Bad Bishop Blunder

[Event "Chessmaster: Grandmaster Edition Rated G"]
[Site "?"]
[Date "2012.01.04"]
[Round "?"]
[White "Cliff Sears, annotated"]
[Black "Orin"]
[Result "0-1"]
[ECO "B40"]
[Annotator "Komodo32 Version 4 (360m)"]
[PlyCount "106"]
[EventDate "2012.??.??"]

{B40: Sicilian: 2...e6, Unusual lines} 1. e4 c5 2. c4 Nc6 3. Nf3 e6 4. Bd3 $146
(4. Be2 Nf6 (4... Qc7 5. Nc3 Nf6 6. O-O a6 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 Bd6
10. Kh1 O-O 11. Qd3 Be7 12. f4 d6 13. Qg3 Rd8 14. Be3 b6 15. Bd4 Bb7 16. Rac1
g6 17. Bd3 Nd7 18. h4 Bf6 19. Bxf6 {Jarmolinskaya,M-Miulescu,G (2415)
Bucharest 1995 1/2-1/2 (63)}) (4... g6 5. d4 cxd4 6. Nxd4 Nf6 7. Nc3 Bg7 8. Be3
O-O 9. O-O d5 10. cxd5 exd5 11. exd5 Nb4 12. Ndb5 Nfxd5 13. Bc5 Re8 14. Nd6
Bxc3 15. Nxe8 Qxe8 16. Bxb4 Bxb4 17. Qxd5 Qxe2 18. Qd8+ Bf8 19. Rae1 {Jackson,
D-Vranesic,Z Vancouver 1971 0-1 (35)}) 5. d3 d5 6. Nc3 d4 7. Nb1 e5 8. O-O Bd6
9. Na3 a6 10. Nc2 O-O 11. Nce1 Ne8 12. g3 b5 13. Nd2 Qc7 14. Ng2 Bh3 15. cxb5
axb5 16. a4 Nb4 17. Ra3 bxa4 18. Nc4 f5 {Kubanek,J-Sajtar,J Prague 1943 0-1
(74)}) (4. b3 Nf6 5. d3 Be7 6. Be2 Nxe4 7. dxe4 Bf6 8. Bd2 Bxa1 9. Nc3 Bxc3 10.
Bxc3 O-O 11. e5 Qe7 12. h4 Rd8 13. Bd3 d6 14. Bxh7+ Kf8 15. Ng5 dxe5 16. Qh5
Qf6 17. Rh3 g6 18. Qf3 Qf5 {De Rooi,P-Van den Berg,C Amsterdam 1961 1-0 (39)})
(4. Be2 Nd4 $11) 4... Nh6 (4... Nf6 5. Nc3 $11) 5. h3 {Prevents intrusion on g4
} Be7 6. b3 (6. Bc2 f6 $11) 6... Bf6 7. Nc3 a6 {Consolidates b5} 8. O-O Qa5 (
8... Ng8 9. Rb1 $11) 9. Qc2 Nb4 {Black threatens to win material: Nb4xc2} 10.
Qb1 Nc6 11. Bb2 Nb4 $2 (11... d6 $5 $11 {is worth looking at}) 12. Re1 {White
prepares e5} (12. e5 Be7 13. Bxh7 Rb8 $18) 12... Qb6 (12... Qd8 $142 $5 $16)
13. e5 $18 Bd8 14. Re2 (14. Bxh7 Be7 $18) 14... Be7 (14... Nxd3 15. Qxd3 O-O
16. Ne4 $14) 15. Ne4 (15. Bxh7 Nc6 $18) 15... Nf5 (15... Nxd3 16. Qxd3 Qc6 $16)
16. Ng3 (16. Nf6+ $142 $5 gxf6 17. Bxf5 $18) 16... Nxg3 $11 17. fxg3 g6 {Black
has a new backward pawn: f7} (17... Nxd3 18. Qxd3 O-O 19. Qe3 $14) 18. Kh2 (18.
Be4 Qc7 $16) 18... Nc6 19. Qc2 (19. Be4 O-O $14) 19... Nd4 (19... O-O $5 $11 {
deserves consideration}) 20. Nxd4 $16 cxd4 21. Rf1 (21. Re4 $16) 21... Qc5 (
21... O-O 22. Re4 Bc5 23. a3 $16) 22. h4 (22. Re4 O-O $18) 22... b5 (22... d6
23. b4 Qxb4 24. Bxd4 dxe5 25. Bxe5 $16) 23. Rf4 bxc4 24. Bxd4 $4 {forfeits the
advantage} (24. Qxc4 $142 Qxc4 25. bxc4 $16) 24... cxd3 $19 25. Qxd3 (25. Bxc5
dxc2 26. Rc4 Bb7 $19) 25... Qd5 26. Re1 (26. Ref2 O-O $19) 26... g5 (26... Bb7
{might be the shorter path} 27. Qe2 $19) 27. hxg5 Bb7 28. Re2 (28. Qe2 Bxg5 29.
Rg4 Be7 $19) 28... Bxg5 29. Rg4 Qb5 $4 {stumbles just before the finish line} (
29... Be7 $142 {nails it down} 30. Rf4 h5 $19) 30. Qxb5 $14 axb5 31. Rxg5 {
White traps the enemy king in the center} Rxa2 32. Rf2 (32. Rg7 Kf8 33. Rg4 Rc2
$14) 32... Rc2 (32... Be4 33. Bc5 $11) 33. Rg4 (33. Rg7 Rf8 $16) 33... Bd5 (
33... h5 34. Rg7 h4 35. g4 $14) 34. b4 (34. Rg7 $5 {should be examined more
closely} Rf8 35. Bc3 $16) 34... Rc4 $11 {Black threatens to win material:
Rc4xb4} 35. Kh3 (35. Rff4 Rxb4 36. Rg7 Bb3 $11) 35... Rxb4 $15 {Black has a
new passed pawn: b5} 36. Be3 (36. Bc5 $5 {is worthy of consideration} Rxg4 37.
Kxg4 Rg8+ 38. Kh4 $15) 36... Rxg4 $17 37. Kxg4 Rg8+ 38. Kh3 b4 39. Rf1 (39. Rf4
b3 $17) 39... b3 (39... f5 40. exf6 Kf7 41. Bf4 $19) 40. Bd4 (40. Rc1 Ke7 41.
Bc5+ d6 42. Bxd6+ Kd7 $17) 40... Be4 (40... Rg5 41. Bb2 $19) 41. Kh2 (41. Rf4
Bc2 $17) 41... Rg5 (41... Ke7 42. Rf4 Bc2 43. Bb2 $17) 42. Rf4 $17 Bd5 43. Rh4
(43. Bb2 h6 $17) 43... h5 (43... d6 $142 44. exd6 Kd7 $19) 44. Kg1 $2 (44. g4
$142 hxg4 45. Rh8+ Ke7 46. Bc5+ d6 47. Bxd6+ Kd7 48. Rb8 $17) 44... Rxg3 $19
45. Rh2 (45. Kf2 Rxg2+ 46. Ke1 d6 $19) 45... Rd3 46. Bc3 (46. Bb2 $19 {the
last chance for counterplay}) 46... Rxc3 $1 {a brilliant end} 47. dxc3 b2 48.
Rxh5 (48. Kf2 {doesn't get the cat off the tree} b1=Q 49. Rh4 Qb2+ 50. Ke3
Qxc3+ 51. Ke2 Bxg2 52. Kf2 Qf3+ 53. Ke1 Qg3+ 54. Kd2 Qxh4 55. Kd3 Qb4 56. Ke3
Qc3+ 57. Kf2 Bd5 58. Ke2 h4 59. Kf2 Qd2+ 60. Kf1 Bf3 61. Kg1 Qg2#) 48... b1=Q+
49. Kh2 (49. Kf2 {hardly improves anything} Qc2+ 50. Ke3 Qe4+ 51. Kf2 Qxg2+ 52.
Ke3 Qf3+ 53. Kd2 Qxh5 54. Kd3 Qf3+ 55. Kd4 Qe4+ 56. Kc5 Qe3+ 57. Kb5 Qxc3 58.
Kb6 Qb4+ 59. Ka6 Be4 60. Ka7 Qb7#) 49... Qg6 50. Rh8+ Ke7 51. Kh3 (51. g3 {
does not help much} Qc2+ 52. Kh3 Bf3 53. c4 Qg2+ 54. Kh4 Qh2+ 55. Kg5 Qxg3+ 56.
Kh6 Qg6#) 51... Qxg2+ 52. Kh4 Bf3 53. c4 (53. Rg8 {cannot change what is in
store for White} Qxg8 54. Kh3 Qg2+ 55. Kh4 Qg4#) 53... Qg4# 0-1