Sometimes students write a complex condition like ((row % 2 == 0 && col % 2 == 0) || (row % 2 != 0 && col % 2 != 0)) . This is logically correct but verbose and error-prone. Stick with (row + col) % 2 .
(even vs. odd). By tracking the current row number and column number, the program can decide whether to place a marker based on the following rule: If the sum of the (Row + Column) is , place a beeper. If the sum is , leave the space empty. 9.1.7 Checkerboard V2 Codehs
The subtle part is the .
function start() // Set up the canvas var board = new Rectangle(BOARD_SIZE, BOARD_SIZE); board.setPosition(0, 0); board.setColor("white"); add(board); Sometimes students write a complex condition like ((row