[Event "Colegas December marathon Team Battle"] [Site "https://lichess.org/d59OBCj8"] [Date "2022.12.13"] [White "oberschlumpf"] [Black "Pinigin"] [Result "1-0"] [UTCDate "2022.12.13"] [UTCTime "10:57:30"] [WhiteElo "2248"] [BlackElo "1662"] [WhiteRatingDiff "+0"] [BlackRatingDiff "-1"] [WhiteTitle "NM"] [Variant "Standard"] [TimeControl "180+0"] [ECO "D26"] [Opening "Queen's Gambit Accepted: Normal Variation, Traditional System"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 { D26 Queen's Gambit Accepted: Normal Variation, Traditional System } 5. Bxc4 Bd7?! { (0.25 → 1.08) Inaccuracy. a6 was best. } (5... a6 6. O-O c5 7. dxc5 Bxc5 8. Qxd8+ Kxd8 9. Nc3 b5 10. Be2) 6. O-O Bb4?! { (0.86 → 1.56) Inaccuracy. c5 was best. } (6... c5 7. Nc3 Nc6 8. a3 Rc8 9. Ba2 cxd4 10. exd4 Be7 11. Re1) 7. Ne5 O-O 8. Qb3 Be7?? { (1.91 → 6.25) Blunder. a5 was best. } (8... a5 9. a3) 9. Qxb7 Bc6 10. Nxc6 Nxc6 11. Qxc6 Nd5 12. Nc3 Bd6 13. Nxd5 exd5 14. Qxd5 Qh4 15. g3 Qh6 16. b3 Rae8 17. a4 Re6 18. Ba3 Bxa3 19. Rxa3 Rd6 20. Qg2 Kh8 21. Raa1 f5 22. Rac1 Rff6? { (8.82 → Mate in 3) Checkmate is now unavoidable. c6 was best. } (22... c6 23. Bd3) 23. Be2? { (Mate in 3 → 8.84) Lost forced checkmate sequence. Qa8+ was best. } (23. Qa8+ Rd8 24. Qxd8+ Rf8 25. Qxf8#) 23... Rb6? { (8.84 → Mate in 3) Checkmate is now unavoidable. c6 was best. } (23... c6 24. d5 c5 25. Rxc5 Rf8 26. Rfc1 Qf6 27. Bd3 Rdd8 28. Qh3 h6 29. Qh5 a5 30. Kg2) 24. Qa8+ Rf8 25. Qxf8# { White wins by checkmate. } 1-0