19.9.15

Gamble

Pavel Eljanov made a decisive step towards qualification in the next round at his game against Alexander Grischuk at round three of the World Cup in Baku. The Ukrainian Grandmaster was the only player to win his game with the black pieces and remains the only player with perfect score in the classical chess 5/5! Both players gambled, but Eljanov got luckier.
A game that I liked (ChessBase 13)

[Event "FIDE World Chess Cup"]
[Site "?"]
[Date "2015.09.17"]
[Round "19.7"]
[White "Grischuk, Alexander"]
[Black "Eljanov, Pavel"]
[Result "0-1"]
[WhiteElo "2771"]
[BlackElo "2723"]
[Annotator "Bojkov, Dejan"]
[PlyCount "112"]
[EventDate "2015.??.??"]
[WhiteClock "0:00:33"]
[BlackClock "0:05:54"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8.
Nc3 Bb7 9. d4 {Diagram [#] From the Reti the game transposes into the Catalan.}
Rc8 {Eljanov had played this line back in 2004. At the Olympiad he chose
instead} (9... a6 10. dxc5 Bxc5 11. Bg5 O-O 12. Rad1 Qc8 13. Qf4 h6 14. Bxf6
Nxf6 {with approximate equality in Harikrishna,P (2612)-Eljanov,P (2629)
Mallorca 2004}) 10. Qd3 $146 {A novelty. White is usually fighting for the
advantage with} ({Relevant:} 10. Bg5 cxd4 11. Qxd4 Bc5 12. Qh4 O-O 13. Rad1 Qe8
14. e4 {as in Andreikin,D (2580)-Vitiugov,N (2617) Plovdiv 2008}) 10... cxd4 {
Simple and good. Black trades a pair of light pieces and finishes the
development.} 11. Nxd4 Bxg2 12. Kxg2 Bb4 $5 {Diagram [#] An interesting idea.
Instead} (12... Bc5 13. Ndb5 a6 14. Nd6+ Bxd6 15. Qxd6 {would have transposed
to the game.}) 13. Ndb5 (13. Bd2 O-O {promises nothing at all for White.})
13... a6 {After some hesitation Eljanov decided to go to passive defense. He
could have gone for complications instead, seemingly favorable for him:} (13...
O-O $5 {with the idea} 14. Nxa7 (14. Bf4 a6 15. Nd6 Rc6 $11) (14. Rd1 a6 15.
Nd6 Rc6 (15... Bxc3 16. bxc3) 16. Nde4 Qa8 $11) 14... Bxc3 15. Nxc8 (15. bxc3
Rc5 16. Nb5 Qa8+ 17. f3 Ne5 18. Qb1 Qa4 19. Nd6 Qc6 {is great for Black.})
15... Be5 {when the white night is trapped. True, the position after} 16. f4
Bb8 17. Nd6 Nc5 18. Nxf7 Qxd3 19. exd3 Kxf7 20. Be3 {is not clear at all.}) 14.
Nd6+ Bxd6 15. Qxd6 Qe7 {Now White is a bit better, but the symmetrical
character of the positions should not allow much to him.} 16. Qd3 b5 17. Bf4 e5
18. Bg5 h6 19. Nd5 Qe6 20. Bxf6 Nxf6 21. Nxf6+ Qxf6 22. Qa3 {[%cal Ra3f8]
Diagram [#] Grischuk squeezed the maximum of the position and kept the black
king in the middle for the time being. But Black's defensive resources are
good enough to keep the balance.} Rc2 23. b3 {White would be happy to try and
win the open file, but} (23. Rac1 {is strongly met with} Qc6+ {when} 24. Qf3
Rxc1 25. Rxc1 Qxc1 26. Qa8+ Ke7 27. Qxh8 Qxb2 28. Qxg7 {Diagram [#] is equal.})
({Perhaps} 23. Rad1 $5 {was more interesting with the tactical idea} Rxe2 $2 (
{However Black can defend with} 23... Qc6+ $1 24. Kg1 Rc5 {[%cal Gc4c5,Ra3c5,
Ye8g8] Diagram [#] followed by 0-0.}) 24. Qd3 {and White wins a rook.}) 23...
Qc6+ 24. Kg1 Qc5 $1 {Nicely played! With all the heavy pieces on board king's
safety is top priority. Eljanov will compensate the pawn with activity.} 25.
Qxa6 O-O 26. a4 {Grischuk gives back the pawn but creates a passer immediately
as} (26. e3 b4 {blocks the white pawns.}) 26... Rxe2 27. a5 e4 {[%csl Ra5,Yg1]
[%cal Ge4e3,Ra4a5] Diagram [#] King's safety, remember? The threat is e4-e3,
White is forced to trade rooks.} 28. Rae1 Rxe1 29. Rxe1 f5 {The same policy,
f5-f4 is coming, the white king will be opened and Black can count on
perpetual check (at least).} 30. Qe6+ Kh7 31. Rd1 Rf6 32. Qd5 Qc2 (32... Qb4 $5
{might have been more subtle, with the idea} 33. Ra1 Qc3 34. Ra2 e3 35. a6 Qe1+
36. Kg2 e2 37. Rxe2 Qxe2 38. a7 Rf8 39. a8=Q Rxa8 40. Qxa8 $11 {Diagram [#]})
33. Rd2 Qc3 34. Ra2 Qe1+ {Eljanov is confident in his heavy pieces and
believes that the attack should be more important than a new white queen
coming on a8.} (34... e3 {would transpose to the above-mentioned line.}) 35. Kg2
f4 36. a6 {The culmination of the battle. One can be certain that time
trouble was involved when it comes to Grischuk.} f3+ 37. Kh3 Rg6 $2 {A blunder!
} ({It was time to force a draw with} 37... e3 $1 38. Qe4+ ({Or} 38. a7 exf2
39. Rxf2 Qxf2 40. a8=Q Qg2+ 41. Kg4 Rg6+ 42. Kf4 Rf6+ $11 {Diagram [#] as if}
43. Ke3 $2 Qe2+ 44. Kd4 f2 {wins for Black.}) 38... Rg6 39. Qxf3 exf2 40. Rxf2
Rxa6 41. Qf5+ Rg6) ({On the other hand bad was} 37... Qf1+ 38. Kh4 {when the
king escapes and White wins after} g5+ (38... Rg6 39. a7 Qg2 40. h3 $18) 39.
Kg4 h5+ 40. Kxg5) 38. Kh4 $2 {Grischuk returns the favor!} ({It seemd as Black
ia mating after} 38. a7 Qh1 {but White has} 39. Qf5 {[%cal Rf5h3] Diagram [#]}
Qg2+ 40. Kh4 Qxh2+ 41. Qh3 {and wins!}) 38... Qb4 {Once more Black was OK after
} (38... Rg5 39. Qd4 Qb1 {(Go find this move even without the time trouble...)}
) ({Or} 38... e3 {with similar line as above.} 39. Qxf3 exf2 40. Rxf2 Rxa6) 39.
Kh3 {With seconds on the clock Grischuk errs last.} (39. Qf5 $1 {[%csl Yg6]
[%cal Rh4h5,Rf5h7] Diagram [#] would have won instead. For example} Qxb3 (39...
e3+ 40. Kh5 $1) 40. Ra1 $1 {Better than} (40. Kh5 Qxa2 41. Qxg6+ Kh8 42. Qe8+
Kh7 43. Qxe4+ Kg8) 40... Qc3 41. Kh5 Qxa1 42. Qxg6+ Kh8 43. Qe8+ Kh7 44. Qxe4+
Kh8 45. Qb7 {when the white king will escape the checks.}) 39... Rg5 $1 40. Qf7
Qc5 {Move fourty missed a clear-cut win.} (40... Qe1 {with the threat
Qe1-h1-g2+ and mate on h2.} 41. Kh4 (41. a7 {does not help due to} Qh1 42. Qg8+
$1 {The last chance} Kxg8 43. a8=Q+ Kh7 44. Qxe4+ Rg6 45. Qf5 h5 $1) 41... Qb1
$3 {[%csl Rh4][%cal Rb3b4,Gc1c4] Diagram [#] What is the idea of this move? To.
..lure the white pawn to b4!!!} (41... Qc1 42. Qe8 Rg6 43. Qe5 {is defendable
for White.}) 42. b4 ({If the rook moves from the second rank} 42. Ra5 Qg1 {
lead to mate} 43. h3 Qxf2) 42... Qc1 43. Qe8 Qc4 {with the deadly threat
e4-e3+!}) 41. g4 Qc1 42. a7 h5 $1 {Eljanov's threats are still huge and
Grischuk has to part with his queen.} 43. Qxh5+ $1 {The best chance. Or else
Black wins after} (43. a8=Q Qf1+ 44. Kh4 Rxg4+ 45. Kxh5 Qh3# {Diagram [#]}) (
43. Qg8+ Kxg8 44. a8=Q+ Kh7 45. Qxe4+ Kh6 $1) 43... Rxh5+ 44. gxh5 Qc8+ 45. Kg3
Qa8 46. Ra6 {Both the black queen and king are arrested and this looks like a
fortress.} Kg8 47. b4 Kf8 48. Kf4 Ke7 (48... Ke8 49. h6 $1) 49. Ke3 {The last
mistake. Now the black king comes out and Black wins. Correct was} (49. h6 $1 {
Diagram [#]} gxh6 50. Rxh6 e3 ({The plan from the game would not work here}
50... Kd7 51. Ra6 Kc7 52. Ke3 Kb7 53. Ra5 Kc6 54. h4 Kd6 55. h5 $11) 51. Rh7+
Kf6 52. Kxe3 {and this seems like a draw, although Black can definitely try to
win further.}) 49... Kd7 50. Kd4 Kc7 51. Ke3 Kb7 52. Ra5 Kb6 53. Ra3 Kc6 54.
Ra5 Kd6 55. Kd4 {Leads to mate but otherwise White will sooner or later get
into zugzwang and allow the black king in} (55. h4 Ke6 56. Kf4 Kd5 57. Rxb5+
Kd4 58. Ra5 Kc3) 55... Qd5+ 56. Ke3 Ke5 {[%csl Ye3][%cal Rd5d3] Diagram [#]
Mate on d3 is coming. Caissa smiled to the brave Eljanov today!} 0-1



Report.

No comments: