Parent State ID: 6
State Depth: 4
Action Taken: stack(d, b)
Action Reasoning: To progress towards the goal state, we need to free the hand by placing block d on block b, which is clear and on the table. This sets up the foundation for stacking the other blocks in the correct order.
State Description: The hand is empty. Block a is on the table and clear. Block b is on the table with block d on top of it. Block c is on the table and clear. Block d is on block b and is clear.
Action Path: ['unstack(c, d)', 'put-down(c)', 'unstack(d, a)', 'stack(d, b)']
