Retro Pento (473)

Locate the position of 12 different pentominoes in the grid. The pentominoes cannot touch each other, not even diagonally. The pentominoes may be rotated and/or mirrored. Each pentomino must be used exactly once in the grid. The borders of the pentominoes have already been given, your task is to choose the correct positions.

Reference: WPC 2016 (65)