Chess puzzle (Advantage)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 d5 5. c5 O-O 6. a3 Bxc3 7. Bxc3 Ne4 8. Qc2
b6 9. g3 Na6 10. cxb6 cxb6 11. f3 Nxc3 12. Qxc3 Bb7 13. b4 Rc8 14. Qd2 Bc6 15.
e3 Nb8 16. Ba6 *
Position (FEN): 1nrq1rk1/p4ppp/Bpb1p3/3p4/1P1P4/P3PPP1/3Q3P/R3K1NR b KQ - 2 16
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 889
Best move: Nxa6