Royal_chel - 2017-10-12 1:08 AM
13: Can clue with 1|2 be changed to 2|1 ( 1->2 and 2->1) or to 2|3 (2->3 and 1->2) in both these cases 2 not lying about the value?
Yes. As long as you can represent a changed version where each digit goes one higher or one lower, it doesn't matter if they end up becoming digits that are already there.