Chess puzzle (Advantage)
Opening: Rubinstein_Opening, Rubinstein_Opening_Other_variations
Moves: 1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 c5 5. b3 Nc6 6. a3 Bd6 7. Bb2 cxd4 8. exd4
O-O 9. O-O b6 10. Nbd2 Bb7 11. Ne5 Nd7 12. f4 f6 13. Nxd7 Qxd7 14. Qh5 g6 15.
Qh3 Rae8 16. Rad1 Qg7 17. c4 Na5 18. Bc2 dxc4 *
Position (FEN): 4rrk1/pb4qp/1p1bppp1/n7/2pP1P2/PP5Q/1BBN2PP/3R1RK1 w - - 0 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1789
Best move: b4