Least number of moves to checkmate the black king
Logic
Level
3
White to play. What is the least number of moves for white to checkmate the black king? Assume both sides play optimally.
5
2
1
4
3
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1 solution
Key move: Ra2!, any move for the black army will result in mate in 1 or 2. So the least number of moves to mate the black king is 3 if both sides play optimally.