CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/LvEPcAba"] [Date "2026.09.23"] [White "Lucas4"] [Black "Caleb5"] [Result "0-1"] [UTCDate "2026.09.23"] [UTCTime "14:05:15"] [WhiteElo "1305"] [BlackElo "1458"] [WhiteRatingDiff "-26"] [BlackRatingDiff "+35"] [BlackTitle "NM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C21"] [Opening "Center Game"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. d4?! { (0.50 → -0.29) Inaccuracy. Nf3 was best. } (2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6) 2... exd4 3. Qxd4 { C21 Center Game } d5?? { (-0.07 → 1.91) Blunder. Nc6 was best. } (3... Nc6 4. Qc4 Nf6 5. Nc3 Bb4 6. Bd2 O-O 7. O-O-O a6 8. f3 b5 9. Qe2 d5 10. Nxd5) 4. Qd1?? { (1.91 → -0.63) Blunder. exd5 was best. } (4. exd5 Nf6 5. Nc3 Nbd7 6. Bb5 Bd6 7. Bf4 O-O 8. Bxd6 cxd6 9. Nge2 a6 10. Bd3 Nc5) 4... dxe4? { (-0.63 → 0.56) Mistake. Nf6 was best. } (4... Nf6 5. exd5 Qxd5 6. Qxd5 Nxd5 7. Nf3 Nc6 8. Bc4 Ndb4 9. Na3 Bf5 10. O-O Be7 11. Bb3) 5. f3?? { (0.56 → -2.65) Blunder. Qxd8+ was best. } (5. Qxd8+ Kxd8 6. Nc3 f5 7. f3 Nf6 8. Bg5 Be7 9. O-O-O+ Bd7 10. fxe4 Nxe4 11. Nxe4 fxe4) 5... exf3? { (-2.65 → -1.01) Mistake. Bb4+ was best. } (5... Bb4+ 6. Bd2 Qh4+ 7. g3 Qe7 8. Qe2 Nc6 9. Qxe4 Bf5 10. Qxe7+ Ngxe7 11. Bxb4 Nxb4 12. Na3) 6. Qxf3? { (-1.01 → -2.38) Mistake. Qxd8+ was best. } (6. Qxd8+ Kxd8) 6... Be6?! { (-2.38 → -1.41) Inaccuracy. Nc6 was best. } (6... Nc6 7. Bb5) 7. Qd1?? { (-1.41 → -7.84) Blunder. Nc3 was best. } (7. Nc3) 7... Bg4?? { (-7.84 → 5.65) Blunder. Qh4+ was best. } (7... Qh4+ 8. g3 Qe4+ 9. Qe2 Qxh1 10. Nf3 Nc6 11. Bf4 O-O-O 12. Nbd2 Nd4 13. Nxd4 Rxd4 14. O-O-O) 8. Qxd8+?? { (5.65 → -1.00) Blunder. Qxg4 was best. } (8. Qxg4 Qe7+ 9. Qe2 Nc6 10. Bd2 O-O-O 11. Nc3 Rxd2 12. Qxe7 Ngxe7 13. Kxd2 g6 14. Bd3 Nb4) 8... Kxd8 9. Kd2?? { (-1.19 → -3.00) Blunder. Nc3 was best. } (9. Nc3 Bd6) 9... Bc8? { (-3.00 → -1.75) Mistake. Nf6 was best. } (9... Nf6 10. Nc3 Nbd7 11. h3 Bh5 12. Bd3 Bd6 13. Nge2 Bg6 14. Rf1 c6 15. Nf4 Kc7 16. Nxg6) 10. Bd3?! { (-1.75 → -2.49) Inaccuracy. Nf3 was best. } (10. Nf3) 10... f5? { (-2.49 → -0.88) Mistake. Nf6 was best. } (10... Nf6 11. Nc3) 11. Be2? { (-0.88 → -2.25) Mistake. Nf3 was best. } (11. Nf3 Nc6 12. Re1 Bd7 13. c3 h6 14. Kc2 Bd6 15. Nbd2 Nf6 16. Nc4 Re8 17. Be3 g5) 11... f4?? { (-2.25 → -0.33) Blunder. Nc6 was best. } (11... Nc6 12. Nf3) 12. Nf3?! { (-0.33 → -0.91) Inaccuracy. Nc3 was best. } (12. Nc3) 12... g5?? { (-0.91 → 2.60) Blunder. Nf6 was best. } (12... Nf6 13. Nc3 Bd6 14. Nb5 Nc6 15. Kd1 Ne4 16. Rf1 Rf8 17. Nxd6 cxd6 18. Nd2 Nc5 19. Nc4) 13. Ke1?! { (2.60 → 1.46) Inaccuracy. Nxg5 was best. } (13. Nxg5 Nh6) 13... g4?! { (1.46 → 2.27) Inaccuracy. Bb4+ was best. } (13... Bb4+ 14. Nc3 Nf6 15. Nxg5 Re8 16. Bxf4 Bxc3+ 17. bxc3 Bg4 18. Nf3 Nbd7 19. h3 Bh5 20. Rd1) 14. g3?? { (2.27 → -4.89) Blunder. Ng5 was best. } (14. Ng5 f3 15. gxf3 Ke8 16. fxg4 Nf6 17. h3 h5 18. gxh5 Nc6 19. Nc3 Nd4 20. Nb5 Nxe2) 14... gxf3 15. gxf4? { (-4.65 → -9.64) Mistake. Bxf3 was best. } (15. Bxf3 Bd6) 15... Bh6?! { (-9.64 → -5.29) Inaccuracy. fxe2 was best. } (15... fxe2 16. Nc3 Nf6 17. Bd2 Bc5 18. Na4 Bd4 19. Bc3 Nc6 20. Bxd4 Nxd4 21. Rb1 Ne4) 16. Bxf3 Bxf4?? { (-5.62 → 3.97) Blunder. a5 was best. } (16... a5) 17. Bd1?? { (3.97 → -10.63) Blunder. Bxf4 was best. } (17. Bxf4 Ne7) 17... Bxc1 18. Kf2 Nh6 19. Be2 Ng4+ 20. Kg2 Nxh2 21. Rxh2 h5?! { (-12.59 → -6.37) Inaccuracy. Bxb2 was best. } (21... Bxb2) 22. Rh1 h4?? { (-8.68 → -1.73) Blunder. Bxb2 was best. } (22... Bxb2 23. Nc3) 23. Rxc1 h3+?! { (-1.57 → -0.62) Inaccuracy. c6 was best. } (23... c6 24. Kh2) 24. Kf1?? { (-0.62 → -3.99) Blunder. Kh2 was best. } (24. Kh2 Be6 25. Rg1 Nd7 26. Nc3 c6 27. Bg4 Bxg4 28. Rxg4 Kc7 29. Rg7 Rag8 30. Rxg8 Rxg8) 24... h2? { (-3.99 → -2.02) Mistake. Bd7 was best. } (24... Bd7 25. Nc3 h2 26. Kg2 Bc6+ 27. Bf3 Rg8+ 28. Kf2 Rf8 29. Rd1+ Nd7 30. Rd3 Kc8 31. Nd5) 25. Kf2?? { (-2.02 → -6.98) Blunder. Kg2 was best. } (25. Kg2 Bd7) 25... h1=Q 26. Rxh1 Rxh1 27. Ke3 c5 28. Nd2 c4?? { (-9.23 → 1.50) Blunder. Rxa1 was best. } (28... Rxa1 29. Nb3 Rxa2 30. Nxc5 Rxb2 31. Kd2 Kc7 32. Nd3 Rb6 33. c4 a5 34. Nf4 Kd6 35. Kc3) 29. Rxh1 c3 30. bxc3 Nc6 31. Kf2?! { (1.27 → 0.45) Inaccuracy. Ne4 was best. } (31. Ne4 Rb8 32. Rh8+ Kc7 33. Rh7+ Kb6 34. Nd6 a6 35. Bd3 Be6 36. c4 Bc8 37. Kd2 Bg4) 31... Ne5 32. Bc4?! { (0.82 → 0.28) Inaccuracy. Ne4 was best. } (32. Ne4 Rb8) 32... Nxc4 33. Nxc4 Be6?? { (0.32 → 5.71) Blunder. Kc7 was best. } (33... Kc7 34. Rh7+ Kc6 35. Rh8 b6 36. Ke3 Bb7 37. Rh6+ Kc5 38. Nb2 Re8+ 39. Kd2 Re7 40. a4) 34. Nb2?? { (5.71 → 0.13) Blunder. Rh8+ was best. } (34. Rh8+ Kc7 35. Rxa8 a6 36. Ne3 Bxa2 37. c4 Kb6 38. Ke2 Kc5 39. Kd3 Bb1 40. Kc3 Ba2) 34... Bxa2?? { (0.13 → 4.92) Blunder. Kc7 was best. } (34... Kc7) 35. Nd1?? { (4.92 → -0.22) Blunder. Rh8+ was best. } (35. Rh8+ Kc7 36. Rxa8 Bb1 37. Ke3 Bxc2 38. Rxa7 Kb6 39. Ra8 Kc5 40. Rc8+ Kd5 41. Rc7 b5) 35... Bc4?? { (-0.22 → 5.38) Blunder. Kc7 was best. } (35... Kc7 36. Nb2 Be6 37. Ra1 a6 38. Ke3 Rg8 39. Rh1 Rg3+ 40. Kd2 Rg2+ 41. Kd1 Bg4+ 42. Kc1) 36. Re1?? { (5.38 → 0.00) Blunder. Rh8+ was best. } (36. Rh8+ Kc7 37. Rxa8 a6 38. Ke3 b6 39. Kd4 Kb7 40. Rh8 Ba2 41. Ne3 Bb1 42. Ke5 b5) 36... a5 37. Nb2 a4?? { (-0.11 → 4.23) Blunder. Bf7 was best. } (37... Bf7 38. Ra1) 38. Re6?? { (4.23 → -12.40) Blunder. Nxc4 was best. } (38. Nxc4) 38... a3?? { (-12.40 → -0.46) Blunder. Bxe6 was best. } (38... Bxe6) 39. Rd6+ Ke8?! { (-0.97 → -0.10) Inaccuracy. Kc7 was best. } (39... Kc7 40. Nxc4 a2 41. Rd1 a1=Q 42. Rxa1 Rxa1 43. Ke3 Kc6 44. Nd2 Kb5 45. Kd4 Rc1 46. Kd3) 40. Re6+?? { (-0.10 → -65.09) Blunder. Nxc4 was best. } (40. Nxc4 a2 41. Rd1 a1=Q 42. Rxa1 Rxa1 43. Nd6+ Kd7 44. Nxb7 Kc6 45. Nd8+ Kd5 46. c4+ Kxc4) 40... Kd8?? { (-65.09 → -0.32) Blunder. Bxe6 was best. } (40... Bxe6 41. Nd3 a2 42. Nc5 Bg8 43. Ne4 a1=Q 44. Kg2 Qb2 45. Kg3 Ke7 46. Nf2 Qxc3+ 47. Kh4) 41. Rd6+ Ke8?! { (-0.75 → -0.10) Inaccuracy. Kc7 was best. } (41... Kc7 42. Nxc4 a2 43. Rd1 a1=Q 44. Rxa1 Rxa1 45. Ke3 Kc6 46. Nd2 Kb5 47. Kd4 Rc1 48. Kd3) 42. Re6+?? { (-0.10 → -65.09) Blunder. Nxc4 was best. } (42. Nxc4 a2 43. Rd1 a1=Q 44. Rxa1 Rxa1 45. Nd6+ Kd7 46. Nxb7 Kc6 47. Nd8+ Kd5 48. Nf7 Kc4) 42... Kf7?! { (-65.09 → -5.29) Inaccuracy. Bxe6 was best. } (42... Bxe6 43. Nd3 a2 44. Nc5 Bg8 45. Ne4 a1=Q 46. Kg2 Qb2 47. Kg3 Ke7 48. Nf2 Qxc3+ 49. Kh4) 43. Re5?! { (-5.29 → -66.97) Inaccuracy. Rd6 was best. } (43. Rd6) 43... axb2 44. Rf5+ Ke7 45. Re5+?! { (-68.24 → Mate in 14) Checkmate is now unavoidable. Rc5 was best. } (45. Rc5 b1=Q) 45... Kd7?! { (Mate in 14 → -65.09) Lost forced checkmate sequence. Kf6 was best. } (45... Kf6 46. Re1 Ra1 47. Re8 b1=Q 48. Rf8+ Ke7 49. Ke3 Qe1+ 50. Kd4 Ra4 51. Rf7+ Bxf7+ 52. c4) 46. Rg5?! { (-65.09 → Mate in 12) Checkmate is now unavoidable. Re4 was best. } (46. Re4 b5 47. Rd4+ Kc6 48. Rd1 Ra1 49. Re1 Kd7 50. Rxa1 bxa1=Q 51. Ke3 Qxc3+ 52. Ke4 Qxc2+) 46... b1=Q 47. Kg2 Qxc2+ 48. Kg1 Qxc3 49. Re5 Qxe5 50. Kf2 Qh5 51. Ke1 Ra3 52. Kd2 Qh2+ 53. Ke1 Ra1# { Black wins by checkmate. } 0-1