Ken'ichiro Takahashi (Takaken) has published version 7.3.1 of his great Sokoban solver.
The program requires a 64-bit version of Windows and at least 4 GB RAM.
This version can solve all 90 XSokoban levels!
Release notes for this version:
- Previous versions sometimes reported unnecessarily long solutions where the level was solved but the solution continued until the level was solved a second time.
- This new version has no solution size limit anymore (previous version 150000 moves).
You can download the solver from this page: https://computerpuzzle.net/english/sokoban/ver731/index.html