Editing Games

==Some chess Game==
<pgn>[Event "Berlin"] [Site "Berlin GER"] [Date "1852.??.??"] [EventDate "?"] [Round "?"] [Result "1-0"] [White "Adolf Anderssen"] [Black "Jean Dufresne"] [ECO "C52"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "47"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O d3 8.Qb3 Qf6 9.e5 Qg6 10.Re1 Nge7 11.Ba3 b5 12.Qxb5 Rb8 13.Qa4 Bb6 14.Nbd2 Bb7 15.Ne4 Qf5 16.Bxd3 Qh5 17.Nf6+ gxf6 18.exf6 Rg8 19.Rad1 Qxf3 20.Rxe7+ Nxe7 21.Qxd7+ Kxd7 22.Bf5+ Ke8 23.Bd7+ Kf8 24.Bxe7# 1-0</pgn>

==T287843==
;Broken:
Uses both rank and file to specify source of move 21

<pgn>
[Event "Foo"]
[Site "Bar"]
[Date "2020.12.30"]
[Round "?"]
[Result "1/2-1/2"]

1. e4 e5 2. Qh5 h6 3. Qxh6 g6 4. Qxg6 a6 5. h4 Nf6 6. Qxf6 Rh6 7. Qxh6 Bg7 8.
Qxg7 f6 9. Qxf6 b6 10. h5 c6 11. h6 d6 12. h7 Kd7 13. h8=Q Kc7 14. g4 Kb7 15. g5
a5 16. g6 b5 17. g7 Kb6 18. g8=Q Qf8 19. f3 Qh6 20. Qgf8 d5 21. Qf8xh6 1/2-1/2
</pgn>

;Working, without move 21

<pgn>
[Event "Foo"]
[Site "Bar"]
[Date "2020.12.30"]
[Round "?"]
[Result "1/2-1/2"]

1. e4 e5 2. Qh5 h6 3. Qxh6 g6 4. Qxg6 a6 5. h4 Nf6 6. Qxf6 Rh6 7. Qxh6 Bg7 8.
Qxg7 f6 9. Qxf6 b6 10. h5 c6 11. h6 d6 12. h7 Kd7 13. h8=Q Kc7 14. g4 Kb7 15. g5
a5 16. g6 b5 17. g7 Kb6 18. g8=Q Qf8 19. f3 Qh6 20. Qgf8 d5 1/2-1/2
</pgn>

<pgn>
1. c4 Nf6 2. Nc3 g6 3. g3 (3. e4 d6 4. d4) 3... Bg7 4. Bg2 O-O
5. Nf3 d6 6. O-O Nc6 (6... e5 7. d3 Re8 8. Rb1 c6) 7. Rb1 a5 8. a3
</pgn>