25.Nf6?? -+
The knight sacrifice on a wrong square!
A)25.Nh6+! g×h6 26.Q×h6 f6 27.Bc4+ +-
B)25.Nh6+ Kh8 26.B×g7+ K×g7 27.Qg5+ Kh8 28.Qf6#

25.g×f6 26.B×f6 Be4??
(26...Bf4! 27.g3 Be4! 28.g×f4 Qf5 -+)
27.Qh6?
(27.Qg5+ Mate in four moves
27...Bg6 28.Qh6 Ne6 29.R×e6)
27...Ne6?
(Qg4 -+)
28.R×e4 +-

🔸Kings Tournament Men Blitz 2017
🔸Round 3
⚪️Deac,Bogdan-Daniel
⚫️Ivanchuk,Vassily
🔸0-1

📘 26.Rd1?
16 years old Romanian grandmaster makes a strange blunder in a better position.
(26.b×c7 Q×c7 27.R×c7 N×b3 28 .Ra7 +/-)
26...B×e2+ 27.Ke1 B×d1 28.Q×d1 c×b6 0-1

🔸Kings Tournament Men Blitz 2017
🔸Round 4
⚪️Karjakin,Sergey
⚫️Ivanchuk,Vassily
🔸0-1

📘 21...e5!
With the idea of transferring the knight to f4-outpost.

🔸Kings Tournament Men Blitz 2017
🔸Round 4
⚪️Karjakin,Sergey
⚫️Ivanchuk,Vassily
🔸0-1

📘 28...Bg5!
Ivanchuk aims to play h5 and open h-file. Then he initiates a strong Kingside attack.
29.Bc3 h5 -/+

🔸Kings Tournament Men Blitz 2017
🔸Round 10
⚪️Karjakin,Sergey
⚫️Ivanchuk,Vassily
🔸1-0

📘 16.Bf1!
With the idea of preparing the pawn storm on the queen-side.
16...Bf6 17.h3 Nh6 18.c4 Nf7 19.b4

⚪️#139 (Strategy-White to Move)
🔸Fischer,Robert James
🔸Matulovic,Milan
🔸Palma de Mallorca Interzonal 1970

📘 12.Kd1!
Fischer cannot tolerate the dominating knight on d3 so he prepares for Ne1.
12.c4?! Bxc4 Black doesn't get enough compensation for the missing pawn.
12.b3
Creating another weakness on the queenside. Black has the upper hand after 12...a5 with the idea of a4.

⚫️#140 (Strategy-Black to Move)
🔸Taimanov,Mark E (2620)
🔸Fischer,Robert James (2740)
🔸Candidates 1971

27...Rf8!
Black talks peace, while secretly preparing for war. Fischer not only adds protection to the weak f5-pawn but also plans to someday shatter White's f4 blockade and unleash his kingside pawns with ...f4 himself.
27...Qxf4? 28.Qxf4 the f5-pawn is lost.
27...a6 is only wasting your time.

⚪️#141 (Strategy-White to Move)
🔸Ivanchuk,Vassily (2720)
🔸Adams,Michael (2620)
🔸Dortmund 1992

📕Unity Chess Multiple Choice 141

C: b4 – 9
👍👍👍👍👍👍👍 82%

A: N×c6 – 2
👍👍 18%

B: h3
▫️ 0%

👥 11 people voted so far.

⚪️#142 (Strategy-White to Move)
🔸Agdestein,Simen (2565)
🔸Ivanchuk,Vassily (2480)
🔸Wch U20 Baguio City 1987

📕Unity Chess Multiple Choice 142

A: Qb3 – 11
👍👍👍👍👍👍👍 65%

C: Bd4 – 5
👍👍👍 29%

B: f4 – 1
👍 6%

👥 17 people voted so far.

⚪️#143 (Strategy-White to Move)
🔸Spassky,Boris
🔸Tal,Mihail
🔸URS Spartakiad Moscow, 1959

📕Unity Chess Multiple Choice 143

A:Bg5 – 16
👍👍👍👍👍👍👍 100%

B: Bd2
▫️ 0%

C: B×f5
▫️ 0%

👥 16 people voted so far.