createCanvas(400, 400);

​

}

​

function draw() {

  background(220);

  let tileSize = width/7; 

​

  for (let i = 0; i < width; i += tileSize) {

    for (let j = 0; j < height; j += tileSize) {

      if ((i / tileSize + j / tileSize) % 2 == 0) {

        fill(random(0,60)); // Black squares

      } else {

        fill(random(160,255)); // White squares

      }

      rect(i, j, tileSize, tileSize);

    }

  }

}