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.

What’s New

Version 1.3

Supported iOS11.

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

Mike366363 ,

Great app

A fun story, a great game, and more challenging than it has a right to be. I will learn it if it kills me.


The Nihon Kiin
71.3 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Chinese, Japanese, Korean, Simplified Chinese, Traditional Chinese

Age Rating
Rated 4+
© 2018 The Nihon Ki-In. , ZOO Corporation.
In-App Purchases
  1. Rainy Pack $0.99
  2. North Pole Pack $0.99
  3. Snack Pack $0.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like