Problems and Exercises

There are more than two thousand go problems on Sensei's Library, often with annotated solutions. Here is a non-exhaustive^[1] list of indexes to such Go problems and a few isolated pages.

Before you add a problem to SL, kindly check about posting problems.

Table of contents Classical Problem collections Indexes by difficulty level Indexes per game stage Indexes per specific tactics Indexes per essential concepts Problem sets from real games Other indexes Challenges, Puzzles and Oddities Elsewhere (not on SL) Conventions Discussion

Classical Problem collections

(From easy to difficult)

• Gokyo Shumyo Tsumego Series (500+ problems, Classified by type) (碁経衆妙 19c. Japan)
• Gokyo Seimyo Tsumego Series (143, Mixed, including 44 Tesuji inside territories) (碁経精妙 19c. Japan)
• Xuanxuan Qijing Problems (350, Mixed) (玄玄棋經 14c. China)
• Xian Ji Wu Ku Problems (148, mostly Life & Death) (仙機武庫 17c. China)
• Shikatsu Myoki Tsumego Series (168, Life & Death and Capturing race) (死活妙機 Early 20c. Japan)
• Igo Hatsuyo-ron Problems (183, Life & Death and tesuji) (囲碁発陽論 18c. Japan)

Indexes by difficulty level

• Beginner Exercises (300+ problems)
• Beginner move function problems (5)
• Kyu Exercises (200+)
• Dan Exercises (~100)
• Have a go at them Unsolved problems

Indexes per game stage

• Opening exercises
• Middle Game Exercises
• Endgame problems

Indexes per specific tactics

• Spot the Atari
• Bent four in the corner exercises
• Snapback Workshop
• Under The Stones Problems
• Ladder problems and exercises
• Capturing Race Exercises
• Stone Escape Problems
• Hane connect exercises
• Door group exercises
• Six die exercises

Indexes per essential concepts

• Joseki Related Life And Death
• Joseki exercises
• Shape Problems
• Miai Exercises
• Thickness Exercises
• Haengma exercises
• Don't help your opponent exercises
• Shortage of liberties exercises
• Positional Judgment Questions

Problem sets from real games

• Tsumego from games (170+)
• Tesuji from games (18)
• Big Question Mark

Other indexes

• Random Tsumego
• One Day 1 Problem
• Hikaru no go Problems
• fusojigen / problems
• Symmetric Problems
• Blind spot
• Reading problems
• Isolated problems
• Tim Hunt's problems
• Hitachi Go Problems (outside link to Internet archive; only a part of the original 2,000+ problems are archived)
• Ko Threat Exercises

Challenges, Puzzles and Oddities

• Worst Move Problems: Play the worst possible move
• Oddities: singular puzzles
• Rules Disputes: a collection of disputed outcomes of a game
• 3x4 Problems: small boards set surprising challenges
• Retrograde Analysis: Reconstruct the problem from the solution
• Retractor Problems: Take back a move
• Three Liberties Go Problems: Exercises on this go variant
• Construction Problems: Problems where you must construct a certain shape or position, which departs from the game's nature.

Elsewhere (not on SL)

See Go Problems on the Internet

Conventions

• About posting problems
• Tsumego conventions
• Shitsudai - problem with more than one solution or no solutions
• Assumptions of yose problems
• Board geography

Discussion

• The problem with Go problems
• Go problems - The Fudge Factor

[1]

You can also do an advanced findpage, with pagetype "none", setting the desired difficulty and keyword "problem" plus others like "opening", "tesuji", ... . If looking for a topic exercise you can add the topic to the name field.