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> I am sure I was not the first to think it was related to Konrad Zuse's Z3.

The Zuse Z3 is literally the only thing I know of which hooks up with the abbreviation "Z3" in the context of computers.

On contrary, there's tons of papers published today referencing Z3, Why3, and so on. I immediately knew they meant the solver since that's the Z3 people use most today.

Oh, I just assumed that it was about re-programming the manufacturer Engine Control Unit [ECU] of a BMW Z3 :-)

Ok, we changed the title to that from "Programming Z3".

I thought Z3 is some cousin of the Z80 microprocessor.