[Event "LLM Chess"] [Site "https://lichess.org/BY7I3PwT"] [Date "2025.03.19"] [Round "-"] [White "DeepSeek V3"] [Black "Claude 3.7 Sonnet"] [Result "1/2-1/2"] [GameId "BY7I3PwT"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "C99"] [Opening "Ruy Lopez: Closed, Chigorin Defense, Panov System"] [Termination "Unknown"] [Annotator "lichess.org"] 1. e4 { [%eval 0.18] } 1... e5 { [%eval 0.21] } 2. Nf3 { [%eval 0.13] } 2... Nc6 { [%eval 0.21] } 3. Bb5 { [%eval 0.08] } 3... a6 { [%eval 0.21] } 4. Ba4 { [%eval 0.12] } 4... Nf6 { [%eval 0.18] } 5. O-O { [%eval 0.13] } 5... Be7 { [%eval 0.24] } 6. Re1 { [%eval 0.24] } 6... b5 { [%eval 0.14] } 7. Bb3 { [%eval 0.11] } 7... O-O { [%eval 0.26] } 8. c3 { [%eval 0.36] } 8... d6 { [%eval 0.35] } 9. h3 { [%eval 0.33] } 9... Na5 { [%eval 0.51] } 10. Bc2 { [%eval 0.45] } 10... c5 { [%eval 0.36] } 11. d4 { [%eval 0.42] } 11... cxd4 { [%eval 0.43] } 12. cxd4 { [%eval 0.45] } 12... Qc7 { [%eval 0.59] } 13. Nbd2 { [%eval 0.34] } { C99 Ruy Lopez: Closed, Chigorin Defense, Panov System } 13... Bd7 { [%eval 0.4] } 14. Nb3 { [%eval 0.12] } 14... Nxb3 { [%eval 0.51] } 15. axb3 { [%eval 0.27] } 15... Rfc8 { [%eval 0.34] } 16. Bd3 { [%eval 0.35] } 16... Qb7 { [%eval 0.77] } 17. Qe2?! { (0.77 → 0.16) Inaccuracy. dxe5 was best. } { [%eval 0.16] } (17. dxe5) 17... Rc7?! { (0.16 → 1.24) Inaccuracy. exd4 was best. } { [%eval 1.24] } (17... exd4) 18. Bg5?! { (1.24 → 0.55) Inaccuracy. dxe5 was best. } { [%eval 0.55] } (18. dxe5) 18... h6 { [%eval 0.41] } 19. Bh4 { [%eval 0.32] } 19... Rac8?! { (0.32 → 1.10) Inaccuracy. Re8 was best. } { [%eval 1.1] } (19... Re8 20. Bg3) 20. Rac1?? { (1.10 → -5.02) Blunder. Nxe5 was best. } { [%eval -5.02] } (20. Nxe5 Be6) 20... Rxc1 { [%eval -4.88] } 21. Rxc1 { [%eval -4.88] } 21... Rxc1+ { [%eval -5.01] } 22. Kh2 { [%eval -4.77] } 22... Qc8 { [%eval -4.68] } 23. Bxf6 { [%eval -5.54] } 23... Bxf6 { [%eval -5.64] } 24. b4 { [%eval -5.97] } 24... exd4 { [%eval -5.96] } 25. Qd2 { [%eval -6.03] } 25... Rc7 { [%eval -6.24] } 26. Nxd4 { [%eval -7.25] } 26... Bxd4 { [%eval -7.03] } 27. Qf4 { [%eval -9.63] } 27... Be5 { [%eval -9.25] } 28. Qxe5 { [%eval -10.08] } 28... dxe5 { [%eval -9.75] } 29. Bxb5? { (-9.75 → Mate in 7) Checkmate is now unavoidable. g3 was best. } { [%eval #-7] } (29. g3 Be6 30. Be2 Rd7 31. Kg2 Rd8 32. g4 Kh8 33. g5 hxg5 34. Kg1 Kg8) 29... axb5 { [%eval #-6] } 30. f3 { [%eval #-5] } 30... Rc2 { [%eval #-4] } 31. Kg3 { [%eval #-4] } 31... Kf8 { [%eval #-4] } 32. f4 { [%eval #-4] } 32... exf4+ { [%eval #-4] } 33. Kxf4 { [%eval #-4] } 33... Ke7 { [%eval #-4] } 34. Ke3 { [%eval #-4] } 34... Rc4 { [%eval #-5] } 35. Kd3 { [%eval #-5] } 35... Rxe4 { [%eval #-10] } 36. h4 { [%eval #-3] } 36... Rg4 { [%eval #-4] } 37. h5 { [%eval #-4] } 37... f6 { [%eval #-4] } 38. Kd2 { [%eval #-4] } 38... Kd6 { [%eval #-4] } 39. g3 { [%eval #-4] } 39... Be6 { [%eval #-4] } 40. b3 { [%eval #-4] } 40... Bxb3 { [%eval #-4] } 41. Kd3 { [%eval #-3] } 41... Bc4+ { [%eval #-4] } 42. Ke3 { [%eval #-4] } 42... Bd5 { [%eval #-3] } 43. Kd3 { [%eval #-3] } 43... Ke5 { [%eval #-3] } 44. Ke3 { [%eval #-3] } 44... Kf5 { [%eval #-4] } 45. Kd3 { [%eval #-3] } 45... Kg5 { [%eval #-4] } 46. Ke3 { [%eval #-4] } 46... Kxh5 { [%eval #-4] } 47. Kf2 { [%eval #-3] } 47... Kg5 { [%eval #-4] } 48. Ke3 { [%eval #-4] } 48... Kf5 { [%eval #-4] } 49. Kf2 { [%eval #-3] } 49... Ke4 { [%eval #-4] } 50. Ke2 { [%eval #-3] } 50... Bb3 { [%eval #-3] } 51. Kd2 { [%eval #-2] } 51... Ke5 { [%eval #-3] } 52. Ke3 { [%eval #-3] } 52... Bc2 { [%eval #-4] } 53. Kf3 { [%eval #-4] } 53... Kd4 { [%eval #-4] } 54. Kf2 { [%eval #-4] } 54... Kd3 { [%eval #-4] } 55. Ke1 { [%eval #-3] } 55... Bd1 { [%eval #-3] } 56. Kf1 { [%eval #-3] } 56... Ke3 { [%eval #-3] } 57. Kg2 { [%eval #-3] } 57... Ke2 { [%eval #-3] } 58. Kh2 { [%eval #-3] } 58... Kf3 { [%eval #-2] } 59. Kh3 { [%eval #-2] } 59... Kf2 { [%eval #-2] } 60. Kh2 { [%eval #-2] } 60... g5 { [%eval #-2] } 61. Kh3 { [%eval #-1] } 61... Bc2 { [%eval #-2] } 62. Kh2 { [%eval #-2] } 62... Kf1 { [%eval #-2] } 63. Kh1 { [%eval #-2] } 63... Kf2 { [%eval #-2] } 64. Kh2 { [%eval #-2] } 64... Kf3 { [%eval #-3] } 65. Kh3 { [%eval #-1] } 65... Kf2?? { (Mate in 1 → 0.00) Lost forced checkmate sequence. Rh4# was best. } { [%eval 0.0] } (65... Rh4#) 66. Kh2 { [%eval #-2] } 1/2-1/2