2021-06-08 In no particular order, thanks Deusovi, Jack Lance, Tobias Cunningham (TJC Games), tann, Portponky, Zachary Barbanell (TheZachMan), Jack Kutilek, tjm, Shark, Corey Hardt, Skymoo and Martin Ender (Menderbug) for ideas and feedback! 2021-09-17 Thanks to Erich Friedman for finding a mistake in puzzle detachment, now corrected.