Marienbad System (A47)
1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5
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Marienbad System (ECO A47) is a chess opening starting with 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5. See its main lines, common continuations, and win/draw/loss statistics from real games.
Common Continuations
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Variations