A few simple rules ... limitless possibilities

BGA Go calendar for 1977

12 difficult problems: graphic and ascii versions.

GoBase.org

A collection of over 1,000 problems, including the famous Korean Problem Academy and Ancient Wei-qi Patterns.

GoProblems.com

Over 9,000 problems. A good variety of problems, in an interactive format. You can see the solution, and have the latter shown in a choice of several formats. Anyone can add new problems to the site.

Hitachi

Two new problems each week by top Japanese amateur Minoru Harada; answers the following week. Over 500 problems so far. The site has separate Japanese and English language sections.

The IGS-PandaNet go server

Each of these pages leads to 20 life and death problems.

• Tsume Go
• The Earth Spider
• The Five Dragons
• The Apparition
• The Next Move
• The Immortals
• The Fan
• Contemplation
• The Spider Game
• Candle

Sensei’s Library

Various problems and sets of problems. In particular, see:

• Kanazawa Tesuji Series
• Tsumego From Games
• Daily problems

Steve Bailey’s problem of the month

A problem for every month from January 1996 to December 2005.