Sunday Problem #14
This problem is from my recent teaching game against Daniel Hu 5d in the bga Strong Player Development Programme. A review of the teaching game can be watched here.
Black to play.
Solution
Black’s hane of combined with the placement of 3 is a strong combination – however, Black has to be wary of White’s resistance …
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 Note that this paper has not yet been peer reviewed.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 …
Sunday Problem #13
This problem is from the Japanese tsumego collection, 秀行創作詰碁傑作集 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 …
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 medium.com. 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 …
Sunday Problem #12
This problem is from another of my favorite tsumego collections, 傑作詰碁辞典 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 …
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 …
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.
Solution
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, …
Events
All times are in Helsinki time (eet with summer time).
Check the current review credits balance
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.
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