Chess puzzle (Advantage)
Opening: Indian_Defense, Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. e3 g6 3. f4 d6 4. c3 Bg7 5. Be2 O-O 6. Nf3 Nbd7 7. b4 a5 8. b5 c5
9. a4 cxd4 10. cxd4 Nd5 11. O-O Nxf4 *
Position (FEN): r1bq1rk1/1p1nppbp/3p2p1/pP6/P2P1n2/4PN2/4B1PP/RNBQ1RK1 w - - 0 12
White to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1141
Best move: exf4