All I see is rxd8, qe1, rd1, qxd1#?
Blunder*
because kd7 - look at the analysis board - after rd8, with best play white has a rook endgame - best move here was Qe1
I see now, thank you
Also good is Qf1+, an intermezzo that defends the backrank with the queen. After the king takes the knight, white can then safely capture the rook on d8.
All I see is rxd8, qe1, rd1, qxd1#?