Chess puzzle (Advantage)
Opening: Pirc_Defense, Pirc_Defense_Austrian_Attack
Moves: 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Na6 7. O-O c5 8. d5
Bg4 9. h3 Bxf3 10. Qxf3 Nc7 11. Bc4 a6 12. a4 Qd7 13. e5 dxe5 14. fxe5 Nfe8 15.
Bf4 Rb8 16. e6 fxe6 17. dxe6 *
Position (FEN): 1r2nrk1/1pnqp1bp/p3P1p1/2p5/P1B2B2/2N2Q1P/1PP3P1/R4RK1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1000
Best move: Qd4+