Slitherlink vs Just Hashi

Slitherlink, the classic logic puzzle — drawn like pen on paper. The rules are simple. Each number counts the lines surrounding its cell. Satisfy every number while drawing one single closed loop — no branches, no crossings — and the puzzle is complete. It looks easy, and then the logic gets delicious. Every puzzle has exactly one solution. Guessing is never required: every generated puzzle is mathematically verified to have a unique answer. Difficulty names mean something here, too — we measure the depth of reasoning each puzzle actually needs, and only serve ones that earn their label. ■ Features • New to Slitherlink? A hands-on tutorial teaches the rules on a tiny practice board • Four difficulties — from Easy 5×5 to Expert 12×12 • Daily Puzzle — the same board for everyone each day, with an attendance calendar and streaks • Paper-quiet design — an ink-and-paper ledger look, in light and dark • Comfortable controls — tap to draw, long-press to mark ×, drag along the dots • Room for big boards — pinch to zoom, two-finger pan, iPad and Apple Pencil support • Mistake-proof — unlimited undo/redo and automatic saving • Track your progress — best and average times per difficulty For the moments you want quiet focus, one board of Slitherlink is enough.

Just Hashi teaches you to play Hashi properly, then gets out of the way. Hashi is a puzzle of islands and bridges. Each island shows a number, and that is exactly how many bridges must touch it. Bridges run straight up, down, left or right, never cross, and at most two join any pair of islands. When you are done, every island has to belong to one connected network. That is the whole rulebook. Getting good at it is another matter, and that is what this app is for. Nine lessons take you from the rules to the techniques experienced solvers stop noticing they use: full islands, counting what the other corridors can carry, spotting the bridge that would strand half the board, chasing a what-if until it breaks. Each one is a short board where the technique is the only way through, rather than a page of text to read. When you get stuck in a real game, the hint button names the technique that applies and shows you the corridor it points at. It will draw the bridge for you if you insist, but that is the last thing it offers rather than the first. Practice drills let you rehearse one technique at a time. Mastery counts only the deductions you worked out yourself, so the progress path reflects what you can actually do. Every puzzle has exactly one solution, and every puzzle can be finished by reasoning alone. The app proves both before a board ever reaches you. You are never asked to guess, and a bridge that would cross another simply cannot be drawn. FREE The rules lesson, Full Islands and Only Neighbor. Small and medium boards at every difficulty. The daily puzzle and its streak, including the larger weekend boards. An error check that tells you when something has gone wrong. ONE PURCHASE UNLOCKS Six more lessons. Every practice drill. The hints that teach instead of just answering. Large boards. Your stats and technique path. No ads, no subscription, and none of the timers, energy or coins that puzzle apps tend to arrive with. Everything works offline.