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⚪️#123 (Strategy-White to Move)
🔸Karjakin,Sergey (2767)
🔸Carlsen,Magnus (2868)
🔸Norway Chess 1st Stavanger 2013
17.b4!
One idea behind playing b4 is that moves like ...c5 can be met with bxc5, followed by d5, creating a passed d-pawn.
17.dxe5
We should keep tension in the center. Masters handle the pawn tension better than the amateurs, knowing how to keep the pawns on the board longer when to block them and at what moment to get rid of them. Releasing the tension too soon may create problems and here release black bishop on f8.
17.Ra7? Qb6=/+
⚫️#124 (Strategy-Black to Move)
🔸Carlsen,Magnus (2862)
🔸Aronian,Levon (2813)
🔸Sinquefield Cup 1st Saint Louis 2013
19...Rb5
Aronian defends e5 tactically while increasing pressure on a5.
19...Nd7
The direct defence is also possible but lets white to complete his development with 20.Be3.
19...b3? and white achieves control over the important d4-square after 20.c3.
⚪️#125 (Strategy-White to Move)
🔸Botvinnik,Mikhail
🔸Smyslov,Vassily
🔸World-ch19 1954
📕Unity Chess Multiple Choice 125

A: g4 – 17
👍👍👍👍👍👍👍 77%

C: Bd2 – 3
👍 14%

B: g3 – 2
👍 9%

👥 22 people voted so far.
⚪️#126 (Strategy-White to Move)
🔸Botvinnik,Mikhail
🔸Euwe,Max
🔸World-ch17 The Hague/Moscow 1948
📕Unity Chess Multiple Choice 126

B: f3 – 30
👍👍👍👍👍👍👍 86%

C: B×f6 – 4
👍 11%

A: Rd1 – 1
▫️ 3%

👥 35 people voted so far.
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🔸FIDE Grand Prix Palma 2017
🔸Round 1
⚪️Inarkiev,Ernesto (2683)
⚫️Li,Chao b (2741)
🔸1-0
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🔸FIDE Grand Prix Palma 2017
🔸Round 4
⚪️Aronian,Levon (2801)
⚫️Giri,Anish (2762)
🔸1-0
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🔸FIDE Grand Prix Palma 2017
🔸Round 2
⚪️Levon Aronian (2801)
⚫️Inarkiev,Ernesto (2683)
🔸1-0
⚪️#125 (Strategy-White to Move)
🔸Botvinnik,Mikhail
🔸Smyslov,Vassily
🔸World-ch19 1954
10.g4!
Now, this move is routine, whereas at the time it was a startlingly new plan for White, who attacks with a kingside pawn storm. His once out-of-play rook now looks well posted on h1. He also intends to drive away Black's Knight on f6, prepares for the e4 move.
The moves10.g3 and10.Bd2 are too slow for this position.
⚪️#126 (Strategy-White to Move)
🔸Botvinnik,Mikhail
🔸Euwe,Max
🔸World-ch17 The Hague/Moscow 1948
20.f3!
Dual principles followed: Open the game when leading in development, and also when you own the bishop pair. For the pawn, Botvinnik gets two bishops versus two knights in an open position and the potential for a kingside attack - more than enough compensation.
20.Rd1
After this move black can get rid of white's light-squared bishop with 20...Be6 21.Bxe6 (21.Bb1 Bb3) Qxe6.
20.Bxf6?
In general, the two bishop advantage is worth half a pawn, while double pawns are only a minor disadvantage. You should also consider that white is a pawn down.
⚫️#127 (Strategy-Black to Move)
🔸Anand,Viswanathan (2775)
🔸Carlsen,Magnus (2862))
🔸World-ch 2013