[Event "Petrosian-systemet Arena"] [Site "https://lichess.org/wJHbozlz"] [Date "2023.02.14"] [White "Bultenibo"] [Black "Tivachoo"] [Result "1-0"] [UTCDate "2023.02.14"] [UTCTime "17:40:04"] [WhiteElo "2586"] [BlackElo "1585"] [WhiteTitle "IM"] [Variant "From Position"] [TimeControl "180+2"] [ECO "?"] [Opening "?"] [Termination "Normal"] [FEN "r4rk1/2qbbppp/p2p1n2/npp1p3/3PP3/2P2N1P/PPBN1PP1/R1BQR1K1 w Qq - 0 1"] [SetUp "1"] [Annotator "lichess.org"] 1. Nf1 Be6 2. d5 Bd7 3. b3 b4?! { (0.92 → 1.56) Inaccuracy. g6 was best. } (3... g6) 4. c4?! { (1.56 → 0.97) Inaccuracy. Bd2 was best. } (4. Bd2 Rfb8 5. Rc1 Qb6 6. Ne3 g6 7. cxb4 cxb4 8. Bd3 Rc8 9. Qe2 Rxc1 10. Rxc1 Bb5) 4... h6 5. N3h2 Nb7 6. f4 Nh7 7. f5 Bg5 8. Bxg5 Nxg5 9. h4 Nh7 10. g4 Qd8 11. Nf3 Nf6?! { (1.22 → 2.08) Inaccuracy. f6 was best. } (11... f6 12. Re2 Kf7 13. Ne3 a5 14. Rh2 Rh8 15. Kh1 a4 16. bxa4 Qe8 17. a3 Bxa4 18. axb4) 12. N1h2 Qe7 13. Kh1?! { (2.36 → 1.45) Inaccuracy. g5 was best. } (13. g5 Nh7 14. Qd2 h5 15. Kh1 g6 16. Nf1 a5 17. a4 bxa3 18. Rxa3 Ra6 19. Ng3 Rfa8) 13... Nd8? { (1.45 → 2.88) Mistake. Nh7 was best. } (13... Nh7) 14. Rg1 Nh7 15. g5 hxg5?! { (3.09 → 4.12) Inaccuracy. g6 was best. } (15... g6 16. gxh6 Kh8 17. Qd2 Rg8 18. Raf1 a5 19. Ng5 Nf6 20. Ng4 Nxg4 21. Rxg4 Qf8 22. Nh3) 16. hxg5 Re8?! { (4.06 → 5.46) Inaccuracy. g6 was best. } (16... g6 17. Qd2 Kg7 18. Raf1 Rh8 19. Nh4 Qe8 20. Ng4 a5 21. f6+ Kg8 22. Nh6+ Kf8 23. Rf2) 17. Qe1 Nf8 18. Qh4 a5 19. Ng4 Bc8?? { (6.73 → Mate in 8) Checkmate is now unavoidable. Ng6 was best. } (19... Ng6 20. Qh5 Nf4 21. Qh2 Ng6 22. Rg3 Nc6 23. dxc6 Bxc6 24. Rf1 Qb7 25. fxg6 fxg6 26. Rh3) 20. Nf6+ Qxf6 21. gxf6 g6 22. Qh6 Nde6 23. dxe6 Nxe6 24. fxe6 fxe6 25. Qg7# { White wins by checkmate. } 1-0