How important is opening( Opening can increase up to 150 elo) - Chess Forums

Some tests in chess engine testing showed that good opening book can increase rating +100 to 150 ( depends on depth of opening book). Today I saw testing "Bong cloud"(the worst opening) among top engines. After about 12 games, data show that Bong cloud decrease the engine rating up to 400 elo .( Top

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How important is opening( Opening can increase up to 150 elo) - Chess Forums

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