>>213704187 (OP)
Before you snuff me out, though - have you heard about this thingamajig dice enthusiasts have been raving about? It's called THAC0, and it's a measure of a character's or monster's ability to successfully attack an opponent in physical combat. Each creature has an armor class that determines how hard it is to hit that creature, with lower numbers representing higher difficulty. For example, a normal, unarmored human has an armor class of 10 while a heavily armored fighter might have an armor class of 1 or 0.
The success of a character's or monster's attack is determined by rolling a 20-sided die. If the number obtained equals or exceeds the attacker's THAC0, the attacker has successfully hit a target with armor class 0. If the target has an armor class different from zero, the target's armor class is subtracted from the attacker's THAC0, and that number is what the attacker's roll must equal or exceed.
A simple formula for quickly calculating the success or failure of an attack roll using THAC0 is:
THAC0 - (roll on a d20) = AC Hit.
For example, if the attacker has a THAC0 of 17 and rolls a 15 on his or her To Hit roll, the attacker has succeeded in hitting if the target's armor class is 2 or higher (2 or worse).
High THAC0s signify that an attacker is poor at hitting targets, while low THAC0s indicate the attacker can hit targets with ease. There is nothing particularly significant about an armor class of 0 other than the fact that it simplifies calculations.
I think we could try that straight away, life's got more than 2 sides.
