User blog comment:Flockky II/Flockky's "Boosters To The Rescue!" Level Design Contest/@comment-35526207-20161206115631/@comment-14966981-20161208105727

Haha, that's better when played out, especially you nerfed your entry to 4 colours. But still, I'll accept your impossible one. ;)

I'll try playing that one if I have enough time.