Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 e6 5. Nbd2 Nbd7 6. c4 Bb4 7. a3 Be7 8. O-O
O-O 9. b4 c6 10. Qb3 a5 11. b5 Re8 12. bxc6 bxc6 13. c5 Ne4 14. Nxe4 *
Position (FEN): r2qr1k1/3nbppp/2p1p3/p1Pp4/3PN1b1/PQ2PN2/4BPPP/R1B2RK1 b - - 0 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1159
Best move: dxe4