Triloop is a puzzle where you must draw three loops – one red, one yellow, and one blue – so that each colored clue matches the combination of loop colors that surround that clue.
Each line segment of the grid can only be red, yellow, blue, or empty. Two loops can cross each other (by both going straight through an intersection), but cannot touch each other (by making opposite corners of an intersection). A loop cannot cross itself.
An easy Triloop puzzle (of Jalapeno Pepper difficulty) can be found here, along with a walkthrough.