Sudoku - 5 Types of Puzzles

Sudoku is a puzzle-solving app that works completely without an internet connection. Puzzles are generated directly on your device, and each one has a unique solution. PUZZLE TYPES Classic 9×9 — Standard rules: digits 1–9 in every row, column, and 3×3 block. Sudoku 6×6 — A simplified version for beginners, featuring 2×3 blocks and digits 1–6. Diagonal (X-Sudoku) — Classic rules with an additional condition: neither of the two main diagonals may contain duplicate digits. Killer Sudoku — Cells are grouped into cages with a specified sum; duplicate digits are not allowed within a single cage. Irregular (Jigsaw) — Instead of standard 3×3 blocks, irregularly shaped regions are used. DIFFICULTY LEVELS Each puzzle type is available in four difficulty levels: Easy, Medium, Hard, and Expert. FEATURES — Notes Mode: Place pencil marks in cells — Hints: Reveal a single cell when needed — Undo Move: Correct mistakes at any step — Timer with pause functionality — Auto-save: Progress is saved every 30 seconds — Statistics: Number of puzzles solved, best time, current winning streak — Resume Game: Continue an unfinished game after closing the app