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[Event "Koltanowski Arena"] [Site "http://chess-academy.net/87kmv68v"] [Date "2025.03.06"] [Round "-"] [White "Matheo9"] [Black "Iaroslav22"] [Result "1-0"] [UTCDate "2025.03.06"] [UTCTime "17:15:22"] [WhiteElo "1153"] [BlackElo "1068"] [WhiteRatingDiff "+15"] [BlackRatingDiff "-30"] [Variant "Standard"] [TimeControl "600+0"] [ECO "A00"] [Opening "Polish Opening"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. b4?! { (0.15 → -0.55) Inaccuracy. Best move was e4. } { A00 Polish Opening } (1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6) 1... a5?! { (-0.55 → 0.28) Inaccuracy. Best move was d5. } (1... d5 2. Nf3 Nf6 3. e3 Bf5 4. Bb2 e6 5. c4 Bxb4 6. cxd5) 2. bxa5? { (0.28 → -1.02) Mistake. Best move was b5. } (2. b5) 2... Rxa5? { (-1.02 → 0.13) Mistake. Best move was e5. } (2... e5) 3. a4? { (0.13 → -0.87) Mistake. Best move was d4. } (3. d4 d5 4. Bd2 Ra8 5. c4 c5 6. e3 cxd4 7. exd4 Nf6 8. Nf3 e6 9. Nc3 Bb4) 3... b6? { (-0.87 → 0.13) Mistake. Best move was e5. } (3... e5 4. e3 d5 5. d4 exd4 6. exd4 Nf6 7. Bd2 Ra8 8. Nf3 Bd6 9. Bd3 Qe7+ 10. Qe2) 4. Bb2?! { (0.13 → -0.38) Inaccuracy. Best move was d4. } (4. d4 Nf6 5. e3 Bb7 6. Nf3 e6 7. Bd3 Be7 8. O-O O-O 9. Nbd2 c5 10. Bb5 Nc6) 4... b5? { (-0.38 → 0.95) Mistake. Best move was Nf6. } (4... Nf6 5. Nf3) 5. Bc3? { (0.95 → -0.91) Mistake. Best move was e3. } (5. e3 bxa4) 5... Bb7?? { (-0.91 → 6.69) Blunder. Best move was Rxa4. } (5... Rxa4 6. Rxa4 bxa4 7. Bb2 d6 8. c4 Bd7 9. Nc3 Nf6 10. e3 e5 11. Nf3 Be7 12. d4) 6. Bxa5 Na6? { (6.20 → 8.21) Mistake. Best move was bxa4. } (6... bxa4) 7. Bc3? { (8.21 → 6.07) Mistake. Best move was axb5. } (7. axb5 Nb8 8. c4 e6 9. d4 d6 10. Nf3 Nf6 11. e3 Be4 12. h4 Bg6 13. Ng1 Bh5) 7... e5? { (6.07 → 8.71) Mistake. Best move was b4. } (7... b4 8. Bb2) 8. axb5 e4? { (8.45 → 12.20) Mistake. Best move was Nc5. } (8... Nc5 9. Bxe5 Nf6 10. e3 Nce4 11. Nc3 Nxc3 12. Bxc3 Bc5 13. Nf3 O-O 14. Bd3 Qe7 15. O-O) 9. Na3? { (12.20 → 7.90) Mistake. Best move was bxa6. } (9. bxa6 Ba8) 9... Bxa3? { (7.90 → 15.00) Mistake. Best move was Nc5. } (9... Nc5 10. Nc4 Ne6 11. e3 Be7 12. Ne2 Nh6 13. Ng3 O-O 14. Be2 f5 15. O-O f4 16. exf4) 10. Rxa3 e3 11. dxe3 Qg5 12. Qd2 Qh4 13. g3 Qh3 14. Nxh3 Bxh1 15. Ng1 Ba8 16. Rxa6 Be4 17. Ra7 d5 18. Rxc7 f6?! { (32.87 → Mate in 5) Checkmate is now unavoidable. Best move was Nf6. } (18... Nf6) 19. Rxg7?! { (Mate in 5 → Mate in 8) Not the best checkmate sequence. Best move was Bb4. } (19. Bb4 g6 20. Qd4 h5 21. Qa7 Ne7 22. Rxe7+ Kf8 23. Qa8#) 19... Nh6 20. Bxf6 Rf8 21. Bh4?! { (Mate in 3 → Mate in 25) Not the best checkmate sequence. Best move was Re7+. } (21. Re7+ Kd8 22. Qa5+ Kc8 23. Qc7#) 21... Bxc2 22. Qxc2 Rxf2 23. Bh3?! { (Mate in 1 → Mate in 4) Not the best checkmate sequence. Best move was Qc8#. } (23. Qc8#) 23... Rf1+ 24. Kxf1 Nf7 25. Rxh7?! { (Mate in 1 → Mate in 2) Not the best checkmate sequence. Best move was Rg8#. } (25. Rg8#) 25... Ne5 26. Qc5?! { (Mate in 1 → Mate in 1) Not the best checkmate sequence. Best move was Qc8#. } { Black resigns. } (26. Qc8#) 1-0