Tuesday, April 01, 2008

Nabokov challenge

Vladimir Nabokov composed chess problems. Here's a clever one from 1932: "White retracts its last move and mates in one."

This is an instance of retrograde analysis: Of the many legal moves that White might just have made, only one can be revised to yield an immediate mate. Can you find it?

Click here to find the answer on Futlity closet


Blogger Preachrboy said...

I don't get it, Neil. If the pawn on d7 underpromotes to a knight... why is it mate? Can't the black king simply play Kxc7 then???

11:01 AM  

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