Teaching Kids Programming – How to Draw a Chess Board using Python and Turtle Graphics?

Teaching Kids Programming: Videos on Data Structures and Algorithms

logo-chess-board

To draw a black-and-white chess board, we need the following three functions: draw a white square, draw a black (filled) square, and a function to draw the chess board.

We can import the turtle package to be able to draw on the canvas:

from turtle import *

Draw a (Empty White) Square

To draw a square is easy/straightforward:

def square(n):
    for _ in range(4):
        fd(n)
        rt(90)

Draw a (Black Filled) Square

We can draw N squares with size from 1 to n. This is however slow as the turtle needs to draw N squares:

def squareFilled(n):
    for i in range(1, n + 1):
        square(i)

A faster way would be to call the begin_fill and end_fill for turtle to fill the last drawn shape:

def squareFilled(n):
    begin_fill()
    square(n)
    end_fill() 

Draw a Chess Board

Then, we can put these together. First draw a white square, then black square, then repeat 3 more times. And turn opposite to draw the next row.

def chess(n):
    for _ in range(4):
        for _ in range(4):
            square(n)
            fd(n)
            squareFilled(n)
            fd(n)	
        rt(90)
        fd(n*2)
        rt(90)
        for _ in range(4):            
            square(n)
            fd(n)
            squareFilled(n)
            fd(n)
        lt(180)

See pure LOGO code to draw a chess board: Draw a Chess Board using LOGO

–EOF (The Ultimate Computing & Technology Blog) —