Sandra Carter


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The site allows all legal moves. But based on the rest of your post, it sounds like you were impacted by lag and/or disconnects.
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https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues
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https://support.chess.com/article/873-how-can-i-improve-my-live-chess-connection
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Also, opening tickets to support is how you contact staff.
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https://support.chess.com/article/346-contact-us