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 in general they are harder that some other common-used testsuites such as WAC and ECM. Some positions in this file are "avoid move" positions where there is a bad but superficially tempting move. The testsuite was last modified 21-Jul-2026.

You can download the test positions below:

Some older versions are also available: