Looks like a forced mate to me. Smothering him is a good way to do it. Nothing he can do about it. But, White made the wrong moves.
Daily Puzzle Submissions! *Be Involved*

Guys I think giving a name to your puzzles would be useful- otherwise people don't know what to look for: a combination, a mate in 1, 2, 10, etc. Just a request

some of these puzzles are sooo random- please give TITLES to them so there is some way to play them. Otherwise it's like, click and drag until something happens!
True, Nxa2 isn't forced, but 2. Kxa2 is mated by 2... Ra7#. Since the puzzler doesn't 'make' white's move... you simply have to respond to the move made.
The smothered mate isn't forced, but it is a forced mate in 2.
thats right it's a force mate nothing u can do about it