Marienbad System

1.
1. d4
2. Nf6
2.
3. Nf3
4. b6
3.
5. g3
6. Bb7
4.
7. Bg2
8. c5

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The Marienbad System is a chess opening classified under ECO code A47 (Flank openings). Step through the moves on the board above, then play the line yourself or review it with the built-in engine.