Yesterday I happened to browse "Life and Death" by James Davies, one of the few books in the Elementary Go Series that I had missed as a beginner. This particularly nice problem caught my attention, and I could not find it on this site, so here you go. The actual setup of the outside stones may have been different in the book, but the idea is the same.
Author Bass Created 2012-01-23
Difficulty 5 kyu (history) Source Davies' Life and Death
AVG solve time 78 sec Stars 4.4  (5 votes)
User attempts 405 / 1256 Collections Corner based, Oki (Placement) Tesuji
Genre life and death Your attempts N/A
Similar problems
Created 2012-01-23
Source Davies' Life and Death
Stars 4.4  (5 votes)
Collections Corner based, Oki (Placement) Tesuji
Your attempts N/A