9.1.7 Checkerboard V2 Answers |top| Jun 2026
for _ in range(3): my_grid.append([1] * 8)
def print_board(board): for row in board: # Converts each element to a string and joins them with a space print(" ".join([str(x) for x in row])) # 1. Initialize an empty 8x8 grid with all zeros my_grid = [] for i in range(8): my_grid.append([0] * 8) # 2. Use nested for loops to fill the checkerboard pattern for row in range(8): for col in range(8): # If the sum of indices is even, set the element to 1 if (row + col) % 2 == 0: my_grid[row][col] = 1 # 3. Display the final board print_board(my_grid) Use code with caution. Copied to clipboard Key Components
Build upon this exercise to create a simple checkers game where users can place pieces on the board.
Cell at row r , column c is if (r + c) % 2 == 0 , otherwise white (or vice versa). 9.1.7 checkerboard v2 answers
Do you need help with the version or a different CodeHS module?
Some versions of 9.1.7 explicitly require the use of ArrayList instead of a primitive 2D array. Here is that solution:
Ensure your square color is being reset inside the loop so it can change with every iteration. Summary for 9.1.7 for _ in range(3): my_grid
L3Switch(config)# ip routing L3Switch(config)# interface vlan 10 L3Switch(config-if)# ip address 192.168.10.1 255.255.255.0 Use code with caution. Step 5: Dynamic Routing (OSPFv2 or EIGRP)
"It’s a coordinate problem," Maya corrected gently. "Think of a coordinate plane. You have an X and a Y. The color of a square depends on the sum of its coordinates."
private static final int ROWS = 8; private static final int COLS = 8; private static final int SQUARE_SIZE = 50; Display the final board print_board(my_grid) Use code with
If you're working your way through the course, you've likely encountered the 9.1.7 Checkerboard, v2 assignment. This exercise is a cornerstone for solidifying your understanding of 2D lists, a fundamental concept in programming. But what exactly is the goal, and how do you solve it correctly?
public class CheckerboardV2 extends GraphicsProgram {
