difficult chess puzzle
Logic
Level
4
White to play. What is the minimum number of moves for white to checkmate the black king? Assume both sides play optimally.
The answer is 89.
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1 solution
full explained solution can be find in the paper ''A Computer Composes A Fabled Problem: Four Knights vs. Queen'' by Azlan Iqbal
link- https://arxiv.org/pdf/1709.00931.pdf