Finally, you must print the board to match the CodeHS output requirements. 4. The Final Code: 9.1.6 Checkerboard V1
This pattern creates a perfect checkerboard.
function printBoard(board) for (let i = 0; i < board.length; i++) console.log(board[i].join(" "));
Using getWidth() / NUM_COLS ensures that the checkerboard perfectly stretches to fit the screen width, regardless of the device resolution. 2. The Logic Behind the Color Alternation The core mathematical trick lies in this line: javascript if ((r + c) % 2 === 0) Use code with caution.
Here is a step-by-step strategy to build your checkerboard, complete with code snippets and explanations.
Crucial step: The if (frontIsClear()) move(); inside the loop handles the spacing. putBeeper(); is used to create the alternating effect. repositionToNextRow() Function This function manages the "checkerboard" aspect. It checks which way Karel is facing.
print_board(board)
One of the most elegant ways to solve this is by using and the modulo operator ( % ) , which is perfect for creating an alternating pattern. Here is a complete, ready-to-run solution:
for row in range(8): if row < 3 or row > 4: # Use list multiplication to create a row of eight 1s current_row = [1] * 8 else: # Use list multiplication to create a row of eight 0s current_row = [0] * 8 board.append(current_row)
9.1.6 Checkerboard V1 Codehs Jun 2026
Finally, you must print the board to match the CodeHS output requirements. 4. The Final Code: 9.1.6 Checkerboard V1
This pattern creates a perfect checkerboard.
function printBoard(board) for (let i = 0; i < board.length; i++) console.log(board[i].join(" ")); 9.1.6 checkerboard v1 codehs
Using getWidth() / NUM_COLS ensures that the checkerboard perfectly stretches to fit the screen width, regardless of the device resolution. 2. The Logic Behind the Color Alternation The core mathematical trick lies in this line: javascript if ((r + c) % 2 === 0) Use code with caution.
Here is a step-by-step strategy to build your checkerboard, complete with code snippets and explanations. Finally, you must print the board to match
Crucial step: The if (frontIsClear()) move(); inside the loop handles the spacing. putBeeper(); is used to create the alternating effect. repositionToNextRow() Function This function manages the "checkerboard" aspect. It checks which way Karel is facing.
print_board(board)
One of the most elegant ways to solve this is by using and the modulo operator ( % ) , which is perfect for creating an alternating pattern. Here is a complete, ready-to-run solution:
for row in range(8): if row < 3 or row > 4: # Use list multiplication to create a row of eight 1s current_row = [1] * 8 else: # Use list multiplication to create a row of eight 0s current_row = [0] * 8 board.append(current_row) function printBoard(board) for (let i = 0; i < board