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

Approaching 20000 problems. A good variety of problems, in an interactive format. Anyone can add new problems to the site.

Hitachi

Two new problems each week, one elementary and one intermediate, by top Japanese amateur Minoru Harada; answers the following week. Around 2000 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.