MathDB
TOT 559 1997 Autumn S O4 max no of knight in 5x5 chessboard

Source:

September 11, 2024
combinatoricsChessboard

Problem Statement

The maximum possible number of knights are placed on a 5×55 \times 5 chessboard so that no two attack each other. Prove that there is only one possible placement.
(A Kanel)