This would make it easier to go back and do ones you got wrong (even though you since got them right, or had stockfish show you the correct moves).
Same with puzzle history. I just went back to look at which PotD I got -51 on last week, and I can't find it as they're all marked green/solved. In the end, marking puzzles with "green/solved" when i got them wrong but then got "right" with the help of stockfish, is providing a false history.
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