7 Sided Dice
7-sided Dice from the 13th century
Two styles of 7-sided dice based on those portrayed in the "Book of Games" a manuscript commissioned by Aphonso X circa 1280 A.D. One is a 7-sided "log" die about 2" long, the other is a short polygon with 5 square faces and two five-sided faces. approximately 3/4." Molded in resin to simulate bone or ivory.
They were used with a form of 7-player Backgammon and a variation on Chess which was played on a board 10 squares on each side and extra pieces, the dice were used to determine which Chess piece you could move.
These dice can land with one corner facing up, so they were apparently scored by counting the the upper-most side that lands facing the player who rolled the die.
Although we are attempting to simulate hand-made dice based on a historic example, we took our master copies of these dice to a modern machine shop to mill the faces accurately in order to make them as random as possible.
When rolling the pentagonal die you can feel which way it is facing in your hand and effect the outcome. Therefore to get a more random result we recommend using some form of dice cup.
The "log" version works best if you "roll" it out of your hand rather than "throwing" it.
Set of 2 Dice
$10.00 + shipping
The description of the dice translated from the Alphonso MS:
"And these die are made like this: they have seven sides and the side with the highest number of pips is seven. They could not be made in another way for this game. Because the shape of this die is uneven it falls edge up, with two sides showing. The side closest to the roller is his. If they fall so that it cannot be determined which face to use, they are to be thrown until it can. As in the other, Larger Chess the pieces are moved by an eight-sided die, in this chess the ten pieces are moved by a seven-sided die. Because it has seven on the first side, six on the second, and so on down to one..."
"There are other seven-sided dice than the ones We describe above. And this is how they are: they have two flat ends, the upper end with seven and the lower with six. The sides have five faces and because the sides are odd in number they cannot help but fall edge up. And for these five sides the play is the same as We described before. And this is what they look like."