Weekly Go problems: Week 140

Here are the weekly Go problems for week 140.

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

Easy Go problem

One of the Golden Rules of Go is “take care of yourself when attacking.”


Download SGF File (Go Game Record)


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


Intermediate Go problem

There are two basic tactics in capturing races; reduce liberties or increase them. You’ll need special tesuji here.


Download SGF File (Go Game Record)


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


Hard Go problem

The aji in Black’s lone cutting stone is surprisingly strong! Just be careful in the corner.


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.


  1. I think for the hard go problem it would be more fun if the computer would hane. More possibilities to mess up there then to miss the throw in (especially after the hint).

    • Younggil An says:

      At the end of the solution do you mean? That’s a good idea, and that might be more tricky for Black.

      • Yes. Sorry for being a bit cryptic. I didn’t want to give away too much 🙂

        Seems to me that that variation is more tricky. I was reading into it before entering my answer. Then was mildly surprised to find this, in my opinion easier variation, to be the answer. I was happy to see the variation included in the answer-tree at least 🙂

        Side Note: Maybe it would be possible to randomize the route the computer takes to some extend? Not sure how it works on the programming level, but it would be fun to see the computer try different routes if you retry the problem again. At least for some problems there are multiple answers and I imagine not everyone going through all possible variations. Could be helpful.

        On the other hand, this might be too much effort. Best way is after all to read and be sure your answer is correct without needing the computer to check your answer 🙂

        Don’t often post here, but I’m a long-time reader. Always psyched to solve the weekly puzzles and I really like your articles & insight into the games 안영길 선생님.

        • Younggil An says:

          Hi Zeno, thanks so much for your feedback. That sounds a really good idea, and I’ll talk to David to figure out if that’s available with the program we’re using.

          I’m glad that you’re fond of the game commentaries. 🙂

  2. 2015/oct only?! Have you stopped with the weekly problems?

  3. Anonymous says:


  4. Anonymous says:

    Pls post harder problems
    Btw i’m 25 kyu

  5. What happen to the weekly go problems? I haven’t seen for a long time…