way too easy

Diagram #1 is BLACK (not White) to move.

Diagram #3, 2....Rxf1 is not mate but only a check as White escapes => 3.Kh2. Unless there is an invisible pawn at h2 then 2...Rxf1 is mate..

Diagram #2- most obvious mate is Qb1

 The bishop covers the h2 square

When you open the solution to the previous problem and don't close it afterwards, the solution's comment hides the eighth rank from view in the current problem.  That's probably why the mistake was made.

FAIL everyone make mistakes, even people with a rating of 2500

On puzzle number 2, Qb7 and the obvious Qb1 also mate

See the previous post.

Yea, but that was FAIL anyway

We look forward to your showing us the right way.