Thanks to this nifty chart at Random Wizard Blog in combination with the AD&D Book of Lairs I finally have a good grasp of THAC0. People have tried to explain it to me before and I just never understood. I think it was because I didn’t realize you needed 2 different charts. This should make it easy to figure stats on the fly when converting AD&D modules to DCC. I can’t wait to give it a try, probably starting with something from the Book of Lairs in my Tuesday night online DCC game!