What Is the Rarest Chess Rule?

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What chess accuracy is suspicious? This guide explains what 70%, 77%, 95%, 97%, 99%, and 100% accuracy really mean, when high accuracy starts to look suspicious, and why one game never proves cheating.

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Most players miss one-move threats in chess not because they are untalented, but because they start with their own idea before they properly check the opponent’s forcing ideas. Public explanations of missed threats repeatedly point to tunnel vision, time pressure, emotional bias, and mental fatigue