Of course, 4.Qg8 doesn't mate. Black would block check using the N.

Doesn't 4. Qg8+ work also?

Zugzwang67, you are so right. I missed that one. Thank you.

Qg8# then ng7

Very easy :/

Thank you!

i dont get why block with bishop, why doesnt the king just move to h7

I have solved this puzzle. 

AM I TOO LATE TO BE ON THE FIRST PAGE

Why can't I move queen f8 to g8 as my last move instead of knight e2 to f4?

Because it just prolongs the mate - black would do 4. ... Ng7.

Beautiful.

easy

easy

Cool.

a tricky one. I went for 4. Qg8#, but got it in the end.

Easy!

Nice puzzle

I am not on the first page, and I was not the first one to complete this puzzle. This information is as relevant to you as those who are the first page and feel the need to inform you of such.