How should we learn from the AI?

My recent work got me again thinking about the nature of learning and understanding. More precisely, I got interested in thinking about the best way to use the ai in go studies.

Recent research (for example, Thinking, Fast and Slow by Daniel Kahneman) suggests that expertise in a domain is not a single skill but rather a large collection of …

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Sunday Problem #17

This problem is also from Xuanxuan Qijing, or ‘The Gateway to All Marvels’. This problem is titled , or the ‘Fox-Catching Arrow’, apparently because the shape ‘looks like the arrow’s head’ – personally, however, I fail to see the resemblance.

While its name may be dubious, the problem itself is one of the most ingenious I have seen.

Black …

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Oscar on Shape and Shortage of Liberties

Streamed on Twitch on September 26, 2020.

European Professional Championship 2020

Edit 25 September: there is now a tournament page with results on European Go Federation’s website.

Tournament details

  1. Tournament with eight players and seven rounds round robin
  2. Pairings and colours are fixed from the start
  3. Games are played on the Pandanet Go Server (igs) with the following parameters: Japanese rules, 6.5 komi, 75 minutes basic time per player, …

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September 24–27: European Professional Championship Twitch Streams

Sorry for the sudden update! This week, on September 24–27, there will be in total seven streams on the European Go Federation Twitch channel, and two of our teachers, Antti and Viktor, will participate in commenting the games.

The tournament participants are, in the order of drawing:

  1. Alexandr Dinershteyn
  2. Ilya Shikshin
  3. Andrii Kravets
  4. Pavol Lisy
  5. Artem Kachanovskyi
  6. Mateusz Surma …

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Sunday Problem #16

This problem is from Xuanxuan Qijing, a Chinese tsumego collection classic from the 14th century; its English translation is named ‘Gateway to All Marvels’. This collection, along with Gokyō Shumyō, forms a set of tsumego books that all aspiring professional players learn by heart.

All problems in Xuanxuan Qijing have a title; this problem is called or ‘An Old …

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Antti’s Guide to Studying Professional Games

The domain of my old blog,, is expiring in a few months, and after giving it some thought I decided I will not renew it. Instead, I am ferrying any useful non-personal material over to – in the end, this amounted to just this guide and my English-translated bachelor’s thesis.

I posted this guide originally in September …

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Antti’s Bachelor’s Thesis: Building a Human Master

I wrote this bachelor’s thesis originally in Finnish in October 2013 and posted its English version on on November 1, 2013. Its language has been slightly modified and improved for this re-posting on


Expertise is a topical subject in our ever-changing society. This study set out to find what expertise means and how an individual’s expertise …

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Sunday Problem #15

This problem is from a classic tsumego collection by Hon’inbō Shūsai called or Shikatsu Myōki. This name is notoriously difficult to translate into English: while shikatsu means life-and-death, myōki is a Buddhist term referring to excellent adhering to Buddhist teachings. Presumably this is meant in the sense that ‘if you manage to solve all these problems, your reading will …

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Viktor on Ko-riosities #2

Continuation from an earlier lecture.

Streamed on Twitch on September 12, 2020.


All times are in Helsinki time (eet with summer time).

2nd Corona Cup on November 2 – December 15! Tournament details are here.

Gothenburg Online Open on December 5–6! Tournament details and registration are here.

New pairing for the online league made every 1st and 3rd Saturday of the month.

Public lectures on Twitch every 2nd and 4th Saturday of the month at 1 pm.

Jeff and Mikko stream on Twitch on Fridays at 6 pm.