[Event "45th FIDE Chess Olympiad 2024"] [Site "Budapest"] [Date "2024.09.18"] [Round "07"] [White "Mastrovasilis, Dimitrios"] [Black "Dominguez Perez, Leinier"] [Result "0-1"] [WhiteElo "2550"] [BlackElo "2748"] [TimeControl "5400+30"] [Variant "Standard"] [ECO "B51"] [Opening "Sicilian Defense: Moscow Variation"] [StudyName "45th FIDE Olympiad"] [ChapterName "Mastrovasilis, Dimitrios - Dominguez Perez, Leinier"] [ChapterURL "https://lichess.org/study/y8ExkpJx/J9YdCZ1I"] [Annotator "https://lichess.org/@/ChessLifeOnline"] [Orientation "white"] 1. e4 { [%clk 1:30:53] } 1... c5 { [%clk 1:30:48] } 2. Nf3 { [%clk 1:31:09] } 2... d6 { [%clk 1:31:14] } 3. Bb5+ { [%clk 1:31:21] } 3... Nd7 { Playing for a win, Black chooses the slightly more combative response against the Moscow and keeps pieces on the board. } { [%clk 1:29:21] } 4. d4 { [%clk 1:31:27] } 4... cxd4 { [%clk 1:29:01] } 5. Nxd4 { [%clk 1:31:40] } 5... Nf6 { If Black is not careful, White may create a Maroczy Bind structure with c2-c4. } { [%clk 1:29:05] } 6. O-O { [%clk 1:31:19] } 6... a6 { [%clk 1:28:59] } (6... Nxe4? 7. Re1! d5 (7... Nf6 8. Nf5! { gives White a crushing edge, as the d6-pawn falls by force. } 8... e6 9. Nxd6+ Bxd6 10. Qxd6 $16)) 7. Bd3 { [%clk 1:31:19] } 7... Nc5 { [%clk 1:28:32] } 8. Nc3 { [%clk 1:31:11] } 8... e6 { [%clk 1:28:31] } 9. a4 { [%clk 1:29:44] } 9... Be7 { [%clk 1:28:07] } 10. Re1 { [%clk 1:21:52] } 10... O-O { [%clk 1:23:34] } 11. Bf1 { [%clk 1:12:28] } 11... Qc7 { [%clk 1:20:44] } 12. a5 { [%clk 1:10:09] } 12... b5 { [%clk 1:19:39] } 13. axb6 { [%clk 1:07:21] } 13... Qxb6 { Black does not seem to have any problems out of the opening, with a flexible center and pressure on the e4-pawn. } { [%clk 1:20:06] } 14. b4 { The only combative try. } { [%clk 0:46:50] } 14... Ncd7 { [%clk 1:20:24] } (14... Qxb4? 15. Ncb5! $16 { uses the pin on the a6-pawn to prepare c2-c3 and trapping the queen. }) 15. b5!? { [%clk 0:35:59] } (15. Na4 Qc7 16. Qe2 Bb7 17. f3 Rfc8 $14 { would be normal development. }) 15... Bb7 { [%clk 1:17:18] } 16. Be3 { [%clk 0:33:54] } 16... Qc7 { [%clk 0:57:22] } 17. bxa6 { [%clk 0:33:38] } 17... Bxa6 { [%clk 0:57:48] } 18. Bxa6 { [%clk 0:21:45] } 18... Qxc3 $15 { Black is happy to remove this piece, taking away Nc3-d5 ideas and making Black's central expansions easier. } { [%clk 0:58:10] } 19. f3?! { [%clk 0:14:17] } 19... d5! { [%clk 0:50:44] } 20. exd5 { [%clk 0:13:54] } 20... Nxd5 { [%clk 0:51:08] } 21. Bf2 { [%clk 0:14:12] } 21... Bb4 { [%clk 0:51:00] } 22. Bb5 { [%clk 0:08:25] } 22... N7f6 { [%clk 0:49:49] } 23. Rxa8 { [%clk 0:05:51] } 23... Rxa8 { [%clk 0:50:16] } 24. Qe2 { [%clk 0:05:02] } 24... Bc5 { Black's pieces have an easier time moving, hence Black's gnawing edge. } { [%clk 0:29:06] } 25. Qd3 { [%clk 0:03:04] } 25... Qb2 { [%clk 0:24:21] } 26. Bc6?? { White underestimates his own king's vulnerability. } { [%clk 0:02:08] } (26. Qc4 Bb6 { leaves White short on moves. } (26... Ra1?? 27. Qxc5 { was the simple point. }) 27. g3! h5 28. Kg2 g6 29. h4 $15 { is White's attempt at a fortress, when Black is still better. }) 26... Ra1! { A winning position. Taking on e1 wins the d4-knight. But any knight move leaves the bishop pinned and the e1-rook hanging. Taking on a1 loses material too: } { [%clk 0:22:46] } 27. Rd1 { [%clk 0:01:29] } (27. Rxa1 { loses material due to } 27... Qxa1+ 28. Qf1 Bxd4! { winning a clear piece. }) 27... Nb4 { [%clk 0:22:40] } 28. Qf1 { [%clk 0:01:26] } 28... Rxd1 { [%clk 0:22:53] } 29. Qxd1 { [%clk 0:01:49] } 29... Nxc6 { [%clk 0:23:11] } 30. Nxc6 { Creating a hanging piece on c6 for the winning tactic: } { [%clk 0:01:51] } 30... Bxf2+ { [%clk 0:23:36] } 31. Kxf2 { [%clk 0:02:16] } 31... Qb6+ { 0-1 Black wins. } { [%clk 0:24:01] } 0-1