Completed upto crystal level 6. So many wrong moves and repeated puzzles.


Puzzles are meant for pattern recognition. They will repeat randomly to make sure you remember the pattern. There is a "report a bug" link if needed.
How do I report a bad puzzle? - Chess.com Member Support and FAQs
How do I report a bug or make a suggestion? - Chess.com Member Support and FAQs
Happy Chessing!