Teleport
- Arrows
- Renban lines
- Nabner lines
- Little killers
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. Rotational 10-sums: Any pair of cells that are images of each other when rotating the grid by 180 degrees around the central cell must contain digits that sum to 10. On a marked diagonal digits sum to the little killer clue outside the grid. On the zipper line (purple with the circle in the middle) digits at an equal distance to the centre must sum to the digit in the central cell. The renban line (purple without a circle) must contain a set of consecutive non-repeating digits in any order. Digits on an arrow sum to the digit in the circle from which the arrow emerges. The yellow/golden Nabner line may not contain consecutive digits (anywhere on the line).