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Mar 14 at 13:59 comment added Dmitry Kamenetsky And now it exists: puzzling.stackexchange.com/questions/125934/…
Mar 10 at 4:38 vote accept Brandan
Mar 10 at 4:38 comment added Brandan I suspect that would be impossible to meaningfully constrain. The +/- might be the sweet spot.
Mar 9 at 3:31 comment added Dmitry Kamenetsky What happens when you replace A and B with just a single character X? So you need to join X to X. Does that still have a unique solution? An interesting puzzle in itself is to find one arrangement of X that DOES have a unique solution.
Mar 8 at 6:08 comment added Brandan This is really good. Like a combination of some magnet/domino puzzles I've played and other "strip" grid deduction.
Mar 8 at 1:13 history answered Bubbler CC BY-SA 4.0