[Event "RIVIERA CHESS CLUB MASTER Arena"] [Site "https://lichess.org/FcMEhKEy"] [Date "2020.05.01"] [White "NaotoMatsui"] [Black "HER_RIB"] [Result "0-1"] [UTCDate "2020.05.01"] [UTCTime "16:31:14"] [WhiteElo "1901"] [BlackElo "2243"] [WhiteRatingDiff "-1"] [BlackRatingDiff "+2"] [Variant "Standard"] [TimeControl "300+2"] [ECO "A00"] [Opening "Grob Opening"] [Termination "Normal"] [Annotator "lichess.org"] 1. g4?! { (0.15 → -0.93) Inaccuracy. Nf3 was best. } { A00 Grob Opening } (1. Nf3 d5 2. b3 Nf6 3. Bb2 c6 4. c4 Bg4 5. g3 Bh5) 1... Nc6 2. Nc3 d5 3. Bg2 d4 4. Nb5 Bxg4 5. c3 e5 6. cxd4 exd4 7. Nf3 Nf6?! { (-2.10 → -1.37) Inaccuracy. Bc5 was best. } (7... Bc5 8. O-O) 8. Qa4 Bc5?! { (-1.46 → -0.64) Inaccuracy. d3 was best. } (8... d3) 9. b4?? { (-0.64 → -3.34) Blunder. Nbxd4 was best. } (9. Nbxd4 Bd7 10. Qc4 Qe7 11. O-O Nxd4 12. Nxd4 O-O 13. d3 Bd6 14. Nf3 Rac8 15. Re1 Ng4) 9... Bxb4?? { (-3.34 → -0.95) Blunder. Bb6 was best. } (9... Bb6 10. h3) 10. Nbxd4 Bd6 11. Nxc6 bxc6 12. Nd4 O-O 13. Nxc6 Qe8 14. Qc4 Bd7?! { (-0.37 → 0.43) Inaccuracy. Qd7 was best. } (14... Qd7 15. Bb2) 15. O-O? { (0.43 → -0.84) Mistake. Bb2 was best. } (15. Bb2 Qe6 16. Rc1 Rae8 17. Qxe6 fxe6 18. Ne5 Rb8 19. Bd4 Ba3 20. Nxd7 Nxd7 21. Rd1 c5) 15... Bxc6 16. Bxc6 Qe5 17. d4?? { (-1.18 → Mate in 1) Checkmate is now unavoidable. f4 was best. } (17. f4) 17... Qxh2# { Black wins by checkmate. } 0-1