If you have tried to follow my game against Anatoly Tsinker, you will see a very strange thing happen. For blacks' 18th move of Ng4, it takes the knight from a4 and moves it to g4. Then for black's 19th move of Bf6, it plays Bxf6. (It's capturing it's own knight.) Move 20 for black is supposed to be Kc3, forking my rooks. Move 21 is supposed to be Nxa2. Then the rest of the game seems to play normally. I checked the pgn file, and the moves are fine. It plays through normally on Chess Base. I even reloaded it on Chess Publisher and edited the post with the new link. Same thing! I'm too tired and it's past my bedtime so it's staying as is for the moment.
Anyone else seen this happen before?