It is an abomination to play at chess, dice, or any other game, for if anything be staked it is gambling (maisir), which is expressly forbidden in th… - Caryl Chessman

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It is an abomination to play at chess, dice, or any other game, for if anything be staked it is gambling (maisir), which is expressly forbidden in the Qur'an; or if, on the other hand nothing be hazarded it is useless and vain. Besides, the Prophet has declared all the entertainment of a Muslim to be vain except three: the breaking in of his horse, the drawing of his bow, and playing and amusing himself with his wives. Several of the learned, however, deem the game at chess lawful as having a tendency to quicken the understanding. This is the opinion of ash-Shafi`i. If a man play at chess for a stake, it destroys the integrity of his character, but if he do not play for a stake, the integrity of his character is not affected.