human vs computer

 

[Event "7th World Team Championship"]
[Site "Bursa TUR"]
[Date "2010.01.13"]
[Round "9"]
[White "Vitiugov, N."]
[Black "Rodshtein, M."]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2692"]
[BlackElo "2622"]
[PlyCount "79"]
[EventDate "2010.01.05"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 a6 5. d4 b5 6. b3 Bg4 7. h3 Bxf3 8. Qxf3 e5 9. dxe5 Bb4 10. Bd2 Bxc3 11. Bxc3 Ne4 12. Bb4 bxc4 13. Qg4 c5 14. f3 Nc6 15.fxe4 Nxb4 16. Qxg7 Rf8 17. exd5 Qh4+ 18. Ke2 Qe4 19. Kf2 Nc2 20. Qh6 Qg6 21.Qf4 Nxa1 22. Bxc4 Nc2 23. d6 Rg8 24. g4 Ra7 25. Rd1 Qg5 26. Qe4 Rg6 27. Ke2 h5 28. Rd5 Kd8 29. Qxc2 hxg4 30. e6 Qh6 31. e7+ Ke8 32. Qf5 Rd7 

Fritz gives this continuation

33.Rxc5 threatening mate R-c8 .Black can delay mate by superficial sacrifices.

but as a human   , Vitiugov played Queen sacrifice Qxf7+ and mate follows .Computer did play this sacrifice as a second option may be because its one step more to mate!!