Question 22
A robot can move up to 4 squares in one step. A step may not turn a corner. The robot cannot move to or cross any shaded square. For example, in the diagram below, $R$ is the location of the robot at the start. By the rules, the squares marked with an $\times$ would take the robot two steps to reach.
In the diagram below, what is the number of white squares that the robot CAN NOT reach within 3 steps? (Do not include the square containing $R$.)
In the diagram below, what is the number of white squares that the robot CAN NOT reach within 3 steps? (Do not include the square containing $R$.)