Another one move Retrograde

  
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Paul Valle    (2011-03-03 02:39:32)
Another one move Retrograde

ChessPosition (see diagram)
What was the last move made?
8
7
6
5
4
3
2
1
a b c d e f g h




Jordi Domingo    (2011-03-05 18:32:19)
Another one move Retrograde

Last white move was Kxg3. There were a black pawn in f4 and a white pawn in g2, the white King was in f3. Exactly the sequence was: 1...Qh5+ 2.g4 fxg3+ 3.Kxg3+. It's not possible bxa8=B+ because the pawns captured ten pieces, and the black bishop was captured in f8.


Paul Valle    (2011-03-10 22:52:56)
Sam Loyd (1891)

wow, nice one Jordi! I thought that one would stand unsolved for ages.