Twisty Sums
by FullDeck and Missing a Few Cards Open on SudokuPad
Strong Indigestion
- Region sum lines
- Quadruples
The brief
**Sudoku, Region Sum Lines, Quadruples** - Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. - Region Sum Lines: Box borders split blue region sum lines into sections and the digits on those section must sum to the same value. - Quadruples: Digits in a Quadruple circle must be placed at least once in the four cells touching that circle. For more of our puzzles, please visit https://missingdeck.net or join our mailing list to get a weekly digest of puzzles: missingdeck.net/mailing