Yi Kuo – Go Problems SGF Collection (247 problems)

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• Create Date 2026-02-06
• Last Updated 2026-04-07

Yi Kuo (弈括) is a classical tsumego collection written by Huang Longshi, one of the greatest Go players of the Qing dynasty. First published in 1710, the book contains 247 life-and-death problems that range from tricky to brutally hard.

Don't let the age fool you — these problems are still used by dan-level players for serious training. The SGF format lets you load them into any Go app and work through them at your own pace. If you enjoy solving tsumego offline, you can also try our interactive Skill Tree for more practice.