Chess puzzle (Advantage)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Classical_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nf6 5. a3 Bxc3+ 6. Qxc3 O-O 7. e3 Ne4 8.
Qc2 c5 9. cxd5 cxd4 *
Position (FEN): rnbq1rk1/pp3ppp/4p3/3P4/3pn3/P3P3/1PQ2PPP/R1B1KBNR w KQ - 0 10
White to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1109
Best move: Qxe4