How to play
Fill an n×n grid with the digits 1 to n so that no digit repeats in any row or column. Between some neighbouring cells there is a sign like < or ∧: its point always faces the smaller digit. Some digits are given to start you off.
Every futoshiki on PuzzleSheets has exactly one solution, checked by a solver, and you can always reach it by logic.
Sizes and difficulty
Pick a size from 4×4 to 9×9. Difficulty then sets the clues:
- Easy: plenty of given digits. The signs and single cells do the rest.
- Medium and Hard: fewer digits, more signs. You will need pairs (two cells sharing the same two candidates): on hard from 5×5 up, on medium from 6×6 up.
- Expert: almost all signs and few digits. From 7×7 up you will need triples.
Tips
- Follow the chains. In a 5×5, a cell at the start of a chain a < b < c can be at most 3, and the cell at the end at least 3.
- Look at the edges of the range. A cell that is bigger than its neighbour can never be 1; a cell that is smaller can never be the largest digit.
- Count in each row and column. If a digit fits in only one cell of a row, it goes there.
- Use notes. Pencil in the candidates and cross them off.
Using the player
- Tap a cell, then a number. Use Notes for pencil marks.
- Highlight conflicts shows repeated digits and broken signs.
- Your progress is saved on this device. Save code / Continue later lets you carry on elsewhere.
Printing
Print 1, 2 or 4 puzzles per page on A4 or US Letter, with an optional answer key.