THE LITTLE DETAILS

About Pocket Fit

Pocket Fit is an independent puzzle companion for the classic 2D Kanoodle board. It helps you recreate a physical layout, check a tricky position, or take a quick break with a generated challenge.

One specific set of pieces

We support Educational Insights' classic EI-2978: 5 rows, 11 columns, and 12 lettered pieces A–L with 55 beads altogether. We manually checked the shapes against “The Noodles” key on PDF page 3 and the rectangular board on PDF page 4 of the manufacturer-authored classic guide. Piece shapes on this site are newly drawn from those geometric facts; the official artwork and puzzle setups are not reproduced.

Quarter turns and turning a flat piece over give the allowed planar orientations. Symmetric results are deduplicated. Piece colors here are approximate; letters and shapes are the reliable match. Other editions may have different shapes. Compare your set with our tray before using a result.

What the solver actually checks

The solver treats every board position and every piece identity as an exact-cover constraint. It searches for an arrangement using each of the 12 pieces exactly once, with no overlap or cells outside the board. All current pieces are fixed during a search. A result is validated before being applied.

Search runs in a Web Worker so the page stays interactive. You can cancel immediately. Each search is bounded by 8 seconds or 600,000 search nodes; a browser-side watchdog also handles a worker that fails to respond. A limit or cancellation is inconclusive. Only an exhaustive search can report no solution. On a slow device a difficult board may reach a limit.

Original challenges, not booklet copies

We use seeded random search to produce a complete valid covering, then remove some pieces. The remaining clues are pinned. The retained full covering is a witness that the setup has a solution. Challenges can have multiple solutions, can repeat by chance, and are not assigned a scientifically measured difficulty. They are not copied from the official booklet, though accidental coincidence with an existing puzzle cannot be ruled out.

A small, transparent experiment

This project has no accounts, paid AI calls, photo recognition, pyramid mode, purchase flow, or leaderboard. It is maintained as a small independent tool experiment. We have not measured educational benefits, demand, or earning potential.

If a result looks wrong, use Share board to preserve the exact setup. Compare the letters and shapes with your physical set, check the selected edition, and try re-entering the pieces. The source repository includes tests and a detailed source-verification log. It is currently private.

Independent and unofficial

Kanoodle® is a trademark of Educational Insights. Pocket Fit is not affiliated with, endorsed by, or sponsored by Educational Insights. We do not use its logo, booklet artwork, or official challenge collection. Our brand illustrations, interface and solver implementation were created independently.

Read about local storage and sharing or return to the board.