We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A question mark marking a move the annotator judges weak.
Also known as: Weak move symbol, Chess question mark
A single question mark after a move marks it as a mistake — a move that worsens the position, though not necessarily a losing one. Like the exclamation mark, it is an opinion nobody issues officially.
Marks a move the annotator judges a mistake. A near-universal convention of chess literature, not a rule defined by FIDE.
A question mark — a hooked stroke above a dot — written after the move.
The two ends of the same scale: ! approves, ? criticises.
Doubling the question mark grades the criticism up from mistake to blunder.