Wonderful fortress study by Troitsky

I really like beautiful endgame studies. For me studying endgame studies can be beneficial. Studies often demonstrate the power and limitations of pieces in very pure form and also it can't be bad for the imagination to go through many of these.

Troitsky is one of the best known study composers of all time. In this study white seems to be in deep trouble since his knight is attacked and there doesn't seem to be a good way to stop the pawn...


Don't  worry though, we'll just let the d-pawn do it's best!

1.Nc6! d3
Otherwise the knight should get to the pawn, it only needs to sacrifice itself since we have the wrong rook's pawn and black can't win that
2.Nxa7 d2
3.Nb5 d1=Q
4.Nc3
What the hell? We just allowed black to make a new queen and now we attack it with a wimpy little knight and black can even move the queen and give us a check? Is there a solution or is this an early April Fool's joke??



What do you think??