@DangerBunny – I have a slide rule (but it belonged to my father). Corollary to that question – if you have a slide rule, do you know how to use it? I used to know how to do some of the basic functions but I’m not sure I do any more.
Warning – there may be a potential spoiler in my reply
I have read all the strips as they were posted originally and also I have been reading “For Better or For Worse” – The Complete Library Volume 9 (which is the last book in the collection). In one of the strips, Anthony and Elizabeth were discussing this topic.
@wubby – but white has to cooperate or it won’t work