ice sudoku6.0.5 - App Store

【High performance, rich sudoku bank】
ice sudoku uses an efficient random number algorithm and uses multi-threaded concurrent technology to efficiently utilize Apple A series processors. It can quickly generate 5 types of Sudoku of different difficulty levels (beginner, easy, medium, difficult, and top).
It provides a comprehensive question bank covering SE 1.2~11.9 and supports search and random retrieval.

(1) Beginner, easy, medium, difficult, and top Sudoku special skill questions: 999 questions each
(2) Higher algorithm level Ice Sudoku Sudoku (SE 8.3-SE 9.2): 999 questions
(3) Peak algorithm level Icey Comet Sudoku (SE 8.8-SE 10.5): 999 questions
(4) Super first-class difficulty Sudoku (SE 10.5+): more than 100 questions

【Extreme logic, advanced challenge】
It has a complete logic analysis system that supports step-by-step solutions for any Sudoku, helping you sort out the logical reasoning of each step.
It has a rich library of targeted Sudoku training to help you become a Sudoku master.
Exclusive challenge mode, test level, speed challenge, unlock exclusive icons, so that Sudoku is no longer boring.

[Privacy protection, offline play]
The developer promises not to collect any data from ice sudoku, and you can enjoy all functions without network connection, no ads, no in-app purchases, and fully protect your privacy and security.

[High freedom, customizable]
Supports free circle change to painting, especially suitable for iPad with Pencil.
Supports Sudoku customization, where the numbers are determined by you, and there are templates to generate axial symmetric Sudoku.
The archive system is complete, and you can export 81 Sudoku strings to facilitate the management of your Sudoku library and free sharing.

[Rich functions, simple and intuitive]
The interface design is simple and clear, and continues to improve. iOS 13 and above devices support Sudoku scanning recognition.
Automatically fill in candidate numbers, error protection, highlight candidate numbers, candidate number background color adjustment, quick fill, and more convenient functions are waiting for you to explore.

[Continuous updates, support feedback]
Whether you are a master who can solve all kinds of Sudoku easily, or a Sudoku beginner, you can find the right questions for you here.
If you have better suggestions, please contact us so that we can hear your voice!

Official website of ice sudoku: https://github.com/tropicalwzc/ice_sudoku.github.io

Version History • Fixed candidates being filled automatically after autofill was turned off. Turning it off now immediately clears candidates while keeping entered digits and game progress.
You can still add candidates manually.
• When autofill is off, tapping the hint button now asks for confirmation. Choose “Enable and Continue” to fill candidates and view the hint.
• Improved landscape layouts on smaller iPads, with better spacing for the board and hint area.
• Updated the default color theme. 6.0.5 Sep 8 • Improved board rendering performance by avoiding unnecessary cell updates, making selection, digit entry, and candidate editing feel smoother.
• Fixed faint handwriting in the modern UI so PencilKit tool opacity is now respected.
• Improved the iPad landscape workspace and device detection for more consistent layouts across iPad sizes.
• Fixed iPad Bluetooth keyboard behavior after pressing E to show the next hint: arrow-key navigation and the selection frame now recover correctly. Readable Mode also enlarges keypad digits correctly on wide iPad layouts.
• Improved multilingual VoiceOver and accessibility announcements, and fixed several UI refresh issues. 6.0.3 Aug 26 1. Fixed crashes
2. Optimized error protection mode
3. Added easy-read mode
4. Supports Bluetooth keyboards 6.0.2 Aug 20 Themes now color the whole board — selection frame, candidates, coordinates, and keypad all follow your chosen theme and custom color sets.
Also fixed: medium-difficulty generation occasionally hanging, UI stutter from hint bubbles, and a restored completion check that confirms right or wrong answers. Manually removed candidates stay removed, and top-tier difficulty analysis is much faster. 6.0.1 Aug 13 - Rebuilt with Swift 6 and SwiftUI, with one adaptive experience across iPhone and iPad.
- Improved iPad landscape layout with clearer board, analysis, and control areas.
- Support custom number colors.
- Enhanced hints with candidate highlighting, inference routes, and detailed technique explanations.
- Improved the puzzle library with pack browsing, search, random selection, and completion tracking.
- Import puzzles from the clipboard, camera, or Photos, then review and correct the recognized grid before applying it.
- Added a more complete save experience with named saves, quick saves, restore, sharing, and deletion.
- Existing autosaves and named saves from earlier versions remain readable during migration.
- Improved responsiveness with cancellable background generation, analysis, and image-recognition tasks.
- Improved Dark Mode, Dynamic Type, VoiceOver, and English, Simplified Chinese, and Japanese localization.
- Removed the unused Bluetooth settings entry. 6.0.0 Aug 10 Fixed multiple crashes 5.1.1 May 12 Fix archive lost problem completely 5.1.0 12/01/2025 Check error menu item jump error fixed 5.0.2 10/08/2025 1. Fixed an issue with the menu pop-up animation failing on iPad
2. Modified feedback contact information 5.0.1 09/30/2025 Support iOS 26 glass style 5.0.0 09/19/2025 1.Support thinner text mode
2.Feed back email address changed due to team member change 4.8.0 07/21/2025 1.Optimize font weight and colors
2.Fix some text errors 4.7.5 07/07/2025 Disable iCloud Archiving 4.7.4 06/29/2025 1.Fix forcing-chain cannot swipe under iPad
2.Fix iPhone SE display challenge mode abnormally 4.7.3 06/22/2025 1. Support App language switching
2. Optimize the scan prompt 4.7.2 06/02/2025 1. iPad supports clear dividing lines for the Nine-square grid
2. Fixed text errors 4.7.1 05/04/2025 20 new iCloud archives added
Challenge mode records and historical question bank records will be automatically uploaded to iCloud to achieve data synchronization across multiple devices 4.7.0 04/06/2025 1. Added two new difficulty levels to the challenge mode: Ice Sudoku Challenge and Icy comet challenge
2. Fixed crashes and improved stability 4.6.1 03/23/2025 [Sudoku Challenge Mode is Coming]
Click the middle button on the main interface to enter the challenge mode
The challenge time is 30 minutes. Completing the Sudoku challenge can unlock the page icon of the corresponding difficulty, and you can also get different racing medals!
More surprises are waiting for everyone to challenge and discover! ! 4.6.0 03/17/2025 1. New difficulty level - Icy Comet!!
999 new questions will fill the gap in difficulty between Ice Sudoku and top-notch levels!
2. Support Forcing-X-Chain, the generation difficulty of top-level Sudoku and the accuracy of the analysis system are improved!
3. Optimize step-by-step solution, and the analysis ability of high-difficulty Sudoku continues to be enhanced!
4. Fix iPad crash 4.5.0 03/03/2025 1.The save system is updated, if you found some issues about the saves, please contact us
QQ group: 953085705
Email: 670090707@qq.com
2.Parts of the languages are updated. 4.3.5 02/17/2025 Fixing the countdown interruption issue! I also wish everyone a happy new year~ 4.3.3 02/04/2025 This time, the answer checking function after the Sudoku is completed is optimized, and the answer is not displayed without warning, and it is allowed to be modified!
The latest completed Sudoku will also be automatically saved and pinned to the top, and you can enter the storage space to view it! (But only the latest record will be kept) 4.3.2 01/16/2025 Fixed the issue where the timer was not reset after reading the built-in Sudoku and the issue where multi-language cold start did not automatically re-recognize 4.3.1 01/02/2025 The ice sudoku team has officially added a new staff member, with the id: Optimize! Update! Upgrade! That developer should get to work! We will actively urge our only developer to solve various feedback issues!

This time, in order to solve the problem of "eye strain", ice sudoku has officially taken the first step in color optimization!

The new version adds a "Strong divider lines option", which can be turned on in the settings bar to help everyone better distinguish the palaces, hoping to improve everyone's user experience.

ps: Feedback QQ group (953085705), welcome everyone to join, close to urge updates! 4.3.0 12/09/2024