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Lucky's Problem Solution 1
   

[Diagram]
Diag.: White to play and capture two stones.

DaveSigaty: W1 loosely surrounds the two B stones. The marked stone is in just the right place to prevent B from pushing out along the right side.


[Diagram]
Diag.: Black tries to escape 1

If B1, W plays 2 and squeezes B. W10 completes a nice symmetrical shape.


[Diagram]
Diag.: Black tries to escape 2

If B1, the standard reply at 2 stops B cold.


[Diagram]
Diag.: Black tries to escape 3

This B1 seems the most interesting but it looks like the combination of 2 and 4 prevent B from getting away. If B continues at 5, W throws in at 6 and catches B short of liberties after 10.


[Diagram]
Diag.: Black tries to escape 3

Oops! This idea would work if B cooperates. However, B7 instead puts W on the spot. Capturing at "a" and escaping at "b" are miai for saving the stones.


[Diagram]
Diag.: Black tries to escape 3

W has to be more careful and connect at 6 against 5. Now B is again short of liberties after 10. If next B at "a", W plays "b".


[Diagram]
Diag.: Black tries to escape 3

If B cuts at this 5 instead, W plays atari at 6. If B captures, the throw in at 8 recreates the shortage of liberties. If B connects at 8 instead of 7, W simply connects at 7.



Lucky

[Diagram]
Diag.: White can also connect

Actually white can also connect at 6 in the diagram before.


[Diagram]
Diag.: First theme

When I composed this problem I wanted to get a position where the marked stone works but the usual geta doesn't. It was designed for low kyu players at the club.


[Diagram]
Diag.: Great move

But I was very happy with move no. 4. This makes it quite a difficult problem to get in your head.


[Diagram]
Diag.: Hmm

I think I have yet to work with this position because white 1 is still good and it should be bad :)


[Diagram]
Diag.: Hmm 2

This result is better for white though he doesn't capture two stones.


[Diagram]
Diag.: No good

And no, it's no good to move the marked black stone one line to the right.



[Diagram]
Diag.: Suggestion

unkx80: How about changing the problem to this one? As far as I can see, this problem should work too, although the difficulty is increased a bit.

Lucky: This seems to work too :) And resolves the previous problem. Why do you think is more difficult this position?


[Diagram]
Diag.: Variation

unkx80: In this variation, I think white 5 is the only move here, which may be a kind of a blind spot.

Lucky: Well, I didn't check this variation :) I agree it might be a blindspot.


[Diagram]
Diag.: Variation

Compared to the original problem, white 9 must be played here instead, I believe. Playing at a turns it into a ko.

You may think otherwise about the difficulty? I don't know. =)

Lucky: True, I first found the ko and I was ready to conclude this variation doesn't work.

I don't know how problems can be rated. As all amateurs I know some positions (which therefore I find easy) and I don't know a lot others (which I find difficult). I may resolve a pro level problem if I saw it before and go wrong with an ama 5 kyu problem.



This is a copy of the living page "Lucky's Problem Solution 1" at Sensei's Library.
(C) the Authors, published under the OpenContent License V1.0.