ECO A47

Marienbad System

Marienbad System is a chess opening classified under ECO A47. Its defining line here is 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5.

Marienbad System — board position♜♞♛♚♝♜♟♝♟♟♟♟♟♟♞♟♟♞♟♟♟♟♟♟♝♟♜♞♝♛♚♜

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5

Explore this opening ▸Add to my repertoireOpen in analysis

The diagram shows the position after 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5. Play through it move by move in the interactive explorer.

Opening name, ECO code, and main line come from the Lichess open chess openings dataset.