7... Kh8!?
Grischuk clears the g8-square for his knight to open the path of the f-pawn to advance to f5.
8.Nc3 Ng8 9.Nd5 f5 10. h3 fxe4 11.dxe4 Nf6 12.a5 a6 13.Ra3 Be6 14.Nxf6 Bxc4 15.Nd5 Bb5 16.Be3 Qd7

⚪️#653 (Strategy-White to Move)
🔸Sokolov,I
🔸Emms,J
🔸Hastings, 1998

In this position, both sides have their respective triumphs. White possesses the two bishops and more space, whereas Black has the superior pawn structure.
13.f4!
Preparing f4-f5 in order to clear the position for the bishop pair. In such double-edged positions, the player with weaknesses should act rapidly, before the opponent manages to consolidate.
13...Nbd7 14.Qc2 d5?
A tempting counter-strike directed at the king on e1. However, it soon transpires that it is the black king who will suffer from the opening of lines.
Considerable safer was 14...Nf8! 15.f5 Kh8 16.fxe6 fxe6 with just a slight advantage for White.
15.f5! exf5 16.Qxf5 dxc4 17.Bxc4
Now it becomes evident that the a2-g8 diagonal is a much more relevant factor than the e-file, since the white king could hide on f1 at any moment, whereas Black has no light-squared bishop that can challenge the enemy on c4.

⚪️#654 (Strategy-White to Move)
🔸Seirawan,Y
🔸Sosonko,G
🔸Bad Kissingen, 1981

White is slightly better due to the badly placed black king that obstructs the rook on a8. He should now create some activity before Black manages to coordinate his forces.
13.h3!
Seirawan prepares g2-g4-g5 in order to gain space and access to the e4-square for his knight.
13...h5
13...Bf8 14.Bxf8 Rxf8 15.g4 Be6 16.g5 Nd7 17.Bg4! White obtains some advantage.
14.g4! hxg4 15.hxg4
This pawn sacrifice is mainly based on the fact that the clearance of the h-file favors White, due to the disconnected black rooks.
15...Bxg4 16.Rxh8+ Bxh8 17.Be7!
Generally speaking, the side that possesses the initiative should play actively, creating new threats whenever possible. Here Black is faced with the double threat of 18 Rd8+ and 18 Bxf6.

⚪️#655 (Strategy-White to Move)
🔸Sasikiran,K
🔸Iljushin,A
🔸FIDE World Cup, Khanty Mansyisk, 2005

Unity Chess Multiple Choice 655
public poll

A: B×e4 – 5
👍👍👍👍👍👍👍 63%
Morteza, Gavin, Nikhil, Rachel, Michael

B: c5 – 2
👍👍👍 25%
@Sophia_Peng, Zhenrui

C: c×d5 – 1
👍 13%
@RichardPeng

👥 8 people voted so far.

⚪️#656 (Strategy-White to Move)
🔸Hellsten,J
🔸Olesen,M
🔸Malmo, 1997

Unity Chess Multiple Choice 656
public poll

B: f4 – 8
👍👍👍👍👍👍👍 89%
Morteza, @Benjamin28, Gavin, Nikhil, @Sophia_Peng, @RichardPeng, Rachel, Michael

A: e4 – 1
👍 11%
Zhenrui

C:Nde4
▫️ 0%

👥 9 people voted so far.

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