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A complete rewrite of Sudoku Expert. - Hints that name the technique and explain the logic (26 of them) - Five difficulty levels and a daily challenge with streaks - Step-by-step solver and a sandbox for your own puzzles - Free, offline, no ads, no tracking Progress from the old version cannot be carried over. Long-time players get a Veteran badge.
Classic Sudoku with a daily puzzle and hints that explain every move.
Sudoku Expert is a clean, offline Sudoku game for players who want to get better - not just fill in grids. Every puzzle is generated with a guaranteed unique solution and graded by the techniques it actually requires, from simple singles all the way to chains and almost-locked sets. When you are stuck, the hint does not just hand you a number: it names the technique, shows you the cells involved, and explains why the digit belongs there. WHAT YOU GET - Five difficulty levels - Easy, Normal, Hard, Expert and Master, each graded by the logic it demands, not by how many clues were removed. - A daily challenge - the same puzzle for everyone each day, with a streak to keep alive. Works completely offline. - Hints that teach - 26 solving techniques, each explained in plain language at the moment you need it. - A step-by-step solver - walk any board forward one deduction at a time and watch the reasoning unfold. - Sandbox - enter a puzzle from a newspaper or generate your own, check whether it has a unique solution, and play it or solve it. - Notes, undo, mistake highlighting, and a keypad that dims digits you have already placed nine times. - Challenge mode - invalid moves are blocked outright, for players who want no safety net. - Statistics and achievements, all stored on your device. - Light and dark themes, an accent colour picker, and a high-contrast mode. PRIVACY Everything you do stays on your device. There are no accounts and no sign-in. The app contains no advertising and no third-party analytics, and it does not request internet permission at all. That is a deliberate design decision, not a feature waiting to be added. ALSO ON THE WEB The same game runs in your browser at sudokuexpert.app - nothing to install. RETURNING PLAYERS If you have had Sudoku Expert installed since the original version, welcome back. This release is a complete rewrite, so your old statistics could not be carried over - but the app will recognise how many puzzles you solved back then and award you a Veteran badge for it.