 cxd1=S 6. Sg5 Se3 7. Sxh7 Sxf1 8. Sg5 Th5 9. Sh7 Tha5 10. Kd1 e5 11. Kc2 Lb4 12. Kd3 d6 13. Ke4 Sd7 14. Kf5 Sdf6+ 15. Kg5 Kd7 16. Tb1 Se8+ 17. Kg4 Kc6+ 18. Kf3 Kb5 19. Ke4 Ka4 20. Kd3 b5 21. Kc2 Lf5+ 22. Kd1 Lxb1 23. Ke1 f5 24. Sf6 gxf6 25. b3#
play all play one stop play next play all
13-zügiges Tempoverlustmanöver des wK.
more ...
comment
Keywords: Unique Proof Game, Promenade (K), Non-standard material, Loss of tempo (K13), Promotion
Genre: Retro
Computer test: Euclide 0.93
Reprints: 985 FIDE Album 1980-1982 1988
58 Shortest Proof Games 11/1991
3384 U.S. Problem Bulletin 102/103 07-10/1995
Input: Gerd Wilts, 1995-6-3
Last update: Silvio Baier, 2010-3-1 more...
56 - P0001752
Michel Caillaud
3072 feenschach 50 04-06/1980
bernd ellinghoven gewidmet
2. Preis
P0001752
(10+12)
Weiß rochiert im 3. Zug!
schwarzer Schlagzwang
a) Diagramm
b) Sb4 nach h2
a) 1. c4? Sxa2 2. Sf3 0-0-0!! und die w0-0 ist illegal.
1. c3! Sxa2 2. Sf3 Sxc3 3. 0-0
b) 1. Sf3 Sxf3 2. exf3 ~ 3. 0-0
play all play one stop play next play all
Keywords: Castling (wksg), Castling, mutual exclusive
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2013-7-16 more...
57 - P0001769
Michel Caillaud
108 Phénix 2 10/1988
Spezialpreis
P0001769
(15+14) C+
BP in 21,5
1. a4 d5 2. Ta3 Dd6 3. Tf3 Dg3 4. hxg3 f6 5. Th6 f5 6. Tg6 h5 7. d3 h4 8. Kd2 h3 9. Kc3 Th4 10. Kb3 Tc4 11. dxc4 h2 12. Dd4 h1=T 13. Db6 axb6 14. Ld2 Ta5 15. Lb4 Tc5 16. a5 d4 17. a6 d3 18. a7 d2 19. a8=D d1=D 20. Da1 Dd8 21. Sd2 Th8 22. Dd1
play all play one stop play next play all
Keywords: Unique Proof Game, Pronkin Theme (Ddt)
Genre: Retro
Computer test: Resolution time : 52.36 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: feenschach 1986-1988
39 Shortest Proof Games 11/1991
H24 FIDE Album 1986-1988 1995
(H25) Die Schwalbe 156, p. 237, 12/1995
feenschach 137 08-09/2000
H1 The Problemist 07/2010
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2010-9-11 more...
58 - P0001780
Michel Caillaud
599 Phénix 9 03/1990
4. Preis
P0001780
(9+15)
Welches waren die letzten 24 Züge?
R: 1. 0-0+ Kb1-a1 2. e5-e6 Kc2-b1 3. e4-e5 Kd3-c2 4. e3-e4 Ke4-d3 5. a4-a5 Kf5-e4 6. a3-a4 Kg6-f5 7. a2-a3 Sf5-h6 8. h6-h7 Kh7-g6 9. h5-h6 Kg8-h7 10. h4-h5 0-0 11. h3-h4 Lf8-g7 12. h2-h3 g7xTf6
play all play one stop play next play all
Henrik Juel: The final uncapture must in fact be g7xRf6.
The attempt to unpromote bRg4 immediately is just one move too slow: -1.0-0 Sf5 -2.h6 Se3 -3.h5 Sd1 -4.h4 Rc4 -5.h3 Rc1 -6.h2 R=c2 -7.a4 Ka2 -8.e5 Kb3 -9.e4 Kc4 -10.e3 d3xP -11.??. But a shrewd solver won't try this, because of the undetermined move sequence. (2003-3-6)
comment
Keywords: Last Moves? (24), Castling (wksk), Promotion
Genre: Retro
Reprints: feenschach 137 08-09/2000
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-19 more...
59 - P0002187
Michel Caillaud
4495 Die Schwalbe 83 10/1983
1. Preis
P0002187
(16+16)
BP in 38,5
1. b4 Sc6 2. Lb2 Tb8 3. Lf6 Sd4 4. Lh4 f6 5. Sc3 Kf7 6. Db1 Ke6 7. Db3+ Ke5 8. 0-0-0 De8 9. Kb2 Dg6 10. Df7 e6 11. Ka3 Lc5 12. Ka4 b5+ 13. Ka5 Lb7 14. Sh3 Lf3 15. Tg1 Lh5 16. g4 Tb6 17. Tg3 Tc6 18. Td3 Sf3 19. Td6 Ld4 20. Sd5 Tc3 21. Ka6 Tb3 22. Kb7 Tb1 23. Kc8 Ta1 24. Kd8 Sh6+ 25. Ke7 Tb8 26. Tb1 Tb6 27. Tb3 Ta6 28. Tb6 Ta3 29. Tb8 a6 30. Th8 Sf5+ 31. Kf8 Kd6 32. Td3 Kc6 33. Se7+ Kb7 34. Sg8 Lc3 35. Td6 Kc8 36. Tb6 Sd6 37. Tb7 Df5 38. Ta7 Sb7 39. Ta8#
play all play one stop play next play all
Keywords: Unique Proof Game, Length Record, Castling, Capture-free
Genre: Retro
Reprints: 77 Shortest Proof Games 11/1991
574 Europe Echecs 411 03/1993
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2014-5-22 more...
60 - P0002200
Michel Caillaud
1754 Phénix 25-26 05/1994
P0002200
(16+16) C+
KBP
Circe Parrain
b) wSd6 nach b6
a) 1. Sf3 Sc6 2. Sd4 Sxd4 3. Tg1[+wSc4] Sc6 4. Th1 Sb8 5. Sd6+
b) 1. Sh3 d5 2. Sf4 Dd6 3. Sxd5 Dd8[+sBd7] 4. Sb6
play all play one stop play next play all
more ...
comment
Keywords: Circe (Parrain), Unique Proof Game, Switchback
Genre: Retro, Fairies
Computer test: Popeye 4.51
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2014-5-20 more...
61 - P0002204
Michel Caillaud
3509 Problemkiste 94 08/1994
P0002204
(9+16)
BP in 9,5
Andernachschach
1. b4 c5 2. b5 c4 3. b6 c3 4. Sxc3[=sS] Sb1 5. Txb1[=sT] Tb3 6. cxb3[=sB] b2 7. Lxb2[=sL] Lc3 8. dxc3[=sB] c2 9. Dxc2[=sD] Dcc7 10. bxc7[=sB]
play all play one stop play next play all
Keywords: Andernach Chess, Unique Proof Game, Initial Game Array (S), Homebase (2)
Genre: Retro, Fairies
Reprints: (V) Die Schwalbe 151 02/1995
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2013-1-18 more...
62 - P0002237
Andrey Frolkin
Michel Caillaud

3534v feenschach 59 03/1982
1. Lob
P0002237
(15+12) C+
BP in 22,5
1. e4 d5 2. e5 Kd7 3. e6+ Kc6 4. exf7 e5 5. h4 e4 6. h5 e3 7. Th4 e2 8. Ta4 exf1=L 9. Dg4 Lc4 10. d3 d4 11. dxc4 d3 12. Sf3 d2+ 13. Ke2 d1=T 14. Se1 Td6 15. Ld2 Tg6 16. hxg6 h5 17. Lb4 h4 18. Sc3 h3 19. Td1 h2 20. Td7 h1=S 21. Sd1 Sg3+ 22. fxg3 Se7 23. De6#
play all play one stop play next play all
Keywords: Ceriani-Frolkin Theme (lts), Unique Proof Game
Genre: Retro
Computer test: Resolution time : 2.58 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: 10 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-27 more...
63 - P0002238
Michel Caillaud
Rex Multiplex 1983
2. Preis
P0002238
(13+14)
BP in 33,0
1. h4 Sa6 2. h5 Sc5 3. h6 Sa4 4. hxg7 h5 5. f4 Th6 6. f5 Te6 7. f6 Sh6 8. g8=D h4 9. Dg3 h3 10. Dd6 cxd6 11. g4 Da5 12. g5 Df5 13. g6 a5 14. g7 Ta6 15. g8=D Tb6 16. Dg2 Lg7 17. fxg7 f6 18. Dc6 Kf7 19. e4 Kg6 20. e5 Kg5 21. g8=D+ Kf4 22. Dg2 bxc6 23. Dd5 La6 24. Sf3 Le2 25. c4 Sc3 26. Da4 Ld1 27. Le2 cxd5 28. 0-0 h2+ 29. Kg2 h1=S 30. b3 Sf2 31. Lb2 Sfg4 32. d3 Ke3 33. Kh3 Sf2++
play all play one stop play next play all
Renny Bosch: This problem together with P0002241 and P0002243 form a lovely triad in each of which the rightmost three white pawns promote to a common target (Q's, R's, or B's) which subsequently get captured. Studying their similarities and differences, and what it took to make each one work, gives one a good appreciation of the art of SPG composition.

To see them all at once, enter
PROBID='P0002238' OR PROBID='P0002241' OR PROBID='P0002243'
into the search window on the home page. (2008-3-23)
Paulo Roque: obs: 22.D8g2 (2008-12-25)
comment
Keywords: Ceriani-Frolkin Theme (DDD), Unique Proof Game, Non-standard material, Castling, Promotion (s)
Genre: Retro
Reprints: 15 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-1-9 more...
64 - P0002241
Michel Caillaud
3817 feenschach 65 15/05/1983
1. ehrende Erwähnung
P0002241
(13+14)
BP in 34,0
1. f4 a5 2. f5 Ta6 3. f6 Tb6 4. fxg7 f5 5. h4 Sf6 6. g8=T Kf7 7. Tg6 Se8 8. Tc6 dxc6 9. h5 Dd4 10. h6 Dg7 11. hxg7 h5 12. g8=T h4 13. Tg4 h3 14. Ta4 h2 15. e4 Th3 16. La6 Ta3 17. d3 Kg8 18. Lh6 f4 19. Kd2 Lh3 20. g4 Lg2 21. Sh3 Sd7 22. Te1 h1=S 23. g5 Sg3 24. g6 Sf5 25. g7 Kh7 26. g8=T Sfd6 27. Tg5 Sc8 28. Tb5 cxb5 29. b3 bxa4 30. Kc3 Tb5 31. Sd2 Sdb6 32. Tc1 Sa8 33. Kc4 b6 34. c3 Tb4+
play all play one stop play next play all
Renny Bosch: This problem together with P0002238 and P0002243 form a lovely triad in each of which the rightmost three white pawns promote to a common target (Q's, R's, or B's) which subsequently get captured. Studying their similarities and differences, and what it took to make each one work, gives one a good appreciation of the art of SPG composition.

To see them all at once, enter
PROBID='P0002238' OR PROBID='P0002241' OR PROBID='P0002243'
into the search window on the home page.  (2008-3-23)
comment
Keywords: Ceriani-Frolkin Theme (TTT), Unique Proof Game, Non-standard material, Promotion (s)
Genre: Retro
Reprints: 20 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2014-11-6 more...
65 - P0002243
Nikita M. Plaksin
Michel Caillaud

3533v feenschach 59 03/1982
1. ehrende Erwähnung
P0002243
(12+13) C+
BP in 25,5
1. h4 Sa6 2. h5 Sc5 3. h6 Se4 4. hxg7 h5 5. g4 Sh6 6. g8=L Lg7 7. g5 Lf6 8. g6 Lh4 9. g7 f6 10. Lb3 Sg5 11. g8=L Sh3 12. Lgc4 d5 13. a3 dxc4 14. Ta2 Dd3 15. exd3 Ld7 16. Ke2 0-0-0 17. f4 Tdg8 18. f5 Tg6 19. fxg6 cxb3 20. g7 bxa2 21. g8=L a1=T 22. Lc4 Ta2 23. La6 bxa6 24. De1 Kb7 25. Kd1 Lc8 26. Se2
play all play one stop play next play all
Renny Bosch: This problem together with P0002238 and P0002241 form a lovely triad in each of which the rightmost three white pawns promote to a common target (Q's, R's, or B's) which subsequently get captured. Studying their similarities and differences, and what it took to make each one work, gives one a good appreciation of the art of SPG composition.

To see them all at once, enter
PROBID='P0002238' OR PROBID='P0002241' OR PROBID='P0002243'
into the search window on the home page.  (2008-3-23)
comment
Keywords: Ceriani-Frolkin Theme (LLL), Unique Proof Game, Castling, Promotion (t)
Genre: Retro
Computer test: Resolution time : 18 mn 49.40 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: 23 Shortest Proof Games 11/1991
Best Problems 47 07/2008
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2012-6-23 more...
66 - P0002245
Michel Caillaud
RA171 diagrammes 75 01-02/1986
3. ehrende Erwähnung
P0002245
(11+11) C+
BP in 16,0
1. h3 e5 2. h4 Lc5 3. h5 d6 4. h6 Ld7 5. hxg7 La4 6. gxh8=S b5 7. Sxf7 Lb6 8. Sxd8 c5 9. Sc6 Kf7 10. Sxb8 Kg6 11. Sc6 Te8 12. Sd4 exd4 13. Sc3 dxc3 14. a3 cxb2 15. c3 bxa1=T 16. Lb2 Txd1#
play all play one stop play next play all
Silvio Baier: C+ (Euclide 0.93) (2009-5-12)
comment
Keywords: Ceriani-Frolkin Theme (S), Unique Proof Game
Genre: Retro
Computer test: Euclide 0.93
Reprints: 27 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2014-6-29 more...
67 - P0002246
Michel Caillaud
Themes-64 1982
1. Preis
P0002246
(15+11) C+
BP in 26,5
1. a4 c5 2. a5 c4 3. a6 c3 4. axb7 a5 5. Ta4 Sa6 6. Tc4 a4 7. b4 a3 8. Lb2 a2 9. Sa3 a1=S 10. Sb5 Sb3 11. cxb3 c2 12. Le5 c1=S 13. Lb8 Sd3+ 14. exd3 e5 15. Dg4 e4 16. Ke2 e3 17. Kf3 e2 18. Ke4 exf1=S 19. Sf3 Sg3+ 20. hxg3 h5 21. Te1 h4 22. Te2 h3 23. Se1 h2 24. Dh3 h1=S 25. g4 Sg3+ 26. fxg3 Se7 27. Sd6#
play all play one stop play next play all
Henrik Juel: Diagram error: the unit on e1 should be a white knight. Beautiful early proof game, by the way. (2003-4-10)
more ...
comment
Keywords: Ceriani-Frolkin Theme (ssss), Unique Proof Game
Genre: Retro
Computer test: Resolution time : 9.34 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: 28 Shortest Proof Games 11/1991
(4) Quartz 18 10-12/2002
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2009-3-14 more...
68 - P0002247
Michel Caillaud
Mat (Belgrad) 1982
2. ehrende Erwähnung
P0002247
(13+15) C+
BP in 27,0
1. b4 Sc6 2. b5 Se5 3. b6 c6 4. bxa7 Db6 5. Sc3 Db1 6. a4 b5 7. a5 Lb7 8. a6 0-0-0 9. a8=S Sh6 10. Sc7 Sf5 11. Se6 h6 12. Sg5 hxg5 13. a7 Th3 14. a8=S Td3 15. Sc7 La8 16. Se8 Kb7 17. Sd6+ exd6 18. h4 Le7 19. h5 Tf8 20. h6 Ld8 21. h7 Lc7 22. h8=S Lb8 23. Sg6 fxg6 24. Th4 Tf6 25. Td4 Sh4 26. e4 Sef3+ 27. Ke2 Te3+
play all play one stop play next play all
Keywords: Ceriani-Frolkin Theme (SSS), Unique Proof Game, Castling
Genre: Retro
Computer test: Resolution time : 4 h 17 mn 54.29 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: 29 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-1-9 more...
69 - P0002271
Michel Caillaud
The Problemist 1983
1. Preis
P0002271
(16+14)
BP in 22,5
1. h4 a5 2. h5 Ta6 3. Th4 Tb6 4. Sh3 Tb3 5. cxb3 h6 6. Dc2 Th7 7. Dxh7 Sc6 8. d3 Se5 9. Le3 Sg6 10. Sd2 Sh8 11. Tc1 g6 12. Tc5 Lg7 13. Te5 Lf6 14. Lc5 Lg5 15. e3 Lf4 16. Le2 Lg3 17. Lg4 Lh2 18. f3 Lf4 19. Kf2 Lg5 20. Kg3 Lf6 21. Sf2 Lg7 22. Lh3 Lf8 23. Tg4
play all play one stop play next play all
Keywords: Unique Proof Game, Loss of tempo (l11)
Genre: Retro
Reprints: 62 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-27 more...
70 - P0002282
Michel Caillaud
994 Phénix 14 09/1991
5. ehrende Erwähnung
P0002282
(14+13) C+
BP in 17,5
1. d4 e6 2. Ld2 Ld6 3. Lb4 Lg3 4. hxg3 Se7 5. Th6 0-0 6. Txe6 Sg6 7. Te8 Dg5 8. Txc8 f6 9. Te8 Kf7 10. Te6 Th8 11. Tb6 axb6 12. f4 Ta3 13. Kd2 Tf3 14. a4 Txf1 15. Sa3 Tf3 16. Df1 Ke8 17. Td1 Td3+ 18. Kc1
play all play one stop play next play all
Keywords: Unique Proof Game, Castling (wgsk), Castling Paradox (wd fake sk hidden)
Genre: Retro
Computer test: Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: 91 Shortest Proof Games 11/1991
(7) feenschach 121 11/1996
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2013-5-1 more...
71 - P0002297
Michel Caillaud
3949 feenschach 67 11/1983
Hans Gruber gewidmet
P0002297
(14+14)
BP in 33,5
1. a3 b5 2. Ta2 b4 3. axb4 Sc6 4. Ta6 Sd4 5. Tc6 dxc6 6. Sf3 Lh3 7. gxh3 h5 8. Lg2 Th6 9. 0-0 Te6 10. Lh1 Te3 11. Kg2 e6 12. Kg3 Lc5 13. Kf4 Dd6+ 14. Kg5 f6+ 15. Kg6 a5 16. Kh7 Kf7 17. Kh8 Kg6 18. Se5+ Kg5 19. Sd7 g6 20. Kg7 La7 21. Kf7 Lb8 22. Ke8 a4 23. Kd8 a3 24. Kc8 Se7+ 25. Kb7 Sc8 26. Se5 Sa7 27. Ka6 a2 28. Ka5 a1=S 29. Ka4 Sab3 30. Ka3 Kh4 31. Ka2 Sxc1+ 32. Ka1 Sa2 33. Sf7 Sc3 34. Sh8
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more ...
comment
Keywords: Unique Proof Game, Promenade (K), Non-standard material, Castling
Genre: Retro
Reprints: 115 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2014-11-6 more...
72 - P0002311
Michel Caillaud
Thema Danicum 1984
1. ehrende Erwähnung
P0002311
(15+12) C+
BP in 16,5
1. Sc3 b6 2. Sd5 La6 3. Sb4 Ld3 4. exd3 Sc6 5. Le2 Tb8 6. Lg4 Tb7 7. Le6 dxe6 8. Dg4 Dd5 9. Se2 Db3 10. axb3 Kd7 11. Txa7 Kd6 12. Ta8 Ta7 13. Txf8 Ta8 14. Tb8 Sa7 15. Tb7 Tf8 16. 0-0 Sc8 17. Dd4#
play all play one stop play next play all
Henrik Juel: Note the capture-free round-trip bRa8-b8-b7-a7-a8 needed to make room for orig. wRa1. The problem is C+. (2003-4-14)
comment
Keywords: Unique Proof Game, Castling (wk)
Genre: Retro
Computer test: Resolution time : 3.24 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: diagrammes 85 04-06/1988
142 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-27 more...
73 - P0002324
Michel Caillaud
The Problemist 1982
P0002324
(9+16)
Play the shortest game stalemating king and 8 pawns of one side!
1. c4 a5 2. Da4 e5 3. Dc6 dxc6 4. e4 Lb4 5. Ld3 Dxd3 6. Sh3 Lxh3 7. a4 Dxb1 8. b3 Dxa1 9. c5 Dxc1+ 10. Ke2 Dxh1 11. g4 Df3+ 12. Ke1 g5
play all play one stop play next play all
Keywords: Non-Unique Proof Game, Construction task
Genre: Retro
Reprints: 165 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2012-4-10 more...
74 - P0002337
Michel Caillaud
4019 Die Schwalbe 76 08/1982
Dr. Karl Fabel zum Gedenken
1. Preis
P0002337
(11+15)
BP in 47,0
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. a3 Ta4 5. Ta2 bxa2 6. Tg1 axb1=S 7. Th1 Sc3 8. Tg1 Sd5 9. Th1 Sb6 10. Tg1 Sa8 11. Th1 b6 12. Tg1 La6 13. Th1 Dc8 14. Tg1 Db7 15. Th1 Df3 16. gxf3 h5 17. Lh3 h4 18. Le6 h3 19. La2 Lc4 20. Lb1 La2 21. b3 Thh4 22. Lb2 Thb4 23. Lf6 gxf6 24. Kf1 Lh6 25. Kg1 Kf8 26. Df1 Kg7 27. Dg2+ hxg2 28. h4 Kg6 29. Kh2 g1=S 30. Kg2 Lf4 31. h5+ Kg5 32. Th4 Lh2 33. Td4 Sh3 34. f4+ Kh4 35. Kf3 Sg5+ 36. Ke3 Kh3 37. h6 Kg2 38. h7 Kf1 39. h8=T Ke1 40. Th5 Sh7 41. Ta5 Kd1 42. Ta7 Kc1 43. Tb7 Ta7 44. Kd3 Sa6 45. Tb8 Kb2 46. Tf8 Ka1 47. Kc3 Lg1
play all play one stop play next play all
Keywords: Unique Proof Game, Length Record, Non-standard material, Promotion (ssT)
Genre: Retro
Reprints: diagrammes 69 01-02/1985
989 FIDE Album 1980-1982 1988
81 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2006-1-10 more...
75 - P0002353
Theodor Tauber
Michel Caillaud

The Problemist 1991
P0002353
(14+11)
ser-h#3 (AP)
Henrik Juel: If Black may castle, his latest move must have been e3xf2, so last move was e2-e4. (Orig. wPg2 promoted on g8, so g7xh6 happened early). 1.dxe3 e.p. 2.fxg1=B 3.0-0 Tg4# (2003-3-21)
comment
Keywords: a posteriori (AP), En passant, Castling (sk), Series mover, Promotion, Valladao Task
Genre: Retro
Reprints: Die Schwalbe 143 10/1993
Rex Multiplex 45-46 05/1994
(XII) Quartz 5 1997
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-8-6 more...
76 - P0002465
Michel Caillaud
(7) Problem 206-210 07/1981
2. ehrende Erwähnung
P0002465
(13+10)
#1 (wer?)
Henrik Juel: Solution: 1.. Bxf3#, not 1.Rg8?, because Black has the move, as seen from the retroplay: -1.Sb3 Sc6 -2.Sc5 Sb4 -3.Sa6 Sc2 -4.Sb8 Sa1 -5.S=b7 -6.b6 -7.b5 -8.b4 Sa1 -9.b3 S=a2 -10.Bg2 a3 -11.Bh2 b4xR -12.Ra1 b5 -13.Rg1 a6 -14.Bf1 a7 -15.g2 g3xQ -16.Qe1 g4 -17.Kg3 g5. Now bRh6 is retracted to g8, where it helps to extract wRf7,g7, one of which unpromotes on b8 and uncaptures bB on b6.
The stipulation might be more clearly enunciated as '#1 (who?)'. (2003-3-6)
more ...
comment
Keywords: Whose move?
Genre: Retro
Reprints: (6) Die Schwalbe 103 02/1987
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2010-6-4 more...
77 - P0002754
Michel Caillaud
Jacques Dupin

896 Phénix 13 06/1991
P0002754
(5+1) C+
sdc#5
Circe Parrain
1. h8=L 2. La1 (R: 1. Kb2xLb1 Lc2-b1[+wLa1] 2. Ka3xLb2) 3. d4[+wLb3] 4. Kd2[+wLb2] 5. Lc2#
Der wBe2 darf nicht 3. e4? ziehen, da der wLa1 sonst auch mit Ke2-d1 anstatt Lc2-b1 auf a1 wiedererstehen kann. 4. d5? scheitert an Retropatt.
play all play one stop play next play all
t/2KK4BB
comment
Keywords: Circe (Parrain), Consequential Series Mover, Series mover, Kindergarten Problem
Genre: Retro, Fairies
Computer test: %Popeye C-Version 3.52
Reprints: R40 Problemkiste (184 08/2009
Input: Gerd Wilts, 1995-6-3
Last update: Erich Bartel, 2014-10-14 more...
78 - P0003897
Michel Caillaud
diagrammes 41 09-10/1979
G. Yacoubian gewidmet
P0003897
(5+10)
shc#15
1. Tf8 2. Tf2 3. Txg2 4. Tf2 5. Tf8 6. Ta8 7. Ta3 8. Txb3 9. Tb5 10. Lb4 11. Kd6 12. Kc5 13. Kc4 14. Tc5 15. b5 b3#
play all play one stop play next play all
Keywords: Consequential Series Mover, Series mover
Genre: Retro
Reprints: (I) Quartz 4 1997
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-28 more...
79 - P0003900
Michel Caillaud
diagrammes 41 09-10/1979
P0003900
(6+7)
shc#6
1. d4 2. d3 3. dxe2 4. 0-0 5. Kh8 6. Tg8 Sf7#
play all play one stop play next play all
Keywords: Consequential Series Mover, Castling (sk), Series mover
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-28 more...
80 - P0003901
Michel Caillaud
diagrammes 41 09-10/1979
P0003901
(4+9)
shc#6
1. Df2 2. Db6 3. Kd4 4. bxc3ep 5. Dg6 6. De4 Lb6
play all play one stop play next play all
Keywords: Consequential Series Mover, Series mover
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-28 more...
81 - P0003902
Garen Yacoubian
Michel Caillaud

diagrammes 41 09-10/1979
P0003902
(5+9)
shc#17
1. Sa7 2. Tb7 3. La5 4. Td2 5. Kf2 6. Dd1 7. Dh5 8. Kf3 9. Kg4 10. exf3ep 11. f2 12. Kf3 13. Ke2 14. Ke1 15. Dd1 16. e2 17. f1=L Lxg3#
play all play one stop play next play all
Keywords: En passant, Consequential Series Mover
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-28 more...
82 - P0003904
Michel Caillaud
diagrammes 41 09-10/1979
P0003904
(5+3)
#2
b) nach dem Schlüssel
a) 1. Th1 e2 2. Sf2#
b) 1. 0-0 e2 2. Sf2#
play all play one stop play next play all
Keywords: Castling
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2014-7-3 more...
83 - P0003910
Michel Caillaud
RA118 diagrammes 41 09-10/1979
"Passage réservé"
T. R. Dawson zum Gedenken
1. Preis
P0003910
(14+15)
h#1
Henrik Juel: Solution: 1.exd3 e.p. Qg4#. The only way to release the position is -1.d2 d7 -2.Rb6 a3 -3.Rb3 a4 -4.Rh3 a5 -5.Rh1/Rh2 a6 -6.h2/h3 Kh4 etc. (2003-3-25)
comment
Keywords: En passant as key
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2008-9-14 more...
84 - P0003913
Michel Caillaud
RA121 diagrammes 45 05-06/1980
P0003913
(5+2)
r#2
1. bxa6ep Ka5 2. Ta1#
play all play one stop play next play all
Ion Murarasu: Correct stipulation: direct reflex for Black ,#2
Solution : 1.bxa6 e.p. ! Ka5 2.Ra1#. (2003-11-26)
paul: If Blacks last move was a6-a5, then Black would have had Pa6xb5 Ra3# (2014-10-18)
comment
Keywords: En passant as key
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-12-3 more...
85 - P0003924
Michel Caillaud
RA133 diagrammes 47 09-10/1980
P0003924
(5+11)
#1
a) Diagramm
b) vertikal gespiegelt
a) 1. ... g6#
b) 1. Txg8#
play all play one stop play next play all
Henrik Juel: Starting the retroplay by e7xd6 implies that sD was captured by a wP so that Tc8 could be promoted on g8. Getting the sD back is possible only if the opening is on the queen-side, which is the case in part b), not in part a). (2004-11-26)
comment
Keywords: Twin by board reflection
Genre: Retro
Reprints: R11 ASymmetrie 2013
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2013-7-5 more...
86 - P0003930
Michel Caillaud
diagrammes 51 05-06/1981
1. Preis
P0003930
(10+9)
#2
Pièces rétro-volages
1. 0-0
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TT
VL: Black is in stalemate. However, as a subtle analysis shows,
after 1.0-0!, his Sb1, Rb4 and Rb5 cannot be all volage
(whereas any two can). So, B has now a move by the corresponding
orthodox piece, and W mates: 1... Sxa3/d2(=bS) 2.Qxc3#,
1.Ra4/Rc5(=bR) 2.Se5#. Subordination (post factum) logic.
(Tries: 1.bxc3? b2=wP, 1.Qd2? Sxe2). (2008-6-18)
comment
Keywords: Retro-volages, Castling
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1997-3-20 more...
87 - P0003933
Michel Caillaud
diagrammes 51 05-06/1981
2. ehrende Erwähnung
P0003933
(8+8)
#2
Pièces rétro-volages
1. Da8 2. Ta4
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TT
VL: In this position, Q and R cannot be both volage (but one
of them is). Thus, 1.Qa8=bQ makes R orthodox: 2.Ra4=wR#!
Subordination (post factum) logic. (2008-6-17)
comment
Keywords: Retro-volages
Genre: Retro
Input: Gerd Wilts, 1995-6-3
88 - P0003944
Michel Caillaud
RA143 diagrammes 53 09-10/1981
P0003944
(11+10)
#1
Henrik Juel: Solution: 1.Kf2#, not 1.0-0-0??.
Only one out of orig. wRh1 and bRh8 could reach the Queen's side before the barrier b7-c8-d7-e6-f5-f4-e3-d2-e1 was formed. The other used the first rank, so wK has moved. A different barrier with a similar argument was shown by Niels Høeg in his New Year's greeting 1939 (PDB Probid P0008827). (2003-3-31)
comment
Keywords: Castling (wg)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
89 - P0003952
Michel Caillaud
RA146 diagrammes 60 01-02/1983
3. ehrende Erwähnung
P0003952
(15+9)
#2 (RV)
Henrik Juel: Solution: White pawns may have captured axbxc, exdxc, and hxgxh, so it is possible that orig. bPa7 didn't promote on a1, allowing castling. 1.0-0-0 2.dRf1#. But if a bP has just made a double step, the promotion on a1 must have occurred. -1... b7, 1.cxb6 ep (2.Qxd3#) e4 2.Sd4#. -1... e7, 1.fxe6 ep 2.Sd4#. -1... h7, 1.gxh6 ep 2.Bg4#.
But after -1... c4xBd3! (forcing White to have promoted on g8) I see no mate in 2, so the problem seems unsolvable; did I overlook something? (2003-4-11)
Gerd Wilts: I think you are right, the problem seems to be cooked. By the way, I tried for a long time to realise the same idea in a #1 (see P0001679 and P0001687), but I could not find a scheme which uses only the standard set of chess men). Can anyone compose such a problem? (2003-4-11)
Gerd Wilts: Well, after reconsideration I am not sure anymore if the problem should be considered cooked. In a problem with retro-variations obviously not all of the games leading to the diagram position are considered. For example, the trivial retro play R: 1. ... Tb1-a1 is obviously not considered because it "trivially" shows that castling is not allowed. Problems with mutually exclusive castlings are another kind of RV problems where not all of the possible games are considered. Perhaps the retro move R: 1. c4xBd3 is simply not considered in this problem!? (2003-4-11)
Gerd Wilts: I reread an article by Werner Frangen from Die Schwalbe, April 1984, which explains the issue in detail. Several different definitions of RV problems have been proposed in the course of time, for example one by Gerd Rinder in 1970 and another by Werner Frangen in 1984, amongst others. Werner Frangen proposed the following convention: 1) First all possible last double steps of pawns are considered (provided there is an opposing pawn which can capture it!), then the case where no pawn has made a double step is considered. 2) For all those cases the maximum number of possible castlings is determined. Under this convention the problem is not cooked. (2003-4-14)
comment
Keywords: Partial Retro Analysis (PRA), Castling (wg), En passant as key
Genre: Retro
Input: Gerd Wilts, 1995-6-3
90 - P0003961
Michel Caillaud
The Problemist 1983
spezielle ehrende Erwähnung
P0003961
(14+12)
#2
Henrik Juel: Solution: White pawns captured a2xPb3xc4, exd, and hxg; Black captured d7xBe7 and f7xPg6, and promoted on a1. h7-h5 or h6-h5 is impossible as last move, since orig. bRh8 could then not have left its corner. So last move was c7-c5. 1.dxc6 ep Bxd7/Rxe5+/Rxf4/Qxg8 2.Dxf7/Sd5/Rxf4/dxe8S #. Changes from the set play 1... Bxd7+/Rxe5 2.Sxd7/Sxh5 #. A rare Caillaud retro with relatively little retro content. (2003-4-11)
comment
Keywords: En passant as key
Genre: Retro
Reprints: (3) diagrammes 70 03-04/1985
(81) Mat Plus 12 10-12/2009
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2010-6-16 more...
91 - P0003967
Michel Caillaud
RA160 diagrammes 73 09-10/1985
5. ehrende Erwähnung
P0003967
(2+3)
#1
Mars-Circe
Henrik Juel: Solution: 1... b1Q#, because Black has the move. In Mars Circe captures are made as if the capturing man came from his resurrection square, which must be empty. Retracting bK exposes him to check from wK, so this can happen only when White is ready to retract a man to e1; analogously for retracting wK. wPb7 captured on b3 (or bPb2 captured on b6), so -1... b3 -2.b6 is illegal. Possible retroplay: -1.b6 Bc6 -2.Ke7 Be8 -3.Kd6 Bd7 etc. (2003-4-22)
comment
Keywords: Circe (Mars)
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2019-2-3 more...
92 - P0003974
Michel Caillaud
RA167 diagrammes 74 11-12/1985
1. Preis
P0003974
(5+14)
#1 vor 6
VRZ, Typ Hoeg.
Henrik Juel: Solution:
-1.Kb1:0 b3:B (Black may not supplement anything: the missing bB is lightsquared, and supplementing the bQ would entail an illegal double check. The reason for White choosing to supplement a wB is divulged only at the end). -2.Kc2 c4:B -3.Kd3 d5:B -4.Ke4 e6:B -5.Kf5 f7:B -6.Rh1:0, 1.hxg6 e.p.#!
Original wPb2,d2 captured to get to a file with a light promotion square. The queenside black pawn captures (incl. axb6 and bxa7) happened early to allow 5 wB promotions. So last move must have been g7-g5, legitimizing the en passant capture mate. Amazing problem. (2003-2-27)
HJ correction: The missing bB is darksquared, of course. (2003-2-27)
comment
Keywords: Defensive Retractor, Defensive Retractor, Type Høeg
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2010-6-4 more...
93 - P0003980
Michel Caillaud
The Problemist 1984
2. Preis
P0003980
(7+8)
shc#29
1. Lc8 2. Lf5 3. Lb1 4. h1=D 5. Dxh4 6. De4 7. h4 8. h3 9. h2 10. h1=S 11. Sxf2 12. Sd3 13. f2 14. f1=L 15. Lh3 16. Ld7 17. La4 18. b5 19. Kb6 20. Kc5 21. Kd4 22. bxc3ep 23. Kc5 24. Db4 25. Da5 26. Kb4 27. Sc5 28. Ld3 29. Lc4 dxc3#
play all play one stop play next play all
Henrik Juel: Solution: 1.Bc8-f5-b1 4.h1Qxh4-e4 7.h4-h3-h2-h1Sxf2-d3 13.f2-f1B-h3-d7-a4 18.b5 19.Kb6-c5-d4 22.bxc3 e.p. 23.Kc5 24.Qb4-a5 26.Kb4 27.Sc5 28.Bd3-c4 dxc3#. The try 1.Bxd5-e4-b1 etc. as above fails because the positions after the en passant capture are illegal with Black to move. (2003-3-24)
comment
Keywords: En passant, Consequential Series Mover, Series mover, Promotion (dls)
Genre: Retro
Reprints: (11) diagrammes 75 01-02/1986
(VI) Quartz 4 1997
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2005-11-28 more...
94 - P0003985
Michel Caillaud
RA179 diagrammes 76 03-04/1986
3. Preis
P0003985
(12+10)
Kann Weiß #1?
Henrik Juel: 1.Bf2# seems illegal, because the tempo is wrong after -1... Qa2 -2.Kc1 Sc6 -3.Kd1 Se5 -4.Kc1 Sg4 -5.Kd1, where -5... Sf2?? (intending -6... Sh1) is illegal, and neither wK nor bS can correct the tempo; but bQ can! -5... Sh2 -6.Kc1 Sf1 -7.Kd1 Sd2 -8.Kc1 Sb1 -9.Kd1 Qb2 -10.Kc1 Qa1 -11.Kd1 Qa2 -12.Kc1 Sd2 -13.Kd1 Sf1 -14.Kc1 Sh2 -15.Kd1 Sg4 -16.Kc1 Sf2 -17.Kd1 Sh1 -18.Kc1 S=h2 -18.Kd1 h3 -19.h2xP etc. So the solution is: Yes, White can mate. bBa4 is orig. bPf7 promoted on f1. (2003-4-22)
comment
Keywords: Non-standard material, Whose move?
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 2004-8-9 more...
95 - P0004002
Michel Caillaud
RA197 diagrammes 80 01-03/1987
P0004002
(15+9)
#1
1. axb6ep#
R: 1. b7-b5 Kd3-e3+ 2. Se2-c1+ Se1-f3+ 3. Sf3-g1+ Lg1-a7+
play all play one stop play next play all
Keywords: En passant as key, Consecutive checks
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Gerd Wilts, 1996-6-26 more...
96 - P0004016
Michel Caillaud
RA217 diagrammes 83 10-12/1987
P0004016
(2+16)
h#6,5 (AP)
Henrik Juel: Solution: 1... gxh6 e.p. 2.f6 h7 3.Qg8+ hxg8=Q+ 4.Sf8 Qe6 5.Sh7 Qxf5 6.Bh6+ Kxh6 7.0-0 Qxh7#. Castling is necessary to legitimize the en passant capture, as is made evident by the AP label. Still not easy to solve for me. (2003-3-24)
comment
Keywords: a posteriori (AP), Minimal, Valladao Task
Genre: h#, Retro
Reprints: (18) diagrammes 112 01-03/1995
416 Minimalkunst im Schach 2006
Input: Gerd Wilts, 1995-6-3
Last update: Erich Bartel, 2014-9-29 more...
97 - P0004024
Michel Caillaud
The Problemist 1985
1. Preis
P0004024
(8+8)
shc#28
Keywords: Consequential Series Mover, En passant, Promotion in forward play, Series mover, Kindergarten Problem
Genre: Retro
Reprints: diagrammes 84 01-03/1988
ep6 Problemkiste (112) 08/1997
Input: Gerd Wilts, 1995-6-3
Last update: Erich Bartel, 2016-4-9 more...
98 - P0004030
Michel Caillaud
diagrammes 85bis 04-06/1988
1. ehrende Erwähnung
P0004030
(13+10)
r#1 (wer?)
8. TT
comment

Genre: Retro
Input: Gerd Wilts, 1995-6-3
99 - P0004052
Michel Caillaud
S1047 The Problemist 09/1985
Spezialpreis (Richter: H. Laue)
P0004052
(13+12) cooked
s#17
1. Tf1? T6a7 2. Dg7 0-0-0!
1. 0-0 T6a7 2. Kh2 Ta6 3. Th1 T6a7 4. Kg1 Ta6 5. Kf1 T6a7 6. Ke1 Ta6 7. Tf1 T6a7 8. Dg7 Kd8 9. Dxg8+ Ke7 10. Th7+ Kf6 11. Dg7+ Kxf5 12. Th5+ Ke4 13. d3+ Kxd3 14. Da1 Tb8 15. Dd1+ Ke4 16. Sc3+ bxc3 17. Db1+ c2#
Rochadevermeidung
play all play one stop play next play all
Cook: Nebenlösung in 16 Zügen:
1. Dg6+ Ke7 2. Dg7+ Kd8,Ke8 3. Dxg8+ Ke7 4. T1h7+ Kf6 5. Tf7+ Ke5 6. Dxa8 Ta7 7. Dxa7 Ke4 8. Th1 Kd3,Ke5 9. e4 Kxe4 10. d4 Kd3 11. Db8 Ke4 12. Kd2 cxd4 13. Dxd6 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
11. ... cxd4 12. Dxd6 Ke4 13. Kd2 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
10. ... cxd4 11. Db8 Ke5 12. Dxd6+ Ke4 13. Kd2 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
11. ... d3 12. Dxd6 d2+ 13. Kd1 Kd3 14. De7 d6 15. De2+ fxe2#
6. ... Txa8 7. Txa8 Ke4 8. Th8 Kd3,Ke5 9. e4 Kxe4 10. d4 Kd3 11. Th5 Ke4 12. Kd2 cxd4 13. f6 d3 14. Kd1 d2 15. Te7+ Kd3 16. Te2 fxe2#
11. ... cxd4 12. f6 Ke4 13. Kd2 d3 14. Kd1 d2 15. Te7+ Kd3 16. Te2 fxe2#
10. ... cxd4 11. Th5 d3 12. f6 d2+ 13. Kd1 Kd3 14. Tfh7 Ke4 15. Te7+ Kd3 16. Te2 fxe2#
11. ... Ke5 12. f6+ Ke4 13. Kd2 d3 14. Kd1 d2 15. Te7+ Kd3 16. Te2 fxe2#
6. ... Ke4 7. Dxa6 Kd3,Ke5 8. e4 Kxe4 9. d4 Kd3 10. Th5 Ke4 11. Kd2 cxd4 12. f6 d3 13. Kd1 d2 14. Te7+ Kd3 15. Te2 fxe2#
10. ... cxd4 11. f6 Ke4 12. Kd2 d3 13. Kd1 d2 14. Te7+ Kd3 15. Te2 fxe2#
9. ... cxd4 10. Th5 d3 11. f6 d2+ 12. Kd1 Kd3 13. Tfh7 Ke4 14. Te7+ Kd3 15. Te2 fxe2#
10. ... Ke5 11. f6+ Ke4 12. Kd2 d3 13. Kd1 d2 14. Te7+ Kd3 15. Te2 fxe2#
2. ... Lf7 3. Txa8 Txa8 4. Dg5+ Ke8 5. Th8+ Lg8 6. Dxg8+ Ke7 7. Dh7+ Kf6 8. Txa8 Ke5 9. Tf8 Ke4 10. d4 Kd3 11. e4 Kxe4 12. Kd2 cxd4 13. Dg7 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
11. ... cxd4 12. Dg7 Kxe4 13. Kd2 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
10. ... cxd4 11. f6+ Ke5 12. e4 d3 13. Dh5+ Kxe4 14. Kd1 d2 15. Te8+ Kd3 16. Te2 fxe2#
8. ... Kg5 9. Dh8 Kxf5 10. Tg8 Ke4 11. Tg5 Kd3 12. Dh1 Ke4 13. d3+ Kxd3 14. Df1+ Ke4 15. Ld1 b3+ 16. Sc3+ Lxc3#
4. ... Kf8 5. Th8+ Lg8 6. Dxg8+ Ke7 7. Dh7+ Kf6 8. Txa8 Ke5 9. Tf8 Ke4 10. d4 Kd3 11. e4 Kxe4 12. Kd2 cxd4 13. Dg7 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
11. ... cxd4 12. Dg7 Kxe4 13. Kd2 d3 14. Kd1 d2 15. De7+ Kd3 16. De2+ fxe2#
10. ... cxd4 11. f6+ Ke5 12. e4 d3 13. Dh5+ Kxe4 14. Kd1 d2 15. Te8+ Kd3 16. Te2 fxe2#
8. ... Kg5 9. Dh8 Kxf5 10. Tg8 Ke4 11. Tg5 Kd3 12. Dh1 Ke4 13. d3+ Kxd3 14. Df1+ Ke4 15. Ld1 b3+ 16. Sc3+ Lxc3#
3. ... Ta7 4. Txa7 Kd8,Ke8 5. Ta8+ Ke7 6. d4 cxd4 7. e4 d3 8. Kd1 d2 9. Df8+ Kf6 10. Th5 Ke5 11. Dxf7 Kxe4 12. De7+ Kd3 13. De2+ fxe2#
1. ... Kd8 2. Dxg8+ Ke7 3. T1h7+ Kf6 4. Tf7+ Ke5 5. Dxa8 Ta7 6. Dxa7 Ke4 7. Ta8 Kd3,Ke5 8. Db8 Ke4 9. Dh8 Kd3 10. Db2 Ke4 11. d4 Kd3,cxd4 12. Te8 cxd4,Kd3 13. Kd1 dxe3 14. Dd2+ exd2 15. Te2 fxe2#
5. ... Txa8 6. Txa8 Ke4 7. Th8 Kd3,Kd5 8. e4 Kxe4 9. d4 Kd3 10. Th5 Ke4 11. Kd2 cxd4 12. f6 d3 13. Kd1 d2 14. Te7+ Kd3 15. Te2 fxe2#
10. ... cxd4 11. f6 Ke4 12. Kd2 d3 13. Kd1 d2 14. Te7+ Kd3 15. Te2 fxe2#
9. ... cxd4 10. Th5 d3 11. f6 d2+ 12. Kd1 Kd3 13. Tfh7 Ke4 14. Te7+ Kd3 15. Te2 fxe2#
10. ... Ke5 11. f6+ Ke4 12. Kd2 d3 13. Kd1 d2 14. Te7+ Kd3 15. Te2 fxe2#
5. ... Ke4 6. Dxa6 Kd3,Ke5 7. e4 Kxe4 8. d4 Kd3 9. Th5 Ke4 10. Kd2 cxd4 11. f6 d3 12. Kd1 d2 13. Te7+ Kd3 14. Te2 fxe2#
9. ... cxd4 10. f6 Ke4 11. Kd2 d3 12. Kd1 d2 13. Te7+ Kd3 14. Te2 fxe2#
8. ... cxd4 9. Th5 d3 10. f6 d2+ 11. Kd1 Kd3 12. Tfh7 Ke4 13. Te7+ Kd3 14. Te2 fxe2#
9. ... Ke5 10. f6+ Ke4 11. Kd2 d3 12. Kd1 d2 13. Te7+ Kd3 14. Te2 fxe2#
1. ... Kf8 2. Dxg8+ Ke7 und weiter wie oben mit Matt im 15. Zug

Die Nebenlösung wurde gefunden von Bert Sendobry
Keywords: Cant Castler, Castling
Genre: Retro, s#
Reprints: diagrammes 86 07-09/1988
Input: Gerd Wilts, 1995-6-3
Last update: Olaf Jenkner, 2015-4-19 more...
100 - P0004254
Michel Caillaud
593 Europe Echecs 427 10/1994
A. Frolkin und G. Wilts gewidmet
P0004254
(12+11) C+
BP in 32,5
1. h4 e5 2. h5 e4 3. h6 e3 4. hxg7 h5 5. g4 h4 6. g5 h3 7. g6 h2 8. Sh3 Sh6 9. Tg1 h1=D 10. g8=S Dc6 11. Se7 Dc3 12. Sc6 dxc6 13. g7 Lg4 14. g8=D f5 15. Db3 D8d3 16. Db6 axb6 17. dxc3 Ta4 18. Sd2 Da6 19. Sf3 exf2+ 20. Kd2 Sf7 21. e4 Sd8 22. Le2 f1=T 23. Se1 Tf4 24. e5 Tfb4 25. e6 f4 26. e7 Kf7 27. e8=T f3 28. Te5 f2 29. Tb5 f1=S+ 30. Kd3 Sd2 31. cxb4 Sb3 32. cxb3 cxb5 33. bxa4
play all play one stop play next play all
Eine eindeutige Beweispartie mit 6 Frolkin-Ceriani-Umwandlungen (je zweimal Dame, Turm und Springer)! Ein phantastischer Rekord.
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comment
Keywords: Ceriani-Frolkin Theme (DTSdts), Unique Proof Game
Genre: Retro
Computer test: Natch 2.4: 127h 50mn 26.91s. (Silvio Baier)
Reprints: Thema Danicum 100 2000
H35 FIDE Album 1992-1994 2001
(21) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2019-2-7 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (100)