import turtle

screen = turtle.Screen()
screen.title("Snake")
screen.bgcolor("#4A752C")
screen.setup(500, 500)
screen.tracer(0)

pen = turtle.Turtle()
pen.hideturtle()
pen.penup()
pen.shape("square")

# Draw the green checker board
for row in range(20):
    for col in range(20):
        x = -200 + col * 20
        y = -200 + row * 20
        if (row + col) % 2 == 0:
            pen.color("#AAD751")
        else:
            pen.color("#A2D149")
        pen.goto(x, y)
        pen.stamp()

# A list of (x, y) spots = the snake's body
snake = [(-40, 0), (-20, 0), (0, 0)]

# A separate pen for the snake
snake_pen = turtle.Turtle()
snake_pen.hideturtle()
snake_pen.penup()
snake_pen.shape("square")
snake_pen.color("#4673E8")

# Stamp each part of the snake
for part in snake:
    snake_pen.goto(part)
    snake_pen.stamp()

screen.update()
screen.mainloop()

_{Project 5 — Step 1 of 5}

⭐ Step 1 — Board + snake

➡️ Draw the green checker board and a 3-segment blue snake.

Two new things, but both should feel familiar:

• A nested for loop to fill 20×20 = 400 tiles in a checker pattern (same trick as Project 3’s stars, but in a grid).
• A list of (x, y) spots called snake. Each item is one body part. A for part in snake loop stamps them all.

✏️ What to type

Tap 💡 Solution to see the whole file, then type it in. It’s a lot of code in one step — but you already know every piece.

import turtle

screen = turtle.Screen()
screen.title("Snake")
screen.bgcolor("#4A752C")
screen.setup(500, 500)
screen.tracer(0)

pen = turtle.Turtle()
pen.hideturtle()
pen.penup()
pen.shape("square")

# 1. Draw the green checker board (nested for loops over 20x20)
#    Use "#AAD751" when (row+col) is even, "#A2D149" when odd.

# 2. Make a list called snake = [(-40, 0), (-20, 0), (0, 0)]

# 3. Make a snake_pen (hideturtle, penup, shape "square", color "#4673E8")

# 4. Stamp each part of the snake using a for loop over snake

screen.update()
screen.mainloop()

Tap ▶ Run. You should see the green checkerboard with a static blue snake of 3 squares in the middle. 🐍

🔍 Tip

Why a separate snake_pen? Because next step we’ll need to clear the snake stamps and redraw them in new positions — but keep the board the same. Two pens = we can wipe one without wiping the other.

Next → Step 2

_{⬅ Back to Project 5}