Naive 2D Solver

Draft a board, load a preset, and brute-force the fit.

This page keeps the original simple backtracking flow, but frames it as a cleaner solver workspace for phones and desktops. Use presets, save scratch states, and render the solution once it resolves.

Preset Puzzle

Load my own 💾

Save the input to

Puzzle Definition

Solution

How To Use It

Pick a preset or paste your own board and piece definition, then run the solver. The exact input format is unchanged from the original page.

Preset shelf Load polyomino, tetromino, checker, or AquaBelle examples.

Scratch slots Save and restore up to three local variants while experimenting.

Render path Use `Show` after solving to visualize the result when available.

AKA put-together puzzles on a planar orthogonal lattice.

Next? 3D Solver

The same puzzle-editing idea, but extended into volumetric shapes.

Mail me your puzzle, I'll add it above.