Flight Path

Every puzzle is a square of radar with numbered beacons on it. Put your finger or mouse on beacon 1 and drag. The path moves one square at a time, up, down, left or right, never diagonally.

• Pass the beacons in order: 1, then 2, then 3 and so on.
• Fill every square exactly once.
• Finish on the highest number.
• On harder days some squares have walls between them. The path can't cross a wall.

Made a wrong turn? Drag back along your path to rub it out, tap any square on the path to cut it back to there, or press Undo. Reset clears the lot. On a keyboard, the arrow keys fly the path and Backspace takes a step back.

The clock starts with your first move. When the last square is filled the plane flies your route and you get a result to share that gives nothing away.

Everyone gets the same puzzle on the same UTC date. Monday and Tuesday are 5 by 5, Wednesday and Thursday 6 by 6, and Friday to Sunday 7 by 7. From Thursday walls join in (now and then a Wednesday needs one too), and Sunday has the fewest beacons, so it's the toughest.

I make each one by drawing a random route through every square, putting beacons along it, then letting my solver try every possible route. If it finds a second answer I add a beacon or a wall where the two routes part and check again, so every puzzle has exactly one solution.

Solving today's puzzle earns 100 points, and practice puzzles earn 20, up to three a day. Your streak, best times and the last 60 days stay in this browser.

How do I play Flight Path?

Start on beacon 1 and drag one continuous path through the grid, moving up, down, left or right. Pass the beacons in number order, fill every square exactly once and finish on the last beacon.

When does a new puzzle come out?

A new puzzle goes up every day at midnight UTC. Everyone gets the same one, and it gets harder through the week: Monday is a small 5 by 5 grid and the weekend brings 7 by 7 grids with walls.

Does every puzzle have one answer?

Yes. Before a puzzle goes out, my solver checks every possible route and I only keep puzzles with exactly one solution, so you can always reason your way to it.

Can I play more than one a day?

Yes. Practice mode gives you a fresh random puzzle whenever you like, in small, medium or large.

Is it free?

Yes. There's no account and nothing to buy. Your streak, best times and history stay in this browser.

I'm Arthur. I love a small daily puzzle with my morning coffee, and radar scopes are a bit of an obsession of mine, so this one puts the two together. If a puzzle ever feels wrong, email me and I'll look at it.