Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 Nc6 4. c4 Be6 5. Nc3 Qd6 6. b3 Bf5 7. h3 e6 8. cxd5
Nxd5 9. Nxd5 Qxd5 10. Bc4 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Qd6 13. O-O Be4 14. Qe2
O-O 15. Bd3 Bd5 *
Position (FEN): r4rk1/ppp2ppp/2nqp3/3b4/3P4/1P1BPN1P/P3QPP1/R4RK1 w - - 7 16
White to move.
Themes:  Middlegame  
Puzzle rating: 1950
Best move: e4