Again all games were drawn, despite many interesting positions! Leaders are the same – Ponomariov, Topalov and Morozevich and they have 2.5 points out of 4 games.
Results of the 4th round
Round 4 on 2013/04/21 at 14:00
GM Kasimdzhanov Rustam 2709 ½ – ½ GM Topalov Veselin 2771
GM Nakamura Hikaru 2767 ½ – ½ GM Kamsky Gata 2741
GM Radjabov Teimour 2793 ½ – ½ GM Leko Peter 2744
GM Ponomariov Ruslan 2733 ½ – ½ GM Giri Anish 2727
GM Morozevich Alexander 2758 ½ – ½ GM Karjakin Sergey 2786
GM Mamedyarov Shakhriyar 2766 ½ – ½ GM Caruana Fabiano 2772
Radjabov-Leko was a Queen’s Gambit Declined. Black King was safe in the center, even though the center was quite open. 18.Rb5-Re5 maneuver looks interesting and perhaps could give white an initiative if not more. Also, 33.g4 was an interesting path leading to advantage.
In Nakamura-Kamsky, Black equalized rather easily out of a mixture of Slav and Gruenfeld. Later on, due to better pieces, White won a pawn but Black was never in danger of losing due to active Rook.
Kasimdzhanov-Topalov was a King’s Indian with exd4 where White implemented a rare but very interesting piece sacrifice on f5. 14…d5 was a novelty which gave white the piece back by force but stopped the initiative. The position would have become equal had Black played 20…Bf8.
In Ponomariov-Giri, Black got a very solid position from the Archangel variation of Ruy Lopez. Once rooks came off the board nobody could press for an advantage anymore.
In Morozevich-Karjakin, White chose the very rare 9.Rc1 in the Classical Nimzo Indian and soon launched a pawn attack on the kingside. Still but breaking through in the center, Black’s position didn’t look dangerous. The R and bishop endgame looked equal despite the g7-pawn. Perhaps, it was worth playing 26…Rc5, preventing Bc2 and making the game more simple. The game got very complicated in the Bishops endgame and both sides missed many nice opportunities.
In Mamedyarov-Caruana game Black played an interesting novelty (14…Nc5) in the well known Gruenfeld line. 19.Rxf7 was a very nice sacrifice but it didn’t seem to work as Black King became safe again after some moves.
Today is the rest day!
Pairings of the 5th round
GM Caruana Fabiano 2772 – GM Kasimdzhanov Rustam 2709
GM Karjakin Sergey 2786 – GM Mamedyarov Shakhriyar 2766
GM Giri Anish 2727 – GM Morozevich Alexander 2758
GM Leko Peter 2744 – GM Ponomariov Ruslan 2733
GM Kamsky Gata 2741 – GM Radjabov Teimour 2793
GM Topalov Veselin 2771 – GM Nakamura Hikaru 2767