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

Question

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

In: Other

Answer 1

There is actually notation for a move that looks bad but may turn out good: ?!

For the others, sometimes there are moves that are just objectively bad or dubious with a very low likelihood of leading to something better. Chess is a very deeply analyzed game. Most opening moves and end game sequences are studied intensely and their relative strengths known.