Parent State ID: 14
State Depth: 6
Action Taken: stack(d, c)
Action Reasoning: To achieve the goal state, we need to place block 'd' on block 'c'. Since the hand is currently holding block 'd' and block 'c' is clear, the best action is to stack 'd' on 'c'.
State Description: Block 'a' is on the table and clear. Block 'c' is on top of block 'b' and is now supporting block 'd'. Block 'b' is on the table. Block 'd' is on top of block 'c' and is clear. The hand is empty.
Action Path: ['unstack(d, a)', 'put-down(d)', 'unstack(a, c)', 'put-down(a)', 'pick-up(d)', 'stack(d, c)']
