This site currently includes about 4,100 olympiad problems and about 1,700 other problems. I have given solutions for about 2,300 Olympiad problems (and almost all the Putnam and AIME problems). My ultimate objective is to include a wide variety of interesting problems of all levels of difficulty. In general, I have no interest in pure bookwork problems.
Apologies to all for my failure to pay much attention to this site over the last few years. I will be making substantial improvements and shifting it to another domain name later this year. However, this domain name will probably remain valid until the end of the year.
International/Regional Olympiad problems
22 June 2005
Last updated/corrected 26 May 07