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What do exclamation marks and question marks mean in annotated chess games?

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A chessboard showing the standard starting position for a game, with white and black pieces arranged in two rows on each side: rooks, knights, bishops, queen, and king on the back row, and pawns in front. — chess Position of chess pieces at the beginning of a game. The pieces are placed on the two ranks closest to the player. In the closest rank, pieces are arranged from left to right: rook, knight, bishop, queen, king, bishop, knight, and rook. In front of that rank, each square has a pawn.

In chess, annotation symbols are used to evaluate the quality of a move during game analysis. These marks provide a shorthand for players to understand the strategic value of specific decisions:1

!: A very good move.
!!: An extremely good or brilliant move.
?: A bad move or a mistake.
??: A blunder, which is a move that significantly worsens a player's position.
!?: A double-edged or somewhat dubious move that may be interesting but carries risk.1

These symbols are essential for studying game notation and learning from past matches.1