Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Three_Knights_Game
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 O-O 5. Nd5 *
Position (FEN): rnbq1rk1/pppp1ppp/5n2/3NN3/1b2P3/8/PPPP1PPP/R1BQKB1R b KQ - 2 5
Black to move.
Themes:  Opening  
Puzzle rating: 1157
Best move: Nxd5