9.1.6 Checkerboard V1 Codehs May 2026

CodeHS exercise 9.1.6 (v1) requires creating an 8x8 2D list and using nested loops with assignment statements to place pieces (1s) in the top three (rows 0-2) and bottom three (rows 5-7) rows. The solution involves initializing a grid of zeros, applying conditional logic to update specific elements, and printing the formatted grid. For a detailed breakdown of the solution, refer to the discussion on Reddit [Link: Reddit user thread https://www.reddit.com/r/codehs/comments/kt28qe/916_checkerboard_v1_answers_needed_what_am_i/].

• Integer n ≥ 0 (board dimension).
• Two distinct tokens a and b (characters/strings) representing alternating squares; defaults: a = "X", b = " " (space).

Report: CodeHS 9.1.6 Checkerboard v1

# Call the function to display the board create_checkerboard() 9.1.6 checkerboard v1 codehs

look at the sum of the row index and column index.

The challenge is deciding when to use gray and when to use black. There is a simple mathematical trick: CodeHS exercise 9

8. Conclusion

• The core logic is (row + col) % 2 == 0.
• The % operator returns the remainder of division.
• If you divide a number by 2 and the remainder is 0, the number is even. If it is 1, the number is odd.