A rare Suffocation Mate. Thanks, greenpawn34.

Hi Gramps,

Actually I'm wrong. No one on RHP has fallen for that 5 mover.
There are 20+ that have fallen for a slight variation of it but they are all 6 moves.

That and many other traps can be found in the best ever book about traps:
"Combinations and traps in the opening" by Veinstein (name can be spelled differently), translated from Russian.
Tiny book but full of anectodes, like a short story collection. Story with a drummer from big band - drummer has a chess table on his big drum - is very amusing and the variation of Nimzo-indian defense is still usable.