Matias on Flexibility in the Opening

Streamed on Twitch on August 28, 2021.


Sunday Problem #64

This gem of a problem is based on a shape from Guanzi Pu.

Black to play.

Solution
Solution (1)
This problem is difficult to solve if you’re not familiar with the tesuji of black 1. This sets up two ways for Black to get the forcing moves necessary to form life in the corner: 2–11 here is the first of …

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Sunday Problem #63

This is a somewhat more challenging problem featuring a shape that could appear in a real game.

Black to play.

Solution
Failure
Black 1 may look like a promising move, but it lets white live with 2. Following, Black can get 3–8 in sente for a fairly good endgame profit, but this is still a failure because the core white …

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Antti on Cockroach Style

Streamed on Twitch on August 14, 2021.


Semeai 101

Recently on the ngd Discord server there has been some discussion about how to precisely read out capturing races, so I thought to write a post on them. As the topic is broad, it is of course impossible for a single post to cover even nearly all of it, but hopefully this will at least get the reader started.

Dia. …

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Sunday Problem #62

Similarly to Sunday problem #61, this is a classic life-and-death shape.

Black to play.

Solution
Solution
Black 1 is the only move that prevents the three white stones from escaping while also improving Black’s eye shape. After 2–4, Black’s throw-in of 5 and the subsequent oiotoshi squeeze ensure two eyes for her group.

Oscar on Golden Groups

Streamed on Twitch on August 7, 2021.


Sunday Problem #61

This is a classic corner problem.

Black to play.

Solution
Solution (1)
The diagonal move of black 1 is a tesuji in this shape. If White resists with 2, Black cuts the white shape with 3–6 and finally wins a local capturing race with 7.
Solution (2)
White’s connection of 2 here is an alternate resistance, but it fails to Black’s 3–7. In both solution diagrams, black 1 is a key point for the local capturing race.

Sunday Problem #60

This problem is based on a shape that appeared in a recent ngd league game between Sanderbaduk and irglbriz; July league subscribers can view the game here.

Black to play.

Solution
The start
Black cannot form two eyes locally, so she has to depend on White’s outer shape problems. 1–2 is a useful preparation, after which black 3 attempts …

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Contemporary Go Terms: Airport and Toothpaste

Learning new go terms has a bigger impact on one’s improvement than many players give credit for. While the terms themselves are mere placeholders, they refer to shapes and strategical concepts in the game that are usually worth learning. For instance, imagine not having a term for ‘hane’ or ‘one-space jump’; besides the terms allowing for smooth communication between players, …

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