# File:    checkers.py
# Author:  Dr. Gibson
# Date:    3/8/2018
# Section: N/A
# E-mail:  k.gibson@umbc.edu
# Description:
#    Generate a 2-dimensional list for checkers

BLACK = "."
RED   = "O"

BOARD_SIZE  = 8

def main():

    ######################
    # CREATING THE BOARD #
    ######################

    # start off with an empty board
    board = []

    # for each row we want to create
    for i in range(BOARD_SIZE):
        
        row = []
        start = i  # odd rows start with BLACK, even starts with RED

        # for each column in that row
        for j in range(BOARD_SIZE):
            if start % 2 == 0:
                row.append(RED)
            else:
                row.append(BLACK)
            # increment start to do the next square in the row
            start += 1

        board.append(row)

    ##########################
    # PRINTING OFF THE BOARD #
    ##########################

    for i in range(len(board)):
        for j in range(len(board[i])):
            print(board[i][j], end = " ")

        print()   # end the printed row with newline

main()