Chess puzzle (Advantage)
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bf5 5. Qb3 Qb6 6. g3 e6 7. Bg2 Nbd7 8. O-O
Bd6 9. Nh4 Bg6 10. Nxg6 hxg6 11. Rd1 dxc4 12. Qxc4 O-O-O 13. a4 Ng4 14. a5 Qb4
15. Qd3 Rxh2 16. a6 Rdh8 17. axb7+ Qxb7 18. Ra6 Rh1+ 19. Bxh1 Rxh1+ 20. Kg2 c5+
21. e4 *
Position (FEN): 2k5/pq1n1pp1/R2bp1p1/2p5/3PP1n1/2NQ2P1/1P3PK1/2BR3r b - - 0 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1865
Best move: Rh2+