ZipBan!
by FullDeck and Missing a Few Cards Open on SudokuPad
Indigestion
- Zipper lines
- Renban lines
The brief
- Normal sudoku rules apply. - All lines are both Renban AND Zipper lines. Centres of Zipper lines are marked by small circles. - Along Renban lines, digits for a non-repeating set of consecutive digits in some order. - Along Zipper lines, pairs of digits equidistant from the center have the same sum. For odd length Zipper lines, that sum is the value in the center cell of the line.