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Caruana, Fabiano (2804) - Mamedyarov, Shakhriyar (2748) [B33]
Vugar Gashimov Memorial, Shamkir Chess (8) 2016

Notes by Boris Schipkov

1. e4 c5
The Sicilian Defence.
2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7
The Cheliabinsk Variation.
10. Bxf6 Bxf6








   
11. c4
A popular move in the last years. In the game Stefansson, H - Mamedyarov, S, Antalya 2004, White played 11. c3 Ne7 12. Nxf6+ gxf6 13. Nc2 Bb7 14. Bd3 d5 15. exd5 Qxd5 16. Ne3 Qe6 17. a4 Rd8 18. Qc2 e4 19. Be2, with a slight edge. Or 11...O-O 12. Nc2 Rb8, Vachier-Lagrave, M - Carlsen, M, London 2015.
11...b4 12. Nc2 O-O








   
13. h4
White prevents ...Bg5 and plans Bh3 after g3. The main alternative is 13. g3 Bg5
14. Bg2 Qa5 15. O-O Qc5 16. b3 a5 17. Kh1 a4 (17...Ne7=) 18. Qe2 (18. f4) 18...Be6, with equality in Caruana, F - Mamedov, R, Baku 2015.
14. h4 Bh6 15. Bh3 Be6 16. Kf1 Qa5 17. Kg2 Qc5 18. Qd3 a5 19. Rhf1 Ra7, with counterplay in Popov, I - Caruana, F, Plovdiv 2012. Fabiano Caruana played these positions both White and Black.
If White takes the b4-pawn then Black levelled easily: 13. Ncxb4 Nxb4 14. Nxb4 Qb6 15. Nd5 Qxb2 16. Bd3 Bd8 17. O-O Be6=, Anand, V - Radjabov, T, Bilbao 2008.
13...a5 14. g3 Be6 15. Bh3
15. Bg2 is also playable.









   
15...Rb8
Here 15...a4 is also possible, 16. Bxe6 fxe6 17. Ndxb4 Nxb4 18. Nxb4 Qb6 19. Qd2 Be7, with excellent counterplay in Bodnaruk, A - Ushenina, A, Sochi 2015.
Or 16. b3 Kh8 17. Kf1 Bxd5 18. exd5 (18. cxd5 Nd4, 1/2, a draw, Popov, I -Zhigalko, S, Minsk 2015) 18...Nd4 (18...axb3) 19. Nxd4 exd4, with equality in Bodnaruk, A - Zhigalko, S, Minsk 2015.
Or 16. Kf1 b3 17. axb3 axb3 18. Nce3 Rxa1 19. Qxa1 Nd4= 20. Kg2 Qa8 21. Qd1 Bd8 22. Qa1 Bf6 23. Qd1 Bd8 24. Qa1 Bf6 1/2, a draw in Rasulov, V - Mamedov, R, Baku 2015.
16. Qd3 Qd7!?
An interesting continuation. Other moves: 16...Nd4 and 16...a4.
16...Nd4 17. Nxd4 exd4 18. Nxf6+ (18. Kf1!? is more precise) 18...Qxf6 19. Bg2 Rbc8 20. b3 d5 21. cxd5, Poetsch, H - Uwira, O, Frankfurt 2012, 21...Rc3!? 22. Qd2 Re3+ 23. fxe3 dxe3 24. Qxe3 Qxa1+ 25. Kf2 Qxa2+ 26. Qe2 Qxb3 27. dxe6 fxe6+ 28. Bf3 a4=, with equality.
16...a4 17. b3 Kh8 (17...Bxd5 18. cxd5 Na5 19. O-O Qe8 20. Ne3, with a small edge to White in Caruana, F - Van Wely, L, Wijk aan Zee 2014) 18. Kf1 Qd7 19. Kg2 Bd8 20. Rad1, with a small edge to White in Brkic, A - Jukic, B, Velika Gorica 2015.
17. Nxf6+ gxf6








   
18. Bf5!?
18. Bg2!? is also playable, 18...f5 19. Rd1 (19. O-O-O!? b3 20. axb3 Rfc8 21. Rhe1, with a slight edge to White) 19...Rbd8 20. Qe3, So, W - Pascua, H, Manila 2008, 20...Kh8 21. b3 f4 (21...Ne7=) 22. gxf4 f5, with good compensation for the pawn, because White's king is in the centre.
18...a4!? deserves attention, 19. b3 f5 20. O-O f4! (20...fxe4 21. Qxe4 Na5 22. Qe3 $14) 21. gxf4 (21. Rad1 Rbd8 22. gxf4 f5) 21...exf4 22. Qf3 Qe7 23. Qxf4 Kh8 24. Rad1 Ne5 25. Rd2 Rg8, with fine compensation for the pawn.
18...Qb7!
Black sacrifices the d6-pawn.
19. Ne3
But 19. Qxd6? is bad, 19...Rfd8 20. Qc5 Bxf5 21. exf5 Nd4, and Black wins. Or 19. Bxe6 fxe6 20. Qxd6? b3 (20... Nd4) 21. axb3 Nb4, and Black has a clear advantage.
19...Nd4
The strong knight in the centre secures nice counterplay for Black.
20. O-O b3








   
21. a3
White can play 21. Qd1!? Bxf5 22. Nxf5 Nxf5 23. exf5 Kg7, with equality.
21...Kh8
Black can prefer 21...Rbc8 at once.
22. Rac1 Rbc8 23. Rfe1?!
23. Kh2 or 23. Nd5 is more precise, with equality.
23...Rc5!
Excellent. White sacrifices the exchange, but Black does not play 23...Nf3+ 24. Kg2 Nxe1+ 25. Rxe1 a4, because after 26. Qe2 Rg8 27. Rd1= White has sufficient compensation. In the endgame after 23...Rc5! Black can attack White's pawns on the queenside.
24. Qd1 Bxf5 25. Nxf5 Nxf5 26. exf5 Rd8 27. Qh5 Kg7 28. Rc3
If 28. Qg4+?! then 28...Kf8! 29. Qh5 d5 30. Qxh7 dxc4, with a small edge to Black.









   
28...h6
28...Rdc8! is better, 29. Qg4+ Kf8, and Black has a small advantage in the endgame.
29. Ree3?
A mistake. White could try 29. Rd1 or 29. Qg4+.
29...a4 30. Qe2 d5?!
30...Rdc8! is better, 31. f4 Qb6 32. fxe5 Rxe5 33. Kg2 Rxc4! 34. Rxc4 Rxe3, and Black wins.
31. Qf3?!
31. cxd5! is more stubborn, 31...Rcxd5 32. Qf3.









   
31...Rdc8!
The best move in this position.
32. cxd5 Rxc3 33. Rxc3 Rxc3 34. Qxc3 Qxd5
The queen endgame is winning for Black, because he can attack b2-pawn with ...Qc2.
35. Qb4 h5
After 35...e4 36. Qe1 Qd3 37. Qa1 Qc2 38. Kf1 e3 39. fxe3 Qh2 Black wins.
36. Qxa4








   
36...Qd3?
An error. Black must play 36...e4! 37. Qe8 Qd1+ 38. Kh2 Qe2 39. Kg2 Qxb2, winning.
37. g4!
The only move to fight.
37...Qb1+ 38. Kg2 Qxb2 39. gxh5 Qc2 40. Qg4+
Or 40. Qb4 b2 41. h6+ Kxh6 42. Qf8+ Kh5 43. Kg3! Qc3+ 44. f3 Qe1+ 45. Kg2 Qc1 46. Qh8+ Qh6 47. Qg8 Qc1 48. Qh8+=, a draw by repetition.
40...Kh7








   
41. h6?
The last mistake. White must continue 41. Qa4! Qc3 (41...Kh6 42. Qe8 Kxh5 43. Kg3=) 42. Qa7 Qc6+ 43. Kg3 Qd5 44. Qb6=, with equality.
41...Kxh6 42. Qg8 Qxf5
Now Black wins thanks to the passed b3-pawn.
43. Qf8+ Kh5 44. f3 Kxh4
Or 44...Qc2+ 45. Kg3 Qc4 46. Qh8+ Kg6 47. Qg8+ Kf5, and Black wins.
45. Qb4+ Qf4
45...e4 is good too, 46. Qxb3 Qh3+ 47. Kf2 Qg3+ 48. Kf1 Kh3, winning.
46. Qxb3 Qd2+ 47. Kf1 Kg3 48. f4+ Kxf4 49. a4 f5








   
50. Qb5 Qd1+
Black has two extra pawns, therefore easily wins.
51. Kf2 Qc2+ 52. Kf1 f6! 53. Qb4+ e4 54. Qb5 Kg3 55. Qe2 Qxe2+ 56. Kxe2 f4 57. a5 f3+ 58. Kf1 e3

White resigned. 0-1










Move
   

Caruana, Fabiano (2804) - Mamedyarov, Shakhriyar (2748) [B33]
Vugar Gashimov Memorial/Shamkir (8) 2016

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 O-O 13. h4 a5 14. g3 Be6 15. Bh3 Rb8 16. Qd3 Qd7 17. Nxf6+ gxf6 18. Bf5 Qb7 19. Ne3 Nd4 20. O-O b3 21. a3 Kh8 22. Rac1 Rbc8 23. Rfe1 Rc5 24. Qd1 Bxf5 25. Nxf5 Nxf5 26. exf5 Rd8 27. Qh5 Kg7 28. Rc3 h6 29. Ree3 a4 30. Qe2 d5 31. Qf3 Rdc8 32. cxd5 Rxc3 33. Rxc3 Rxc3 34. Qxc3 Qxd5 35. Qb4 h5 36. Qxa4 Qd3 37. g4 Qb1+ 38. Kg2 Qxb2 39. gxh5 Qc2 40. Qg4+ Kh7 41. h6 Kxh6 42. Qg8 Qxf5 43. Qf8+ Kh5 44. f3 Kxh4 45. Qb4+ Qf4 46. Qxb3 Qd2+ 47. Kf1 Kg3 48. f4+ Kxf4 49. a4 f5 50. Qb5 Qd1+ 51. Kf2 Qc2+ 52. Kf1 f6 53. Qb4+ e4 54. Qb5 Kg3 55. Qe2 Qxe2+ 56. Kxe2 f4 57. a5 f3+ 58. Kf1 e3 0-1


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© 2016 Boris Schipkov