Parent State ID: 0
State Depth: 1
Action Taken: unstack(d, a)
Action Reasoning: The first step is to unstack block d from block a, as this will allow us to start rearranging the blocks to match the goal state.
State Description: Block d is in the hand, block a is clear and on top of block c, block c is on top of block b, and block b is on the table. The hand is holding block d.
Action Path: ['unstack(d, a)']
