Okay, so I'm analyzing this game, and maybe it's been a long day, but I'm stumped after a good number of minutes about why white just played Bxg4...

...And black allowed it with Bxf2, of all things! Can anyone explain this to me?

Let's see the whole game or at least several moves prior. And while you're at it, give us the players names, the year and place of the game. An analysis board or board editor we could play around with would help too. Offhand I'm as clueless as you are here.

Time pressure?

lol

[Event "Litomysl op"]

[Site "Litomysl"]

[Date "2004.12.30"]

[Round "6"]

[White "Zawadzki, Stanislaw"]

[Black "Plischki, Sebastian"]

[Result "1/2-1/2"]

[ECO "B12"]

[WhiteElo "2398"]

[BlackElo "2346"]

[PlyCount "89"]

[EventDate "2004.12.26"]

[EventType "swiss"]

[EventRounds "9"]

[EventCountry "CZE"]

[Source "ChessBase"]

[SourceDate "2005.03.01"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. Be3 Nc6 8. dxc5

h5 9. Nd4 a6 10. Nxc6 bxc6 11. Qd4 hxg4 12. O-O-O Be7 13. Be2 Bf5 14. Qa4 Qc7

15. Bf4 Bxc5 16. Bxg4 Bxf2 17. Rd3 Qb6 18. Nd1 Ne7 19. Nxf2 Qxf2 20. Rd2 Qb6

21. Bg5 Rb8 22. c3 Be4 23. Re1 Nf5 24. Bxf5 Bxf5 25. h4 O-O 26. h5 Kh7 27. Be7

Rg8 28. b3 c5 29. Bd6 Rbd8 30. Qf4 d4 31. cxd4 c4 32. Re3 Rc8 33. Bc5 Rxc5 34.

dxc5 Qxc5 35. bxc4 Rb8 36. Rb3 Rb4 37. Rxb4 Qxb4 38. Kd1 Qc3 39. Ke2 Qh3 40.

Kf2 Qxh5 41. Kg1 g5 42. Qh2 Bh3 43. Qg3 Kg6 44. c5 Bf5 45. Qe3 1/2-1/2

Not sure why the position before matters so much in something like this, but there is the entire game.