Showing posts tagged: tsumego


Sunday Problem #35

Like last week’s problem, this is also from Guanzi Pu – and, in fact, also from Xuanxuan Qijing, where its title is (sui-raku-seki-shutsu). Literally this means a river’s water receding and the riverbed’s rocks’ becoming visible, but the figurative meaning is that of truth becoming revealed.

Black to play.

Solution
Solution
This diagram shows White’s strongest resistance. …

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Ōhashi Hirofumi’s Banri Ikkū

I love the smell of tsumego in the morning.

I just received in mail the newest, recently-published tsumego book from Ōhashi Hirofumi 6p, our Nihon Ki-In English class member as well as a regular visitor to European go tournaments. The problem collection includes some of Ōhashi’s most interesting creations from the past 20 years, with the difficulty level of …

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Sunday Problem #34

This is a slightly modified problem from Guanzi Pu. Although most of Guanzi Pu’s content is endgame (it’s even in the collection’s name, or Endgame diagrams), this is clearly a life-and-death problem.

Black to play.

Solution
Solution (1)
Black has no choice but to start by driving White down to the first line with 1–6. After this, however, …

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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 150, or 150 Graded Life-and-Death Problems for 3-Dan Players.

Black to play.

Solution
Gote seki
The book mistakenly says that the bump of black 1 is correct, followed by white …

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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
Solution (1)
Black 1 is the correct starting move – even though at first glance it appears to make …

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Sunday Problem #31

This problem is from (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 …

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Sunday Problem #30

Similarly to Sunday Problem #29, this is from the Igo Hatsuyō-Ron.

Black to play.

Solution
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 …

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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 …

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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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Sunday Problem #27

Finland is celebrating its 103rd Independence Day today, and so, for this week’s problem, I ended up composing a tsumego in Finland’s shape.

There’s a lot of open space, which complicates reading, but as far as I could see there is only one solution.

Black to play.

Solution
Failure
A straightforward defence such as black 1, planning to sacrifice just …

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