🔺1...c5
Vassily thought for this move 42 minutes🔺

🔸Fide World Cup 2017
🔸Round 5 Game 1
⚪️Levon Aronian
⚫️Vassily Ivanchuk
🔺1-0

🔺1...Ndf6?
it was better for black to complete his kingside development as soon as possible (Ngf6-Be7)🔺

🔸Fide World Cup 2017
🔸Round 5 Game 1
⚪️Levon Aronian
⚫️Vassily Ivanchuk
🔺1-0

🔺1.a4! b4

Weakening the c4 square To transfer the Knight
And after b4, The c5 pawn is a good target for the attack(Be3-Rac1)🔺

🔸Fide World Cup 2017
🔸Round 5 Game 1
⚪️Levon Aronian
⚫️Vassily Ivanchuk
🔺1-0

🔺1.Nf3!
With idea to transfer the knight to the c4 outpost or e4 square.🔺

🔺 Round 5 Game 2 🔺

🔸Fide World Cup 2017
🔸Round 5 Game 2
⚪️Wesley So
⚫️Vladimir Fedoseev
🔺1-0

🔸Fide World Cup 2017
🔸Round 5 Game 2
⚪️Liren Ding
⚫️Richard Rapport
🔺1-0

🔹🔺 The interesting and tactical moments of the World Cup Round 5 Game 2 🔹🔺

🔸Fide World Cup 2017
🔸Round 5 Game 2
⚪️Vachier Lagrave
⚫️Peter Svidler
🔺½-½

1.Nd4
But 1.Qd2! was stronger, with threats: (N.g7-f5-Q.h6)

🔸Fide World Cup 2017
🔸Round 5 Game 2
⚪️Wesley So
⚫️Vladimir Fedoseev
🔺1-0

🔺1...a6
With idea to take control over the proper squares of the white queen🔺

🔸Fide World Cup 2017
🔸Round 5 Game 2
⚪️Wesley So
⚫️Vladimir Fedoseev
🔺1-0

🔺1.Re2
The standard idea of doubling rooks in only open file on the board🔺

🔸Fide World Cup 2017
🔸Round 5 Game 2
⚪️Wesley So
⚫️Vladimir Fedoseev
🔺1-0

1.Nd2 with the idea of sending the knight to the active c5 square.