Crosswords that run three ways at once. Each cube holds twelve interlocking grids — four facing each way — built on the British newspaper rule generalised to three dimensions, so every face and every slice reads as an ordinary crossword.
The same cube, reclued throughout with political cryptics.
themed The PlanetsSix of the answers belong to the theme. Finding them is half of it.
Lattice SevenStraight clues. The bigger of the two, and a fair challenge.
First CubeStart here. Small enough to hold in your head while you learn the shape.
Open the workshopEmpty solver. Drop a puzzle in, or cut a grid and fill it in the browser.
One grid per layer, ready to print or save as PDF.
Lattice Seven — printThe same puzzle, laid out for a train journey.
First Cube — printThe 5-cube on two sides of paper.
The Planets — printThe themed cube, for a pencil.
A square is black when at least two of its three coordinates are odd. Slice that along any axis and it collapses back to the flat newspaper rule; the slices between hold the pillars that thread one grid into the next.
Drag to turn the cube, tap a square and type. Show switches
between the whole cube, one crossword, and all of them laid out flat.
Everything runs from one folder, no install:
py tools/fetch_words.py py -m crossword3d make --size 5 -o mine.json py -m crossword3d export mine.json -o mine.html
Or skip the terminal entirely — the workshop cuts grids, fills them and writes clues in the browser.
Install it and the puzzles work with no connection at all — on a plane, on the Tube, anywhere.
Your browser will offer this from its own menu (“Install app” or “Add to Home Screen”).
Open any puzzle and press Share link. The whole thing — grid, answers, clues — is packed into the address itself, about 2 kB. Nothing is uploaded anywhere.