Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qe5+ 4. Be2 Qg5 5. Nf3 Qxg2 6. Rg1 Qh3 7. Rg3 Qh5
8. Nd4 e5 9. Bxh5 exd4 10. Nb5 c6 11. Nc7+ Kd8 12. Nxa8 Nd7 13. Qf3 f6 14. Bg4
b5 15. Bxd7 Bxd7 16. Rg4 f5 17. Rxd4 Nf6 18. Qxf5 Bc5 19. Rd3 Re8+ 20. Kf1 g6
21. Qxf6+ Kc8 22. Qf7 Bh3+ 23. Kg1 *
Position (FEN): N1k1r3/p4Q1p/2p3p1/1pb5/8/3R3b/PPPP1P1P/R1B3K1 b - - 4 23
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1069
Best move: Re1#