Rail mounted container gantry crane is very popular container stack crane, and more and more port and railway stack choose this crane.

The system builds firstly the objective state of the container stack on the principle and then searches for the steps of turning box using the non-conventional breadth-first search algorithm.

Because Lotus Expeditor contains its own Web container and Web service provider stack, the server portion of the sample is hosted on Lotus Expeditor along with the client.