9.1.6 Checkerboard V1 Codehs Jun 2026

Beepers should be placed in a checkerboard pattern (

Defining NUM_ROWS and NUM_COLS at the top of your script is a programming best practice. If you later want to change your checkerboard into a

This article provides a comprehensive guide to solving the problem, aimed at students working through Karel the Dog's fundamental coding concepts. 9.1.6 checkerboard v1 codehs

// Loop through rows while (leftIsClear()

if (row + col) % 2 == 0: evaluates the grid position. For example: Row 0, Col 0: →right arrow Row 0, Col 1: →right arrow Row 1, Col 0: →right arrow Beepers should be placed in a checkerboard pattern

B . B . B . B . B . B . B . B . B . B . B . B . B

Karel starts at (1, 1), facing East, with an infinite bag of beepers. For example: Row 0, Col 0: →right arrow

def print_board(board): for row in board: print(" ".join([str(x) for x in row])) # 1. Create an 8x8 board of 0s board = [] for i in range(8): board.append([0] * 8) # 2. Assign 1s to the top 3 and bottom 3 rows for i in range(8): for j in range(8): if i < 3 or i > 4: board[i][j] = 1 # 3. Output the result print_board(board) Use code with caution. Copied to clipboard