My opponent had 1 second left and I mouse slipped the only move that loses ra8? hanging my rook, when rb8 was intended. #Feelsbadman
in one game I played Queen from h8 to e8 (Qe8+), losing my queen because of a mouse slip. I asked for a takeback (just in case he accepts, I dont get angry if people dont accept takeback, maybe just with myself). Well my oponent gave me the takeback and let me mate him with Qd8++ :)
One of my worse mouse slip:
http://en.lichess.org/14VPDTbRwU3HI meant to move my rook up instead of castling