RTG Problem 67 / Solution
Problem 1
Status: Black can obtain a two-stage ko for life.
![[Diagram]](../../diagrams/26/c331daca6ee9f89225e1b35ca71e3766.png)
Solution
Notice that Black a is sente. This allows the sequence from
onwards.
![[Diagram]](../../diagrams/14/cecc4143e77c099ba9e6a876adfaf678.png)
Variation
White cannot avoid the ko with
and
.
catches the White stones in a connect-and-die.
Problem 2
Status: Black is unconditionally dead.
![[Diagram]](../../diagrams/7/dc21de74cdc52265ece6847b5f5de0a3.png)
Solution
The tesuji of
prevents Black from making a ko.