Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Busch-Gass_Gambit
Moves: 1. e4 e5 2. Nf3 Bc5 3. Bc4 Bxf2+ 4. Kxf2 Nf6 5. d3 c6 6. Rf1 Qb6+ 7. Be3 *
Position (FEN): rnb1k2r/pp1p1ppp/1qp2n2/4p3/2B1P3/3PBN2/PPP2KPP/RN1Q1R2 b kq - 3 7
Black to move.
Themes:  Opening  
Puzzle rating: 1133
Best move: Ng4+