<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
What does a "+" sign signify in chess notation?<|im_end|>
<|im_start|>assistant
In chess notation, the "+" symbol indicates a check. For example, "Nf3+" would indicate a knight move to square f3 that results in a check to the opponent's king.<|im_end|>
<|im_start|>user
Are there other ways to notate a check?<|im_end|>
<|im_start|>assistant
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.<|im_end|>