Question $1$

$100$ Marks there are no other pieces on the board$).$ A move is valid if the plece can move folls within the fol squares of the board, labeled from $\text{'}a\text{'}$ to $\text{'}h\text{'}$ horizontally and $\text{'}1\text{'}$ to $\text{'}8\text{'}$ vertically. A move from $\text{'}a8\text{'}$ to $\text{'}h1\text{'}$ means that the piece intends to move from the upper left corner of the board to the lower right corner.

For the purposes of testing, the order of the horizontal$/$vertical board positions may be transposed $(\text{'}8a\text{'}$ and $\text{'}a8\text{'}$ are equal$),$ and you must perform error checking on the input to ensure it is within the range of the board.

You should handle the following pieces in your implementation, with each piece's implementation being worth $15$ marks: King, Queen, Bishop, Rook $($Castle$),$ Knight $($Horse$)$

Before you begin, think about valuable functions to build. Small parts of the more extensive program that you can extract that you will need for all the pieces. You should have one helper function for each piece $($named as you choose, with parameters of your choosing$),$ and other functions as you see fit.

The final $25$ marks will be allocated to:

checking for proper positions

controlling for alternate inputs $(\text{'}$a$8\text{'}$ vs $\text{'}8$a$\text{'})$

controlling for other incorrect inputs$(\text{'}$a$10\text{'},\text{'}10$aaa', $\text{'}$hhhh$\text{'})$

incorrect input should return False

def is$\_$move$\_$valid$($piece:str$,$ current$\_$location:str$,$ destination:str$)$ bool:

# YOUR IMPLEMENTATION

Examples of the function running should appear as follows:

$>$ is$\_$move$\_$valid$(\text{'}$Queen$\text{'},\text{'}$a$7\text{'},\text{'}$a$1\text{'})$

True

$$ is$\_$move$\_$valid$(\text{'}$queen$\text{'},\text{'}($:$7A^{\text{'}},{?}^{\text{'}}A{1}^{\text{'}}\}$

True

$$ is$\_$move$\_$valid$(\text{'}$king$\text{'},\text{'}$A$7\text{'},\text{'}$C$8\text{'})$

False

$$ is$\_$move$\_$valid$(\text{'}$knight$\text{'},\text{'}$A$7\text{'},\text{'}$C$8\text{'})$

True

$$ is$\_$move$\_$valid$(\text{'}$knight$\text{'},\text{'}$AA$\text{'},\text{'}$C$8\text{'})$ # AA is an invalid position

False

$$ is$\_$move$\_$valid$(\text{'}$knight$\text{'},\text{'}$A$7\text{'},\text{'}$C$9\text{'})$ # c$9$ is an invalid square

False

$$ is$\_$move$\_$valid$(\text{'}$hammer$\text{'},\text{'}$A$7\text{'},\text{'}$A$1\text{'})$ # a hammer is not a piece

False

$3$

$3$