Triangle Sudoku
Triangular board, with lines in three directions.
How to play Triangle Sudoku
- Fill every empty cell with a digit from 1 to 9.
- Lines run three ways across the triangle — straight across, and diagonally in each direction.
- Every line holds the digits 1 to 9 exactly once. The six tips of the star each count as part of the line they touch.
- Where two lines and two triangles overlap in all but one cell each, those two cells hold the same digit.
Where to start
Start where three lines meet: such a cell is squeezed from all three directions at once.
Difficulty
Puzzles are generated on your device, so there is an endless supply of them. Triangle Sudoku comes in 3 grades — or work up the endless track, where every level is generated a little harder than the last.