Preliminary study on anti-cheating in go

Since March this year, I have been collaborating with Associate Professor Attila Egri-Nagy of the Akita International University on go-related studies, with anti-cheating algorithms as my main interest.

Now, our first, preliminary study on manual anti-cheating analysis as well as intrinsic network strength assessment has been published. Note that this paper has not yet been peer reviewed. Me and Mr Egri-Nagy have a lot of work ahead of us, but the research does show some promise: we have already successfully employed the method described in catching cheating go players.

Kikashi and mochikomi

Kikashi and mochikomi are probably two of the most misunderstood and misused go terms. They are also two of the most unnecessary Japanese terms that still see use in English go jargon; this is because the same information can easily be conveyed by normal language without needing to resort to arcane Japanese terms.

Kikashi, or good exchange

A long time …

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Sunday Problem #13

This problem is from the Japanese tsumego collection, or ‘Collection of Shūkō’s tsumego masterpieces’ by Fujisawa Hideyuki (whose first name can also be read as ‘Shūkō’).

I have received some feedback that the Sunday problems have been too difficult, so this week I tried to pick a slightly easier problem. Still, in my opinion it is not fun if …

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Oscar on the Endgame

Streamed on Twitch on August 29, 2020.

Impact of Go AI on the Professional Go World – Response

Lee Hajin recently published an interesting article on the ‘Impact of Go ai on the Professional Go World’ on I found myself disagreeing with many of her points, and so decided to write my own remarks on the topic. Note that my intention is not to attack or ‘bash’ Lee’s opinions, but rather to bring forth another point of …

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Sunday Problem #12

This problem is from another of my favorite tsumego collections, or ‘Collection of tsumego masterpieces’ by Sekiyama Riichi, Sekiyama Toshio, and Sekiyama Toshimichi.

Sekiyama Riichi is famous for winning the first Hon’inbō tournament in 1941; Sekiyama Toshio is his son; and Sekiyama Toshimichi is Toshio’s son. As a fun trivia, the ‘Ri’ in Riichi is written with the same …

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Viktor on Ko-riosities

Streamed on Twitch on August 22, 2020.

Go Variant Server

As we know, recently the prevalence of go ai software has made it hard to organise tournaments online. If you organise a tournament with no surveillance, ai-users will inevitably pop up; and if you want to organise a prestigious and serious tournament, you have to do something like the 2020 Korea Prime Minister’s Cup, where all participants are required …

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Sunday Problem #11

This is a slightly modified version of a problem that came up in the league game between bellicose and yosai.

Black to play.

Black 1 is the key point. White 2 is forced, but Black can then form the necessary eye space with the descent of 3. After 4–5, white 2 is captured in an oiotoshi, …

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Area or territory – The future of go rules

(The historical information in this article is based on The History of Go Rules by Chen Zuyuan.)

As we saw in the first half of this post, go was first played with stone scoring, then with territory scoring, and then also with area scoring. Although territory scoring is nowadays attributed to the Japanese rules, they, similarly to the two …

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