[Event "K-12 Coast to Coast II"] [Site "https://lichess.org/Ioe8M1ZP"] [Date "2021.09.19"] [White "NatWill"] [Black "Sasha-zlodorev"] [Result "1-0"] [UTCDate "2021.09.19"] [UTCTime "16:35:32"] [WhiteElo "2161"] [BlackElo "2309"] [WhiteRatingDiff "+16"] [BlackRatingDiff "-7"] [Variant "Standard"] [TimeControl "600+5"] [ECO "C41"] [Opening "Philidor Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 d6 { C41 Philidor Defense } 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Be7 6. Bf4 O-O 7. Qd2 a6 8. O-O-O b5 9. f3 c5 10. Nf5 Bxf5 11. exf5 b4? { (0.74 → 2.20) Mistake. Nc6 was best. } (11... Nc6) 12. Nd5 Nxd5 13. Qxd5 Ra7 14. Bc4 Nd7 15. Bxd6 Bxd6? { (2.27 → 4.06) Mistake. Nb6 was best. } (15... Nb6 16. Qxc5 Bxd6 17. Rxd6 Qg5+ 18. Kb1 Nxc4 19. Qxc4 Qxg2 20. Rhd1 a5 21. Qf4 Raa8 22. f6) 16. Qxd6 Qg5+ 17. Kb1 Qxf5?! { (4.50 → 6.56) Inaccuracy. Qf6 was best. } (17... Qf6 18. Rd5 Qh4 19. b3 Nf6 20. Rdd1 Qf2 21. Rd2 Qe3 22. Re2 Qc3 23. Qe5 Qxe5 24. Rxe5) 18. Rd5?! { (6.56 → 4.33) Inaccuracy. Rhe1 was best. } (18. Rhe1 g6 19. Re7 Nb6 20. Bd3 Nc8 21. Bxf5 Nxd6 22. Rxa7 Nxf5 23. Re1 c4 24. Kc1 Nh4) 18... Qg5?? { (4.33 → 12.10) Blunder. Qf6 was best. } (18... Qf6 19. Qxf6 gxf6 20. Rhd1 Nb6 21. Rxc5 Nxc4 22. Rxc4 a5 23. b3 Re8 24. Kb2 Rae7 25. Rd5) 19. Rxg5 a5 20. Rd1 a4?! { (14.45 → Mate in 7) Checkmate is now unavoidable. g6 was best. } (20... g6 21. Qxd7) 21. Qxd7?! { (Mate in 7 → 14.62) Lost forced checkmate sequence. Qh6 was best. } (21. Qh6 g6 22. Rd6 Ne5 23. Rxe5 Rc8 24. Rxg6+ hxg6 25. Qxg6+ Kf8 26. Qh6+ Kg8 27. Rg5#) 21... Rxd7 22. Rxd7 b3 23. Rxf7 bxa2+ 24. Kxa2 Rxf7 25. Bxf7+ Kxf7 26. Rxc5 a3 27. Ra5 axb2 28. Kxb2 h6 29. Ra6 g5 30. Kc3 g4?! { (63.83 → Mate in 13) Checkmate is now unavoidable. h5 was best. } (30... h5 31. h4) 31. Kd4?! { (Mate in 13 → 68.37) Lost forced checkmate sequence. fxg4 was best. } (31. fxg4 Kg7 32. h4 h5 33. gxh5 Kg8 34. h6 Kf7 35. g4 Kg8 36. g5 Kf8 37. g6 Ke7) 31... gxf3 32. gxf3 h5 33. h4 Kg7 34. Ke5 Kf7 35. Kf5?! { (Mate in 6 → 68.50) Lost forced checkmate sequence. Ra7+ was best. } (35. Ra7+ Ke8 36. Kd6 Kf8 37. Ke6 Kg8 38. Kf6 Kh8 39. Kg6 Kg8 40. Ra8#) 35... Kg7?! { (68.50 → Mate in 5) Checkmate is now unavoidable. Ke7 was best. } (35... Ke7 36. Ra5 Kd7 37. Kf6 Kc6 38. Rxh5 Kb7 39. Rg5 Kb6 40. h5 Kc7 41. h6 Kb7 42. h7) 36. Kg5 Kf7 37. Kxh5 Kg7 38. Kg5 Kf7 39. h5 Kg7 40. h6+ Kf7 41. Ra7+ Kg8 42. Kg6 Kf8 43. h7 Ke8 44. h8=Q# { White wins by checkmate. } 1-0