Dice notation

Dice notation (also known as dice algebra, common dice notation, RPG dice notation, and several other titles) is a system to represent different combinations of dice in wargames and tabletop role-playing games using simple algebra-like notation such as d8+2.

Dice notation (also known as dice algebra, common dice notation, RPG dice notation, and several other titles) is a system to represent different combinations of dice in wargames and tabletop role-playing games using simple algebra-like notation such as d8+2. To this basic notation, an additive modifier can be appended, yielding expressions of the form . The plus sign is sometimes replaced by a minus sign ("−") to indicate subtraction. is a number to be added to the sum of the rolls. Therefore, 1d20−10 would indicate a roll of a single 20-sided die with 10 being subtracted from the result. These expressions can also be chained (e.g. 2d6+1d8), though this usage is less common. Additionally, notation such as is not uncommon. In this case, the "L" is used to represent the lowest result; it is sometimes replaced by an "H" to represent the highest result. For instance, 4d6−L means a roll of 4 six-sided dice, dropping the lowest result. This application skews the probability curve towards the higher numbers, as a result a roll of 3 can only occur when all four dice come up 1 (probability ), while a roll of 18 results if any three dice are 6 (probability = ). Rolling three or more dice gives a probability distribution that is approximately Gaussian, in accordance with the central limit theorem. ==References==

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