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3 problem(s) found in 4819 milliseconds (displaying 3 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT A='Keym, Werner' AND S='Nation Belge'] [download as LaTeX]

1 - P0003815
Jean Oudot
Nation Belge 1956
P0003815
(5+11) C+
#2
Kann der sTh3 durch einen sB ersetzt werden?
1. Ld8
1. ... Sf2/Sc3~ 2. De3#
1. ... Sa2/Sd1~ 2. Se2#
1. ... Kxf4 2. Lxc7#
1. ... g5 2. Sh5#
play all play one stop play next play all
Henrik Juel: with a black pawn on h3, we have all eight black pawns on the board, but none of them could come from a7 (2022-11-26)
comment

Genre: Retro, 2#
Computer test: C+ Popeye v4.87
FEN: 8/2p3p1/2p3p1/2Q3B1/5Npp/2n3kr/7p/K2n3B
Reprints: RA13 diagrammes 15 06/1975
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-11-27 more...
2 - P0003816
Jean Oudot
Nation Belge 1956
P0003816
(6+2) C+
#3
1. ... h6 2. La4 Kxa2 3. Tf3 Ka1 4. Ta3#
retro try: 1. Lg8?? h6 2. Tf7 Kxa2 3. Ta7#
play all play one stop play next play all
more ...
comment
Keywords: No legal last move for Black, Minimal
Genre: Retro, 3#
Computer test: C+ Popeye 4.61
FEN: 8/7p/8/7P/8/1B6/P1P2R2/k1K5
Reprints: RA14 diagrammes 15 06/1975
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-11-27 more...
3 - P0003817
Jean Oudot
Nation Belge 1956
P0003817
(14+12) C+
#2
1. cxd6ep
play all play one stop play next play all
paul: Since the wB couldnt leave c1, the captured piece on b6 is the promoted wPh2. If last black move was f7-f5, then h-Pawn captured four pieces to promote on d8, among which bRh8, impossible. Thus, the h-Pawn could only have been promoted from f7 and therefore d7-d5 remains as the last move. (2011-07-02)
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comment
Keywords: En passant as key
Genre: Retro, 2#
Computer test: C+ Popeye 4.61
FEN: qrRNkb2/PpQ1p1pp/1pp1R3/2PpKpP1/6N1/7B/1P1PPP2/8
Reprints: RA15 diagrammes 15 06/1975
(51) Mat Plus 12 10-12/2009
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-11-27 more...
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Gerd Wilts (3)