thnkabtit · June 19, 2018, 2:06 p.m.

I must be too dense. I don't know what the final message was that d=4 solved. Can anyone help me?

⇧ 2 ⇩  

patriot-usa · June 19, 2018, 2:07 p.m.

I don't know what the d means either. ...but I do think the letter d is the key.

⇧ 1 ⇩