OnerushTisir

A logic puzzle on an old navigation chart. Ink the water and leave the land: every number is an island of exactly that many cells, each island holds one number, all the sea joins up, and no 2×2 block of water appears anywhere. The soundings below are in fathoms, from the shallows to deep water. 2 fm · Survey sheets 64 puzzles on eight sheets, from 5×5 harbour approaches to 12×12 open water, eight to a sheet. Each has a single solution. A sheet unrolls once you complete four puzzles on the one before it. 3 fm · Stars and times Three stars for no hints and no slips, two for up to two, one otherwise. Your fastest time is kept for every puzzle. 5 fm · Daily chart One puzzle a day, the same for every navigator, sized 6×6 to 9×9 by the day of the week. Count your tides in a row and see the last fourteen days at a glance. 8 fm · Tools on deck Switch between Ink water and Mark land, then tap a cell or drag across several in one stroke. Undo, Hint, Check and Seal, which closes finished islands in one move. A pencilled line above the grid offers hints, and references A–L and 1–12 frame the sheet. 13 fm · The Almanac A quiz of 26 real facts about islands, straits and oceans, ten questions at a time, each followed by a note in the margin. 21 fm · The Logbook Fourteen entries to sign, tiles for puzzles inked, stars, time at sea, hints and streak, and a voyage log of your last 20 crossings. 34 fm · Settings Haptics, a Start with land dots option, the rules, a progress reset and the animated background: two compass roses turning slowly and long swells rolling across the paper. Switch the animation off for a still page. Anchored · Home port Plays offline, no account needed, in portrait or landscape.