ChessOnlineFree.com Replay and analyse 31un7sv8

[Event "Rated game"]
[Site "/31un7sv8"]
[Date "2021-11-24"]
[White "Chalifman"]
[Black "Rider"]
[Result "1-0"]
[WhiteElo "1238"]
[BlackElo "1631"]
[PlyCount "83"]
[Variant "standard"]

1. e4 c5 2. f4 Nc6 3. Nf3 d6 4. h3 e6 5. c3 Nf6 6. d3 Be7 7. Be2 Nh5 8. O-O Ng3 9. Rf2 O-O 10. Be3 b5 11. Nbd2 a5 12. Nf1 Nxe2+ 13. Rxe2 b4 14. c4 e5 15. f5 Nd4 16. Nxd4 cxd4 17. Bf2 g6 18. fxg6 fxg6 19. Bg3 Bg5 20. Rf2 Be6 21. Qe2 Rxf2 22. Qxf2 Qe7 23. Kh1 Rf8 24. Qe2 Qd7 25. Nh2 Be3 26. Rf1 Qe7 27. Rxf8+ Qxf8 28. b3 Qf6 29. Qf3 Kg7 30. Qxf6+ Kxf6 31. Nf3 h5 32. Bh4+ g5 33. Be1 g4 34. hxg4 Bxg4 35. Nh2 Be2 36. Nf3 Bxd3 37. Nd2 Bxd2 38. Bxd2 Bxe4 39. Kh2 Kf5 40. Kg3 Bb1 41. Kh4 Kg6 42. g3 1-0

View the computer analysis

https://www.ChessOnlineFree.com/game/31un7sv8/black

Opening B21 Sicilian, 2.f4 and 2.d4