Dear friends!
Welcome to the site of competition Construct-Test-Explore, where you can prove youself, compete with children from other countries and derive pleasure from solving challenging problems!
CTE became international this year and we will be glad if you tell your friends about our website, in that case the Competition will be even more interesting!
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There are problems of two competitions (first competition CTE-2004 and last year competition CTE-2009) in English on the website that can be used for training. There is an article with detailed commentaries on some problems too. Participants who speak Russian can find the latest competitions on the Russian page of the site where problems with more interesting and picturesque interface are represented.
To find out how to become a participant and pay a registration fee go to section Rules where you can find detailed information and useful advice.
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There is a set of region representatives in Russia who help to hold the Competition and we will be glad to establish contacts with foreign organizations that are interested in the competition holding in their country.