Weak points or holes in the opponent's position must be occupied by pieces not Pawns


The Game of Chess (ed. Courier Corporation, 1935) - ISBN: 9780486254470


Weak points or holes in the opponent's position must be occupied by pieces not Pawns

Weak points or holes in the opponent's position must be occupied by pieces not Pawns

Weak points or holes in the opponent's position must be occupied by pieces not Pawns

Weak points or holes in the opponent's position must be occupied by pieces not Pawns