The with g3 is a variation of the Neo-Grünfeld Defense, catalogued as ECO D72. The line runs 1. d4 Nf6 2. c4 g6 3. g3 d5 4. Bg2 Bg7 5. cxd5 Nxd5 6. e4 Nb6 7. Ne2, reaching the position shown below after 13 half-moves.
White holds the centre with pawns on d4 and e4. Development is level at two minor pieces each. It is Black to move after seven moves.
On the Neo-Grünfeld Defense generally: ECO D70. A chess opening with 13 known variations.
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See all 13 Neo-Grünfeld Defense variations →
The with g3 goes 1. d4 Nf6 2. c4 g6 3. g3 d5 4. Bg2 Bg7 5. cxd5 Nxd5 6. e4 Nb6 7. Ne2. It is a variation of the Neo-Grünfeld Defense and is catalogued as ECO D72.
The with g3 is ECO D72. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Neo-Grünfeld Defense.
Stockfish evaluates the position after 1. d4 Nf6 2. c4 g6 3. g3 d5 4. Bg2 Bg7 5. cxd5 Nxd5 6. e4 Nb6 7. Ne2 at +0.36 at depth 18, which is a slight pull for White, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
White holds the centre with pawns on d4 and e4. Development is level at two minor pieces each. It is Black to move.