First up, let’s get on the same page. Our Green Board is the equivalent of a regular 12x12x1 standard wood board.
If you cut that in half, you’d have 12x6x1, approximately half the difficulty of a full-size standard wood board.
If you cut that in half, you’d have a 12x3x1 strip of wood, approximately a quarter difficulty.
WHITE BOARD = ¼ of a wood board
YELLOW BOARD = ½ of a wood board
ORANGE BOARD = ¾ of a wood board
GREEN BOARD = 1 wood board
BLUE BOARD = 1 ½ wood boards
BROWN BOARD = 2 wood boards
BLACK BOARD = 2 ½ wood boards