Chess puzzle (Advantage)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Three_Knights_Variation
Moves: 1. Nf3 Nf6 2. d4 e6 3. c4 Bb4+ 4. Nc3 O-O 5. e4 Nxe4 6. Bd2 Bxc3 7. bxc3 d5 8.
cxd5 exd5 9. Bd3 Bf5 10. O-O Nc6 11. c4 dxc4 12. Bxc4 Nxd4 13. Nxd4 *
Position (FEN): r2q1rk1/ppp2ppp/8/5b2/2BNn3/8/P2B1PPP/R2Q1RK1 b - - 0 13
Black to move.
Themes:  Opening  
Puzzle rating: 749
Best move: Qxd4