Confluence Competition

CoCo 2021


27 February 2021   1st call for tools and problems
27 February 2021   panel members announced
22 December 2020   web site created


This site lists relevant information for the 10th Confluence Competition. CoCo 2021 will run live during IWC 2021, the 10th International Workshop on Confluence, which is held virtually on July 23 as part of FSCD.


problem submission 10 June 2021
tool registration and description   15 June 2021
tool submission 5 July 2021
secret problem submission   10 July 2021
competition 23 July 2021


All categories of CoCo 2019 will run in 2021. Requests for further categories have to be made by email to the CoCo SC before April 30, 2021.

Problem Submission

Problems submitted before June 10, 2021 (via the COPS web interface) will be considered for CoCo 2021.


CoCo 2021 is overseen by a panel of knowledgeable experts who are not participating in the competition: