Chess players that went insane, DARPP-32 gene https://www.chess.com/forum/view/general/6-masters-who-proved-that-chess-kills-your-brain-and-you-life—you-are-warned
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Chess players that went insane, DARPP-32 gene https://www.chess.com/forum/view/general/6-masters-who-proved-that-chess-kills-your-brain-and-you-life—you-are-warned