Chess puzzle (Crushing)
Opening: Modern_Defense, Modern_Defense_Other_variations
Moves: 1. d4 g6 2. c4 Bg7 3. Nc3 Nf6 4. e3 c5 5. d5 O-O 6. Bd3 e5 7. Nge2 d6 8. Ng3 a6
9. O-O Bd7 10. a4 Qe8 11. Nge4 Nxe4 12. Nxe4 f5 13. Nxd6 Qd8 14. Qb3 Bxa4 15.
Rxa4 Qxd6 16. Qxb7 Nd7 17. Rxa6 *
Position (FEN): r4rk1/1Q1n2bp/R2q2p1/2pPpp2/2P5/3BP3/1P3PPP/2B2RK1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1106
Best move: Rxa6