Five identical coins are arranged into the Olympic Rings’ shape. Two coins are heads up (light). Three coins are tails up (dark).
Reach the Goal position, performing a minimal number of single-coin moves. A single-coin move consists of sliding a coin to a new position where it must touch at least two other coins. What are the two final moves in the solution sequence?
The solution requires 8 moves with the final two of them moving the tails up (dark) coins.