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LEGO Missing Piece Checker

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.

Play Day 2023 - The Mysteries of Play

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6471929 Play Day 2023 - The Mysteries of Play

118 pieces in 59 part and color combinations, plus 1 minifigure.

The piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

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Piece checklist

Bricks 44 pieces

  • Brick 1 x 6 Black Part 3009 Element 300926 ×8
  • Brick 1 x 8 Black Part 3008 Element 300826 ×8
  • Brick 1 x 2 Bright Light Orange Part 3004 Element 6003003 or 4490695 ×1
  • Brick 1 x 3 Bright Light Orange Part 3622 Element 6061688 or 4490696 ×2
  • Brick 1 x 4 Bright Light Orange Part 3010 Element 6003004 or 4490697 ×1
  • Brick 2 x 2 Bright Light Orange Part 3003 Element 6295078 or 4645051 ×1
  • Brick 2 x 2 Dark Blue Part 3003 Element 4296785 or 4264580 ×2
  • Brick 2 x 4 Dark Blue Part 3001 Element 6275133 or 4530029 ×1
  • Brick 2 x 4 Dark Tan Part 3001 Element 4497066 or 4247145 ×2
  • Brick 2 x 2 Green Part 3003 Element 300328 ×1
  • Brick 2 x 6 Green Part 2456 Element 4181135 or 4142867 ×1
  • Brick 2 x 4 Medium Blue Part 3001 Element 4205058 or 4201236 ×2
  • Brick 2 x 2 Orange Part 3003 Element 4153825 or 4119643 ×2
  • Brick 2 x 4 Orange Part 3001 Element 4153827 or 4119641 ×1
  • Brick 1 x 2 x 2 with Inside Stud Holder Red Part 3245c Element 4143832 ×1
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×4
  • Brick 2 x 2 x 3 Red Part 30145 Element 6138839 or 4107634 ×2
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2

Plates 21 pieces

  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • Plate 2 x 2 Bright Light Orange Part 3022 Element 6003033 or 4645047 ×1
  • Plate 2 x 2 Dark Blue Part 3022 Element 6037890 or 4528982 ×1
  • Plate 8 x 8 Dark Red Part 41539 Element 6249819 or 4262018 ×2
  • Plate 2 x 2 Dark Tan Part 3022 Element 6047415 or 4497081 ×1
  • Plate 2 x 2 Green Part 3022 Element 302228 ×1
  • Plate 2 x 2 Medium Blue Part 3022 Element 4653540 or 4629787 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×3
  • Plate 2 x 4 Red Part 3020 Element 302021 ×4
  • Plate 2 x 6 Red Part 3795 Element 379521 ×3
  • Plate 2 x 8 Red Part 3034 Element 303421 ×1

Tiles 21 pieces

  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×2
  • Tile 2 x 6 Black Part 69729 Element 6318582 ×3
  • Tile 2 x 2 with Groove Bright Light Orange Part 3068b Element 6020147 or 4525871 ×3
  • Tile 2 x 2 with Groove Dark Blue Part 3068b Element 4205004 ×1
  • Tile 2 x 4 with Groove Dark Blue Part 87079 Element 4569836 ×1
  • Tile 2 x 2 with Groove Dark Tan Part 3068b Element 4507045 or 4251986 ×1
  • Tile 2 x 4 with Groove Dark Tan Part 87079 Element 6164288 ×1
  • Tile 2 x 2 with Groove Green Part 3068b Element 4107762 or 306828 ×1
  • Tile 2 x 4 with Groove Green Part 87079 Element 4566179 ×1
  • Tile 2 x 2 with Groove Medium Blue Part 3068b Element 4528357 or 4188291 ×1
  • Tile 2 x 4 with Groove Medium Blue Part 87079 Element 6590056 or 6383458 ×1
  • Tile 2 x 2 with Groove Orange Part 3068b Element 4542142 or 4125268 ×1
  • Tile 2 x 6 Orange Part 69729 Element 6387565 ×1
  • Tile 2 x 4 with Groove Red Part 87079 Element 4560179 ×1

Bricks Curved 10 pieces

  • Brick Arch 1 x 3 x 2 Red Part 88292 Element 6056816 ×4
  • Brick Curved 1 x 3 x 2 Inverted [Inside Bow] Red Part 18653 Element 6294331 ×6

Bricks Special 8 pieces

  • Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder Red Part 86876 Element 6397572 ×6
  • Brick Special 1 x 2 with 2 Studs on 1 Side Red Part 11211 Element 6019155 ×2

Tiles Round and Curved 6 pieces

  • Tile 2 x 2 Curved, Macaroni Metallic Gold Part 27925 Element 6546120 or 6294524 ×3
  • Tile Round 1 x 1 Quarter Metallic Gold Part 25269 Element 6546116 or 6251591 ×2
  • Tile Round 1 x 1 Pearl Gold Part 98138 Element 6238891 or 4649422 ×1

String, Bands and Reels 3 pieces

  • Chain 16L [21 Links] Dark Bluish Gray Part 60169 Element 6258887 or 4516456 ×2
  • Chain 6L [5 Links] Dark Bluish Gray Part 92338 Element 6311445 or 4600437 ×1

Plates Special 2 pieces

  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Black Part 41740 Element 6254045 ×2

Minifig Accessories 1 piece

  • Equipment Magnifying Glass with Thin Frame and Hollow Handle with Trans-Red Lens Pattern Black Part 30152pat0003 Element 4223362 ×1

Minifig Heads 1 piece

  • Minifig Head, Brown Eyebrows, Open Mouth Smile with White Teeth and Red Tongue Print Yellow Part 3626cpr9950 Element 6218234 ×1

Minifig Headwear 1 piece

  • Hat Wide Brim, Outback Style with Wide Belt, Buckle (Fedora) Dark Brown Part 61506 Element 6396165 ×1

Minifigures 1 figure

  • Detective, Play Day Torso, Sand Blue Hat with Red Hair Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

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 LEGO

Buy the piece

Mark 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.

Keep a record

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.

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