When annotating chess games, commentators frequently use widely recognized annotation symbols. Question marks and exclamation points that denote a move as bad or good are ubiquitous in chess literature.[1] Some publications intended for an international audience, such as the Chess Informant, have a wide range of additional symbols that transcend language barriers.[2]
The common symbols for evaluating the merits of a move are "??", "?", "?!", "!?", "!", and "!!". The chosen symbol is appended to the text describing the move (e.g. Re7? or Kh1!?); see Algebraic chess notation.
Use of these annotation symbols is subjective, as different annotators use the same symbols differently or for a different reason.
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