9.1.7 Checkerboard V2 Codehs May 2026

Expected 4x4 pattern: R B R B B R B R R B R B B R B R

The goal of Checkerboard V2 is to create a grid-like pattern of "markers" or "beepers" on a canvas of any size. Unlike the first version, V2 often requires the program to be dynamic—meaning it must work whether the grid is 9.1.7 Checkerboard V2 Codehs

. This exercise is a pivotal moment for students learning Java or JavaScript (Karel), as it transitions from simple movement to complex nested loops and conditional logic. The Objective Expected 4x4 pattern: R B R B B

s where the numbers alternate in a checkerboard pattern. The key is to use nested loops modulus operator ) to determine if a specific cell should be a based on its row and column indices. The Core Logic The Objective s where the numbers alternate in

for i in range(height): # Loop through the columns (width) for j in range(width):

def print_board(board): for row in board: print(" ".join([str(x) for x in row])) print_board(board) Use code with caution. Copied to clipboard ✅ Result The final output will be an