Satellite tournament #1 for CIS-2016 in St. Petersburg.

I spent 10 minutes studying the save with the archangels. Everything looks better and more promising for Kostya. I believe he would win in such a layout 9 out of 10 times. Again, I am adjusting for the skill level of both players. With perfect play for the blues, the advantage can probably be significantly reduced. But it is difficult to say in a real situation how that could be achieved. Opening up gives many options for the development of events, specifically those described by Sevensan, based on hunting Pirya. However, I don't think that without opening up one can be sure that Grechka doesn't have wisdom and that Pirya is target number 1.
As Preds described, in any case there are many ways to save Pirya, even if a hunt is declared for her. Once they get DD, and then the box of earth, the reds gain full control over the situation. Thank you.

P.S. the elixir doesn't save them, nor does a hundred demons