{
  "rows" : 3,
  "cols" : 4,
  "board" : "board12.png",
  "piece1" : "blue.png",
  "piece2" : "yellow.png",
  "ladders" : [
    { "posn" : 2, "forward" : 4 },
    { "posn" : 7, "forward" : 2 },
    { "posn" : 11, "forward" : -6 }
  ]
}