[fen ""]
1. e4 e5
2. Nf3 Nc6
3. Bc4 Nf6
4. Nc3 Bc5
5. d3  h5
6. Bg5 Kf8???
7. Bd5 d6
8. Bc6 c6

causes a bug on "c6". The b7 pawn is supposed to capture the bishop, but instead the c7 pawn just goes on the bishop.

Screenshot 8.Bc6


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  • 2
    Try bxc6 instead, that's the correct pgn notation. – Andrew Mar 7 '14 at 15:44
  • @Andrew ah. I did try b7xc6 and xc6. Don't know why that didn't occur to me. – Guy Mar 7 '14 at 15:45
  • @Andrew thanks. works like a charm. – Guy Mar 7 '14 at 15:47

As indicated by Andrew in the comments, try bxc6 instead of c6. The PGN viewer requires correct PGN, what happens when the PGN is invalid is undefined behaviour.

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