1)... Be7! [It is the key move my good friend]
2)Rxe7 Bf1
3)Rxf1 Rxh4 # if [3)Re6+ dxe6 ó 3)Rxh7+ Kxh7 In both cases it cannot be avoided 4)... Rxh4 #]
2)Rf6+ Bxf6 if [2)Rxh7+ Kxh7]
3)c8=D Rxh4+ if [3)Kg1 Bh3+ 4)Kf2 Bxh4 # ó 4)Kh2,Kh1 Rxh4 and it is impossible to prevent 5)... Bf1 #]
4)Kg1 Rh1+
5)Kf2 Bh4 #
I think I did not miss an interesting variant. Teacher, I admire your prowess when playing and this problem was positionally amazing ...
Excuse me master is Bf1 I will edit the comment
No problem!
Finally:
Very well!
You showed enough correct variations to be declared as winner of this round.
Congratulations @yazp!
I am considering to make a 3Speak video to explain the different variations of the solution.
no doubt I will be waiting to see how you approach positional ideas and themes ... simply chess is artistically beautiful.
1 ... Be7
2. Rxe7 Bf8 is an impossible move. :)
Furthermore, I would like to ask you how to continue after
1. ... Be7
2. Kg1 ?
1)...Be7
2)Kg1 Bh3+
3)Kf2 Bxh4 #
1)...Be7
2)Kg1 Bh3+
3)Kh2 Bf5
4)Rxf5 Rxh4 # if [(4)Rxh7+ Kxh7 followed by 5)... Rxh4) or (4)Rg7 Rxg7 followed by 5)... Rxh4) ]
Excuse my clumsiness I don't usually write chess games for a long time...
I edited this comment as the downvote has just been removed.