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Hello everyone! I'm continuing this section while Ruslan is on holiday.
We're in the dog days of summer and the chess action is hot! This month we take a look at the theoretical developments from a number of recent events.

Download PGN of July '11 1 d4 d5 games

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The Main Slav 11...g5 [D17]

Cabrera - Petrosian: With 15...Qd6 Black invites an endgame that Bu Xiangzhi successfully defended in 2009:











Petrosian played accurately, but his opponent did not.



Moscow Variation 9. Ne5!? [D43]

Morozevich - Caruana: The novelty 13.Qf4 attempts to deprive Black's queen of the f6 square:











Apparently Caruana had already analyzed this move at home, and prevailed in a complicated struggle.



Anti-Meran 8...dc4 9.Bxc4 b5 10.Bd3 [D46]

Ponomariov - Giri: Giri ventures 11...b4:











drawing comparisons to the Lundin Variation, after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 b4.



Meran 8...Bb7 [D48]

Carlsen - Shirov In the less common 12...Qc7 13.Nd4 line, Shirov chooses to close the center with 13...e5. Carlsen sinks his knight into h6, and restricts Black's play with 16.g3!:











, then switches his focus to the queenside.



QGD Lasker Defence [D56]

Aronian - Harikrishna: I know you're sick of the QGD after last month's update, but Aronian's total lack of respect for the Lasker Variation deserves an encore!:











With g4 to follow.



Catalan Opening [E04-05]

Dzagnidze - Zatonskih: 16...Bd7! was first seen in the spectacular game Mikhalevski - Robson in early July:











Dzagnidze attempts an improvement, but also finds herself in trouble.

Sasikiran - Hou Yifan: White has good chances for an enduring edge after 12.Rac1:











Perhaps 8.a4 will once again find favor with the elite.



Until next month, John

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If you have any questions, then please post a message at the 1 d4 d5 Forum, or subscribers can email me at ruslan@chesspublishing.com.