/* @pjs preload="themes/gray/black_bishop.png";
        preload="themes/gray/black_horse.png";
        preload="themes/gray/black_king.png"; */

PImage black_bishop = loadImage("themes/gray/black_bishop.png");
PImage black_horse = loadImage("themes/gray/black_horse.png");
PImage black_king = loadImage("themes/gray/black_king.png");