This game really need an Undo button.
Author said: "If you accidentally pick up a coin, you can place it back where it was for no move penalty."
But this is wrong: move one coin + put it back = 2 moves. Also moving back may not always be possible because sometimes the coin initial place do not respect the rules.
I maybe phrased it poorly! If you take a coin and put it down in a new position, you are correct that you cannot always place it back and it will count as 2 moves. If you pick up a coin and place it back down in the same position, it will not count as a move.
Great game. But difficult to find all 10 coins over the 4 places.
Suggestion: the hints should give the remaining number of coins for each room instead of the total number.
We've just fixed this, thank you for notifying us!