[Event "FIDE World Cup 2021"] [Site "Sochi"] [Date "2021.07.14"] [Round "1.56"] [White "Iordachescu, Viorel"] [Black "Murzin, Volodar"] [Result "0-1"] [ECO "B12"] [WhiteElo "2589"] [BlackElo "2502"] [Annotator "TA"] [PlyCount "106"] [EventDate "2021.??.??"] {[%evp 0,106,19,28,81,69,63,61,53,69,42,28,32,11,24,10,16,17,35,12,50,28,46,38, 38,27,37,41,39,-8,5,-24,46,53,63,54,54,46,101,20,10,34,16,-9,-10,2,5,5,49,35, 49,49,49,51,43,-17,-16,-43,-10,-69,-16,-69,-48,-99,-107,-122,-98,-98,-166,-163, -112,-88,-95,-121,-126,-125,-120,-148,-83,-71,-71,-138,-138,-109,-81,-124,-191, -148,-119,-119,-119,-136,-136,-110,-90,-114,-74,-61,-63,-271,-101,-105,-151, -29995,-29996,-29997,-29998,-29999,-30000]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. c3 h6 7. O-O Nd7 8. a4 {B12: Caro-Kann: Advance Variation.} a5 9. Na3 Bh7 10. Ne1 {[#] White is slightly better.} Ng6 $146 ({Predecessor:} 10... c5 11. Nb5 Nc6 12. Bd3 Na7 13. Bxh7 Rxh7 14. Nxa7 Rxa7 15. Be3 Ra6 16. c4 dxc4 {1/2-1/2 (29) Pranesh,M (2317) -Ghosh,D (2550) New Delhi 2020}) 11. Bd3 Be7 12. Nac2 O-O ({Black should try} 12... c5 $14) 13. g3 c5 14. h4 c4 15. Be2 Nb8 (15... f6 $11) 16. Ng2 Nc6 17. h5 Nh8 18. Nce3 Qd7 19. f4 (19. Bg4 $16) 19... f6 $1 $14 20. exf6 Bxf6 21. Bg4 Nf7 22. b3 cxb3 23. Qxb3 Ne7 24. Ba3 { And now Qb5 would win.} Be4 25. Qb5 Qc8 26. Rac1 Ra6 27. Rfe1 Nd6 28. Qe2 Nef5 29. Kh2 (29. c4 $11 Nxd4 30. Qa2 dxc4 31. Nxc4) 29... Rc6 (29... Qd7 $15) 30. Qd2 (30. c4 $11 {remains equal.} Nxd4 31. Qa2) 30... Re8 $17 31. Bxd6 Nxd6 ( 31... Rxd6 $6 32. Nd1 $11) 32. Bh3 b5 33. Ng4 (33. axb5 $17 Nxb5 34. Ng4) 33... bxa4 $19 34. N2e3 Qd8 (34... a3 $19 {Hoping for ...Qb7.} 35. Nd1 Qb7) 35. Ne5 ( 35. Qa2 $17 {keeps fighting.}) 35... Rb6 36. Ra1 {[#]} Qb8 $1 {...Rb2 is the strong threat.} 37. Re2 (37. Ra2 {is the only way for White.} Rb1 38. Nd7) 37... Rb1 38. Qa2 Rxa1 (38... Bxe5 39. dxe5 Qb5 40. Rd2 $19) (38... Qb5 $19 { White must now prevent ...Rxa1.} 39. Rf2 Qb3) 39. Qxa1 $17 Qb3 (39... Bxe5 $19 40. fxe5 Nf7) 40. Ra2 $2 (40. Bxe6+ $17 Rxe6 41. Rb2) 40... Bxe5 $19 41. dxe5 Nb5 42. Rxa4 d4 $1 ({Inferior is} 42... Qxc3 43. Qxc3 Nxc3 44. Rxa5 $11) ({ And not} 42... Nxc3 43. Ra3 $11) 43. Bf1 Rc8 44. Rc4 Rxc4 45. Bxc4 Qxc3 46. Bxe6+ (46. Qxc3 $142 dxc3 47. Bxb5) 46... Kf8 47. Qa4 Qb2+ $40 {Black has strong attack.} ({But not} 47... Qxe3 48. Qxb5 Qd2+ 49. Kh3) (47... Qd3 $19 { ( -> ...Qe2+)} 48. Ng2 {[#]} Qc2 $1 49. Qxc2 Bxc2) 48. Kh3 $17 {Threatens to win with Qc4!} Qb4 49. Qd1 {White does not recover from this.} (49. Qxb4+ $17 axb4 50. Nf1) 49... Nc3 (49... Nc7 $142 50. f5 dxe3 51. Qd8+ Ne8) 50. Qd2 $19 Qb1 {Strongly threatening ...Qh1+.} 51. Qxd4 $2 (51. Kh4 $19 Qb6 52. Bg4) 51... Qh1+ {Black mates.} 52. Kg4 Bf3+ 53. Kf5 Qxh5# {Weighted Error Value: White=0. 71/Black=0.31} 0-1