# Sudoku - 5 Types of Puzzles — Sudoku — 5 Puzzle 4 Difficulty

> Sudoku — 5 Puzzle 4 Difficulty (iPhone/iPad app by Alexander Timoshkov.)

- Source: https://appshunter.io/ios/app/sudoku-5-types-of-puzzles/id6772319106 (this page in markdown: same URL + `.md`)
- Developer: [Alexander Timoshkov](https://appshunter.io/developer/1059090945)
- Category: Games, Puzzle
- Price: Free
- Age rating: 17+
- Requires: iOS 16.6 · 23 MB
- Languages: American English, Russian
- Released: 2026-05-26
- Data updated: 2026-07-29
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-5-types-of-puzzles/id6772319106/reviews.md

## What is Sudoku?

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


## Version history (last 1 release)

### 1.0 — 2026-05-26

No release notes.

## More apps by Alexander Timoshkov

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- [Backgammon with Ai](https://appshunter.io/ios/app/backgammon-with-ai/id6757660546)

All apps by Alexander Timoshkov: https://appshunter.io/developer/1059090945

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-29.*