Nonogram vs Takuzu

Nonogram is a clean, minimal logic puzzle game. Fill in the grid using number clues to reveal a hidden picture — no guessing required. HOW TO PLAY Each row and column has a sequence of numbers telling you how many consecutive cells to fill. Use logic to deduce which cells are filled and which are empty. Solve the puzzle to reveal the picture. FEATURES • Hundreds of puzzles across four difficulty levels: Easy (5×5), Medium (10×10), Hard (15×15), and Expert (20×20) • Daily Challenge — a new puzzle every day with streak tracking • Hint system — 3 free hints per day, or watch an ad for more • Undo/redo support • Light and dark mode • No energy system, no lives — play as much as you want PREMIUM Upgrade to remove ads, get unlimited hints, sync progress across devices, and unlock all puzzles. All puzzles are procedurally generated — there are always new puzzles to solve. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.