Queen's Indian - 4.Nc3 - Botvinnik variation
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 h6 6. Bh4 g5 7. Bg3 Nh5
White moves the queen's pawn to d4. Black develops the knight to f6. White plays the c-pawn to c4.
Black pushes the king's pawn to e6. White develops the knight to f3. Black advances the b-pawn to b6.
White transfers the knight to c3. Black develops the light-squared bishop to b7. White develops the dark-squared bishop to g5.
Black moves the h-pawn to h6. White moves the dark-squared bishop to h4. Black moves the g-pawn to g5.
White moves the dark-squared bishop to g3. Black jumps the knight to h5.