# Solution 1

Main Solution

is the key move that aims at the cut at a and effectively stops from escaping.

At any time, White can make the exchange of x/y or y/x , but the rest of the solution stays the same.

We will take a look at White's responses a, b , and c.

### Resistance 'a'

After , White can't get both x and y.

### Resistance 'b'

After , White can't get both x and y.

In fact, at y would probably be better, but this diagram also explains the variation when Black plays before .

### Resistance 'c'

After , White can't get both x and y.

Herman Hiddema: What if white plays at z, making x ko and defending the cutting point y at the same time?

char: I am not sure =p.

char: Maybe this..? Although I don't really like it because it depends on escaping.

Herman Hiddema: Black can't even escape I think. Difficult problem :-)
char: I will take a look at it again tomorrow after I get some sleep. In the mean time, if you are sure that this doesn't work, feel free to change the solution.

Another Solution

char: Does that meant this doesn't work either?

Herman Hiddema: I think so. I've thought long and hard about it, but I haven't found a good reply to this (or to in the other variant)

# Solution 2

Another Solution

Black can switch the order of play by starting with .

# Failure

Compare with Resistance 'a', here doens't stop from escaping.

is the same for at x.

Starting with or x is a good way to kill one's own group in gote.

Xuanxuan Qijing Problem 341 / Attempts last edited by Unkx80 on July 5, 2008 - 21:48
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