Honestly, if you enjoy puzzles you end up in a masochistic situation like this sooner or later.

My wife and I have a round puzzle with a similar piece structure that’s a high res image of the moon. Just gradients of grey and white. That’s why the sister puzzle of earth has yet to be opened.

OP! Call the people that make the puzzle, some offer replacement pieces. My wife spilled a drink that should never have been on the puzzle table and warped 4 pieces. We contacted them, showed them the pieces and placement spots via photo and they sent them to us. I also have two puzzles with a similar approach you might enjoy since you clearly love torture. Pieces decrease in size towards the middle, puzzle is round instead of square and they are high res images - earth and the moon. Obviously you’d have an easier time with a design and colours but if you’re up for another puzzle, I’d look for those.

.