Chess Glitch?

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boymaster

Ok, so I was playing this game with someone, and I won that game.

So, he (or she) played Bf4, but the board showed that the bishop is on c5. 

What's more crazy is that the bishop came from c1.

I captured the "glitch" bishop, but there is no x in the notation.

I was lucky that I won that game, but , what is this kind of glitch?

Something with the servers? Please solve this problem to prevent confusion.

Pat_Zerr

Got a link to the game?