[Event "2010 Chess Olympiad"]
[Site "Khanty-Mansiysk"]
[Date "????.??.??"]
[Round "?"]
[White "Ivanchuk, Vassily"]
[Black "Leko, Peter"]
[Result "1-0"]
[WhiteElo "2754"]
[BlackElo "2724"]
[Annotator "GM Lubomir Kavalek/ Huffington Post"]
[PlyCount "77"]
[EventCountry "RUS"]
[WhiteTeam "Ukraine"]
[BlackTeam "Hungary"]
[WhiteTeamCountry "UKR"]
[BlackTeamCountry "HUN"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 c6 5. e3 Nbd7 6. Qc2 ({Avoiding the
straight Meran defense} 6. Bd3 dxc4 7. Bxc4 b5) 6... Bd6 7. Bd3 O-O 8. O-O dxc4
9. Bxc4 a6 10. Rd1 b5 11. Bd3 (11. Be2 {is more modest, but also more popular.}
) 11... Qc7 (11... Bb7 12. Ne5) 12. Bd2 {Ivanchuk is anticipating a queenside
scramble and plans to shut down black's counterplay with 13.b4! (13...Bxb4 14.
Nxb5!). Pavel Eljanov, another strong Ukrainian grandmaster, won games with
two other moves:} (12. a4 b4 13. Ne4 Nxe4 14. Bxe4 Nf6 15. Bd3 c5 16. b3 cxd4
17. Qxc7 Bxc7 18. Nxd4 Bb7 19. Bb2 Rac8 20. Rac1 Be5 21. f3 h5 22. Kf2 a5 23.
Bc4 Nd5 24. g3 Nb6 25. Bb5 Rfd8 26. Rxc8 Rxc8 27. e4 h4 28. gxh4 Bf6 29. Ke3
Bxh4 30. Ne2 Bg5+ 31. f4 Bd8 32. Rg1 g6 33. Bd4 Na8 34. f5 exf5 35. exf5 Bd5
36. fxg6 Bxb3 37. Nf4 f6 38. Bd7 Rc2 39. Bf5 Rxh2 40. Rc1 Bc7 41. Bxf6 Bb6+ 42.
Kf3 Nc7 43. Kg3 {1-0 Eljanov,P (2716)-Aronian,L (2768)/Jermuk 2009}) (12. Ne4
Nxe4 13. Bxe4 Nf6 14. Bd3 c5 15. dxc5 Qxc5 16. a4 bxa4 17. Qxc5 Bxc5 18. Rxa4
Bb7 19. Bd2 Rfd8 20. Bc3 Be7 21. Raa1 Nd5 22. Ba5 Rdc8 23. Nd4 g6 24. g3 Nb4
25. Bf1 Kf8 26. Ra4 Nd5 27. e4 Nf6 28. f3 e5 29. Nb3 Rab8 30. Rc4 Bc6 31. Rc3
Ba4 32. Rxc8+ Rxc8 33. Rc1 Rxc1 34. Nxc1 Bc5+ 35. Kg2 Bd4 36. b3 Bb5 37. Bxb5
axb5 38. Ne2 Bb2 39. Bb4+ Ke8 40. Bc3 Bxc3 41. Nxc3 Kd7 42. Nxb5 Kc6 43. Nc3
Kc5 44. g4 h6 45. h4 Nd7 46. Nd5 f5 47. b4+ Kd4 48. exf5 gxf5 49. Ne7 fxg4 50.
fxg4 e4 51. Nf5+ Kd3 52. b5 Kc4 53. Nxh6 Kxb5 54. g5 Ne5 55. h5 e3 56. Nf5 e2
57. Nd4+ Kc4 58. Nxe2 Kd5 59. Kg3 Ke6 60. Nd4+ Kf7 61. Kf4 Nc4 62. Nf5 Nb6 63.
g6+ Kf6 64. Ne3 {1-0 Eljanov,P (2751)-Akopian,V (2694)/Astrakhan 2010.}) 12...
c5 13. dxc5 Qxc5 14. a4 {Undermining the queenside.} bxa4 (14... b4 15. Ne4
Qxc2 16. Bxc2 Be7 17. Nxf6+ Nxf6 18. Ne5 {is pleasant for white.}) ({Black
could have tried} 14... Bb7 15. axb5 Bxf3 {to shatter white's kingside.}) 15.
Rxa4 Bb7 16. Rc4 Qa7 $6 ({And just like that the game turns. Black had to try} 
16... Bxf3 17. Rxc5 Bxd1 18. Nxd1 Nxc5 {with roughly equal chances.}) 17. Ne4
Nxe4 18. Bxe4 Bxe4 19. Qxe4 {The light squares are more accesible to white.}
Rac8 20. Qd4 $1 {Ivanchuk begins to dominate in the center, driving the black
queen back. Leko has problems on the d-file and can't exchange the queens.} Bc5
$6 (20... Bb8 {was a better alternative:} 21. Bc3 Qxd4 22. Rcxd4 Nc5 23. g3
Rfe8 24. Rc4 $14) (20... Qxd4 $2 21. Rxd4 Rc6 22. Bc3 {wins.}) 21. Qc3 $1 {
Pinning the bishop and threatening 22.b4.} Rcd8 ({After} 21... Rc7 22. Qc2 Rfc8
23. Bc3 {the black king may not be comfortable.}) 22. Qc2 $1 {Freeing the
square c3 for his bishop and threatening to weaken black's kingside with 23.
Ng5.} Rfe8 $2 ({Allowing Ivanchuk to increase his advantage by weakening the
dark sqaures. Leko had to try} 22... h6 23. Bc3 Rfe8 {to meet} 24. Rg4 {with}
Bf8 $1) 23. Ng5 $1 g6 24. Ba5 (24. Be1 $5 Be7 (24... Bb6 25. Ne4 Kg7 26. Rc6
$18 a5 27. Nd6 Rf8 28. Nc8 Qb7 29. Rxd7 {wins.}) 25. Nxe6 fxe6 26. Rc7 $18)
24... Bb6 25. Bc3 $1 {Ivanchuk forced the black bishop out of play. More holes
are creeping into black's position.} e5 (25... f5 26. h4) 26. Ne4 Re6 27. Bb4
Kg7 28. Rc6 Nf6 ({Black is in trouble.} 28... Nf8 {comes} 29. Bd6 $1) ({and
after} 28... Rxc6 29. Qxc6 {white is threatening to win with 30.Be7.}) 29. Rxe6
fxe6 {Black is left with a weak double pawn and Invanchuk begins to work on it.
} 30. Nxf6 Kxf6 ({Black gets mated after} 30... Rxd1+ $2 31. Qxd1 Kxf6 32. Qf3+
Kg5 (32... Kg7 33. Qf8#) 33. Bf8 $1 {threatening 34.g3 and 35. h4 mate.} a5 34.
g3 ({or} 34. h4+ Kxh4 35. Bh6 g5 36. Qh3#) 34... Bxe3 35. h4#) 31. Ra1 ({
Ivanchuk decides to keep the rooks, tickling another weakness on a6. White
could also play} 31. Bd6 $5 {threatening 32.Qe4, for example} Qa8 32. Qa4 Kf7
33. Bxe5 {with a healthy pawn up.}) 31... Qb7 32. Bc3 {Pinning the e5-pawn.} a5
({After} 32... Rd5 33. Qe2 Rb5 34. Qg4 {white has multiple threats.}) 33. Qa4
g5 $2 ({After} 33... Qd5 34. Qf4+ Ke7 35. Qg5+ Kf7 36. h4 {black can't survive.
}) 34. h4 $1 h6 35. Qg4 Qh7 36. Qh5 ({Threatening to win a pawn with 42.hxg5+
and black has to give up something. Another way to attack was with} 36. Qf3+
Qf5 37. Qc6 Rb8 38. Qd6 Rb7 39. Ra4 {black is tied up and the white rook
threatens to sneak into black's position via the square c4.}) 36... Qg6 $2 ({
Blundering, but after} 36... Rg8 {white has to ways to conclude the game:} 37.
Bxa5 (37. b4 $5 axb4 38. Bxb4 Qg6 39. Qf3+ Qf5 40. Qb7 gxh4 41. Be7+ Kg6 42.
Qxb6 h3 43. e4 Qg4 44. g3 {wins.}) 37... Bxa5 38. Rxa5 Qb1+ 39. Kh2 Qg6 40.
hxg5+ hxg5 41. Qxg6+ {the rook endgame is hopeless.}) 37. Bxe5+ Kf7 38. Qf3+
Kg8 39. Qc6 {The black bishop has nowhere to go.} (39. Qc6 Bxe3 40. fxe3 gxh4
41. Kh2 {is not good enough.}) 1-0

