OK, I also got a “non-cheat” solution: unfortunately, it is non-constructive and uses the Nkvbz bs Pubvpr, so it still feels like a bit of a cheat. Is there a solution which doesn’t rely on that (or is it possible to show there is no solution in such a case?)
OK, I also got a “non-cheat” solution: unfortunately, it is non-constructive and uses the Nkvbz bs Pubvpr, so it still feels like a bit of a cheat. Is there a solution which doesn’t rely on that (or is it possible to show there is no solution in such a case?)