Improve your go by solving go problems. All problems hand-picked from the database. Over 4,500 problems to start, and more will be added over time. This app will automatically calculate your rating as you attempt the problems.

Life and death and tesuji problems are the fastest way to get stronger at go. This app will help you practice every day.

App features:
* Over 200 free problems
* Retina display on iPhone and iPad
* Bookmarking your favorite problems
* Auto-problem mode finds problems at your level and adjusts to your skill
* Track your progress at each problem difficulty level
* Two-finger swipe to quickly change between problems

What's New

Version 1.07

- 786 of lowest quality problems replaced by new higher quality problems
- Approx 100 additional problems added

Ratings and Reviews

HB214 - Great App & Learning Tool!


Since then ive upgraded to an iPhone 6, this app functions very well except for one feature.

There are several problems that have "text" added to each asking questions and giving reasoning for their solutions. However it cannot be fully read either in portrait or landscape mode for some reason. Please fix this with the next update.

Ive purchased about 1/2 of the additional Go Problems already and wish to fully understand them without fighting my device every time. Thanks!

Good life and death problems


Surprisingly good life and death problems for high-kyu level player. Solving problems raises your estimated kyu level as you go. Not sure yet if your session is saved, or whether you have to buy upgrade. No ads. I give it 4 stars because you cannot go back to previous problem, or I cannot figure out how to do that. Note you have to touch the text msg to see the full message.


Melting clocks

I'm so pleased to have such a great go problems app; having used many books on go problems, I've been waiting for this! Most of the content works flawlessly, my only complaint is that I found a couple of problems with broken solutions but I don't see a way to flag them. Keep up the good work, and thank you!


Adumbration, Inc.
37.3 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Czech, German
Age Rating
Rated 4+
© 2017 Adumbration Inc
In-App Purchases
  1. Standard Problem Set 1 $2.99
  2. Standard Problem Set 2 $2.99
  3. Standard Problem Set 3 $2.99


  • Family Sharing

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

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