2...g6 3.Bg5: against the King's Indian set-up is variation 5 of 6 in the Torre Attack course, a intermediate opening course for White (ECO A48). It runs 23 moves and begins 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O …. Black fianchettoes the bishop and castles. White takes the centre with e4 and c3 and keeps the bishop active. When Black chases it with the g-pawn, holes appear near Black's king. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. d4 – White takes space in the centre.
1... Nf6 – Black develops.
2. Nf3 – White develops.
2... g6 – Black prepares a King's Indian set-up with the bishop on g7.
3. Bg5 – White plays the Torre set-up anyway. The bishop eyes f6 and e7.
3... Bg7 – Black finishes the fianchetto.
4. Nbd2 – The knight supports a later push to e4.
4... O-O – Black castles.
5. e4 – White takes the centre at once.
5... d6 – Black gets ready to push the e-pawn.
6. c3 – White guards d4 and opens the b3 square for the queen.
6... Nbd7 – Black supports the e5 push.
7. Bd3 – The bishop develops and supports e4.
7... e5 – Black strikes in the centre.
8. O-O – White castles.
8... h6 – Black asks the bishop.
The lesson goes on for 7 more moves, each with its explanation.