Weekly Go problems: Week 123

Here are the weekly Go problems for week 123.

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

Easy Go problem

Taking away eye shape often helps to reduce liberties too.

 

Download SGF File (Go Game Record)

 


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

 

Intermediate Go problem

Looking for moves that create miai helps you to maintain your balance in the middle game.

 

Download SGF File (Go Game Record)

 


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

 

Hard Go problem

Never write your dead stones off completely, as long as they still have liberties.

 

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 to have these problems. The hard problem is quite tricky, nice! The intermediate one is always difficult in a different way, which is interesting.

    Kind regards,
    Paul

  2. Anonymous says:

    Thanks for the problem 🙂

    But let me ask you: Will you publish future go problems on GLIFT? And – this would be a dream – will you publish the old ones on GLIFT as well?

    • Younggil An says:

      Thanks for your question. We’ll do that when it’s completely set up. I doubt about the old ones though.

      • Josh Hoak says:

        We’re going to switch over to using Glift very soon. I just updated the version of the JS library to 0.17.1 and then we have to update the wordpress plugin. And actually, we may be able to completely do away with Eidogo once we’ve updated. I would guess you’ll see us using the plugin more widely sometime during this week.

    • David Ormerod says:

      Yes, we’re going to change everything over to use Glift very soon, including the older problems. I just need to catch up on some other work first so I have a few hours free to code and update the database of old posts.

  3. Thank-you for the problems David.

    Hard go problem: White would take the ko @ N1 first and force Black to use a ko threat before coming back @ Q3.

    • Younggil An says:

      You’re right logan.

      The right answer is to make a ko, so we assume that Black has some invisible ko threats somewhere else. 🙂 Otherwise, it’s quite difficult to show the correct sequence with the ko fights.

      • Unless I’m missing something, N1 should be the only correct solution, because after the Q3 answer given, it’s a direct ko, while if w fights the N1 ko, I dont think b can finish the ko directly.
        For example, b connects N1, Q3, L1, M3, R1, K1, K2, L2, J1, M2
        or N1, Q3, K1,L1,L2,M3.
        Am I missing anything (as usual)?

        • Younggil An says:

          Thanks for your variations Stefan.

          I understand that the N1 is the right move for White, but I’m sorry that I don’t get your variation after N1. I don’t think they’re going to play on far to K lines, so would you explain again please?

  4. Great Problem. Thanks!

  5. Re the hard problem, I tried P2, P3; P1,Q3; N1, M1 captures, “end of variation”. N1 is a mistake for white. What is going on?

    • David Ormerod says:

      Hi John,

      With the problem viewer we use now, if you add your own variations it will remember them. Even if you misclick there by mistake (for White) it remembers that move and keeps playing it back to you. We’re going to update to new software called Glift very soon, and it doesn’t do that.

  6. Sorry, ignore that. I wrote down the moves wrong. It was P2,P3;
    P1,O1; Q3, N1?; M1 captures stones, “end of variation.” However,
    it isn’t doing N1 now, rather the correct Q1. Sorry for the bother!

    • Younggil An says:

      I’m sorry, but I can’t still get your question.

      After Black Q3, White can take Black’s two stones at Q1. White won’t play at N1 to be captured.

  7. Greatly appreciated, as always.
    I have run through the series again for practice. They make one of the finest collections on the web.

    • Charlie H (3D) says:

      I know what you mean, especially I still remember seeing the week 30 hard problem, and just not believing there was a solution. There is some fine tsumego on display here :).

  8. All the go problems on GLIFT. That’s GREAT!!!

    I was the one who suggested this earlier (however I forgot to give me some name). Thanks for the great job!

  9. a very long week. did you give this up, dave?