We introduce the defect system. Depending on which range of sold boards we are in, the boards will be affected by aesthetic or visual effects only. What does this mean? We want to reward the first board buyers in the DChess world, therefore, we want to make this noticeable in a future available marketplace. A board purchased in pre-sale will have an special value for having a unique detail, visual or sound effect than a board of the same rarity that was purchased in a later sale.