Place 5 queens on a chessboard so that they attack every square.
There are several possible solutions. Here is one:
Note: A 4-queens solution is not possible, but the proof requires brute-force.
Place 5 queens on a chessboard so that they attack every square.
There are several possible solutions. Here is one:
Note: A 4-queens solution is not possible, but the proof requires brute-force.