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Re:Show HN: Solving Rush Hour, the 6x6 Sliding Block Puzzle by fogleman on Thursday July 12, 2018 @12:13AM (#17512141)
Awesome find, thanks! Wonder if I can find this Mark Engelberg fellow...
Re:Show HN: Solving Rush Hour, the 6x6 Sliding Block Puzzle by hcs on Thursday July 12, 2018 @01:25AM (#17512358)
He also made an original game with ThinkFun: Code Master, which does some fun stuff with state machines:

https://www.thinkfun.com/products/code-master/