2.g3 c5: the big centre is variation 5 of 6 in the Against the Réti and King's Indian Attack course, a intermediate opening course for Black (ECO A08). It runs 20 moves and begins 1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. O-O Nc6 …. Against the King's Indian Attack Black builds a big centre with pawns on c5, d5 and e5. When White pushes to e4, Black closes the centre with ...d4. Then Black plays on the queenside and White on the kingside. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. Nf3 – White develops a knight.
1... d5 – Black takes a share of the centre.
2. g3 – The King's Indian Attack. White puts the bishop on g2 and plans to push to e4.
2... c5 – Black grabs more space in the centre.
3. Bg2 – The bishop aims at the centre.
3... Nf6 – Black develops and guards d5.
4. O-O – White castles.
4... Nc6 – The knight develops and gets ready to support e5.
5. d3 – White prepares the e4 push.
5... e5 – Black builds a big centre with pawns on c5, d5 and e5. It is a King's Indian with the colours reversed.
6. Nbd2 – White adds support for the e4 push.
6... Be7 – Black develops calmly and gets ready to castle.
7. e4 – The key move of the King's Indian Attack. White hits the d5 pawn.
7... O-O – Black castles and keeps the tension in the centre.
8. Re1 – The rook adds support to e4.
8... d4 – Black closes the centre and gains space. Black's play is on the queenside.
The lesson goes on for 4 more moves, each with its explanation.
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