Chess puzzle (Crushing)
Opening: Slav_Defense, Slav_Defense_Three_Knights_Variation
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bf5 5. Bf4 e6 6. a3 Bd6 7. Bg3 Bxg3 8. hxg3
Nbd7 9. e3 O-O 10. Bd3 Bxd3 11. Qxd3 Nb6 12. c5 Nc4 13. O-O-O b6 14. e4 bxc5
15. e5 Qb6 16. Na4 Qb5 *
Position (FEN): r4rk1/p4ppp/2p1pn2/1qppP3/N1nP4/P2Q1NP1/1P3PP1/2KR3R w - - 3 17
White to move.
Themes:  Middlegame  
Puzzle rating: 2021
Best move: exf6