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Knightmate. Win by mating the knight. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
David Paulowich wrote on Tue, Jan 10, 2006 12:35 AM UTC:Excellent ★★★★★
White: Knight (d3) and Pawn (e7), 
  Black: Knight (a6) and Rook (d8) 
  +---+---+---+---+---+---+---+---+
  8  |   |:::|   |:r:|   |:::|   |:::|
  +---+---+---+---+---+---+---+---+
  7  |:::|   |:::|   |:P:|   |:::|   |
  +---+---+---+---+---+---+---+---+
  6  | n |:::|   |:::|   |:::|   |:::|
  +---+---+---+---+---+---+---+---+
  5  |:::|   |:::|   |:::|   |:::|   |
  +---+---+---+---+---+---+---+---+
  4  |   |:::|   |:::|   |:::|   |:::|
  +---+---+---+---+---+---+---+---+
  3  |:::|   |:::| N |:::|   |:::|   |
  +---+---+---+---+---+---+---+---+
  2  |   |:::|   |:::|   |:::|   |:::|
  +---+---+---+---+---+---+---+---+
  1  |:::|   |:::|   |:::|   |:::|   |
  +---+---+---+---+---+---+---+---+
  a   b   c   d   e   f   g   h

diagram

leads to 1.exd8(K) Nb8 2.Kc7 Na6 3.Kb7 mate! Promotion to a Queen is stalemate. To meet Robert's challenge in the first Comment, we need to verify that promotion to either Bishop or Rook in this position will also lead to a draw. This 'capture promotion' ending could reasonably happen in a real game after the Black Rook had captured on d8. But it would be extremely rare.