Arasan Test Suite

The arasan testsuite is a set of 200 chess problems, drawn from a variety of human and computer games. They range in difficulty, but most are non-trivial and some are quite hard.Some positions in this file are "avoid move" positions where there is a bad but superficially tempting move. The testsuite was last modified 6-Aug-2023.

You can download the test positions below:

Some older versions are also available: