1.Rxf7 Qxf7 2.Bxe6 is totally losing for Black, but what is White's plan after 1....Kxf7? I tried 2.Rf1+ Ke8 but this didn't lead anywhere.

congratulations:)))

Rxf7

well i didn't calculate anything i must confess:))) but for me the only move is some
sacrifice and ok i was also not very sure but what else 1.c3 or 1.Rf4 but both are
slow and in both cases the white whitesquare bishop must leave the diagonal
a2-g8 so somehow Rxf7 was the only active move for me it might be wrong also:)))
1.Rxf7 Kxf7
2.Rf1+ Ke8
and now many moves i'm lazy to think today:))) i'm sorry
3.Qh7,Qg4,Bxe6... g6 is weak white squares also and the king is in the center
the f file is under control so there migth be something:)))

Perhaps I found it. I noticed that we have an easy mate without the black queen, so I applied the remove-the-defender motif with 2.Bg5!. If Black takes the bishop, it will be mated soon after 3. Qxe6+ Ke8 4.Rf1+.

I think the only other option is to give up the queen.