Capacity
- Killer cages
- Diagonals
- Arrows
- Nabner lines
The brief
- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.
- Diagonal: On the negative diagonal digits do not repeat.
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- Nabner: The golden lines are Nabner lines, i.e. on a golden line there may not be consecutive or repeat digits.
- Arrows: Digits on an arrow sum to the digit in the circle from which the arrow emerges.
- Killer cages: Digits in a cage sum to the clue in the top left.