The stone bridge
Get everyone across with the smallest total time.
Your notebook · Rules, controls and method
Before you begin
These travellers need 1, 3, 6, 8 minutes to cross. The torch accompanies every crossing, including returns.
One or two people cross. A pair takes as long as its slower member. Nobody crosses without the torch.
How to play
Select people on the torch bank and press Cross. Every move can be undone.
Ask for a hint, a reframe or an explained plan. Viewing a plan does not unlock the next level: apply it on the board first.
Preparing the board…