Chess puzzle (Equality)
Moves: 1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 e4 5. a3 d5 6. cxd5 cxd5 7. Nc3 Nc6 8. Nh3
Bd6 9. Bg5 Be6 10. Nf4 h6 11. Bxf6 Qxf6 12. e3 Bxf4 13. gxf4 Qg6 14. Rg1 Bh3
15. Kf1 Bxg2+ 16. Rxg2 Qf5 17. Qb3 Ne7 18. Qxb7 Rc8 19. Nb5 Rd8 20. Rc1 Ng6 21.
Rc5 *
Position (FEN): 3rk2r/pQ3pp1/6np/1NRp1q2/3PpP2/P3P3/1P3PRP/5K2 b k - 6 21
Black to move.
Themes: Defensive Move Middlegame  Castling
Puzzle rating: 1954
Best move: O-O