Refute the King's Gambit as Black Falkbeer Countergambit: Tricky Opening

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Alterman Gambit Guide: Black Gambits 2 (The Alterman Gambit Guide): Alterman, Boris: 9781906552961: : Books

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File:Falkbeer Countergambit of the King's Gambit Declined.jpg - Wikimedia Commons

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