The hardest puzzle ever seen- Answer

This blog is all about the answer to "The hardest puzzle ever seen". If you have not read that blog then I prefer you to read it first. If you don't read it then you'll not enjoy this blog.

Many people tried hard to solve the puzzle. The puzzle was very hard. Some people asked me "Mate in how many moves?". The reason I had not posted the number of moves to mate is to make the puzzle even harder.

The puzzle was able to be solved by only one person - IM chesskingdreamer.

If you have any questions, doubts about the solution let me know in the comments. 
And also rate the difficulty of this puzzle up to 10 stars.