ICFP Programming Contest
Ninth annual ICFP Programming Contest (2006)
It was held July 21–24, 2006. Friday 12:00 noon (EDT) -- Monday 12:00 noon (EDT). See a clock showing EDT (Eastern Daylight Time) here (New York).
The announcement (see Lambda the Ultimate or the Haskell Mailing List) said that “this year's task will be very different from past competitions. This year's theme is ‘computational archaeolinguistics’.”
See its official homepage, too: ICFP Programming Contest. The contest task materials are available for download.
Some of the implementations (made by the participants) are also available, browse the discussion mailing list.