Weekly Go problems: Week 112

Here are the weekly Go problems for week 112.

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

Easy Go problem

Even if the first move you think of doesn’t work, the process of finding a successful defense can reveal the true vital point.


Download SGF File (Go Game Record)


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


Intermediate Go problem

Once you establish that a group can’t be captured, you should switch your focus to whether you can attack it profitably.


Download SGF File (Go Game Record)


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


Hard Go problem

If you always stop reading too early, you’ll miss many fantastic opportunities.


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 Younggil An

Younggil is an 8 dan professional Go player with the Korean Baduk Association. He qualified as a professional in 1997 and won an award for winning 18 consecutive professional matches the following year. After completing compulsory military service, Younggil left Korea in 2008, to teach and promote the game Go overseas. Younggil now lives in Sydney, Australia, and is one of the founders of Go Game Guru. On Friday evenings, Younggil is usually at the Sydney Go Club, where he gives weekly lessons and plays simultaneous games.

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


  1. How is it that I got the Intermediate and Hard both on their second try but could not figure out the Easy one after many tries and had to give up and consult the PDF? Perhaps I needed that one warm-up to get the brain working…

    • Younggil An says:

      I thought the easy one is a basic life & death problem, but if it’s not that easy, it’s my fault. I’ll be happy if you learn something new through the problems. 🙂

    • It is easy because it is a “basic” shape. It just happens to be tough to read out if you do not know it 🙂

      Also, for the hard one (for example) there is really only one move that does not immediately let white live, so it is easy to get started on the right track 🙂

    • Ha. I had a similar problem.

  2. Thanks for the problems. The first one made me think a lot!!

  3. The Easy and Intermediate Problems were both tough for me, but I got the Hard Problem in only a couple of tries. The Hard was still fun, but compared to most of the other Hard and Intermediate Problems it didn’t seem all that difficult.
    Thanks again for posting these Weekly Go Problems. I enjoy every update.

    • Younggil An says:

      I thought the hard problems before were too difficult or hard to solve, so I downgraded the hard one a bit.
      If it’s too easy for you, you can try to solve the problem at once. In your actual game, you only have single chance to try. 🙂

      • I think the hard one was so easy because it only had one likely starting move (the rest lived to quickly).

  4. I think the problems were nicely judged. The easy problem is worth remembering, it’s a shape that occurs often in real games.

    • Yeah, I’ve seen that shape in dozens of games. It’s a “must know” for climbing out of the k ranks.

  5. I thought all the problems were pretty easy.

  6. In the easy problem, readers may appreciate if you show the sequence leading up to this, and especially why the push at Q2 is a mistake.

    • Younggil An says:

      Thanks for your opinion. There’ll be a chance to show why Q2 is a mistake in another problem.

  7. For the easy problem, where should black play after the ko? Black can’t play back at T2 because of the ko rule, and anywhere else that black plays seems to allow white to become a live “group” by playing at R1 (Q1 if black plays at R1). Am I missing something?

    • Younggil An says:

      That’s a good question.
      Black should play somewhere else, and if White lives with R1, Black can play one more move. As a result, White can live in the corner, but Black can play two moves in a row somewhere else for the compensation.