One tip off
Step 1 / 1
u': Tip of the top corner: turns counterclockwise (looking at the top corner)
The puzzle is scrambled, but only the top tip is off. On the front it is green, while the center below it is red.
The tip's red triangle is on the left face. u' turns just the tip to bring red to the front, and all three faces match.
Step 1 of 1: u'. Tip of the top corner: turns counterclockwise (looking at the top corner)