<s>[INST] What does a "+" sign signify in chess notation? [/INST] In chess notation, the "+" sign is used to indicate a check. When a move puts the opponent's king in a position to be captured (check), a "+" symbol is added to the notation of that move.</s>\ <s>[INST] Are there other ways to notate a check? [/INST] Yes, there are other ways to notate a check. For example, a "ch" can be added to the notation to indicate a check, as can a "#" sign. Additionally, some players will use "++" to indicate a double check.</s>\ <s>[INST] How do you notate the promotion of a pawn? [/INST] 