Showing posts tagged: sunday-problem
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, …
Sunday Problem #10
This is the cover problem of Mateusz Surma’s tsumego book series You won’t get dumber while thinking.
Composing go problems is tough work. It can take hours just to come up with one good problem and, once you publish it, the problems themselves are not even copyright-protected – only the problem collection and the answers. This is why I …
Sunday Problem #9
Like Sunday Problem #8, this is also from Guanzi Pu.
Black to play.
Solution
Black’s 2-1 placement of 1 is the key to solving this problem. 2–6 are White’s correct resistance, and the result is a kō for White’s life.
If Black starts with the hane of 1, white 2 lives unconditionally.
Sunday Problem #8
This problem is from Guanzi Pu – possibly my favourite of the classic problem collections thanks to its varied and relatively difficult problems.
While a (most likely illegal) pdf version of the book been posted around on Western go websites, its solutions often seem to be wrong. I would instead recommend interested players to invest in a six-volume physical copy, …
Sunday Problem #7
Black to play.
Solution
Sunday Problem #6
This Sunday we have a set of two problems. What difference does Black’s extra liberty make?
Black to play in both problems.
Solution
KataGo thinks the sequence from 1–5 is generally best for both sides: Black lives in gote while White makes a profit in the corner.
In tsumego terms, i.e., when life or death is …
Sunday Problem #5
Black to play.
Solution
Sunday Problem #4
This problem was created by Lee Eodeokdung 1p. He showed to me at the European Go Congress 2017, and it quickly became one of my favourite tsumego.
Black to play.
Solution
Sunday Problem #3
This is a famous tesuji problem.
If you can see the correct move at first glance, you have done your homework well! On the other hand, if you don’t, this can be a difficult nut to crack.
Black to play.
Solution
Sunday Problem #2
This Sunday we have a challenging problem.
Problems with lots of open space or big eyes, such as this one, are difficult to read by brute force. Instead, you need to rely on your shape knowledge and, if that doesn’t help, on your shape intuition. The trick is to try to reduce the big and difficult-to-read shape into something smaller and more familiar.
Black to play.
Solution
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