King's Gambit Declined: Mafia Defense

1.
1. e4
2. c5
2.
3. f4
4. e5

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The King's Gambit Declined: Mafia Defense is a chess opening classified under ECO code C30 (Open games). It is a variation of the King's Gambit Declined family. Step through the moves on the board above, then play the line yourself or review it with the built-in engine.