Codehs Fixed __hot__ — 916 Checkerboard V1

This report includes the Problem Statement, Algorithm Analysis, the Corrected Code Solution, and a detailed Code Breakdown to ensure the "fixed" requirements are met (specifically addressing the common issue where the code runs infinitely or crashes due to missing decrement logic).

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Why This Works

The expression (row + col) % 2:

• Row 0, Col 0 → 0 % 2 = 0 (even → red)
• Row 0, Col 1 → 1 % 2 = 1 (odd → black)
• Row 1, Col 0 → 1 % 2 = 1 (black)
• Row 1, Col 1 → 2 % 2 = 0 (red)

This creates the alternating pattern automatically. 916 checkerboard v1 codehs fixed

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Common errors & fixes:

1. Not alternating correctly
   Use (row + col) % 2 === 0 to determine color.

2. Square size / positioning wrong
   If canvas is 400×400, each square = 50×50. This report includes the Problem Statement , Algorithm

3. Off-by-one in loops
   Ensure you loop rows 0–7 and columns 0–7.

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Common Mistakes (And Fixes)

| 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 | Why This Works The expression (row + col) % 2 :

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916 Checkerboard v1 Codehs Fixed

The 916 Checkerboard problem on CodeHS is a classic challenge that requires creating a checkerboard pattern using a loop. Here is a fixed and well-documented solution: