Chess puzzle (Equality)
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nf3 Bg4 6. Be2 e6 7. Be3 Bb4+ 8.
Nbd2 Bxf3 9. Bxf3 Bxd2+ 10. Bxd2 O-O 11. O-O N8d7 12. Bb4 Re8 13. Rc1 a5 14.
Bd2 c6 15. Bf4 Qf6 16. Bg3 Qg6 17. Bd6 Nf6 18. e5 Nfd5 19. Bh5 Qg5 20. Qf3 g6
21. Qg4 Qxg4 *
Position (FEN): r3r1k1/1p3p1p/1npBp1p1/p2nP2B/3P2q1/8/PP3PPP/2R2RK1 w - - 0 22
White to move.
Themes:  Middlegame  
Puzzle rating: 821
Best move: Bxg4