[Event "LLM Chess"] [Site "https://lichess.org/bq5daHxM"] [Date "2025.03.19"] [Round "-"] [White "GPT-4o-mini"] [Black "o3-mini"] [Result "1-0"] [GameId "bq5daHxM"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "C70"] [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... b5 { [%eval 0.27] } { C70 Ruy Lopez: Morphy Defense, Caro Variation } 5. Bb3 { [%eval 0.26] } 5... Nf6 { [%eval 0.31] } 6. d4 { [%eval 0.22] } 6... exd4 { [%eval 0.76] } 7. O-O { [%eval 0.68] } 7... Na5 { [%eval 0.75] } 8. e5 { [%eval 0.49] } 8... d6?? { (0.49 → 5.24) Blunder. Nxb3 was best. } { [%eval 5.24] } (8... Nxb3 9. exf6) 9. exf6 { [%eval 5.08] } 9... gxf6 { [%eval 6.38] } 10. Qxd4 { [%eval 5.33] } 10... c5 { [%eval 6.19] } 11. Qd5 { [%eval 4.96] } 11... Qe7?! { (4.96 → 7.76) Inaccuracy. Be6 was best. } { [%eval 7.76] } (11... Be6 12. Re1 c4 13. Nd4 Be7 14. Nxe6 fxe6 15. Qxe6 Nc6 16. Nc3 Qd7 17. Qd5) 12. Re1 { [%eval 7.22] } 12... Nxb3 { [%eval 9.15] } 13. axb3 { [%eval 7.36] } 13... Bd7? { (7.36 → Mate in 2) Checkmate is now unavoidable. Rb8 was best. } { [%eval #2] } (13... Rb8 14. Rxe7+ Bxe7 15. Qd1 Rg8 16. Kh1 b4 17. Nbd2 Bb7 18. Nc4 Rd8 19. Bf4) 14. Rxe7+?! { (Mate in 2 → 10.81) Lost forced checkmate sequence. Qxa8+ was best. } { [%eval 10.81] } (14. Qxa8+ Bc8 15. Qxc8#) 14... Kxe7 { [%eval 10.29] } 15. Qxa8 { [%eval 9.9] } 15... Bh6 { [%eval 11.13] } 16. Qe4+ { [%eval 11.04] } 16... Be6 { [%eval 11.68] } 17. Bxh6 { [%eval 11.3] } 17... Kd7 { [%eval 13.6] } 18. Nc3 { [%eval 12.18] } 18... Kc7?! { (12.18 → Mate in 5) Checkmate is now unavoidable. Rg8 was best. } { [%eval #5] } (18... Rg8 19. Qb7+ Ke8 20. Qa8+ Kd7 21. Qxg8 b4 22. Ne4 f5 23. Nf6+ Kc7 24. Ne8+) 19. Bf4?! { (Mate in 5 → 13.64) Lost forced checkmate sequence. Nxb5+ was best. } { [%eval 13.64] } (19. Nxb5+ axb5 20. Ra7+ Kd8 21. Qb7 d5 22. Qc7+ Ke8 23. Qe7#) 19... Rg8?! { (13.64 → Mate in 6) Checkmate is now unavoidable. a5 was best. } { [%eval #6] } (19... a5 20. Bxd6+ Kb6 21. Rxa5 Bd5 22. Rxb5+ Kc6 23. Qxd5+ Kd7 24. Bg3+ Ke8) 20. Rxa6 { [%eval #5] } 20... Bd5 { [%eval #4] } 21. Qxd5 { [%eval #3] } 21... Rd8 { [%eval #2] } 22. Nxb5+ { [%eval #2] } 22... Kc8 { [%eval #2] } 23. Qc6+ { [%eval #1] } 23... Kb8 { [%eval #1] } 24. Qb6+ { [%eval #1] } 24... Kc8 { [%eval #1] } 25. Qc7# { White wins. } 1-0