Chess puzzle (Advantage)
Opening: Pirc_Defense, Pirc_Defense_Other_variations
Moves: 1. e4 d6 2. d4 g6 3. Nf3 Bg7 4. Be3 Nd7 5. Nc3 Ngf6 6. Bc4 e6 7. O-O O-O 8. b4
e5 9. a4 Qe7 10. d5 c6 11. b5 Nc5 12. Bg5 Ncxe4 *
Position (FEN): r1b2rk1/pp2qpbp/2pp1np1/1P1Pp1B1/P1B1n3/2N2N2/2P2PPP/R2Q1RK1 w - - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1181
Best move: Nxe4