9

Part of VMEO II 2005

Problems(1)

9 queens and 1 king on a 8x8 board, no queen may capture another

Source: 2005 VMEO II p9 Vietnamese Mathematics e - Olympiad https://artofproblemsolving.com/community/c2463154_2005_vmeo_ii

On a board with

64

8 \times 8

) squares, find a way to arrange

9

1

king so that every queen cannot capture another queen.

ChessboardqueensQueencombinatorics