Hashi: Island Bridges Puzzle

Hashi (also known as Hashiwokakero / Bridges) is a classic Nikoli logic puzzle: connect numbered islands with bridges — no crosses, one connected network. 3,000+ free puzzles. Daily challenge. Offline play. Teaching hints that explain the technique — not just the answer. HOW IT WORKS Each number is how many bridges must leave that island. Link islands with up to two bridges on the same connection. Bridges can’t cross. Your finished map must satisfy every number and connect all islands into one network. The rules fit in a few sentences; the deductions can fill a commute. WHY PLAY • Same satisfying logic as Sudoku, different geometry • Calm, focused gameplay without frantic timers • Scales from tiny starter grids to huge daily boards • Learn real Hashi techniques instead of trial-and-error • Great for brain training or a quick mental reset FEATURES • 3,000+ free levels across many board sizes • Daily challenge to keep you coming back • How-to-play guide and solving techniques • Teaching hints: forced move + clear reason • Mistake check, undo/redo, zoom & pan • Play core packs fully offline • Extra packs when you want more content • Optional subscription to remove ads and unlock perks (cancel anytime) GETTING STARTED Begin with small boards. Learn patterns like max degree and single neighbor, then take on the daily challenge. When you’re stuck, Hint shows a forced bridge and explains why.