9.1.7 Checkerboard V2 Codehs -

: Use an outer loop to move down the rows and an inner loop to place squares across the columns.

Row 0: B W B W B W B W Row 1: W B W B W B W B Row 2: B W B W B W B W …

: This is the most efficient way to determine if a row or column index is even or odd. For a checkerboard, a cell (row, col) usually contains a 1 if the sum of its indices (row + col) is even, and a 0 otherwise. 9.1.7 Checkerboard V2 Codehs

To start, we need to create an 8x8 grid. We can do this using a nested loop structure. The outer loop will iterate over the rows, while the inner loop will iterate over the columns.

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Before coding, it's crucial to understand the pattern you need to create. For a standard 8x8 board, the pattern of the first few rows looks like this:

Exercise on CodeHS is much more than just printing a pattern. It's a fantastic way to master fundamental programming concepts like working with 2D lists, string formatting, and algorithmic thinking. By understanding the logic behind the alternating pattern and how to manipulate grids, you're building essential skills that will serve you well in countless other programming challenges. To start, we need to create an 8x8 grid

: Change specific zeros to ones based on your condition (e.g., if (row + col) % 2 == 0 ).

This approach is fine for an 8x8 board, but what if you needed a 12x12 board? That's a lot of repetitive code. A better, more professional approach is to write a function that can build a checkerboard of any size.

Ensure you're actually using an if statement to check positions 1.2.4.

Even with the logic correct, many students fail the autograder on 9.1.7 Checkerboard V2 . Here is why: