Sunday Problem #33
Here is an easier problem a ridiculously difficult endgame problem that somehow found its way to a life-and-death problem collection.
This is from the Nihon Ki-In’s 三段合格の死活150題, or 150 Graded Life-and-Death Problems for 3-Dan Players.
Black to play.
Solution
The book mistakenly says that the bump of black 1 is correct, followed by white …
Sunday Problem #32
This is an original problem I thought up two days ago. The shape is closely linked to Sunday Problem #31, but this problem highlights an aspect of the base problem that people more rarely think about.
Black to play.
Solution
Black 1 is the correct starting move – even though at first glance it appears to make …
Sunday Problem #31
This problem is from 秘伝問題集 (Hiden Mondaishū, or Secret Problem Collection) by Hon dōjō, whose students include Fujisawa Rina 4p, Ichiriki Ryō 8p, and Shibano Toramaru 9p. The creators of the collection most likely had Igo Hatsuyō-Ron as their model, what with its originally having been a secret of the Inoue school, but having Mynavi openly publish the …
Sunday Problem #30
Similarly to Sunday Problem #29, this is from the Igo Hatsuyō-Ron.
Black to play.
Solution
The solution of this problem involves a very rarely seen technique. Black has very limited space in which to form two eyes, and must therefore get crafty.
The moves 1–6 are commonsensical and, while black 7 looks like bad shape, it is also …
Sunday Problem #29
Since everybody hopefully has a bit more free time at this time of the year, I will briefly continue on the subject of difficult problems.
This problem is from no other than Igo Hatsuyō-Ron, probably the most difficult collection of classic tsumego. In the present day, players aspiring to become professional are the core audience of the book; historically, the …
Toroid Go 101
With the Christmas Toroid Tournament upcoming, it is time to cover some basic toroid go strategy and tactics. Unlike pixel go, I am not extremely familiar with toroid go, but I have found it to be close enough to regular go except for the obvious difference of there being no edges.
Above is an example of a toroid go …
NGD Christmas Toroid Tournament on December 27
List of registered participants
Rules
Format: Four-person leagues, followed by a knockout tournament with max. 8 players.
If two players get the same number of wins in a league, the winner of the mutual game advances to the knockout tournament.
If three players get the same number of wins in a league, they all advance. An …
Sunday Problem #28
Sometimes it is good to spend time and effort trying to solve difficult problems. Even if you are unable to find the solution, this will improve your reading and, more importantly, help build character in a way that you will get less demotivated by difficult game positions.
This problem was first shown to me by ‘Bass’, a Finnish go player, …
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