Igo Hatsuyo-ron Problem 38 / Attempts

Diag. 1  

jvt: I believe there is a way to get a ko with . The book FaYangLun, New Solutions by Cheng Xiaoliu does not cover . Instead variations for move at a or b are both shown to fail, the White corner dies.

Diag. 2: follow up from diag. 1  

jvt: Can you improve on that result?

Diag. 3: another continuation from diag. 1  

tderz: here looks good. If white a, then Black b and ....

Diag. 4a: continuation from diag. 3  

tderz: ... White seems to live anyway!

Diag. 4b: continuation from diag. 3  

tderz: ... White seems to live anyway!

Diag. 4c: continuation from diag. 3  

tderz: In the last diagram, Black suffered from a damezumari on (= former in dia. 3).
Changing the order of moves? should do the trick!
If White now plays a, Black can get to (wrong by Black) dia. 5 by transposition. If White b, Black c, Wa, Bd e-f could follow -> dead.
jvt: Not dead, Wa is wrong, Wf instead makes life. See diag 4e.

Diag. 5: another continuation from diag. 3  

tderz: if White answers on the 1st line with ...

Diag. 6: continuation from diag. 5  

tderz: White dies in this variant.

Diag. 4d: continuation from diag. 3  

unkx80: I think can save something. But I don't have anything constructive for now...

Diag. 4d: continuation from diag. 1  

jvt: Yes as in this permutation makes life in the corner. Or White can capture and live as in diag. 4e:

Diag. 4e: continuation from diag. 1  

jvt: White lives by playing in the corner!