916 Checkerboard V1 Codehs Fixed Jun 2026

Many students try to use (i + j) % 2 to create a "true" alternating checkerboard pattern. While that is how real checkers look, specifically asks for solid blocks of 1s at the top and bottom with a gap in the middle.

Before writing any code, it is crucial to understand the goal. The objective of the 9.1.6 Checkerboard, v1 assignment is to use two‑dimensional (2D) lists to create the initial setup of a checkerboard.

Python (CodeHS default)

In the AP Computer Science A (Java) curriculum, this exercise usually requires you to populate a 2D array of booleans or integers representing a checkerboard. The Problem

: The program alternates between placing a "Ball-first" row and a "Blank-first" row. 916 checkerboard v1 codehs fixed

Running this code will produce a standard 8x8 checkerboard pattern with alternating black and white squares.

If the sum is an , leave it empty (or place an alternate color). Many students try to use (i + j)

function start() while(frontIsClear()) paintRow(); if(frontIsClear()) moveToNextRow();

Getting stuck on this exercise is incredibly common. A single misplaced index or a misunderstood loop boundary can easily break your grid. This guide breaks down the logic, provides a clean and fixed solution, and explains exactly how the code works. Understanding the Checkerboard Logic The objective of the 9

# 916 Checkerboard v1 - Fixed Solution