Chessboard:

The chessboard is an 8 x 8 grid with 64 cells in it. With 8 rows (A, B, C…. H) and 8 columns (1, 2, 3…. 8), each cell can be uniquely identified with its cell number. This can be seen illustrated below.

Chess pieces and their movements:

The game of chess has 6 unique types of pieces, with their own unique types of movements. These are:

1.) King – Can move only 1 step at a time in all 8 directions (horizontal, vertical and diagonal)

2.) Queen – Can move across the board in all 8 directions

3.) Bishop – Can move across the board only diagonally

4.) Horse – Can move across the board only in 2.5 steps (2 vertical steps and 1 horizontal step)

5.) Rook – Can move across the board only vertically and horizontally

6.) Pawn – Can move only 1 step at a time, in the forward direction, vertically. Can also move 1 step forward diagonally, in order to eliminate an opposing

Possible Inputs and Outputs:

Input – The input string to your program will be the Type of chess piece and its Position (cell number) on the chessboard. E.g. “King D5”
Output – Once you execute the program, the output will be a string of all possible cells in which the chess piece can move.

Usage:

1. To get the pawn movement.

   $pawn = new Pawn();

   $pawn->GetMoves("D5");

2. To get the bishop movement.

   $bishop = new Bishop();

   $bishop->GetMoves("D5");

In this way you can get the possible moves of each pieces. Just you need to call the appropriate class and call GetMoves method of that clas.

Enjoy.

Anam Shah