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Re:Magnus Carlsen – “I am chaotic and lazy” (2010) by muyuu on Thursday December 11, 2014 @06:12AM (#8734177)
In real terms it does happen, since branching factor makes true perfection impossible in chess.

You can play theoretically superior chess and calculate more positions than your opponent and still lose the game, although it's very unlikely. Both player have a horizon and sometimes they can bump in a position of clear superiority for one side that none predicted.

Re:Magnus Carlsen – “I am chaotic and lazy” (2010) by kissickas on Thursday December 11, 2014 @10:03AM (#8735057)
I'm not sure I understand. Wouldn't this mean there is a sequence of moves I can memorize that will result in a winning game, every time?

If such a game could be foiled by the other player making a "bad" move, then it would by definition not be a bad move.