Ken'ichiro Takahashi (Takaken) has published version 7.3 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!
You can download the solver from this page: https://computerpuzzle.net/english/sokoban//ver730/index.html
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