Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 b6 4. Nf3 Ba6 5. b3 dxc4 6. e4 cxb3 7. Bxa6 Nxa6 8.
axb3 Nb4 9. O-O e6 10. Ba3 Nc6 11. Bxf8 Kxf8 12. Qd3 Nb4 13. Qc4 Qe7 14. Ra4 a5
15. Rfa1 c5 16. dxc5 Qxc5 *
Position (FEN): r4k1r/5ppp/1p2pn2/p1q5/RnQ1P3/1PN2N2/5PPP/R5K1 w - - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1949
Best move: Rxb4