This is what has inspired the creator of backgammon and what design has invested in the construction. .... At the core of the game is put the time : That 's a tray - symbolizes the unity of the year. Four corners of the box - a symbol of the four seasons . Opposite 2 x 6 compartments inside the panel - are actually 12 months a year. The sum of all pieces of 30 - as is the average number of days in one month. The color of the pieces - black and white , represent day and night. And opposite 2 x 12 units - are 24 hours a day.