Important Dates

  • August 01, 2010: The challenge begins. Registration start.
  • August 12, 2010: The challenge's launch presentation. PATAT 2010, Belfast, Northern Ireland.
  • May 15, 2011: Registration deadline.
  • June 07, 2011: Leaderboard submissions deadline.
  • June 15, 2011: Deadline (at 23:59h UK time) for submitting the final documents.
  • July 5, 2011: The competition results are announced online.
  • July 29, 2011:  Competitors OR53 registration deadline.
  • September 8, 2011:  Announcement of the results. Presentation of the finalists' algorithms. The winners will be announced at OR53 (UK Operational Research Society conference). 
  • September 9, 2011:  Information about the winners is now published.


  • CHeSC 2011 benchmark: The file ( contains the program and results for calculating the CHeSC 2011 competition scores, and comparing new hyper-heuristics to these results (26/09/11).
  • Competition winners:  Are now available online (09/09/11).
  • Competition median and best results: Are now available online (05/08/11).
  • Competition results: Are now available online (06/07/11). The indentity of the top 3 entires will be announced at OR53 (UK Operational Research Society) conference, a multi-disciplinary conference, with a wide variety of streams. See OR53 registration.
  • Competition instances:  The program used for selecting the competition instances is now available (05/07/11) (
  • Leaderboard: Last update 09/06/11. The Leaderboard submissions are now closed. As a reference, the current top 3 leaderboard entries: PHunter4, ISEA2 and HAHA1, score above 340.00 points when competing (separately) against the 8 ASAP default hyper-heuristics using the or programs.
  • Prizes: The current prize fund is £ 3,000  to be split between the first (£ 1,500), second (£ 1,000) and third (£ 500) place competitors.   The top three competitors will be waived from the registration fee, and the accommodation fee. 

Software Updates

If you have any queries or comments regarding the competition please contact us.

Last Updated: 26 September 2011 by Gabriela Ochoa.