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Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (9221) and each piece's element ID, both listed above.
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Duplo Tile 2 x 2 x 1 with Mosaic, Community 1 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 10 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 11 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 12 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 13 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 14 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 15 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 16 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 17 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 18 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 2 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 3 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 4 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 5 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 6 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 7 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 8 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Community 9 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 1 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 10 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 11 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 12 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 13 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 14 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 15 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 16 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 17 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 18 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 2 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 3 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 4 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 5 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 6 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 7 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 8 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Home 9 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 1 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 10 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 11 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 12 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 13 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 14 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 15 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 16 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 17 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 18 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 2 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 3 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 4 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 5 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 6 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 7 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 8 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Park 9 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 1 Print - 9221-1
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Duplo Tile 2 x 2 x 1 with Mosaic, Town 10 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 11 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 12 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 13 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 14 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 15 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 16 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 17 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 18 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 2 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 3 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 4 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 5 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 6 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 7 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 8 Print - 9221-1
×1
Duplo Tile 2 x 2 x 1 with Mosaic, Town 9 Print - 9221-1
×1
Duplo Plate 6 x 12
×4
Tick each piece as you find it, or mark it missing.
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.
Request a replacement from LEGOMark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.
