Parent State ID: 37
State Depth: 8
Action Taken: stack(b, c)
Action Reasoning: The goal is to place block 'b' on top of block 'c', which is clear and on the table. The best action is to stack 'b' on 'c' to achieve the goal state.
State Description: Block 'a' is on top of block 'd', block 'b' is on top of block 'c', and both 'a' and 'b' are clear. Block 'c' is supporting block 'b' and is on the table. Block 'd' is supporting block 'a' and is on the table. The hand is empty.
Action Path: ['unstack(d, a)', 'put-down(d)', 'unstack(c, b)', 'put-down(c)', 'pick-up(a)', 'stack(a, d)', 'pick-up(b)', 'stack(b, c)']
