Akiyoshi's Illusion Pages - https://news.ycombinator.com/item?id=25785081 - Jan 2021 (17 comments)

Akiyoshi's Illusion Pages - https://news.ycombinator.com/item?id=13793715 - March 2017 (32 comments)

Akiyoshi's illusion pages - https://news.ycombinator.com/item?id=5697783 - May 2013 (15 comments)