Relational 6×6 Sudoku
Every border says which neighbour is bigger.
Also known as Greater Than Sudoku, Comparison Sudoku, Futoshiki-style Sudoku.
How to play Relational 6×6 Sudoku
- Fill every empty cell with a digit from 1 to 6.
- Each row, each column and each 3-wide, 2-tall box must contain all six digits exactly once.
- Every border between two neighbours is signed: the point of the > touches the smaller digit, and its open end faces the larger one.
Where to start
A cell whose signs all point away from it beats every neighbour — often a 6.
Difficulty
Puzzles are generated on your device, so there is an endless supply of them. Relational 6×6 Sudoku comes in one grade — or work up the endless track, where every level is generated a little harder than the last.