Cagelogic

Five kinds of sudoku in one quiet app: Killer, Classic, Diagonal, Jigsaw and Sandwich. Buy it once and it is yours — no ads, no subscription, no account, nothing left to unlock. FIVE RULES • Classic — every row, column and box holds 1 to 9. • Killer — dashed cages show their sum, and a digit never repeats inside a cage. • Diagonal — both long diagonals hold 1 to 9 as well. • Jigsaw — the nine regions are irregular shapes. • Sandwich — the number outside a line is the sum of the digits between its 1 and its 9. DIFFICULTY THAT MEANS SOMETHING Beginner to Expert is decided by the techniques a puzzle actually needs, not by how many digits are missing. A hard puzzle is hard because it asks for an X-wing — not because it looks empty. EVERY PUZZLE HAS EXACTLY ONE ANSWER All 15,000 puzzles were proved unique and solvable by pure logic before they shipped. You never have to guess, and you never wait for one to be made. HINTS THAT TEACH A hint comes in three steps: it names the technique, then shows you where to look, and only then writes the digit. You can learn a move instead of being handed an answer. FIVE NEW PUZZLES EVERY DAY One of each rule, the same five for everyone, every day. Keep a streak going. MADE TO BE READ Three themes — paper, night, and a high-contrast one — three text sizes, and board digits that grow with them. Left-handed layout. Corner notes, centre notes and six colours. Undo, redo, pause, and a check that never lies. QUIET BY DESIGN No ads. No timer pushing you. No hearts, no energy, no coins. Works with no internet at all. Rankings live on Game Center, and a time counts only when you solved the puzzle without help.