On an android app, called Classic Solitaire Klondike from Potato Jam, I'm struggling with a deck which seems unsolvable. In this app, 100% of the decks had a solution before.
I wrote a solver running every possible solution, but nothing comes out.
Here's a capture done with my solver:

I represented with red color the cards I never managed to flip. So I get stuck quite fastly. In the app, the deck is identified by the following seed number: 43688966
I guess I must probably miss something, but can't see where ...