This is one of the best puzzles from my whole collection! Enjoy!
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Square in the bag is back in stock! Link: http://www.eurekapuzzles.com/buy/25905/square-in-the-bag
I'm a Top-10 finisher in the US Puzzle Championship and just released a logic puzzle game on Steam! The game is called RYB: http://store.steampowered.com/app/547050
Intro song: Tekvision - Mycoplasma
Intro template: /SDJGRedstoneDJ