World Cup R5.1: Ivanchuk leads against Radjabov

9/10/2011 – Three games were decided quickly – in 14, 16 and 28 moves. But even short games can be of considerable theoretical interest, as the annotation of Svidler-Polgar by GM Efstratios Grivas clearly show. There was one decisive game: Taimour Radjabov overlooked a tactical shot by Vassily Ivanchuk and, playing a queen for rook and bishop down, lost in 41 moves. Illustrated report.

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The tournament is taking place in the Ugorian Chess Academy in the very heart of Khanty-Mansiysk, which has hosted three previous World Cups: 2005, 2007, and 2009. The 128 participants hail from 46 different countries, and are playing for a total prize fund of US $1.6 million. In addition the first three finisher get tickets to the Candidates tournament in the next World Championship cycle.

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Round five game one

The game between Ruslan Ponomariov (Ukraine, picture above) and Vugar Gashimov (Azerbaijan) was the first to end. Ponomariov was clearly not in the mood for a long game after yesterday's tiring tie-break. When he realized that his opponent was well prepared for the opening, he started to repeat the moves, and a draw was agreed in about 40 minutes after the start of the round.

[Event "FIDE World Cup 2011"] [Site "Khanty-Mansiysk RUS"] [Date "2011.09.09"] [Round "5.1"] [White "Ponomariov, Ruslan"] [Black "Gashimov, Vugar"] [Result "1/2-1/2"] [ECO "E15"] [WhiteElo "2764"] [BlackElo "2760"] [PlyCount "27"] [EventDate "2011.08.28"] 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Nh4 g6 8. Nc3 Bg7 9. O-O O-O 10. Bg5 Qe8 11. Bf4 Qd8 12. Bg5 Qe8 13. Bf4 Qd8 14. Bg5 1/2-1/2

Draw – after just 14 moves: Vugar Gashimov vs Ruslan Ponomariov

GM Judit Polgar, 2699, of Hungary at the start of her first round five game against...

... the many times (and current) Russian Champion Peter Svidler, rated 2739

The game between Peter Svidler (Russia) and Judit Polgar (Hungary) lasted little longer. In a rare line of the Sicilian Black quickly carried out the thematic d7-d5 break and almost equalized. Perhaps White could still fight for a small advantage, but Svidler allowed a bishop sacrifice on move 14, and Judit didn't miss her chance to force a draw by perpetual. This game has been annotated for us by GM Efstratios Grivas.

Alexander Grischuk (Russia, picture above) created certain problems for David Navara (Czech Republic): Black had an isolated pawn on c5 after the opening, which could potentially have become weak. However, White failed to block and attack it properly. Navara rearranged his pieces and managed to trade the pawn, after which the game was a clear draw.

After the black piece draw David Navara advances to favourite

[Event "FIDE World Cup 2011"] [Site "Khanty-Mansiysk RUS"] [Date "2011.09.09"] [Round "5.1"] [White "Grischuk, Alexander"] [Black "Navara, David"] [Result "1/2-1/2"] [ECO "E15"] [WhiteElo "2746"] [BlackElo "2722"] [PlyCount "55"] [EventDate "2011.08.28"] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Nc3 O-O 8. Rc1 Ba3 9. Rc2 Nc6 10. Bc1 Bxc1 11. Rxc1 d5 12. cxd5 Nxd5 13. Bg2 Nxc3 14. Rxc3 Nb4 15. a3 Nd5 16. Rc2 Qe7 17. Qa1 Rac8 18. O-O c5 19. Rfc1 Rc7 20. dxc5 Rxc5 21. Rxc5 bxc5 22. Nd2 Rc8 23. Bf3 h6 24. h4 Nb6 25. Qe5 c4 26. bxc4 Qxa3 27. Ra1 Qb4 28. Qa5 1/2-1/2

The only decisive result was achieved in the game between Vassily Ivanchuk (Ukraine, picture above) and Teimour Radjabov (Azerbaijan). Radjabov, playing Black, opted for the sharp Dragon Variation of the Sicilian Defense, showing his inclination to engage in a major battle. Ivanchuk deviated from the main theoretical lines, and the game entered a maneuvering stage with a slight edge to White. Black made a mistake on the kingside, carelessly advancing his pawns, and then overlooked an unexpected tactical blow on the 28th move.

Radjabov (above) had to give up a queen, but did not get full compensation for it, and resigned after the 40th move.

[Event "FIDE World Cup 2011"] [Site "Khanty-Mansiysk RUS"] [Date "2011.09.09"] [Round "5.1"] [White "Ivanchuk, Vassily"] [Black "Radjabov, Teimour"] [Result "1-0"] [ECO "B70"] [WhiteElo "2768"] [BlackElo "2744"] [PlyCount "81"] [EventDate "2011.08.28"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. g3 Nc6 7. Nde2 Bg7 8. Bg2 Bd7 9. h3 h5 10. a4 Qc8 11. Be3 Be6 12. Nd5 O-O 13. Rc1 Re8 14. b3 Rb8 15. c4 b6 16. Nef4 Bd7 17. O-O Nh7 18. Kh2 h4 19. g4 Qd8 20. Ne2 e5 21. Qd2 Be6 22. f4 exf4 23. Nexf4 Rb7 24. Rf2 Rd7 25. Rcf1 Ne5 26. Kh1 Nc6 27. Ne2 g5 $2 { Black has not seen what is coming.} 28. Nf6+ Nxf6 $2 (28... Bxf6 29. Rxf6 d5 { may have offered more resistance.}) 29. Bxg5 Nxg4 30. Bxd8 Nxf2+ 31. Rxf2 Rdxd8 {Black has given a queen for rook and bishop. But there is not enough compensation for this material loss.} 32. Qg5 Bc8 33. Nf4 Re5 34. Qxh4 Rde8 35. Nh5 R8e6 36. Qf4 f6 37. Bf3 Rg5 38. Bg4 Rxh5 39. Bxh5 Ne5 40. Rg2 Kf8 41. Bg4 1-0

Results of round five

 Svidler, Peter (RUS)
 Polgar, Judit (HUN)
 Ivanchuk, Vassily (UKR)
 Radjabov, Teimour (AZE)
 Grischuk, Alexander (RUS)
 Navara, David (CZE)
 Ponomariov, Ruslan (UKR)
 Gashimov, Vugar (AZE)

Remaining schedule of the World Chess Cup 2011

Date Day Time   Rounds
10.09.2011 Saturday 15:00 Round 5, game 2
11.09.2011 Sunday 15:00 Tiebreak
12.09.2011 Monday 15:00 Round 6, game 1
13.09.2011 Tuesday 15:00 Round 6, game 2
14.09.2011 Wednesday 15:00 Tiebreak
15.09.2011 Thursday   Free Day
16.09.2011 Friday 15:00 Round 7, game 1
17.09.2011 Saturday 15:00 Round 7, game 2
18.09.2011 Sunday 15:00 Round 7, game 3
19.09.2011 Monday 15:00 Round 7, game 4
20.09.2011 Tuesday 11:00 Tiebreaks, Closing
21.09.2011 Wednesday   Departure


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