Chess puzzle (Advantage)
Opening: Alekhine_Defense, Alekhine_Defense_Other_variations
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bf4 *
Position (FEN): rnbqkb1r/ppp1pppp/3p4/3nP3/3P1B2/8/PPP2PPP/RN1QKBNR b KQkq - 1 4
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 719
Best move: Nxf4