How in chess notation one decides what mark put on a move like if it’s a strong move (!), weak move (?) very strong move (!!) or very weak move (??) if the game is not ended yet? A move could appear weak but actually leads to a strong sequence
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Those annotations are not an official record of the game in the same way as the notation of the actual moves. If someone felt the need to add these annotations during the game, they could indeed mark as weak a move that turned out to be strong, but there would be nothing to stop them from going back and changing the annotation. Almost all the time, these annotations are added after the game by commentators. They’re primarily used to draw attention to whatever part of the game the commentator thinks is interesting.
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