[Event "USA Senior Championship 2025"] [White "Kaidanov,Gregory"] [Black "Dlugy,Maxim"] [Site "Saint Louis"] [Round "2.5"] [Annotator "TA"] [Result "1-0"] [Date "2025.07.16"] [WhiteElo "2505"] [BlackElo "2514"] [PlyCount "123"] [TimeControl "60"] {[%evp 17,123,-7,27,32,12,24,49,46,33,35,54,12,14,14,14,23,56,64,102,82,63,69,75,82,119,127,165,90,88,87,213,163,215,214,203,203,211,221,207,213,218,216,207,194,247,252,245,245,221,204,210,214,214,214,214,214,214,214,214,214,214,214,345,284,408,385,393,392,479,479,479,436,479,479,479,479,479,479,479,477,525,470,514,525,558,492,479,467,438,412,387,375,2062,809,2153,2443,4112,2239,1598,1212,29969,29971,5369,5054,4129,4116,1272,1023]} 1. e4 {[%emt 0:0:4]} c5 {[%emt 0:0:17]} 2. Nf3 {[%emt 0:0:5]} d6 {[%emt 0:0:4]} 3. d4 {[%emt 0:0:6]} cxd4 {[%emt 0:0:4]} 4. Nxd4 {[%emt 0:0:4]} Nf6 {[%emt 0:0:4]} 5. Nc3 {[%emt 0:0:7]} Nc6 {[%emt 0:0:3]} 6. Bc4 {[%emt 0:0:35]} e6 {[%emt 0:0:19]} 7. Be3 {[%emt 0:0:10]} Be7 {[%emt 0:0:6]} 8. Qe2 {[%emt 0:0:57]} O-O {[%emt 0:0:7] was the old line (8...a6).} 9. O-O-O {[%emt 0:0:49]} d5 {[%emt 0:0:22]} 10. Nf3 {[%emt 0:8:35] B89: Sicilian: Velimirovic Attack.} Nxe4 {[%emt 0:4:49]} 11. Nxe4 {[%emt 0:0:15]} Qc7 {[%emt 0:1:19]} 12. Bd3 {[%emt 0:10:0] White is slightly better.} dxe4 {[%emt 0:0:17]} 13. Bxe4 {[%emt 0:0:5]} e5 {[%emt 0:8:45]} 14. Qc4 $146 {[%emt 0:2:59]} (14. h4 h6 15. Qc4 Be6 16. Bd5 Bxd5 17. Rxd5 Rac8 18. a3 Rfd8 19. Rhd1 a6 20. Rxd8+ Rxd8 21. Rxd8+ Qxd8 {1-0 Warakomski,T (2491)-Jerez Perez,A (2388) Krakow op 20th 2009 (6)} )Be6 {[%emt 0:3:52]} 15. Bd5 {[%emt 0:0:38]} Bxd5 {[%emt 0:0:6]} 16. Rxd5 {[%emt 0:0:10]} Rad8 {[%emt 0:4:13] [#]} 17. Rxe5 $1 {[%emt 0:4:42]} Rc8 {[%emt 0:9:16]} (17... Bf6 18. Rc5 )18. Re4 {[%emt 0:5:48] White has more active pieces.} (18. Rd5 {simplifies} a6 19. Qf4 Qxf4 20. Bxf4 Nb4 21. Rd2 )b5 {[%emt 0:2:37]} 19. Qe2 {[%emt 0:1:32]} (19. Qxb5 Nb4 20. Qa4 (20. Rxb4 $2 Qxc2# )(20. c3 Nxa2+ 21. Kd1 Rb8 $15 )Qb7 (20... Qxc2+ 21. Qxc2 Nxc2 22. Bf4 $16 )(20... Nxc2 21. Kb1 $11 )21. Rxb4 Bxb4 $11 )Nb4 {[%emt 0:15:49] [#]} 20. Kb1 $1 {[%emt 0:6:5]} f5 {[%emt 0:10:14]} 21. Re6 {[%emt 0:13:38]} (21. Bb6 {seems wilder.} Qxb6 22. Rxe7 Rxc2 23. Qe5 )Bf6 {[%emt 0:0:4] [#] ...Qa5 would now be deadly.} 22. c3 {[%emt 0:9:6]} (22. Qxb5 $2 Qxc2+ 23. Ka1 Bxb2# )({White should play} 22. Bd4 $1 $18 )Nd5 $16 {[%emt 0:6:15][%cal Yf6c3]} 23. Rd1 {[%emt 0:3:49]} (23. Qxb5 Nxc3+ (23... Qxc3 24. Rc1 $14 )24. bxc3 Rb8 $15 )Rfd8 {[%emt 0:0:4] A mistake that costs the game.} (23... Rcd8 $16 )24. Bg5 $18 {[%emt 0:4:54][%cal Ye3g5,Yg5f6,Yf6d4][%mdl 32]} (24. Qxb5 $2 Nxc3+ 25. bxc3 Rxd1+ 26. Kc2 Rdd8 $19 (26... Qxc3+ $2 27. Kxd1 Qa1+ 28. Ke2 $19 ))Qd7 {[%emt 0:20:45]} (24... Bxg5 25. Rxd5 (25. Nxg5 $2 Nf4 $19 )Bf6 26. Rxd8+ (26. Rxb5 Bxc3 27. Re7 Qc6 $16 )(26. Qxb5 Rb8 $18 )Qxd8 )25. Bxf6 {[%emt 0:3:30]} Nxc3+ {[%emt 0:0:52]} 26. bxc3 {[%emt 0:1:48]} (26. Bxc3 Qxd1+ 27. Qxd1 Rxd1+ 28. Kc2 Rf1 )Qxd1+ {[%emt 0:0:4]} 27. Qxd1 {[%emt 0:0:8]} Rxd1+ {[%emt 0:0:3]} 28. Kc2 {[%emt 0:0:10]} Rd7 {[%emt 0:0:50][%cal Yd1d7,Yd7b7,Yb7b2][%mdl 32]} 29. Bd4 {[%emt 0:7:0]} b4 {[%emt 0:0:10]} 30. Re5 {[%emt 0:1:46]} bxc3 {[%emt 0:0:33]} (30... f4 $142 31. Rb5 bxc3 )31. Rxf5 {[%emt 0:2:18]} (31. Bxc3 Rdc7 32. Re3 Rc6 )Rb7 {[%emt 0:0:16]} 32. Ra5 {[%emt 0:0:40]} (32. Bxc3 $2 Rbc7 33. Kb2 Rxc3 $19 )Rb2+ {[%emt 0:3:5]} 33. Kd3 {[%emt 0:1:3]} Rc7 {[%emt 0:1:35]} 34. Rxa7 {[%emt 0:2:27]} Rxa7 {[%emt 0:0:33]} 35. Bxa7 {[%emt 0:0:5]} c2 {[%emt 0:0:8]} 36. Kd2 {[%emt 0:2:12]} Rxa2 {[%emt 0:0:2]} 37. Be3 {[%emt 0:0:17]} Kf7 {[%emt 0:0:28]} 38. Nd4 {[%emt 0:0:29]} c1=Q+ {[%emt 0:0:20]} 39. Kxc1 {[%emt 0:0:6]} g5 {[%emt 0:0:9]} (39... Kf6 40. Nc2 g6 )40. h3 {[%emt 0:2:45]} (40. Bxg5 Rxf2 41. Nc2 Rxg2 $11 )Kg6 {[%emt 0:1:6]} (40... Kf6 {is a better defense.} 41. Kb1 Ra4 )41. Kb1 {[%emt 0:31:7]} Ra8 {[%emt 0:30:24]} 42. Nf3 {[%emt 0:2:50]} h6 {[%emt 0:0:6]} 43. Kc2 {[%emt 0:0:10]} Rd8 {[%emt 0:0:16]} 44. Bd2 {[%emt 0:1:10]} Rd6 {[%emt 0:1:48]} 45. Kd1 {[%emt 0:0:20]} Re6 {[%emt 0:0:18]} 46. Be3 {[%emt 0:0:10]} Ra6 {[%emt 0:0:4]} 47. Ke2 {[%emt 0:0:33]} Kf5 {[%emt 0:0:14]} 48. g4+ {[%emt 0:0:46]} Ke4 {[%emt 0:3:28]} 49. Nd2+ {[%emt 0:0:16]} Kd5 {[%emt 0:0:30]} 50. Kf3 {[%emt 0:0:6]} Ke5 {[%emt 0:0:14]} 51. Kg3 {[%emt 0:0:8]} Kf6 {[%emt 0:0:13]} 52. Nf3 {[%emt 0:1:34]} Ra5 {[%emt 0:0:10]} 53. h4 {[%emt 0:0:41]} gxh4+ {[%emt 0:0:3]} 54. Nxh4 {[%emt 0:0:52]} h5 {[%emt 0:0:7]} (54... Ra3 55. Kf3 Rb3 )55. g5+ {[%emt 0:0:34]} Ke5 {[%emt 0:0:13]} 56. Ng2 {[%emt 0:3:55]} Ra1 {[%emt 0:0:14]} 57. Nf4 {[%emt 0:0:0][%cal Yg5g6] Threatens to win with g6!.} Rg1+ {[%emt 0:0:0]} 58. Kh2 {[%emt 0:0:0]} Rg4 {[%emt 0:0:0]} 59. f3 {[%emt 0:0:0]} ({Less strong is} 59. Nxh5 Rh4+ 60. Kg3 Rxh5 $18 )Rh4+ {[%emt 0:0:0]} 60. Kg3 {[%emt 0:0:0] White is clearly winning.} Rh1 {[%emt 0:0:0]} 61. Kg2 {[%emt 0:0:0]} Rb1 {[%emt 0:0:0]} 62. Nxh5 {[%emt 0:0:0] Weighted Error Value: White=0.08 (flawless) /Black=0.45 Mistake: White=1 Black=6 Inaccurate: White=1 Black=4 OK: White=21 Black=15 Best: White=6 Black=2 Strong: White=1 --- Brilliant: White=1 ---} 1-0