Hashi vs Takuzu

Hashi: Apex — the climb starts where other apps stop. Most Hashi apps teach beginners. Apex assumes you already know islands and bridges. If you want tutorials and tiny grids, turn back. Built for solvers who outgrew the easy packs • Large 12×18 boards — dense islands, long sight lines, real planning • A curated hard set — no padded warm-ups • First-attempt Ops budget — sloppy thrashing has a cost • Bookmarks to mark critical bridges mid-sovle • Check exists — but using it keeps that sovle local-only Stats, replay, competition • Per-puzzle times, pace curves, and where you stand • Open a fastest sovle and watch every move • Global rankings across the Apex climb • Vote on sovles you respect (or don’t) Fair play, not hand-holding No endless easy tiers. No hint-spam fantasy. Just bridges, pressure, and a clean Apex sovle. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.puzzles-together.com/privacy.html

Binary logic, graded by the technique each board actually needs. Fill a grid with two symbols under three rules: never three of the same symbol in a row, an equal count of each per line, and no two identical rows or columns. Tap a cell to cycle it. That is the whole game. DIFFICULTY THAT MEANS SOMETHING Boards are labelled by the DEEPEST solving technique they genuinely require — Dawn, Day, Dusk and Night — computed by the same deterministic solver that proves each board has exactly one solution. Dawn, Day and Dusk are solvable by pure forward deduction: no hypotheticals, no guessing. Night asks for exactly one bounded "what-if" chain that resolves in a few steps, never open-ended trial and error. We say that precisely rather than promising a "never guess" that a hard board would contradict. WHY YOU'LL STAY • One puzzle a day, byte-identical worldwide, with no server • Streaks, and a fully reconstructible free archive • Several sizes, from a quick grid to a long sit-down • Hints reveal the next forced cell, never the answer MADE TO BE COMFORTABLE • The two symbols always differ in SHAPE, not just colour, at every cell size • A colorblind-safe palette and a fully accessible input path • Play in English, German, Arabic, Persian or Kurdish (Sorani) • Proper right-to-left layout and localized numerals • Fully offline. No account, no sign-up FREE, HONESTLY The daily, the archive, streaks and stats are free with light optional ads. Rewarded video is opt-in and only ever buys a hint. No banner ads on the board, ever. One purchase removes all ads and lifts the hint cap — no subscription.