GokyoShumyoSection3Problem65/Solution

Author's mistake  

This is the original version. lives unconditionally.

Modified version  

So Honinbo Shusai modified the diagram to the position after here in his edition of Hatsuyoron. Then....

Main Line: Ko  

! is the point, Black can't catch this stone without making the resulting eye false. is forced.

Wrong Order  

This is a mistaken order of play; stone help catch the White stone on the first line.

Easier  

is met by , threatening to connect to either side. is forced.