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Problems

On this page I maintain archives of problems from various contests I enjoy. Note that this is not an official repository of problems and solutions, nor do I own the copyright for any of the problems. In fact, many of the files are replicas of the originals produced by me. However, because all these problems and solutions can be found on the Art of Problem Solving anyways, I have assembled a subset of them here for everyone's convenience.

Taiwan Team Selection Test

These problems are in Chinese. Click here for English versions of the TST problems.

ELMO

USA TST Selection Test (TSTST)

For an explanation of the name, see the FAQ on the USA IMO team selection.

USA Team Selection Test (TST)

USA National Olympiad

Links to other contests

National olympiads I often work on include USA, Canada, Brazil, Russia, Korea.
Team selection tests I enjoy include USA, Vietnam, Romania, Iran, and Taiwan.

Last modified: Thu Mar 23 22:59:45 2017