Almost Gurth
by FullDeck and Missing a Few Cards Open on SudokuPad
GAS
- Killer cages
- Kropki dots
- Kropki difference
The brief
Normal sudoku rules apply: every row, column and box must contain a complete set of the digits 1-9. Difference dots: cells joined by a white dot are consecutive: not all dots are given. Killer cages: cells in a cage marked by dashed lines must sum to the total in the top left corner of the cage.