Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. Nf3 Bg4 6. Be2 Nc6 7. c3 O-O-O
8. d4 e5 9. dxe5 Qe4 10. Qb3 Nxe5 11. Be3 Nxf3+ 12. gxf3 Bxf3 13. Rg1 Bc5 14.
Rg3 Bxe2 15. Kxe2 Qd3+ 16. Ke1 Rhe8 17. Rd1 Qe4 18. Rxd8+ Rxd8 19. Qxf7 Qh1+
20. Ke2 *
Position (FEN): 2kr4/ppp2Qpp/8/2b5/8/2P1B1R1/PP2KP1P/7q b - - 2 20
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 975
Best move: Qd1#