Weekly Go problems: Week 104

Here are the weekly Go problems for week 104.

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

Easy Go problem

It’s a capturing race, which means liberties are important.

ggg easy 104 picture

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

 

Intermediate Go problem

There’s no way to live with normal moves, but black has a tesuji to help him gain a move locally.

ggg intermediate 104 picture

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

 

Hard Go problem

Sometimes it helps to begin with the end in mind.

go problems 104 picture

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 likes teaching, learning, playing and writing about the game Go. He's taught hundreds of people to play Go, including many children at schools in Australia. In 2010 David was the Australian representative at the 31st World Amateur Go Championships. He's a 5 dan amateur Go player and is the editor of Go Game Guru. You can find David on Google+ and follow Go Game Guru on Facebook, Google+ or Twitter.

Comments

  1. Hi,

    Isn’t there another solution for the hard go problem?
    If I play S1 T2 P1 Q1 N1 M1 K1 R1 P1 R1 Q1 T3, then I fill R1 and it ends. But if W captures with T1, then I can cut at P1 and it’s dead right? Or am I missing something?

    • Younggil An says:

      Hi, you’re right.
      When I checked the problem, I missed that variation and David published, so it was my fault.
      Thanks for your another solution! :)

    • David Ormerod says:

      Thanks for pointing that out. I was short of time when I published these the other night and didn’t look carefully enough for other solutions.

      We’ve updated the problem now and added your solution too.

  2. My poor reading tells me your variation leads to seki

  3. Isn’t the intermediate problem from a game of Cho Chikun’s? I think I recall seeing this in a game before, it caused quite an upset.

  4. Forget about my last comment, my reading is really bad.
    I cannot solve hard problems even when i play the stones. And I am 1k …

  5. The hard problem seems to have a fatal flaw. After b-S1, w-T2, b-P1, w-N1 seems to live. Example follow ups:
    … b-K1, w-L1, b-Q1, w-T3, b-M3, w-J1.
    or
    … b-K1, w-L1, b-R1, w-T3.

    In the unlikely event that my analysis above is correct, I’ll stick my foot farther into my mouth to say that the best that Black seems to have from the starting position is a ko with b-S1, w-T2, b-N1, w-M1. Example follow ups:
    … b-K1, w-R1, b-P1, w-T3, b-N1, w-T1, b-Q1
    or
    … b-P1, w-K1

    P.S. Guest’s comment above seems to be correct, i.e., in his side variation, Black can kill instead of just making a ko. Cool!

  6. Hi! Thanks for the problems David!

  7. Hi,
    In the hard problem, what if white connects at N1 after P1 instead of capturing the stone at S1?

    • As above indicated, there is a move by black that kills white in that case. Ti’s An unexpected move until you think of a proverb.

    • Younggil An says:

      You’re absolutely right, Ryan. The problem was wrong because of N1. Would you try to solve it again please?

  8. The intermediate problem was really instructive for me. The hard one was simply “wow”

  9. I see the hard problem has been fixed :)

    • David Ormerod says:

      Haha, yes. Younggil and I both overlooked some of the other possibilities this week… :)

      It’s good to know that people are paying attention though.

  10. So I don’t need to feel depressed I couldn’t solve the hard problem at all first time around – that’s a relief.

    This time the flow of moves is much more natural.

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