The preparatory problems (theoretical and practical) are now
              available to download on website.

              http://www.icho2010.org:80/en/preparatory.html

             Regulations Regarding ICHO 2010

             1.Proposal for Changes in the IChO Regulations
               (Proposal_Revision Of Regulation_2009_Tokyo.pdf)

             2.Proposed Version of the Regulations of the International Chemistry Olympiad (IChO)
                 (IChO_regulations_Tokyo_ISC_final.pdf)