Tsumego – Intermediate #4
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This is the fourth in a series of tsumego walkthroughs for intermediate players. This problem is rated for single digit kyu (SDK) players. If you’re interested in other tsumego problems, you can visit my Tsumego archive page.
See if you can spot the correct opening move and try to read out the possible variations until you find one that works for black. Once you think you’ve got it, or better yet, know you’ve got it because of your thoroughness, scroll down and watch the video walkthrough of the solution.
Black to Kill
Warning!
Don’t scroll down unless you are ready to view the answer to the problem!
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Let me know what you think of this walk through. I enjoy and learn from your comments.
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6 Comments so far
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For your first refutation, white 4 can’t descend to C1 because it’s self-atari. Black 5 would just capture at B2, instead of moving at A6 :-)
Of course, white can still live with B2 instead of C1.
Comment by Luis April 20, 2009 @ 17:39For your first refutation, white 4 can’t descend to C1 because it’s self-atari. Black 5 would just capture at B2, instead of moving at A6 :-)
Of course, white can still live with B2 instead of C1.
Comment by ludwig1024 April 17, 2009 @ 18:35Hi, I don’t want to sound to harsh but I think there are several mistakes in your variations prior to the solution:
The first thing you played was: A3-A2-B1-C1 and then black at A6 but it seems that white is in atari here and black could simply take i think the correct answer to B1 would be to take at A4 making B2/C1 miai for life.
The second variation was like: B2-A2 and then C1 but playing at B1 instead seems to be better for black here since white cannot cut (shortage of liberties) and if white takes black connects and A3 will be a false eye. i came up with white B1 instead of A2, I’m not 100% sure it works but as far as I could see it does.
and the third thing was C1-B1-A3-B2 and then A2, but there would have been a snapback at A6. maybe the correct defense against A3 is to take at A4 (after that A2-B2 or A6-A2).
I’m at about 9kyu on KGS right now so not really strong and it could very well be that i missed some stuff but maybe you want to take a look at it again, the wrong killing moves should actually be wrong ;)
other than that keep it up, i really enjoy all the stuff about GO i can find.
Comment by KW April 7, 2009 @ 07:33The final move is correct though, interesting problem :)
Comment by Bubarik April 5, 2009 @ 11:40And, i think that one must give atari for b2 from the other side, b1. If you atari from a2, black descends to b1 and white dies dut to shortage of liberties :)
Comment by Bubarik April 5, 2009 @ 11:39Well, a3 does not kill, but you cant cut of b1 stone by moving at c3 – thats self atari, just connectin at b2 is enough to live.
Comment by Bubarik April 5, 2009 @ 11:35