. You can do this quickly using a list comprehension: board = [[0] * 8 for _ in range(8)] .
| Mistake | Why It Happens | Fix | |---------|----------------|------| | Colors are offset (e.g., top-left black) | Used (row + col) % 2 === 1 for red | Use === 0 for red | | Board starts red but columns don't alternate | Forgot to add row and col together | Use (row + col) % 2 | | Squares overlap or wrong spacing | Used same x/y for all squares | Multiply by squareSize | | Board is only 4x4 or wrong size | Wrong number of rows/cols | Set numRows = 8 , numCols = 8 | 916 checkerboard v1 codehs fixed
// Handles the transition between rows and pattern alignment resetToNextRow() (facingEast()) : If your specific version requires the second
The resulting 2D list represents a board where rows 0, 1, 2 and 5, 6, 7 are completely filled with 1s, creating the "v1" pattern required for the exercise. 2 and 5
: If your specific version requires the second row to start with a gap, add a check in resetToNextRow
Before looking at the fix, check if you fell into these common traps:
The 916 Checkerboard V1 problem on CodeHS is a popular challenge that requires students to create a checkerboard pattern using code. Here is a fixed solution to the problem: