Deletion of Sudokuthon

Comment: per nom - there's a news article about it https://metro.co.uk/2006/10/10/nas-sudokuthon-solution-for-tuesday-261754/ but it looks like it was only for 2006. The Wikipedia article was created around the same time and it looks like it was unknown if this was going to be a yearly event. However,  shows us it was only for 2006 and fails notability
Stance: delete
Cited policy: Wikipedia:Notability (WP:SUSTAINED)

Comment: No references in the article and my basic BEFORE (Google News, newspapers.com, JSTOR) fails to find even a single mention, let alone significant coverage. Indeed, even the official website is broken so it's difficult to prove this exists, let alone passes 
Stance: delete
Cited policy: Wikipedia:Notability (WP:GNG)