Pretty cool, but I have some questions and comments.
1. Could you provide the moves leading up to the position?
2. How is this position related to Marshall's famous move Qg3? You say it is Qg3 V.2, but it does not seem to be connected in terms of concept.
For those who do not know to what I am refering to, the game is Levitsky-Marshall, 1912.
This position came up in a game between my Dad and me. What strikes me about it is that white has 3 ways to prevent mate but all of them lead to disaster! Of course it is not as impressive as Marshall's Qg3...
Btw in the actual game my dad played it like in the first diagram.