[Event "World Youth Championships Under-18 Open"] [Site "Brazil"] [Round "6.4"] [White "Chasin, Nico"] [Black "Harsh Suresh"] [Result "1-0"] [WhiteElo "2412"] [WhiteTitle "IM"] [WhiteFideId "30908477"] [BlackElo "2431"] [BlackTitle "IM"] [BlackFideId "45018464"] [Annotator "https://lichess.org/@/LinuxBrickie"] [Variant "Standard"] [ECO "B42"] [Opening "Sicilian Defense: Kan Variation, Polugaevsky Variation"] [UTCDate "2024.11.08"] [UTCTime "18:36:01"] [Source "https://lichess.org/study/5wenBA8d/CncYpR3Q"] [Orientation "white"] 1. e4 { [%eval 0.18] [%clk 1:26:38] } 1... c5 { [%eval 0.25] [%clk 1:29:26] } 2. Nf3 { [%eval 0.27] [%clk 1:27:00] } 2... e6 { [%eval 0.28] [%clk 1:29:44] } 3. d4 { [%eval 0.4] [%clk 1:26:38] } 3... cxd4 { [%eval 0.37] [%clk 1:30:05] } 4. Nxd4 { [%eval 0.23] [%clk 1:27:02] } 4... a6 { [%eval 0.42] [%clk 1:30:20] } 5. Bd3 { [%eval 0.45] [%clk 1:26:40] } 5... Bc5 { [%eval 0.42] [%clk 1:28:23] } 6. Nb3 { [%eval 0.34] [%clk 1:27:04] } 6... Ba7 { [%eval 0.36] [%clk 1:28:44] } 7. O-O { [%eval 0.31] [%clk 1:27:27] } 7... Nc6 { [%eval 0.3] [%clk 1:17:49] } 8. Qg4 { [%eval 0.24] [%clk 1:24:24] } 8... Qf6 { [%eval 0.25] [%clk 1:10:55] } 9. Qg3 { [%eval 0.25] [%clk 1:18:42] } 9... Qg6 { [%eval 0.22] [%clk 1:07:31] } 10. Qh3 { [%eval -0.04] [%clk 1:14:10] } 10... e5 { [%eval 0.33] [%clk 0:55:27] } 11. Qh4 { [%eval 0.24] [%clk 1:08:45] } 11... Nf6 { [%eval 0.45] [%clk 0:51:08] } 12. Nc3 { [%eval 0.46] [%clk 1:07:23] } 12... Nb4 { [%eval 0.43] [%clk 0:45:05] } 13. Bg5 { [%eval 0.3] [%clk 1:05:42] } 13... d6 { [%eval 0.49] [%clk 0:37:30] } 14. Na5 { [%eval 0.29] [%clk 1:02:11] } 14... O-O { [%eval 0.38] [%clk 0:30:08] } 15. a3 { [%eval 0.07] [%clk 0:58:32] } 15... Nc6?? { [%eval 2.69] } { This natural move comes with tempo on the hanging a5-knight, but it overlooks a lovely tactical resource. Can you find it? } { [%clk 0:27:08] } (15... Nxd3 { Forced. } 16. cxd3 Be6 { This is the simplest way to cover the d5-square, as } (16... Bh3!? { Very sharp and roughly balanced, as 17. gxh3? allows 17. ... h6 regaining the piece with initiative against White's damaged kingside, whereas trading bishops removes the pressure on Black's f6-knight and, accordingly, the d5-square. }) 17. Nxb7 Rab8 { activates the rook to go with the bishop pair as compensation for losing the d6-pawn (which might even help Black activate along another half-open files). } 18. Nxd6 Rxb2 $44 { The queen trade only after 19. Bxf6 Qxf6 20. Qxf6 gxf6 only reinforces the strength of the bishop pair and the weakness of the backwards d3-pawn. }) 16. Nd5! { [%eval 2.69] } { White will meet 16. ... Nxa5?? with 17. Ne7+ forking the king and queen, but capturing the d5-knight reveals the d3-bishop against Black's queen while also threatening d5xc6 winning a piece. } { [%clk 0:58:41] } 16... Nxd5!? { [%eval 3.65] [%clk 0:16:44] } (16... Re8!? { The lesser of all evils, apparently, as } 17. Nc7 (17. Nxc6 bxc6 18. Nc7 Be6 19. Nxa8 Rxa8 $16 { is a full Exchange but, conversely, is just an Exchange! }) 17... Bd7 18. Bxf6 Nxa5 19. Bg5 h6 20. Bd2 Nc6 21. Kh1 Bd4 22. c3) 17. exd5 { [%eval 3.66] [%clk 0:58:50] } 17... e4 { [%eval 3.58] [%clk 0:17:05] } 18. dxc6!? { [%eval 2.7] [%clk 0:56:40] } (18. Bxe4 Bf5 { This was Black's idea, as the queen can come to f5 and pin the d5-pawn to White's own hanging knight on the a5-square! However, } 19. Bxf5 Qxf5 { [%cal Rd5c6,Rf5a5] } 20. dxc6! Qxa5 { lands White in a position with same-colored bishops and already one extra pawn. } 21. Be7 (21. cxb7 Rab8 22. Be7 { Make that a double! } 22... Rfe8 23. Bxd6 Rxb7 24. b4 $18 { White's two extra pawns create a severe three-on-one queenside majority that should be winning straightforwardly. } { [%cal Gc2c4] }) 21... Rfe8 22. cxb7 Rab8 23. Bxd6 Rxb7) 18... exd3 { [%eval 2.67] [%clk 0:17:20] } 19. cxb7 { [%eval 2.9] [%clk 0:57:06] } 19... Bxb7 { [%eval 2.9] [%clk 0:17:24] } 20. Nxb7 { [%eval 2.68] [%clk 0:57:31] } 20... dxc2 { [%eval 2.27] } { White is up a piece for a pawn, rather than two pawns. 21. Be7 goes after a third pawn, but ... Rf8-b8 regains the b-pawn. Ultimately, the pesky c-pawn is the only thing keeping Black's swindling chances alive. In the 18. Bxe4 line, Black had no counterplay, but it still makes sense to put more faith in being "piece-up" than "two pawns up" } { [%clk 0:15:24] } 21. Na5 { [%eval 2.3] [%clk 0:57:22] } 21... Rac8 { [%eval 2.51] [%clk 0:15:39] } 22. Be3 { [%eval 2.48] [%clk 0:56:22] } 22... Bxe3 { [%eval 2.77] [%clk 0:14:16] } 23. fxe3 { [%eval 2.72] [%clk 0:56:48] } 23... Qd3?! { [%eval 3.46] [%clk 0:14:12] } (23... Qe6 { More stubborn, but not providing sufficient compensation. } 24. Qd4 Rc7 25. Rac1 Rb8 26. b4 { Black is trying to show that White's knight is sidelined, but after e4-e5 progress will be made. }) 24. Qd4 { [%eval 3.56] [%clk 0:56:41] } 24... Qb5 { [%eval 3.49] [%clk 0:12:05] } 25. b4 { [%eval 3.44] } { White's knight has regains access to the b3-square and, as such, White can truly feel "piece-up" again. } { [%clk 0:57:00] } 25... Rfe8 { [%eval 3.55] [%clk 0:11:40] } 26. Rac1 { [%eval 3.77] [%clk 0:57:18] } 26... Re7 { [%eval 3.81] [%clk 0:10:13] } 27. Rf2 { [%eval 3.76] [%clk 0:54:58] } 27... Rec7 { [%eval 3.71] [%clk 0:09:07] } 28. Qxd6 { [%eval 3.01] [%clk 0:52:49] } 28... h6 { [%eval 3.02] [%clk 0:05:01] } 29. Rd2 { [%eval 3.17] [%clk 0:42:04] } 29... Rc3 { [%eval 3.16] [%clk 0:02:12] } 30. Qd7 { [%eval 2.99] [%clk 0:41:15] } 30... Qe5 { [%eval 2.93] [%clk 0:02:19] } 31. Rd3 { [%eval 2.87] [%clk 0:38:16] } 31... Qe4 { [%eval 4.08] [%clk 0:01:59] } 32. Rxc3! { [%eval 4.23] } { The only move order to preserve the win. } { [%clk 0:38:18] } 32... Rxc3 { [%eval 4.18] [%clk 0:02:26] } 33. Qd4! { [%eval 4.24] } { Black can win the e-pawn but it comes at the cost of a queen trade into a lost endgame now. } { [%clk 0:38:38] } 33... Qxe3+ { [%eval 4.15] [%clk 0:02:44] } 34. Qxe3 { [%eval 4.19] [%clk 0:39:00] } 34... Rxe3 { [%eval 4.1] [%clk 0:03:12] } 35. Rxc2 { [%eval 4.03] [%clk 0:38:47] } 35... Rxa3 { [%eval 3.99] [%clk 0:03:39] } 36. Rc6 { [%eval 3.72] } { Black is lost now. } { [%clk 0:38:36] } 36... Ra4 { [%eval 3.91] [%clk 0:02:15] } 37. Rb6 { [%eval 3.92] [%clk 0:39:03] } 37... h5 { [%eval 4.32] [%clk 0:01:51] } 38. h4 { [%eval 4.26] [%clk 0:39:15] } 38... g6 { [%eval 4.62] [%clk 0:01:15] } 39. Nb7 { [%eval 4.7] [%clk 0:39:38] } 39... Ra1+ { [%eval 4.69] [%clk 0:01:15] } 40. Kh2 { [%eval 4.57] [%clk 1:10:07] } 40... Kf8 { [%eval 4.82] [%clk 0:30:52] } 41. Nc5 { [%eval 4.65] [%clk 1:10:33] } 41... a5 { [%eval 4.94] [%clk 0:31:11] } 42. Ra6 { [%eval 4.63] [%clk 1:11:01] } 42... Rc1 { [%eval 5.41] [%clk 0:31:21] } 43. Rc6 { [%eval 5.15] [%clk 1:11:08] } 43... axb4 { [%eval 6.37] } { Black resigned before White could choose which discovered check he preferred. } { [%clk 0:26:53] } 1-0