6 min read · Updated April 2026
Numbly is the daily Sudoku puzzle on Wordlio. A new puzzle drops every day at midnight — the same puzzle for everyone worldwide. You have unlimited time, 3 hints, and 3 allowed mistakes before the game ends.
Sudoku has nothing to do with maths. You never add, subtract, or multiply anything. It's pure logic and pattern recognition. Here's everything you need to know.
The grid is 9×9, divided into nine 3×3 boxes. Some cells are pre-filled with numbers. Your job is to fill every empty cell with a number from 1 to 9, such that:
There is always exactly one solution. You're not guessing — you're deducing.
Start by scanning each number from 1–9 and asking: where can this number go in each row, column, and box?
Look for cells where only one number can legally go. If a row already has 1, 2, 3, 4, 5, 7, 8, 9 filled in, then the empty cell must be 6. These "naked singles" are the easiest placements and the best starting point.
If a number appears in two of three rows within a column section, it must go in the third row. Work through the intersections of boxes and lines to narrow down candidates.
For any empty cell, list every number that could go there based on the row, column, and box. If only one number remains after eliminating, fill it in. This is called a "naked single" and it's the most common solve technique.
If you genuinely can't find a logical next move, use a hint. Hints are there for this exact situation. After a hint fills in one cell, reassess — that new number often unlocks a chain of logical placements you couldn't see before.
Don't guess. Guessing leads to mistakes and in Numbly, mistakes are limited.
Speed comes from recognising patterns faster. The more Numbly puzzles you complete, the quicker your eye picks up naked singles and obvious eliminations. There's no real shortcut other than daily practice.
Keep a benchmark — your personal best time from the stats panel — and try to beat it each week.