Checkerboard V2 Codehs | 9.1.7

if (row === 0 && col === 0) square.setColor("red"); if (row === 0 && col === 1) square.setColor("black"); // ... 62 more horrendous lines Use the (row + col) % 2 formula. Never hardcode each tile. Mistake #2: Off-by-One Errors Bad Code:

Copy the JavaScript solution above, run it in your CodeHS IDE, and watch the red and black grid appear perfectly. Then, experiment by changing BOARD_SIZE to 800 – and watch how the entire program adapts without any other changes. That is the power of writing flexible, "V2"-quality code. 9.1.7 Checkerboard V2 Codehs

At first glance, it seems simple: draw a checkerboard. However, this problem is a classic exercise in , conditional logic , coordinate math , and efficient rendering . It strips away the fluff of game logic and focuses on the core visual structure of an 8x8 grid. if (row === 0 && col === 0) square

var x = row * 50; // Swapped row and col Remember: x = col * size , y = row * size . The column determines horizontal position (x), the row determines vertical position (y). Mistake #4: Forgetting to Add Objects to the Screen Bad Code: (Creates the square but never calls add(square) ) Mistake #2: Off-by-One Errors Bad Code: Copy the