Puzzle Of The Week

Puzzle of the Week is a free international puzzle competition for schools.

Students submit answers to a puzzle which is published weekly on Mondays. School and student performances are recorded and leaderboards are published on the results page. You can sign your school up for free on the ‘About Puzzle of the Week’ page.

http://www.puzzleoftheweek.com/

Link: www.puzzleoftheweek.com