Chess puzzle (Advantage)
Opening: Ponziani_Opening, Ponziani_Opening_Jaenisch_Counterattack
Moves: 1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 exd4 5. e5 Qe7 6. cxd4 d6 7. Bb5 Bd7 8. O-O
dxe5 9. Bxc6 Bxc6 10. Nxe5 O-O-O 11. Re1 Qb4 12. Nxf7 Rxd4 13. Nd2 Rg8 14. a3
Qb6 15. Ne5 Bd6 16. Nxc6 Qxc6 17. Qf3 Qd7 18. b4 Rf8 19. Nb3 *
Position (FEN): 2k2r2/pppq2pp/3b1n2/8/1P1r4/PN3Q2/5PPP/R1B1R1K1 b - - 2 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 2147
Best move: Rd3