Lattice is a free daily untangle puzzle. You get a web of dots joined by lines, and many of the lines cross. Drag the dots around until no line crosses any other, and you're done.
How do you play Lattice?
- Look at the board. Any line that another line crosses is orange. A line with nothing crossing it is black.
- Press a dot and drag it anywhere on the board. Every line attached to it stretches to follow.
- Let go. That counts as one move, and the bar at the top fills as more lines come clear.
- Keep going until every line is black. The dots give a little bump in turn, and your results appear.
There is no way to lose. The puzzle ends when nothing crosses, however long that takes.
Why can every tangle be solved?
Each day's puzzle is built backwards. The game starts from a few long straight lines laid across a blank board. Every place two of those lines meet becomes a dot, and each line is cut into short pieces between its dots. That drawing has no crossings, because it's just straight lines meeting at points.
Then the dots are shuffled around a rough circle, which ties everything in knots. The game keeps the scramble that leaves the most lines tangled, and it always starts you with at least three crossings. The clean layout still exists. Your job is to find it, or any other layout where nothing crosses.
This also tells you what the answer tends to look like. In the hidden layout the dots sit in straight rows, and each dot is where two rows meet. A dot with two lines belongs on the outside of the picture. A dot with four lines belongs further in.
How does Lattice change through the week?
The web gets bigger, because the game builds it from more straight lines:
- Monday to Wednesday: 10 dots and 15 lines
- Thursday to Saturday: 15 dots and 24 lines
- Sunday: 21 dots and 35 lines
The size never changes within those days, only the layout.
Time or moves: which matters?
Both are counted. Your time runs while the puzzle is on screen. It pauses when you open the how-to, leave the tab or look at your results. A move is one completed drag. A tap that doesn't move a dot doesn't count.
The leaderboard ranks by time, and moves break ties. Your results screen tracks both, with your best time and your fewest moves kept side by side. So there are two ways to have a good day: fast, or neat. Trying for both at once is how you end up slow and messy.
Hint and Undo
Hint finds the dot caught in the most crossings and pulses it. If there's a better spot for it, a dashed ring shows where to drop it. Hint then rests for five seconds before you can use it again. It points you at one move, not the whole answer.
Undo puts the last dot you moved back where it was. It doesn't take a move off your count, though. The drag still happened.
Tips for untangling faster
- Start with the dot in the most orange lines. Moving it usually clears several crossings at once. Hint picks that same dot, if you want a nudge.
- Pull a dot out to the edge first. A dot with only two lines is easy to park on the outside, and it gets out of everyone else's way.
- Look for straight rows. The answer is made of straight lines meeting at dots. If three dots already sit in a row, build out from them.
- Fix one area, then leave it alone. Moving a settled dot to fix a far corner often undoes your earlier work.
- Don't chase a perfect picture. The puzzle only asks that nothing crosses. Lines can be long, short or lopsided.
How is Lattice scored?
Your score is your solve time, with your move count as the tiebreak. Signed-in players get a daily leaderboard and a friends-only board. Finishing extends your streak if you also finished yesterday.
You can play the puzzle again after you finish, but only your first finish of the day counts. You can hide the timer in your preferences if you'd rather not watch it.
How do you share your result?
The Share button copies your time and your moves:
Lattice #10 / 0:58 / 7 moves perdiem.games/lattice
On a phone, Share opens your share sheet.
Is Lattice like Planarity?
Yes, it's the same kind of puzzle. Planarity and other untangle games also ask you to drag dots until no lines cross. Lattice adds a new web every day, the same for everyone, sized by weekday, with time and moves to compete on. Lattice isn't affiliated with Planarity or its makers.
Common questions
Is the puzzle the same for everyone?
Yes. Everyone gets the same web and the same starting tangle each day.
Can I play past puzzles?
Yes. Past days open from the week strip on your results screen.
Does it work on a phone?
Yes. Drag with your finger, or with a mouse on a computer. The board resizes to fit your screen.
Do I need an account?
No. Lattice is free and runs in your browser. An account keeps your streak across devices and gets you leaderboards and friends.