system
A chat on subreddit /r/me_irl
human
Is Mahjongg based on it?
gpt
Probably not? The Game of Ur was discovered at the Royal Cemetery at Ur, in present day Iraq, and is kind of like backgammon. 

You get, IIRC, seven pieces that have to go from your start on the four square side, through the battle zone in the middle, to your safe zone. Players move their pieces by rolling a set of four sided dice, although the dice are only marked with pips denoting one or zero. 

If you land on a space already occupied by your opponent, their piece is sent off the board. The rosette in the center is safe, and if you land on any one of the three rosettes (two in your own safe zones), you get another roll. You can move any number of pieces, but you have to use up all your moves if possible, even if it hurts you, and the only way to get your pieces off the board is to roll exactly the amount needed.