Chess is the gymnasium of the mind.
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[Event "rated untimed match"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Alehin"] [Black "Nestor"] [Result "1-0"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "3r3k/3P1ppp/p3q3/1pR1P3/2p5/Q5PP/P4P1K/8 w - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1. Rc8 Rxc8 2. Qe7 { Taking advantage of black's very weak back rank. } 2... Qxe7 ( { Black can try: } 2... Rg8 3. d8=Q { White wins with a large material advantage. } ) ( { Black can also try: } 2... Qxd7 3. Qxd7 Rf8 4. Qd6 Kg8 5. Qxa6 { White wins with a large material advantage. } ) 3. dxc8=Q+ Qe8 4. Qxe8# 1-0