Chess puzzle (Advantage)
Opening: Modern_Defense, Modern_Defense_Averbakh_System
Moves: 1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 c5 5. Nf3 Nc6 6. Be3 Bg4 7. Be2 *
Position (FEN): r2qk1nr/pp2ppbp/2np2p1/2p5/2PPP1b1/2N1BN2/PP2BPPP/R2QK2R b KQkq - 5 7
Black to move.
Themes:  Opening  
Puzzle rating: 1744
Best move: Bxf3