Inequality Grid
A sign points at the smaller number. No repeats in rows or columns.
Controls and saving
Tap a cell to select it. Use arrow keys to move, number keys to enter, M for notes and Delete to erase. Notes let you record your own candidates.
Progress is saved on this device when storage is available.
How to play
Tap an empty cell, then press a digit below. A digit cannot repeat in a row or column, and an N×N grid uses 1 to N. A sign between two cells points its tip at the smaller one, so with “<” the left cell is smaller. Notes let you record candidates. Hints reveal a strategy, a cell, then the answer.
Learn more
These puzzles are generated for this site. Tests check that each has a single solution that logic alone can reach, using row and column elimination and the signs. Hints explain their reasoning, such as “smaller than a cell that is at most 3”.