[Event "Open 50+"] [Site "Prague"] [Date "2025.02.23"] [Round "06"] [White "Kaidanov, Gregory"] [Black "Kotsur, Pavel"] [Result "1-0"] [WhiteElo "2513"] [BlackElo "2478"] [TimeControl "40/5400+30:1800+30"] [Variant "Standard"] [ECO "C50"] [Opening "Italian Game: Giuoco Pianissimo, Normal"] [StudyName "2025 FIDE World Senior Team Championships"] [ChapterName "Kaidanov, Gregory - Kotsur, Pavel"] [ChapterURL "https://lichess.org/study/lbyDv1vS/pBFJB25J"] [Annotator "https://lichess.org/@/ChessLifeOnline"] [Orientation "white"] 1. e4 { [%clk 1:30:51] } 1... e5 { [%clk 1:30:27] } 2. Nf3 { [%clk 1:31:14] } 2... Nc6 { [%clk 1:30:54] } 3. Bc4 { [%clk 1:31:38] } 3... Bc5 { [%clk 1:30:27] } 4. d3 { [%clk 1:31:38] } 4... Nf6 { [%clk 1:30:16] } 5. Bg5 { [%clk 1:31:45] } 5... h6 { [%clk 1:28:58] } 6. Bh4 { [%clk 1:31:03] } 6... Be7 { [%clk 1:27:11] } 7. Bg3 { [%clk 1:25:21] } 7... d6 { [%clk 1:26:47] } 8. a3 { [%clk 1:23:44] } 8... O-O { [%clk 1:20:11] } 9. h3 { [%clk 1:17:56] } 9... Nh7 { [%clk 1:10:17] } 10. O-O { [%clk 1:13:57] } 10... Kh8 { [%clk 1:06:28] } 11. Nc3 { [%clk 1:10:37] } 11... f5 { [%clk 1:02:17] } 12. exf5 { [%clk 1:10:05] } 12... Bxf5 { [%clk 1:02:43] } 13. Nd5 { [%clk 1:08:39] } 13... Nf6 { [%clk 1:01:43] } 14. Nxe7 { [%clk 1:06:35] } 14... Nxe7 { [%clk 0:52:40] } 15. Re1 { [%clk 1:03:42] } 15... Qc8 { [%clk 0:43:32] } 16. Nd2 { [%clk 0:51:56] } 16... Bg6 { [%clk 0:39:51] } 17. Bh2 { [%clk 0:48:28] } 17... Qd7 { [%clk 0:27:34] } 18. Bb3 { [%clk 0:44:18] } 18... Bh5 { [%clk 0:26:22] } 19. f3 { [%clk 0:43:20] } 19... Bf7 { [%clk 0:26:29] } 20. Bxf7 { [%clk 0:40:01] } 20... Rxf7 { [%clk 0:26:56] } 21. Nc4 { [%clk 0:37:14] } 21... Nf5 { [%clk 0:25:00] } 22. c3 { [%clk 0:36:28] } 22... Re8 { [%clk 0:23:05] } 23. Qd2 { [%clk 0:34:24] } 23... b6 { [%clk 0:22:18] } 24. Bxe5 { [%clk 0:28:11] } 24... dxe5 { [%clk 0:22:16] } 25. Nxe5 { [%clk 0:28:35] } 25... Rxe5 { [%clk 0:22:19] } 26. Rxe5 { [%clk 0:29:00] } 26... Nh4 { [%clk 0:21:49] } 27. Rf1 { [%clk 0:15:32] } 27... Ng6 { [%clk 0:18:14] } 28. Ree1 { [%clk 0:15:53] } 28... Nh5 { [%clk 0:11:37] } 29. d4 { [%clk 0:14:07] } 29... Nhf4 { [%clk 0:10:25] } 30. Re4 { [%clk 0:13:46] } 30... Qf5 { [%clk 0:08:25] } 31. Rf2 { [%clk 0:10:51] } 31... h5 { [%clk 0:06:37] } 32. Re8+ { [%clk 0:09:52] } 32... Kh7 { [%clk 0:06:50] } 33. Qc2 { [%clk 0:09:51] } 33... Qg5 { [%clk 0:06:24] } 34. Kh1 { [%clk 0:08:54] } 34... Qg3 { [%clk 0:05:38] } 35. Rf1 { [%clk 0:08:56] } 35... h4 { [%clk 0:04:51] } 36. Rfe1 { [%clk 0:07:12] } 36... Rf5 { [%clk 0:03:07] } 37. R1e5 { [%clk 0:06:23] } 37... Rxe5 { [%clk 0:02:16] } 38. Rxe5 { [%clk 0:06:25] } 38... Kh6 { [%clk 0:02:32] } 39. Re4 { [%clk 0:06:32] } 39... Qg5 { [%clk 0:02:08] } 40. Kh2 { [%clk 0:05:04] } 40... Qf6 { [%clk 0:01:28] } 41. Qd2 { [%clk 0:04:58] } 41... Kh7 { [%clk 0:01:37] } 42. Qe3 { [%clk 0:26:51] } 42... Qf5 { [%clk 0:30:42] } 43. c4 { [%clk 0:24:35] } 43... Qg5 { [%clk 0:21:08] } 44. Qd2 { [%clk 0:22:08] } 44... a5 { [%clk 0:21:04] } 45. b4 { [%clk 0:21:29] } 45... a4 { [%clk 0:20:55] } 46. d5 { [%clk 0:20:32] } 46... Qf6 { [%clk 0:16:02] } 47. c5! { The breakthrough with the extra queenside pawn is White's only winning plan. The game is equal otherwise. E.g., } { [%clk 0:18:46] } (47. Qc2 Qf5 { when the c-pawn is tied to defending the d5-pawn, and White has no improving moves. }) 47... bxc5 { [%clk 0:10:15] } 48. bxc5 { [%clk 0:19:08] } 48... Qg5 { Black's key defensive resource. In the time it takes White to push a pawn through, three pieces encroach on White's king. } { [%clk 0:10:43] } 49. d6 { Not the only move, but the most concrete. } { [%clk 0:11:46] } 49... cxd6 { [%clk 0:11:11] } 50. cxd6 { [%clk 0:12:01] } 50... Qg3+ { Otherwise, the f4-knight c an neither join the attack on White's king nor defend against White's passed d-pawn. } { [%clk 0:11:36] } 51. Kh1 { [%clk 0:09:59] } 51... Nxh3 { Black threatens to win an Exchange with ... Nh3-f2+, while taking the knight allows Black a perpetual. } { [%clk 0:11:57] } 52. d7! { Without this move, the whole sequence would be refuted. But, now, White comes out ahead. } { [%clk 0:07:14] } 52... Nf2+ { [%clk 0:03:16] } 53. Qxf2 { [%clk 0:07:13] } (53. Kg1?? h3! { wins for Black! E.g. } (53... Nxe4?! { offers Black some chances, but is not decisive. } 54. fxe4 Ne5! 55. d8=Q Nf3+ 56. Kf1 Nxd2+ 57. Qxd2 Qxa3 $17) 54. Qxf2 h2+ { when Black will emerge queen-up. }) 53... Qxf2 { [%clk 0:03:43] } 54. d8=Q { Black has no way to force more checks. } { [%clk 0:07:34] } 54... Qg3 { [%clk 0:01:02] } (54... h3 55. Qg5 { is the final defensive resource White needed. }) 55. Qd7 { With ... h4-h3 shut down, Black resigned. } { [%clk 0:07:00] } 1-0