Tsuidoku vs Unciphered

Tsuidoku is a logic puzzle for players who have mastered classic Sudoku. The 9×9 grid remains, but a fourth constraint changes everything. THE 4 RULES Each row, column, and 3×3 region must contain the numbers 1 through 9 AND the 9 colors. The twist: each color must also contain all 9 numbers. The result: 81 unique number-color pairs. Place a "Red 5," and it cannot appear anywhere else. DAILY CHALLENGE A unique global grid every day—the same one for the whole world. Maintain your streak, earn monthly medals, and check the daily rankings. MASTER THE TECHNIQUES - Rainbow Technique: Track a single number across all nine colors. - Color Wheel: Track a single color across all nine numbers. Tap a cell to cycle through highlight modes and see the logic light up. PLAY TOGETHER Add friends, compare stats, and chat directly within the app. A detailed profile tracks your records across every difficulty level. Think you’ve mastered Sudoku? The real game starts here. Download now and create your first 81 perfect pairs.

A proverb is hiding on every board. Each letter became a number — the same number always hides the same letter — and the way in is through the clues: solve a small crossword-style clue, and every letter you prove fills in across the whole puzzle. Piece by piece, the hidden phrase comes back into the light. Unciphered is free to play from start to finish. Optional extras: coin packs, and The Wisdom Collection — four harder chapters, 80 more phrases — a one-time purchase, kept forever. ONE PUZZLE EVERY DAY A fresh cryptogram each day keeps your streak alive, and a two-week calendar lets you go back for days you missed. Filling in the past pays coins and completes the calendar — but the streak only counts the days you truly showed up. QUESTS THAT EARN SECRET LEVELS Finish the day's small quests — the daily plus a level you've never solved — and you earn one of the hidden levels, yours to keep forever. A JOURNAL OF DECODED WISDOM Every phrase you solve is saved with a short, true fact about where it came from. The journal becomes your own collection of proverbs, one solve at a time. MADE TO BE COMFORTABLE • Works completely offline — planes, trains, anywhere • No account, no sign-up, nothing to configure • Full VoiceOver support, large text sizes, Reduce Motion • Light and dark, on iPhone and iPad • Hints when you want them: reveal a letter or a whole word Unciphered is free to play from start to finish. Optional extras: coin packs, 4 harder bonus chapters, 80 new phrases, a one-time purchase kept forever).