How to update a PGN file with solutions to chess tactics puzzles

Hi,

Is there an app/utility that given a PGN file with several (~1000) chess tactics/puzzles that don't have the solution in the original PGN file would calculate it (by using stockfish or other engine) and write an updated PGN file with the solutions? Or what would you use to accomplish that in case such a tool doesn't exist?

I'm aware that for general tactics (find the best move type) it would be difficult for the engine to determine at which move the solution should end, but that's not a big issue - at least for mate in N problems it is obvious it ends with the mate.

Thanks in advance.

Hi, did you find I way to solve this? I have a pgn without solutions and want a way to generate them.

thanks