Lighthouses

Find the hidden ships

A calm logic puzzle for iPhone. Every lighthouse counts the ships in its row and column. Work out where they all are, by deduction alone.

Coming soon to the App Store
The Lighthouses home screen: a hand-drawn lighthouse above Dailies, Voyage, Learn the ropes and Captain's Log.
5 a daynew dailies, from a 6×6 Morning Mist to an 11×11 Midnight Watch, plus a Sunday Challenge
100puzzles in five Voyage packs, from 5×5 to 12×12
Zeroads, accounts or trackers. It plays offline.

Three rules, one answer

  • A lighthouse counts every ship in its row and column. It sees past other ships and lighthouses.
  • Every ship is seen by at least one lighthouse.
  • Ships never touch each other or a lighthouse, not even corner to corner.

Every puzzle has exactly one solution, so you never have to guess. Tap a cell once for a ship, twice for water.

How to Play: a lighthouse marked 2 sees two ships along its row and column. A 7×7 puzzle part-solved, with ships and water marked around the numbered lighthouses.

A fresh set every day

Five dailies open one after another as you solve them, each a size up from the last. Keep a streak going: every seven days earns a streak freeze that saves a missed day. Share your time when you're done.

An optional reminder keeps the streak afloat, at a time you choose.

The Daily Challenge list: Morning Mist, Coastal Breeze, Open Seas, Stormy Voyage, Midnight Watch and the Sunday Challenge.

A voyage in five packs

From Calm Waters to Stormy Seas, 20 puzzles a pack. Each pack opens when you finish the one before it.

Stuck? A hint highlights the next cells you can work out and says why in plain words. Check shows whether any mark is wrong, and turns green when the grid is clean.

Calm Waters, 12 of 20 solved: a grid of life rings with puzzle 13 next.

Captain's Log

Follow your streak, your best streak and your perfect clears, and climb the ranks from Deckhand to Harbour Master.

The art is hand-drawn, with a day look and a night look; it can follow your iPhone's setting.

Captain's Log: a 9-day streak, the Lookout rank with a bar to Navigator, and 20 completed puzzles. The home screen at night: the lighthouse lamp lit against a dark blue sky.

No data collected. No account, no ads, no analytics, no internet connection. Your progress stays on your iPhone.

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