Weekly Go problems: Week 109

Here are the weekly Go problems for week 109.

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

Easy Go problem

Black only has three liberties, which means you can’t allow white to have more than two.


Download SGF File (Go Game Record)


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


Intermediate Go problem

This position sometimes appears in real games. If black can survive the crisis, the result will be good for him, but beware of wishful thinking.


Download SGF File (Go Game Record)


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


Hard Go problem

Sometimes, in a game, you might need to make life in this sort of position. Don’t rush unless you need to.


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. great problem Mr. An the hard problem is very good…it definitely help to strengthen a player skill in life and death…..=)

  2. I definitely enjoyed seeing the hard problem, though I couldn’t solve it myself–it highlighted a bunch of my bad habits when solving L&D problems.

    On another note, the SGFs that you linked to won’t open in Eidogo, though I don’t know why.

  3. The hard problem is so amazing ! Very helpfull in real game. Without this problem, i would not even think about what kind of move. Thank you very much.

  4. Very nice problems, as always: thank you! The difficult one is quite instructive. It looks like a natural position, it could appear in a game. But it makes you wonder if the white stones shouldn’t have been placed in a different way, making it impossible for black to live. The end result looks very good for black, even if his life is small and the white position is thick. Or?

    Kind regards,

  5. Most problems are life and death problems, sometimes a fuseki problem. Great. I wondered whether it would be a nice idea to throw in an endgame tesuji problem once in a while. Moves that gain extra points are quite interesting and useful too, I guess.

    Kind regards,

    • Younggil An says:

      Thanks Paul for your good ideas.
      I’m not sure if a fuseki problem is available, because there would be so many possible variations. However, endgame tesuji sounds alright. I’ll think about it and try to make one.
      Thanks again. 🙂

  6. Charlie H (2D) says:

    I like the hard one a lot for training purposes. It doesn’t have the pizzazz of some other problems but is the most useful problem for thinking about realistic real game things that I’ve seen in a very long time. Nice work!

    Btw I think there is a variation which should be added as it’s difficult for w to kill: bf2, wb3, bb2, wa2, bc3, wb5, be4, we5, bd2, we1. Maybe it’s just me, but I didn’t find the last white move obvious at all.

  7. Hard is somewhat easy, but undoubtedly useful. Thanks for posting the problems, as always!

  8. My first instict in the hard problem was to play B1 because it makes the corner and C1 look like becoming eyes.

  9. Hard was a good problem – I only got ko. I get the feeling I ought to have known the answer move 1. But I didn’t. Thanks.