# Cho U’s 4 by 4 Go Puzzle > A Go puzzle game with adjustable difficulty and animated stones. (iPhone/iPad app by The Nihon Ki-in.) - Source: https://appshunter.io/ios/app/cho-us-4-by-4-go-puzzle/id517153034 (this page in markdown: same URL + `.md`) - Developer: [The Nihon Ki-in](https://appshunter.io/developer/424145707) - Category: Games, Education, Puzzle - Price: $2.99 - Rating: 4.60/5 from 5 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 68 MB - Languages: English, Japanese, Korean, Chinese, Chinese - Released: 2012-04-18 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/cho-us-4-by-4-go-puzzle/id517153034/reviews.md ## What is Cho U’s 4 by 4 Go Puzzle? Cho U’s 4 by 4 Go Game is the application that can be enjoyed by all ages. The problems created by Cho U (Professional Go player) are categorized into four level of difficulty for from beginners to advanced players. ■Set up for design The design of the stone is a cute black Cat or a white Dog. When you get Atari (*a stone or chain of stones has only one liberty, and may be captured on the next move if not given one or more additional liberties.), the stone will change the original face to a scary face. If you surround stone(s) of your opponent, it will be changed to the happy smile face. It should be fun to watch them. You can set up to return to the original face of the stone. The new designs for the stone will be given to you when you purchase additional problems. ■Mode for Story In this mode, you will play a game on a story of a black cat. You can master a rule of go game and some techniques naturally with meeting and chatting with rich characters of dogs in the story. ■Mode for Study In this mode, you can try the same problem again until you fully understand it. ■Mode for Challenge You will answer 10 problems and get scored based on your spent time and the degree of difficulty of the problems. You can check all of your performances on a graph. The score rank can be seen in Game Center in iPad/iPhone and you can compete with other players in the world. ■Mode for Non-Stop You can play a game continuously if the life points are not used and you answer within a time limit. You will get some special effects for the designs of your stone. The score rank can be seen in Game Center in iPad/iPhone and you can compete with other players in the world. ## Key features - Adjustable difficulty levels - Story mode with characters - Study mode for practice - Challenge mode with scoring - Non-stop play mode - Animated stone designs ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/cho-us-4-by-4-go-puzzle/id517153034/reviews.md ### 3/5 — 剧情模式闪退 *2023-08-11* 剧情在刚开始时，阿爽出现后就闪退了。挑战模式可以使用。 ### 5/5 — Great puzzles! *2019-10-23, version 1.3* This game is a nice stand alone game as well as a companion for Go/Baduk/Weiqi! It may even break some bad habits that non-pro Go players tend to develop when doing Go puzzles! The 4x4 structure (and not just a “corner of the board” structure) of the puzzles forces me to actually read, count, and evaluate the situation to understand whether I should really kill, make life, settle for seki, or even pass! That last option is important with this board size! As a low level player, this app is great for my discipline because the small size of the grid really means I have no excuses—I SHOULD READ OUT (calculate) EVERY POSITION! “It shouldn’t be so hard when it’s only 4x4!” Fun for all ages, challenging even for adults! Try challenge mode and timed mode! ### 5/5 — Great app *2014-05-04, version 1.2.1* A fun story, a great game, and more challenging than it has a right to be. I will learn it if it kills me. ## Frequently asked questions about Cho U’s 4 by 4 Go Puzzle ### What is Cho U's 4x4 Go Puzzle? Cho U's 4x4 Go Puzzle is a mobile game designed to teach and challenge players in the ancient game of Go. It offers various modes, from story-driven learning to competitive challenges. ### How difficult is Cho U's 4x4 Go Puzzle? The game features problems categorized into four levels of difficulty, catering to beginners, intermediate, and advanced players. This allows users to progress at their own pace. ### Does Cho U's 4x4 Go Puzzle have multiplayer? While the game doesn't feature direct head-to-head multiplayer, it allows players to compete globally through Game Center leaderboards in the Challenge and Non-Stop modes. ### What makes the stone designs unique in Cho U's 4x4 Go Puzzle? The stone designs are animated and change based on gameplay. They can transform into cute cats or dogs, display 'scary faces' when in Atari, and 'happy smiles' when capturing opponent stones. ### Can I replay problems in Cho U's 4x4 Go Puzzle? Yes, the 'Mode for Study' allows you to retry the same problems repeatedly until you have a full understanding of the solutions and techniques. ### What devices is Cho U's 4x4 Go Puzzle compatible with? Cho U's 4x4 Go Puzzle is available on iPhone, iPad, iPod, and Apple Watch devices, making it accessible across a range of Apple products. ### How often is Cho U's 4x4 Go Puzzle updated? The latest version of the app is 1.3, which was released on May 18, 2018. This indicates the app has not received updates recently. ### What is the age rating for Cho U's 4x4 Go Puzzle? The app has an age rating of 4+, making it suitable for young children and players of all ages interested in learning Go. ## Version history (last 1 release) ### 1.3 — 2018-05-18 This app has been updated by Apple to display the Apple Watch app icon. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*