Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Bf5 4. Nc3 Nxd5 5. Nxd5 Qxd5 6. Bf4 Nc6 7. e3 e6 8.
a3 Nb4 9. Qa4+ c6 *
Position (FEN): r3kb1r/pp3ppp/2p1p3/3q1b2/Qn1P1B2/P3P3/1P3PPP/R3KBNR w KQkq - 0 10
White to move.
Themes:  Opening  
Puzzle rating: 1648
Best move: axb4