The Hardest Chess Puzzle
White to move and mate in 6. Can you tell what is so unusual about this puzzle?
SOLUTION
What is so unusual about this puzzle is that there is only one possible income of the game. The moves are as follows:
- d4 b5
- d5 b4
- axb4 a3
- b5 a2
- b6 a1Q
- b7#
