Mouse or Fudging by the opponent?

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Dharti
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x-5058622868

Computer problem. I've had something similar happen. My computer was acting up before i had connected to that site.

BrooklynXpat

I think it's a Java issue. Too many players with the same problem.

macer75

Whenever you have to ask that question in relation to a game on chess.com, the answer is always "mouse." I don't know enough about other chess sites to say the same about them, but I suppose that would probably hold true for other major chess sites as well.