I'm not going to give you a picture here because the array keeps changing when you take away the tiles, but it's pretty simple. Click on the tiles in this order:
-- Yellow group
-- All blue groups
-- All orange groups
-- Two large green groups (leave the two single green squares)
-- Two groups of 3 pinks (leave all the rest)
-- One group of 3 red in the center (leave the two single red squares)
-- All pink groups
-- Green group
-- Red group
