Why this game cannot be a named puzzle?

It's true that only one move can win in this situation LOL. If this is a puzzle, how much rating is possible?

It is a Puzzle (I just had to solve it to post this).

Nd6#

1600

gbgnv fv6um vni7t cm8vm
hvf kv

Because it's too easy to solve

don't feel embarrassed or silly.. sometimes it can be a tough puzzle for <100 rated players xd

There exists a similar "variant" in the Caro-Kann Defence: 1. e4 c6 2. d4 d5 3. Nc3 de4 4. Nxe4 Nd7 5. Qe2 Ngf6 6. Nd6#.

@Marcin2 yes, it's called Caro-Kann: Karpov variation

Similar smothered mate with pinning Queen often happens in the Budapest.