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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 (1012) and each piece's element ID, both listed above.
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Duplo Tile 2 x 2 x 1 with Shape Black Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Black Right Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Blue Inverse Isosceles Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Blue Quarter Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Blue Right Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Blue Square Print
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Duplo Tile 2 x 2 x 1 with Shape Green Inverse Arch Print
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Duplo Tile 2 x 2 x 1 with Shape Green Inverse Isosceles Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Green Inverse Quarter Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Green Isosceles Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Green Quarter Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Green Square Print
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Duplo Tile 2 x 2 x 1 with Shape Red Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Red Inverse Arch Print
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Duplo Tile 2 x 2 x 1 with Shape Red Inverse Isosceles Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Red Inverse Quarter Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Red Right Triangle Print
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Duplo Tile 2 x 2 x 1 with Shape Red Square Print
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Duplo Tile 2 x 2 x 1 with Shape Yellow Circle Print
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Duplo Tile 2 x 2 x 1 with Shape Yellow Right Triangle Print
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Duplo Baseplate 24 x 24
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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.
