[Event "Masthanaiah chess world 1978"] [Site "https://lichess.org/MtBUUGLL"] [Date "2021.05.20"] [White "elrharsha"] [Black "DsoJ"] [Result "0-1"] [UTCDate "2021.05.20"] [UTCTime "08:58:16"] [WhiteElo "1915"] [BlackElo "1800"] [WhiteRatingDiff "-27"] [BlackRatingDiff "+50"] [Variant "Standard"] [TimeControl "1500+2"] [ECO "A46"] [Opening "Indian Defense: London System"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 e6 2. Nf3 Nf6 3. Bf4 { A46 Indian Defense: London System } c5 4. e3 Nc6 5. c4 Qb6 6. b3?! { (0.00 → -0.97) Inaccuracy. Qb3 was best. } (6. Qb3 cxd4 7. Qxb6 axb6 8. Nxd4 Bb4+ 9. Nc3 Nxd4 10. exd4 d5) 6... cxd4 7. exd4 Bb4+ 8. Nbd2 Nxd4 9. Nxd4?? { (-1.45 → -3.81) Blunder. Bd3 was best. } (9. Bd3 Nxf3+ 10. Qxf3 Qc6 11. Be2 Ne4 12. Rd1 Nxd2 13. Bxd2 Bxd2+ 14. Kxd2 Qxf3 15. Bxf3 Rb8) 9... Qxd4 10. Be3 Bxd2+ 11. Bxd2 Ne4?? { (-4.01 → -1.10) Blunder. Ng4 was best. } (11... Ng4 12. Qc1 Qxf2+ 13. Kd1 Qf5 14. Qc3 Nf2+ 15. Kc1 O-O 16. Rg1 Ne4 17. g4 Qf2 18. Qe3) 12. Be3 Qc3+ 13. Bd2?? { (-0.88 → -7.80) Blunder. Ke2 was best. } (13. Ke2 d5 14. Rc1 Qa5 15. Qc2 Nf6 16. Qd2 Qxd2+ 17. Bxd2 b6 18. f3 dxc4 19. bxc4 Ba6) 13... Nxd2 14. Qxd2 Qxa1+ 15. Ke2 Qe5+ 16. Qe3 Qxe3+ 17. fxe3 O-O 18. g3 d5 19. cxd5 exd5 20. Bg2 Be6 21. Rd1 Rac8 22. Rd2 Rfd8 23. h3 Rc3 24. e4 Rdc8 25. exd5 Bd7 26. d6 Rc2 27. Bxb7 Rxd2+ 28. Kxd2 Rb8 29. Bg2 Rb6 30. Kc3 Rxd6 31. h4 g6 32. a4 f5 33. b4 Bxa4 34. Kc4 Rd2 35. Bd5+ Kf8 36. Be6 Rg2 37. b5 Rxg3 38. Kb4 Rg4+ 39. Ka5 Rxh4 40. Bd7?! { (-10.95 → Mate in 16) Checkmate is now unavoidable. Bd5 was best. } (40. Bd5 Bc2) 40... Rd4?! { (Mate in 16 → -13.40) Lost forced checkmate sequence. Ke7 was best. } (40... Ke7 41. Bc6 Kd6 42. Ka6 Kc7 43. Bb7 Rb4 44. Bf3 Bc2 45. b6+ axb6 46. Be2 Rd4 47. Kb5) 41. Bc6 h5 42. Ka6 Rb4 43. Ka5 Rd4 44. Ka6 Rd6 45. Kxa7 Rxc6 46. bxc6 Bxc6 47. Kb6 f4 48. Kxc6 f3 49. Kd5 f2 50. Ke4 f1=Q 51. Ke3 h4 52. Ke4 h3 53. Ke5 h2 54. Ke6 h1=Q 55. Ke5 Qhf3 56. Ke6 Qe3+ 57. Kd5 Qd1+ 58. Kc4 Qec1+ 59. Kb4 Qdd2+ 60. Kb3 Qdb2+ 61. Ka4 Qca1# { Black wins by checkmate. } 0-1