Thinking Cap: Sudoku & Logic

Thinking Cap is a calm puzzle companion: a Sudoku that teaches you as you go, and a fresh daily set of short logic puzzles. SUDOKU, GRADED THE HUMAN WAY Every Sudoku is made on your phone and checked to have exactly one answer. Its level is set by the hardest step a person needs to solve it, so a Tricky puzzle really is tricky and a Gentle one really is gentle. • Six levels: Gentle, Moderate, Tricky, Tough, Fiendish and Diabolical • Steps from "only place" and "only number" to pairs, X-Wings, Y-Wings, Swordfish, kites, skyscrapers and chains • Killer, Jigsaw and Thermo variants • Pencil notes, fill in all notes, undo, and gentle mistake checking you can switch off A TUTOR THAT TEACHES Stuck? Tap Hint. The tutor first nudges you towards the right part of the grid. Ask again and it highlights the pattern and explains, in plain words, why the step works. It spots a wrong number or a missing note before you go astray. The techniques guide shows every step with a worked example. THE DAILY SET Each morning brings five puzzles, the same for everyone: • Beacons: light one beacon in every row, column and coloured region, with no two touching • Balance: share dark and light stones evenly, never three alike in a row • Thread: draw one line through every square, passing the beads in order • Sketch: shade squares to reveal a little picture • Today's Sudoku: gentle on Monday, stiffer by Saturday, and a variant on Sunday Every puzzle can be solved by reasoning alone. When you finish, share a tidy result card with family and friends. It shows how you did, never the answers. YOUR OWN PHOTO PUZZLES Turn a photo of your dog, your garden or your grandchildren into a Sketch puzzle. Frame it, pick a size and see the picture before you make it. Only the little black and white picture is kept; your photo stays where it was. MADE FOR COMFORT • Large, clear numbers in Atkinson Hyperlegible, a typeface designed for low vision readers • Paper, Lamplight (dark) and High contrast themes • A "Bigger everything" switch on top of your phone's text size • No timers unless you turn one on, and no streaks to lose • Works offline. No account and no sign in. Your progress stays on your phone. FREE AND PRO Free, always: the daily set, today's Sudoku, unlimited Gentle, Moderate and Tricky Sudoku, yesterday's set to catch up on, and every hint from the tutor. Thinking Cap Pro adds Tough, Fiendish and Diabolical Sudoku, all three variants at every level, the full archive of past daily sets, unlimited practice of each daily puzzle, photo puzzles, your stats and extra colour themes. Choose the Puzzle Pass, a yearly subscription with a free trial for new subscribers, or Lifetime, a single payment. Both unlock exactly the same Pro. Both prices are shown in full before you buy, and you can cancel the Puzzle Pass any time in Google Play. Made in the UK by Zarkon. Questions or ideas? [email protected]

Welcome to Thinking Cap. • Sudoku in six levels, from Gentle to Diabolical, graded by the steps you need • A tutor that shows you the next step and explains why it works • Killer, Jigsaw and Thermo variants • Five daily puzzles, the same for everyone: Beacons, Balance, Thread, Sketch and Sudoku • Clear How to play guides with pictures for every puzzle • Turn your own photos into picture puzzles (Pro) • Large, clear numbers, dark mode and no timers unless you want one