Weekly Go problems: Week 126

Here are the weekly Go problems for week 126.

Black plays first in all problems and all solutions are labeled ‘correct’. Have fun!

Easy Go problem

The eye stealing tesuji is useful in life and death problems too.

 

Download SGF File (Go Game Record)

 


Download the solutions to the easy problem as an SGF or PDF file.

 

Intermediate Go problem

If you focus too much on capturing stones, you’ll often overlook good moves.

 

Download SGF File (Go Game Record)

 


Download the solutions to the intermediate problem as an SGF or PDF file.

 

Hard Go problem

Reduce White’s eyespace, then look for a vital point.

 

Download SGF File (Go Game Record)

 


Download the solutions to the hard problem as an SGF or PDF file.

 

Still want more Go problems?

You can find Go books packed full of life and death problems, tesuji problems and other valuable Go knowledge at the Go Game Shop.

Discuss other possible moves

If you have any questions or want to discuss any of these problems, please leave a comment below at any time. You can use the coordinates on the problem images to discuss a move or sequence of moves.

You can also download the solutions as a PDF or SGF file by clicking the links below each problem.

About David Ormerod

David is a Go enthusiast who’s played the game for more than a decade. He likes learning, teaching, playing and writing about the game Go. He's taught thousands of people to play Go, both online and in person at schools, public Go demonstrations and Go clubs. David is a 5 dan amateur Go player who competed in the World Amateur Go Championships prior to starting Go Game Guru. He's also the editor of Go Game Guru.

You can follow Go Game Guru on Facebook, Twitter, Google+ and Youtube.

Comments

  1. Great problems! I particularly enjoyed the Hard Problem.

  2. I like the hard one, have not seen that before.

    • David Ormerod says:

      It reminds me of another, somewhat similar technique for preventing ko, but I just reviewed the previous problems and couldn’t spot an example of it. Maybe I’ll post that problem later :). You’ll probably know it already. The idea is much more common and the tesuji is also on the first line.

  3. Thanks for the problems, David, I was missing them!

    • David Ormerod says:

      Thanks jangalf! Sorry about the absence. I think that we should be able to post other articles more regularly again now that the jubango is finished. It was a huge amount of work this year making the commentaries and trying to keep up with it.

  4. Good ones. One of those strange weeks in which I got the hard problem immediately but fumbled around for awhile on both the easy and intermediate puzzles.

  5. Hi David, I’ve been lurking at the problems part of your site for quite a while now since I discovered your excellent site and problems.
    I found the intermediate one quite hard but it sure is indeed a useful tesuji to remember. BTW , Isn’t W last play at G2 a mistake (better played at G3) ?

    • Younggil An says:

      Thanks for your comment Gil.

      Yes, G2 might be better for White, but probably David wanted to show more dramatic result, so it’s easier to understand the effect of the tesuji. 🙂

    • David Ormerod says:

      Hi Gil, thanks for stopping to say hi!

      You’re right that White’s play isn’t ideal in that variation (she should exchange D3 instead, before playing the hane, like in the other variation). Sometimes we show a variation where White self destructs as the main solution because I think it’s also helpful to know that White can’t do something.

      Some readers don’t agree with that, but in some problems if you always show perfect play, then both players should compromise and you never arrive at the key point of the problem (which doesn’t really help people to learn as much).

      • Thanks both for your reply. Of course showing white self-destruct is sometimes improtant and enlightening, only thing is that maybe you can add a comment at the end of the variation saying it was white suboptimal play ….
        I am not complaining, though it was pretty obvious, I just wanted to make sure I did not ovelook anything, and say hi !

  6. It is really a good exercise for my kids. Eric could solve all the three problems shortly. Even though Peggy spent more time and made several bad moves, at least she finally knew how to deal with the death and life problems when she is the same situation.

    • Younggil An says:

      Wow, your kids must be pretty strong! 🙂 I hope they enjoy solving those weekly problems and help them to enjoy Go more.

    • David Ormerod says:

      Hi Ling,

      Wow, that’s great! I’m happy to see that you’re teaching your kids Go as part of their homeschool curriculum. And nice blog, by the way 🙂

      • We’re very pleased to know that you are happy for what we have done in our homeschool curriculum. To tell you ya good news, David, yesterday, Peggy went up from 4dan to 5dan in the Changhua Magistrate Cup Tournament. She was finally awarded as the fourth place.

  7. Easy: known shape
    Intermediate: I would definitely have gone for the crosscut tesuji but the hint was a true giveaway.
    Hard: pruning
    – reduce eyeshape first: ko comes to surface
    – avoid ko; done
    remained to verify: start at 3 does not work (verified by 2 at 1)

    Altogether a width of about 4 and a depth of about 5.

  8. Jim King says:

    Good problems btw.

    On the hard problem isn’t white’s response at N1 after black does O1 a mistake? I think white can get out with a response at O2.

    • Younggil An says:

      Thanks Jim for your opinion.

      If White responds at O2 after Black O1, Black can throw in at N1 and White can make only one eye.