Dice dice. The transition from dice to playing cards occurred in China around the Tang dynasty, and coincides with the technological transition from rolls of manuscripts to block printed books. In Japan, dice were used to play a popular game called sugoroku. There are two types of sugoroku. "Ban-sugoroku" is similar to backgammon and dates to the Heian period, while "e-sugoroku" is a racing game. Dice are thrown onto a surface either from the hand or from a container designed for this (such as a dice cup). The face of the die that is uppermost when it comes to rest provides
Hazard (game) chance of 6, he could win £8 (4/5 × £10). For each main the probability of winning can be calculated: In some reports on the rules of the game, the main is determined randomly by tossing the dice until a valid main appears. In this case the overall player disadvantage is 1.84%. If the caster can choose a main, he should always choose 7 (resulting in the lowest disadvantage, with 1.41%). This is the origin of a similar dice game, craps, since if 7 is always chosen the game devolves into craps. The name "hazard" is borrowed from Old French.