Are you sure? He couldn't have moved the pawn, since the king would be on a7 (not the pawn) and there are no adjacent legal squares for the king. He couldn't have another piece, as it was black's move, not white (so no capturing) Am I missing something?
Mate in 1 puzzles!!
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Yes. Last moves could've been Kb6*a7, Kb8*a7, Ka8*a7 (possibly captures) or bxa6 capturing something.
Apr 10, 2016
0
#24
yes, good points! I had overlooked the king haven just been checked, or the pawn capturing from the b-file
Remellion is right; there are actually 4 last moves (ignoring the detail of optional capturing)!
This is the prime command when playing a position backward: You can always check your own king but never your opponents king.
finn416 wrote:
finn416 wrote: WeLearnChess wrote: You could try the book Chess: 5334 Problems, Combinations, and Games by Laszlo Polgar. There are over 300 Mate-in-One puzzles that get progressively more difficult, and then the book continues with Mate in Two (over 3,000 puzzles), Mate in Three, and then combination puzzles. The book is a bit older so some libraries have a copy of it, or you can get a relatively cheap copy online. I'm not looking for books, as implied by the OP.
WeLearnChess wrote:
You could try the book Chess: 5334 Problems, Combinations, and Games by Laszlo Polgar. There are over 300 Mate-in-One puzzles that get progressively more difficult, and then the book continues with Mate in Two (over 3,000 puzzles), Mate in Three, and then combination puzzles. The book is a bit older so some libraries have a copy of it, or you can get a relatively cheap copy online.
I'm not looking for books, as implied by the OP.
Arisktotle wrote:
finn416 schreef:
OOPS!! Bh8 is supposed to be Black! Sorry!
1 little buggy removed, 1 little buggy added. Only 1 mate remains, but now there are 2 dark-squared black bishops on a7 and h8!
I know! 
Mate in one
Solution in white text (highlight to read):
1. Ng4#
Tries: 1.Ng6+? Qe5+!, 1.Nf3+? (and other moves of this knight) ... Rg3!, 1.Nf6+? Qd5!, 1.Nf4+? Kxe5!, 1.Nb6+? Nd4!, 1.Nxc7+? Kxc7!, 1.Nxe7+? Kxe7!, 1.d8Q+? Rd7!, 1.dxe8N+? (or fxe8N+?) ... Rxe8!, 1.Rxe6+? Kxe6!, 1.Rxc6+? Rxc6!, 1.bxc5+? Kxc5!
Arisktotle wrote:
Re6?
Mate in one
Solution in white text (highlight to see):
1.Ndb4# The other move which seemingly mates is 1.0-0-0 but it is illegal since the black rook on a2 could never have arrived there without moving Ra1!
tima_kz schreef:
Re6?
1. Re6+? Rxh7!
1. Rxe7+? Qg6!
Ohhh! Sorry(
Nope, black has 3 legal last moves. Try to find them and learn some about retrograde analysis.