Anand Beats Back A Speculative Piece Sacrifice By Mamedyarov At The Tal Memorial

Mamedyarov sacrifices a piece for three pawn, but Anand plays well and wins. From Chessbase.

[Event "10th Tal Mem 2016"]
[Site "Moscow RUS"]
[Date "2016.09.27"]
[Round "?"]
[White "Anand, V."]
[Black "Mamedyarov, S."]
[Result "1-0"]
[WhiteElo "2776"]
[BlackElo "2761"]
[PlyCount "107"]
[EventDate "2016.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Bb7 10. d4 Re8 11. Nbd2 exd4 12. cxd4 Nd7 13. Nf1 Na5 14. Bc2 Bf6 15.
Rb1 c5 16. d5 Nc4 17. b3 Nce5 18. N3h2 Ng6 {As Svidler mentioned on commentary,
this is all following the game between Giri-Svidler, a crucial victory for the
Russian in the World Cup last year!} 19. Ne3 (19. Ng3 Bc8 (19... Bc3 $5 {Was
perhaps an improvement by Bu against Hou Yifan in July.}) 20. Rf1 {
Giri-Svidler, 2015.}) 19... Bc8 (19... Bc3 {was played in Macieja-Berczes,
2015. The Hungarian player, Berczes, won at the end.}) 20. Bd2 b4 21. Nhg4 a5
22. Nxf6+ Qxf6 23. g3 a4 {Anand didn't understand this move. He was happy to
see a4.} (23... Nde5 24. f4 (24. Nf5 $5) 24... Nxf4 25. gxf4 Qxf4 26. Nf1 Qh4
27. Re3 Bxh3 {is similar to the game, but without the a4 pawn sacrifice. More
analysis will be needed to determine the differences.}) 24. bxa4 Nde5 25. f4 {
It is clear that after this move Black must sacrifice his piece. Anand
considers this version to be better for White than without the a4 break.
Thorough analysis will be found in a future ChessBase Magazine edition, but
for now it seems that the former World Champion is correct.} Nxf4 26. gxf4 Qxf4
27. Nf1 Qh4 28. Re3 Bxh3 {Vishy thought it was hard to collect a4 in this
position.} 29. Qe2 Qg4+ {A surprising decision, to exchange queens in this
material balance.} (29... h5 30. a3 $1 {Is a nice break that activates White's
pieces.}) 30. Qxg4 Bxg4 31. a3 Nf3+ 32. Kf2 Nd4 33. Rb2 bxa3 34. Rxa3 Nxc2 35.
Rxc2 Rxe4 36. a5 {Even though Black has three pawns for the pieces, the
combination of the power of the passed a pawn and the possibility for White's
pieces to activate give him an almost winning advantage.} Bc8 37. Re3 {Based
on a miscalculation.} (37. Rb2 $1 {was easier.}) 37... Rf4+ 38. Rf3 (38. Kg3
Rg4+ 39. Kf3 h5 40. Re8+ Kh7 $16 {is not that clear just yet.}) 38... Re4 39.
Rb2 Ba6 40. Bc3 h5 41. Ng3 Rh4 42. Rb6 Rh2+ 43. Kg1 Rc2 44. Nf5 Bc4 45. Re3 $1
Kh7 46. Rxd6 $1 {The start of a study-like win.} Rb8 47. Rb6 Rxb6 48. axb6 Bxd5
49. Nxg7 Rg2+ (49... h4 50. Nh5 Kh6 51. Nf4 Bc6 52. Bf6 {and Black is in an
annoying mating net.}) 50. Kf1 Rg6 51. Nxh5 Bc4+ 52. Kf2 Rxb6 53. Nf6+ {The
point of the combination. Both king moves lose to different things.} Kh6 (53...
Kg6 54. Nd7 {and Black cannot defend the rook and check on e5, taking the
bishop, which incidentally also cannot be defended.}) 54. Rg3 {Nothing to to
against impeding mate but sacrifice the rook, so Mamedyarov called it quits.} (
54. Rg3 Rd6 55. Be5 Rd2+ 56. Ke1 Re2+ 57. Kd1 Rxe5 58. Ng4+ Kg5 59. Nxe5+ Kf4
60. Rg4+ $18) 1-0