Chess puzzle (Advantage)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 O-O 5. Nf3 d5 6. e3 c6 7. a3 Be7 8. Be2
dxc4 9. Bxc4 b5 10. Bd3 a6 11. O-O c5 12. dxc5 *
Position (FEN): rnbq1rk1/4bppp/p3pn2/1pP5/8/P1NBPN2/1P1B1PPP/R2Q1RK1 b - - 0 12
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1010
Best move: Qxd3