Traffic Jam· Advanced

Goal

Move the red car (★) to the right exit.

Rules

  • Vehicles can only slide in their direction (horizontal or vertical).
  • Vehicles cannot pass through or push other vehicles.
  • Solve in fewer moves for a higher score.
  • Clear vehicles near the exit first — think backwards from the goal.
  • Trucks (3 cells) are key obstacles. Identify them first.
  • Use undo freely. Trying multiple paths is the key strategy.

Sliding block puzzles are classified as NP-hard problems, strongly activating sequential planning and prefrontal executive function.

  • Flake, G. & Baum, E. (2002). "Rush Hour is PSPACE-complete." Technical Report, NEC Research.
  • Unterrainer, J. M. et al. (2004). "Planning abilities and the Tower of London." Neuropsychologia, 42(10), 1390-1397.