Explanation part: hit spacebar / click screen to progress through text. Playing part: just watch / play (by clicking grid squares).
MENACE was invented in the early 1960s by Donald Michie, a British AI researcher. Hadn't heard of it until an interesting forum question by @RandomHumanScratcher https://scratch.mit.edu/discuss/topic/612260/ @RT_Borg has what looks like a great project to generate distinct box positions, and has explained the symmetries in the forum discussion. There is what looks like a great MENACE project by @TheGamer- (I didn't actually use either of the above. Probably should have. The coding here is really horrible.) I did use @theChAOTiC's excellent text engine - thank you.
