Festival is a Sokoban solver written by Yaron Shoham.
It is based on the novel FESS search algorithm.
Festival is the first Sokoban solver that solves all 90 levels of the XSokoban benchmark!
See how Festival scores in other level sets in the solvers statistics wiki page.
You can download the solver from the Festival website.
The download also contains a file to install the solver into Sokoban YASC. For more information please visit the Festival website.
Thanks Yaron, for this fantastic Sokoban solver!