Chess puzzle (Advantage)
Opening: Pirc_Defense, Pirc_Defense_Classical_Variation
Moves: 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bf4 c6 6. Qe2 O-O 7. O-O-O b5 8. e5
dxe5 9. dxe5 Qa5 *
Position (FEN): rnb2rk1/p3ppbp/2p2np1/qp2P3/5B2/2N2N2/PPP1QPPP/2KR1B1R w - - 1 10
White to move.
Themes:  Opening  
Puzzle rating: 1079
Best move: exf6