Chess puzzle (Advantage)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Samisch_Variation
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 b6 6. f3 d5 7. e3 Bb7 8. cxd5
exd5 9. Ne2 Nbd7 10. Nf4 O-O 11. g4 c5 12. h4 Qc7 13. g5 Rfe8 14. gxf6 *
Position (FEN): r3r1k1/pbqn1ppp/1p3P2/2pp4/3P1N1P/P1P1PP2/8/R1BQKB1R b KQ - 0 14
Black to move.
Themes: Pin Middlegame  
Puzzle rating: 1636
Best move: Qxf4