Chess puzzle (Advantage)
Opening: Indian_Defense, Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. c3 d5 3. Bf4 Bf5 4. e3 e6 5. Nd2 Bd6 6. Ngf3 Bxf4 7. exf4 Ne4 8.
g3 Nd7 9. Bg2 O-O 10. O-O Ndf6 11. Ne5 c5 12. Nxe4 Nxe4 13. dxc5 Nxc5 14. Re1
Qc7 15. Qd4 h6 16. Rac1 a5 17. a3 Rfc8 18. b4 *
Position (FEN): r1r3k1/1pq2pp1/4p2p/p1npNb2/1P1Q1P2/P1P3P1/5PBP/2R1R1K1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1350
Best move: Nb3