3.Nf3 Nbd7 4.g3: the fianchetto is variation 6 of 6 in the Old Indian Defence course, a intermediate opening course for Black (ECO A54). It runs 22 moves and begins 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. g3 e5 …. White starts with 3.Nf3 and then fianchettoes with g3. Black plays ...e5 and ...c6, develops the bishop to e7 and castles. Then the rook goes to e8, the bishop drops to f8, and Black gains queenside space with ...a5. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. d4 – White takes the centre.
1... Nf6 – Black develops and watches e4.
2. c4 – White gains space.
2... d6 – The Old Indian. Black prepares e5.
3. Nf3 – White develops the kingside knight first.
3... Nbd7 – The knight supports the push to e5.
4. g3 – White prepares to fianchetto the bishop on g2.
4... e5 – Black claims the centre.
5. Bg2 – The bishop takes the long diagonal.
5... c6 – Black guards the d5 square and opens a path for the queen.
6. O-O – White castles.
6... Be7 – The bishop develops and Black gets ready to castle.
7. Nc3 – White develops.
7... O-O – Black castles.
8. e4 – White builds a big centre.
8... Re8 – The rook supports e5 and makes room for the bishop on f8.
The lesson goes on for 6 more moves, each with its explanation.
chessGM