Question 3
A rabbit must reach the carrot without entering a rock cell or visiting any cell more than once. How many different routes are possible?
Reading convention: each step goes to an edge-adjacent cell, horizontally or vertically, never diagonally. This usual grid convention is made explicit here.
Reading convention: each step goes to an edge-adjacent cell, horizontally or vertically, never diagonally. This usual grid convention is made explicit here.