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by V-2 4211 days ago
There's weak and strong level of solving chess.

You don't need to know the best move in every position of every possible chess game in order to play perfectly.

Eg. playing with White it is enough for you to always know what your best move is. And once you stick to it, then 99.9999... of these possible games will NEVER occur, because that would require White making at least one non-perfect move on the way.