Observed arrival · 2026-10-10
Xuanxuan — Go’s 700-year-old puzzle book, in lessons
An interactive Go study app turns problems from the 1347 Xuanxuan Qijing into short, bite-size lessons.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Go players practicing life-and-death and tesuji problems
- Worth noticing
- The page credits digital positions to Vít Brunner and says solutions were generated with KataGo.
Field notes
The lesson format is five problems at a time, and the page says missed problems can be revisited after seeing a refutation. A heart is deducted for a miss and replenishes at one per minute. The page credits its digital positions to Vít Brunner and says solutions were generated with KataGo.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue