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Expert · Puzzle #453
2
6
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9
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9
2
7
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1
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9
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4
"When you see a good move, look for a better one." — Emanuel Lasker
"When you see a good move, look for a better one." — Emanuel Lasker
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré