## Blocksworld-4ops

*   Origin: See above. Used in the AIPS-2000 competition. Taken from the
    [IPP][6] domain collection.
*   Adaptions: None.
*   Description: Like above, but uses a robot arm that can be used for
    stacking a block onto a block, unstacking a block from a block,
    putting down a block, or picking up a block.
*   Parameters: Number of blocks.
*   Generation: Like above.
