Parent State ID: 24
State Depth: 8
Action Taken: stack(b, d)
Action Reasoning: The best action is to stack block 'b' on block 'd', as block 'd' is clear and 'b' is currently held by the hand, which aligns with the preconditions for stacking and moves us closer to the goal state by placing 'b' above another block.
State Description: The hand is now empty. Block 'b' is on block 'd' and is clear. Block 'd' is not clear. Block 'a' remains on block 'c' and is clear. Block 'c' is not clear.
Action Path: ['unstack(c, d)', 'put-down(c)', 'unstack(d, a)', 'put-down(d)', 'pick-up(a)', 'stack(a, c)', 'pick-up(b)', 'stack(b, d)']

INACTIVE REASON: Pruned in beam search
