Re6
A very fine move
After 1.Re6 Qxe6 the Nb3 is pinned.
Of course the king is on a2, look at the position!
Yes I see that the knight is pinned, and I also see that white can move a pawn and the king can move to a square so he is not stalemated after your cited variation. The board has no notations, so why can the king be on h7 making e8 (Q) the best move?
The orientation of the board is the usual one, the white king is on a2, the white pawn goes up. Sorry, but I don't know how to settle the notation.
Since you said that the first move is really amazing, I looked at the more "extreme" options. After examining this one move, It gradually became evident that it actually works. And for those who gave up, here's the fattest hint I can give:
Hint (highlight this line) - The first move is a knight move.
And now, can you see the whole thing?
This puzzle has a vaguely familiar feeling to it. I think that I've already seen this long ago.
thank you for having taken me seriously.
The whole idea is in the first move, which is really amazing.