+ ('Maharajah', 'Augmented Queens'),
+ ('Makpong', 'Thai Chess (v2)'),
+ ('Makruk', 'Thai Chess (v1)'),
+ ('Maxima', 'Occupy the enemy palace'),
+ ('Mesmer', 'Mind control (v2)'),
+ ('Minishogi', 'Shogi 5 x 5'),
+ ('Minixiangqi', 'Xiangqi 7 x 7'),
+ ('Monochrome', 'All of the same color'),