Four Corners
- Fog of war
- Arrows
- Renban lines
The brief
Normal Sudoku rules do not apply.
Place the digits from 1-9 in the grid so that they do not repeat in any row or column. Digits can (and will) repeat in each 3x3 box. Each box will use exactly 3 of the digits from 1-9.
Arrows: Digits along an arrow sum the the number in that arrows circle.
Renban Lines: Purple lines in the grid are Renban lines. Digits on a line form a set of non-repeating, consecutive digits in any order.
Part of the grid is covered by fog. Placing correct digits will clear fog, no guesses are required.