About Lantern Dominoes
Restore a complete domino set on a lantern-lit worktable. Pair neighbouring numbered squares so each number combination appears once, with exactly one lantern inside every domino.
Explore 160 original puzzles across eight workshops. A tempting number pair may fail the lantern rule; a valid lantern pair may use numbers you need elsewhere.
How to play
- Goal
- Pair every square with a neighbour, using each numbered pair exactly once and giving each domino one lantern.
- How it ends
- A chart finishes when every square belongs to a valid domino; there is no loss.
- Record
- Your first solve time for each chart is kept; later solves are untimed practice.
- Join every square to one horizontal or vertical neighbour. Diagonal joins are not allowed.
- Use every unordered number pair exactly once, including doubles. For example, 1–3 and 3–1 are the same domino.
- Each domino must contain exactly one lantern: neither zero nor two.
- Choose a square, then its neighbour to join them. Selecting an existing pair again separates it. You can also drag between neighbouring squares.
- Undo and Redo revise one action. Restart clears the same puzzle while its original clock continues.
Controls
| Input | Action |
|---|---|
| Tap / click two neighbours; drag between them | Join or separate a domino |
| Arrow keys; Enter / Space | Move the cursor; select or join |
| Delete / Backspace | Erase the focused domino |
| D / E | Choose Join / Erase |
| Z / Y; R | Undo / Redo; open Restart |
| Escape | Cancel selection, close a ready dialog or return to workshops |
Tips
- Follow a lonely lantern A lantern with only one possible plain neighbour forces a pair.
- Reserve a number pair Look for a number combination with only one possible home.
- Check both rules A lantern-valid join can still repeat a number pair already used elsewhere.
Good to know
Progress and Undo history save in this browser. The first clock starts when a puzzle opens and continues through menus and Restart. Reloading an unfinished puzzle makes its time local only. Later solves are untimed practice. Music and effects have separate switches.
Watch how to play
Questions
Does number order matter?
No. Each unordered combination appears once; 2–3 and 3–2 use the same domino.
Can one domino contain two lanterns?
No. Every domino contains one lantern square and one plain square.
