4 Corners
by FullDeck and Missing a Few Cards Open on SudokuPad
Heartburn
- Killer cages
- Double arrows
The brief
- Normal sudoku rules apply. - Cages: Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage. - Double Arrows: Digits along a line sum to same total as the digits in the circles connected to the line.