We are not able to replace individual puzzle pieces. Please Note - the only way to know if you are truly missing a piece is to complete your puzzle. We ask that you complete your puzzle and perform a thorough search for your missing piece before submitting a claim. We often hear that pieces like to hide in the most interesting places! A completed puzzle photo showing the missing piece area as well as a photo of the barcode from your box are required with all claims. Please email your information including name, address, puzzle information and photos to info@whitemountainpuzzles.com. If all information meets our requirements, we will send out a replacement puzzle as expeditiously as possible. White Mountain Puzzles reserves the right to verify information, require a valid proof of purchase, and to deny requests in its discretion, including in cases of suspected fraud or abuse. Claims do NOT apply to puzzles purchased second hand, lent, borrowed, swapped, or non-U.S. shipping addresses.