Subscribe to download
Eye of the Needle (Very Challenging!)

Limited with a pair of fixed lateral welders you need to assemble an 8 x 8 block of 4 inputs to form a pattern. Figuring out how to solve this puzzle is your first step. Then you will need to design and build the complex factory to make 10 of these blocks. Every piece must pass through 1 central location - the Eye of the Needle. Even if you chose not to attempt this puzzle, see if you can conceptualize how you would solve and design your factory. Good luck and have fun.