An entry in the Encyclopedia of Chess Openings (ECO A25), reached after 9 half-moves: 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3.
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3
One reply continues into a sub-variation from this position. Click any to drill deeper.