Quadtropia
by FullDeck and Missing a Few Cards Open on SudokuPad
GAS
- Entropic lines
- Quadruples
The brief
**Sudoku, Quads, Entropic Lines** - Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box. - Quadruples: Digits in a Quadruple circle must be placed at least once in the four cells touching that circle. - Entropic lines: Any set of three adjacent cells along an entropic line must contain a low digit (123), a middle digit (456), and a high digit (789). Subscribe to our mailing list to receive a weekly email with all of our puzzles from the previous week: https://missingdeck.net/mailing.html