Place a digit from 1-7 in each cell. Each digit must appear exactly once in each row, column, and box, except for the digits 1 and 3, which may appear any number of times.
Every 1 and 3 must be part of at least one adjacent pair of cells which reads as '13' either from left to right or from top to bottom.
Digits in a cage do not repeat (including 1 and 3) and sum to the total shown in the top left corner.
Lösungscode: Column 5
Heute, 22:57 Uhr von Fool on Hill
This is a great puzzle. It was hard to solve first time through, and messed with my scanning. But when I walked through it with the things I had learned from my original solve it was definitely tough but fair. You have to be alert, though, because the rules and cages have implications which are not immediately obvious. The deviant rules are appropriately devilish (given the title).