916 Checkerboard V1 — Codehs Fixed

Debugging CodeHS 9.1.6 Checkerboard v1: The Complete Fix Guide

If the sum is an , leave it empty (or place an alternate color). 916 checkerboard v1 codehs fixed

Your primary helper function needs to handle moving across a row while dropping balls every second space. javascript Debugging CodeHS 9

Debugging a grid-based graphics program is a rite of passage for many computer science students. In the CodeHS JavaScript track, Exercise 9.1.6 "Checkerboard v1" frequently challenges students because of specific off-by-one errors and loop logic bugs. In the CodeHS JavaScript track, Exercise 9

Using a simple boolean toggle (like isRed = !isRed ) at the end of the inner loop causes an error at the start of every new row. Because a standard checkerboard has an even number of columns, the last square of Row 1 and the first square of Row 2 end up being the exact same color, creating solid vertical stripes instead of a checkered pattern. 3. Loop Boundary Errors

, you aren't alone. This exercise is a classic "gotcha" because it doesn't just want the right visual output; it wants you to use specific programming techniques—like nested loops and list indexing—to get there.

To ensure the checkerboard actually alternates between rows, look at where Karel ends a row.