SUDOKU // LOGIC // PENCIL MARKS ENCOURAGED
Nine numbers. No maths homework.
Classic 9×9 Sudoku with verified unique solutions, proper pencil notes, touch-friendly controls and enough display options to stop every puzzle looking like an office spreadsheet.
PHONE CONTROLS // Tap an editable square to open the number tray. ● Pen commits a value; ✎ Pencil adds or removes candidate marks.
FUN FACT // Loading something suitably nerdy…
Choose your suffering
Difficulty is based on the deductions the puzzle requires, not just how many numbers we deleted.