The Traffic Light Game

Hi everyone! This game is from Kasparov-Kengis, played when Kasparov was only a teenager.
In the position it is White to move. Kasparov played one of the 3 moves, and then Black resigned.

Green: e4
Red: Re1
Yellow: Ng5

Bonus question:
Can anyone figure out how I came up with the clever name of this game?
Check the "comments" for the answer.