Introduction - If you have any usage issues, please Google them yourself
In a standard 8 × 8 chess board, the board, some lattice that there may be some obstacles. Cavalier known initial position and target location, your task is to calculate the number of step-by-step Cavalier at least from the initial position to reach the goal. Obstructions on the lattice of course they can not reach. Standard 8 × 8 chess board each lattice can be used only to determine the number. Line with 1 ~ 8 This is followed by eight figures that out with