Lock, Sum, and Eight Smoking Digits
by FullDeck and Missing a Few Cards Open on SudokuPad
Indigestion
- Region sum lines
- Lockout lines
The brief
- Normal sudoku rules apply. - All lines are BOTH lockout lines AND region sum lines. On each line, the region sum line includes the diamonds at the ends of the lockout lines. - On Lockout Lines digits in diamonds must differ by at least 4. Digits on the line must fall outside the range defined by their attached diamonds and may repeat if allowed by other rules. - The sum of digits on a Region Sum Line within a particular region must be the same for all of the regions the line passes through.