FIND WHERE EVERY NUMBER FITS
Numbers meet. Patterns connect.
Fit your number sequences into a connected grid.
A4 worksheet + separate answer key. PNG downloads the current preview.
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Find a place for every number.
01Add number sequences with shared digits.
02Choose difficulty and generate.
03Save, print or download.
How do I solve a number fill-in?
Place each sequence from the number bank into a horizontal or vertical slot. Crossing digits must match. Use each listed sequence once; no calculations are required.
What changes with difficulty?
Easy shows starting digits and groups sequences by length in a grid up to 15 × 15. Medium removes the hints and allows up to 20 × 20. Hard sorts the bank without length labels and allows up to 25 × 25.
Are leading zeros supported?
Yes. A sequence such as 0123 stays four digits long. Spaces separate sequences; do not put spaces within a number.
Why are some numbers not placed?
Sequences need matching digits and enough space to connect. Unplaced sequences are listed above the preview and excluded from the bank. Try another layout or edit your list.
Is the solution unique?
The answer key shows one valid arrangement. Other arrangements may also work for some number lists.
Can I save and export it?
Save current puzzle stores the exact grid on this browser and device. PDF and Print include a worksheet and answer key. PNG exports the current preview. You can also include saved number fill-ins in My Puzzle Book Maker.