Sunday Problem #75

This is a relatively simpler classic problem.

Black to play.

Solution
Solution (1)
Black’s task in this problem is to prevent 2 and
a from becoming two eyes for White. Since the eye at a is already secure, this means Black needs to prevent the eye at 2; for this, the throw in of 1 is the key move. If …

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Sunday Problem #74

I arranged this problem from a shape that appeared in my training game with KataGo. Because there is a lot of empty space within the white group, the reading gets rather complicated.

Black to play.

Solution
Failure (1)
It’s a good idea to consider the hane of black 1 first, but this time it’s not enough to capture White. After …

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Sunday Problem #73

I arranged this problem from a shape that came up in the league game between Zdzieli and Ethelor.

Black to play.

Solution
Failure (1)
The attachment of black 1 looks like a tesuji, but is not quite enough to kill. White is able to form two eyes with his response of 2–6.
Failure (2)
Following, Black might consider cutting …

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Matias on How to Handle Weak Stones

Streamed on Twitch on October 23, 2021.


Sunday Problem #72

This is a common corner shape that all dan players should know by heart.

Black to play.

Solution
Solution
If there is something in the corner, it has to start from Black’s placement of 1. After this, White has two eye-forming bumping moves to choose from; generally, forming the farmer’s hat with white 2 here is best. After 3–6, it …

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Sunday Problem #71

I arranged this problem from a corner shape that can show up if you invade a two-space high enclosure from a star-point stone.

Black to play.

Solution
Original shape
The problem shape comes from the corner invasion sequence of 1–8. White’s descent of 7 is a bit of a new move, and solidly connecting instead used to be common; but …

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Oscar on How to Not Become a Caveman

Streamed on Twitch on October 9, 2021.


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Davide Grasso, an ngd student, has this September created a training league with the aim of allowing its participants to play serious games in a friendly environment. …

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Sunday Problem #70

This problem is arranged from a shape that appeared in a recent game between Oscar and Lucas Neirynck 6d. The presence of White’s t14 stone affects the corner considerably, and the correct solution is nothing short of ingenious.

Black to play.

Solution
Failure (1)
The position of white ‘a’ suggests that black 1 should be an efficient move for procuring …

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Antti on Light and Heavy Stones and Sabaki

Streamed on Twitch on October 2, 2021.


Events

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


League standings and pairings updated at the start of each 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.