Neo-Grünfeld Defense: with g3 is a chess opening with the ECO code D73, part of the Neo-Grünfeld Defense family. It goes 1. d4 Nf6 2. c4 g6 3. g3 d5 4. Bg2 Bg7 5. Nf3. White opens with 1. d4 (the queen's pawn) and Black answers 1... Nf6. After 9 moves it is Black to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
The moves
1. d4 – White plays the pawn to d4
1... Nf6 – Black plays the knight to f6
2. c4 – White plays the pawn to c4
2... g6 – Black plays the pawn to g6
3. g3 – White plays the pawn to g3
3... d5 – Black plays the pawn to d5
4. Bg2 – White plays the bishop to g2
4... Bg7 – Black plays the bishop to g7
5. Nf3 – White plays the knight to f3
About the Neo-Grünfeld Defense
Black uses Grünfeld ideas (...g6, ...Bg7, ...d5) when White has played g3 or f3 instead of Nc3. Black still attacks White's centre.
...d5 challenges the centre and frees the knight to hop to d5 or b6.