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In this game my opponent told me he played the move 23.Rb1f1 However the move 23.Rb1e1 was seen on my board and is now seen on his board as well. Game: g1105284371 http://www.net-chess.com/viewgame.cgi?p1=g1105284371&r=2953.4727763698897 Also in another game I originally seen the move 10.Rfxd1 and n...

Game: g1105258700
The board position has changed from yesterday.
The move 10...Rb8 is no longer played and a new
move 10...Nf6 is on the board on today.
I don't understand what has happened.