[Event "Antiwiskundeolympiade"] [Site "https://lichess.org/SSaZDBXb"] [Date "2022.01.19"] [White "Geraldine2903-04"] [Black "X150808"] [Result "0-1"] [UTCDate "2022.01.19"] [UTCTime "14:34:59"] [WhiteElo "1375"] [BlackElo "830"] [WhiteRatingDiff "-445"] [BlackRatingDiff "+104"] [Variant "Standard"] [TimeControl "600+3"] [ECO "B01"] [Opening "Scandinavian Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 d5 { B01 Scandinavian Defense } 2. Bd3? { (0.82 → -0.45) Mistake. exd5 was best. } (2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bf5 6. Bd2 c6) 2... c6 3. Qh5?? { (-0.02 → -1.72) Blunder. Qe2 was best. } (3. Qe2 e5 4. exd5 Bd6 5. Nc3 Nf6 6. dxc6 Nxc6 7. b3 O-O) 3... g6?! { (-1.72 → -0.93) Inaccuracy. Nf6 was best. } (3... Nf6 4. Qe2 e5 5. c4 Bd6 6. cxd5 cxd5 7. Nc3 dxe4 8. Nxe4) 4. Qe5?! { (-0.93 → -1.87) Inaccuracy. Qe2 was best. } (4. Qe2) 4... f6 5. Qe6?? { (-1.30 → -12.61) Blunder. Qg3 was best. } (5. Qg3) 5... Bxe6 6. Nf3 h5 7. Nh4 g5 8. Ng6 Bg7 9. b4 a6 10. a4 b5 11. h3 Rh6 12. Nxe7 Nxe7 13. Be2 dxe4 14. c3 h4 15. Na3 Bd7 16. g4 f5 17. gxf5 Nxf5 18. a5 Be5 19. Rg1 Rh5 20. Rg4 Rh6 21. f4 Bf6 22. fxg5 Bxg5 23. Rxg5 Qxg5 24. Nc2 Rg6 25. Bxb5?! { (-17.08 → Mate in 5) Checkmate is now unavoidable. Bg4 was best. } (25. Bg4 Kf8) 25... Qg1+?! { (Mate in 5 → -26.67) Lost forced checkmate sequence. axb5 was best. } (25... axb5 26. Kd1 Qh5+ 27. Ke1 Qf3 28. d3 Rg1+ 29. Kd2 Qxd3#) 26. Ke2?! { (-26.67 → Mate in 1) Checkmate is now unavoidable. Bf1 was best. } (26. Bf1 Ng3) 26... Ng3# { Black wins by checkmate. } 0-1