115WS Notcher
Keywords: Life & Death
White makes ko.
emeraldemon: It seems to me that this is a 2 step ko for black:
symplicity: Actually, this is just an ordinary ko where white has a local ko threat. Whoever wins the ko only has to ignore one move by the opponent elsewhere, just as in a regular ko. In a two-step ko, for player for which the ko is two-step would have to ignore *two* moves elsewhere in order to win the ko.
emeraldemon: Thanks, I had my terms confused. Actually, it looks like white has two local threats.
The term, two step ko, is ambiguous. Best to avoid it.
![[Diagram]](../../diagrams/49/5bebbcae761627e00e34216c2c370412.png)
![[Diagram]](../../diagrams/5/8e605a1059252153845e5b32c3b9c4d1.png)
![[Diagram]](../../diagrams/51/e7ced551a78ac07eea138126a7707765.png)
![[Diagram]](../../diagrams/39/52e1defac4fd3d6dbc69b961b50560ab.png)
![[Diagram]](../../diagrams/29/30b4fd541a5d110f4213cdbb7b43b950.png)
![[Diagram]](../../diagrams/6/f95b307a25e6d6c83b89567efe69e89f.png)
![[Diagram]](../../diagrams/32/0d93be93fbfd7b24a8320f1329d228cb.png)
2024 the Authors,
published under the ![Sensei's Library [Welcome to Sensei's Library!]](../../images/stone-hello.png)