| Try to place all the Queens and Pawns on the board so that no two Queens are attacking each other, i.e. no two Queens can be in the same straight line, horizontally, vertically, or diagonally unless there is a Pawn between them.
This puzzle is a recent variation on the famous Eight Queens Problem. In 2004, the Chess Variant Pages sponsored the 'Nine Queens Contest' in which contestants had to place nine Queens and one Pawn on an 8x8 board so that no two Queens attacked each other. In 2005, Chatham, Fricke, and Skaggs proved that for N>5, you can place N+1 Queens and 1 Pawn on an NxN board so that no two Queens attack each other. |
