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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.

The Skeleton Attack

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21146 The Skeleton Attack

435 pieces in 128 part and color combinations, plus 4 minifigures.

The official piece count includes the 22 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Plates 157 pieces

  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 2 x 12 Blue Part 2445 Element 244523 ×1
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×1
  • Plate 4 x 12 Blue Part 3029 Element 4528850 or 4166870 ×1
  • Plate 8 x 16 Blue Part 92438 Element 4610354 ×2
  • Plate 4 x 4 Bright Green Part 3031 Element 4617799 or 4243836 ×1
  • Plate 6 x 12 Bright Green Part 3028 Element 4541414 ×1
  • Plate 6 x 6 Dark Bluish Gray Part 3958 Element 4211134 ×1
  • Plate 8 x 8 Dark Bluish Gray Part 41539 Element 4210802 ×1
  • Plate 1 x 6 Dark Brown Part 3666 Element 6223039 or 4566704 ×2
  • Plate 1 x 2 Green Part 3023 Element 302328 ×8
  • Plate 1 x 8 Green Part 3460 Element 346028 ×1
  • Plate 2 x 2 Green Part 3022 Element 302228 ×2
  • Plate 2 x 4 Green Part 3020 Element 302028 ×5
  • Plate 2 x 8 Green Part 3034 Element 303428 ×4
  • Plate 4 x 8 Green Part 3035 Element 4277361 ×1
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×4
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×3
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×9
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×4
  • Plate 6 x 10 Orange Part 3033 Element 6034497 or 4505159 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 1 spare in the box ×7
  • Plate 1 x 2 Reddish Brown Part 3023 Element 4211150 ×14
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×1
  • Plate 1 x 8 Reddish Brown Part 3460 Element 4216945 ×4
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×22
  • Plate 2 x 2 Corner Reddish Brown Part 2420 Element 4211257 ×4
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×10
  • Plate 2 x 6 Reddish Brown Part 3795 Element 4211247 ×1
  • Plate 2 x 8 Reddish Brown Part 3034 Element 4211211 ×1
  • Plate 4 x 6 Reddish Brown Part 3032 Element 4271874 or 4211213 ×1
  • Plate 1 x 6 Tan Part 3666 Element 4124067 or 366605 ×2
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×1
  • Plate 2 x 6 Tan Part 3795 Element 4113993 or 379505 ×1
  • Plate 8 x 8 Tan Part 41539 Element 4624223 or 4502811 ×3
  • Plate 1 x 1 Trans-Brown Part 3024 Element 6513960 or 6252039 1 spare in the box ×7
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 ×1
  • Plate 1 x 2 Trans-Orange Part 3023 Element 6514005 or 6240217 ×1
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 1 spare in the box ×1
  • Plate 1 x 2 Trans-Yellow Part 3023 Element 6514002 or 6240211 ×2
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×9
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1

Bricks 106 pieces

  • Brick 1 x 2 with Pixelated Forge Print Dark Bluish Gray Part 3004pr0021 Element 6216860 ×1
  • Brick 1 x 2 with Pixelated Lit Forge Print Dark Bluish Gray Part 3004pr0020 Element 6216862 ×1
  • Brick 2 x 6 Dark Bluish Gray Part 2456 Element 4282819 or 4210875 ×1
  • Brick 1 x 1 Dark Brown Part 3005 Element 6226437 or 6089841 Also in Reddish Brown ×11
  • Brick 1 x 8 Green Part 3008 Element 4143953 or 4112839 ×5
  • Brick 2 x 2 Green Part 3003 Element 300328 ×2
  • Brick 2 x 4 Green Part 3001 Element 4106356 or 300128 ×1
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×14
  • Brick 2 x 4 Light Bluish Gray Part 3001 Element 4211385 ×8
  • Brick 2 x 8 Light Bluish Gray Part 3007 Element 6037399 or 4211391 ×5
  • Brick 1 x 1 Medium Nougat Part 3005 Element 6057986 or 4569624 ×5
  • Brick 1 x 2 Medium Nougat Part 3004 Element 4569382 ×4
  • Brick 1 x 2 with Reddish Brown and Dark Brown Lines Print Medium Nougat Part 3004pr0014 Element 6097024 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick 1 x 1 Reddish Brown Part 3005 Element 4211242 Also in Dark Brown ×1
  • Brick 1 x 1 x 3 Reddish Brown Part 14716 Element 6177699 ×10
  • Brick 1 x 2 Reddish Brown Part 3004 Element 4613963 or 4211149 ×3
  • Brick 1 x 2 x 5 with Hollow Studs Reddish Brown Part 2454b Element 4277016 ×9
  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×2
  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×4
  • Brick 2 x 2 x 3 Reddish Brown Part 30145 Element 6173948 or 4220430 ×1
  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×1
  • Brick 2 x 2 without Inside Ridges Trans-Green Part 6223 Element 6514090 or 6219774 ×14

Plates Special 87 pieces

  • Bracket 1 x 2 - 1 x 2 Black Part 99781 Element 6016172 ×2
  • Plate Special 1 x 1 with Tooth Black Part 49668 Element 4273590 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Blue Part 87580 Element 6126049 or 4565319 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×19
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Green Part 87580 Element 6389692 or 4565321 ×17
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×1
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Medium Nougat Part 60470b Element 6347306 or 6167698 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Medium Nougat Part 87580 Element 6102994 ×17
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] Pearl Gold Part 15208 Element 6207764 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Reddish Brown Part 99780 Element 6174856 ×2
  • Bracket 1 x 2 - 2 x 2 Inverted Reddish Brown Part 99207 Element 6226436 ×10
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Reddish Brown Part 60478 Element 6102975 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Reddish Brown Part 87580 Element 4565394 ×5
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Tan Part 87580 Element 4565387 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×1

Tiles 25 pieces

  • Tile 1 x 6 with Groove Dark Bluish Gray Part 6636 Element 4210651 ×2
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 ×1
  • Tile 1 x 1 with Groove Medium Nougat Part 3070b Element 6177146 1 spare in the box ×4
  • Tile 1 x 2 with Groove Medium Nougat Part 3069b Element 6021997 ×4
  • Tile 1 x 4 with Groove Medium Nougat Part 2431 Element 6102998 or 4657956 ×9
  • Tile 2 x 2 with Dark Brown Minecraft Grid Print (Crafting Table) Medium Nougat Part 3068bpr0236 Element 6097003 ×1
  • Tile 2 x 3 with Centered Black Minecraft Style Arrow, Dark Brown Lines with Single Pixel Square Print Medium Nougat Part 26603pr0006 Element 6192782 ×1
  • Tile 2 x 4 with Groove Medium Nougat Part 87079 Element 6218359 ×2
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×1

Plates Round Curved and Dishes 19 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×2
  • Plate Round 1 x 1 with Open Stud Reddish Brown Part 85861 Element 6215659 1 spare in the box ×7
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 1 spare in the box ×4

Bricks Special 8 pieces

  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Medium Nougat Part 60475b Element 6360035 or 4569385 ×4
  • Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side Reddish Brown Part 32952 Element 6201911 ×1
  • Brick Special 1 x 2 with Groove Tan Part 4216 Element 6103001 or 4163617 ×2
  • Brick Special 1 x 2 with Groove White Part 4216 Element 6619288 or 4264360 ×1

Minifig Shields, Weapons, & Tools 6 pieces

  • Weapon Axe Blocky Dark Bluish Gray Part 18788 Element 6189164 or 6093624 ×1
  • Weapon Sword Blocky Dark Bluish Gray Part 18787 Element 6526124 or 6134370 ×1
  • Weapon Bow and Arrow, Blocky Medium Lavender Part 18792 Element 6167567 ×1
  • Tool Pickaxe Blocky, Double Reddish Brown Part 18789 Element 6093628 ×1
  • Weapon Bow and Arrow, Blocky Reddish Brown Part 18792 Element 6089103 ×2

Plants & Trees 6 pieces

  • Plant, Flower 2 x 2 Leaves - Angular Bright Green Part 4727 Element 4143562 ×1
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Green Part 24866 Element 6526150 or 6206150 1 spare in the box ×2
  • Plant, Carrot Top Bright Light Orange Part 33183 Element 6096682 1 spare in the box ×2
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Red Part 24866 Element 6206148 1 spare in the box ×1

Hinges, Arms and Turntables 5 pieces

  • Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×2
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×1
  • Hinge Brick 2 x 2 Top Plate Thin White Part 6134 Element 6548272 or 4612342 ×1
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove White Part 44567a Element 6214612 or 4518441 ×1

Bars, Ladders and Fences 2 pieces

  • Bar 1 x 4 x 3 [End Tabs] Medium Nougat Part 62113 Element 6167599 ×2

Bricks Round and Cones 2 pieces

  • Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×2

Bricks Sloped 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 ×2

Containers 2 pieces

  • Treasure Chest Bottom with Rear Slots, with Groove Medium Nougat Part 4738b ×1
  • Treasure Chest Lid [Thick Hinge] Medium Nougat Part 4739a Element 6254218 or 6167286 ×1

Minifig Accessories 2 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Brown Part 64644 Element 4538950 ×1
  • Equipment Scissors Flat Silver Part 18920 Element 6096993 1 spare in the box ×1

Minifig Heads 2 pieces

  • Minifig Head Special, Cube with Pumpkin Jack O' Lantern Print Orange Part 19729pr0005 Element 6546772 or 6162469 ×1
  • Minifig Head Special, Cube with Rear Ledge, Pixelated White and Tan Face, Dark Tan Outline with Pink Mouth Print Red Part 19727pr0020 Element 6546786 or 6227158 ×1

Minifig Neckwear 1 piece

  • Minifig Neckwear Bracket [One Stud] White Part 42446 Element 6167602 or 4210470 1 spare in the box ×1

Technic Bricks 1 piece

  • Technic Brick 1 x 1 with Pin Hole White Part 6541 Element 6609542 or 654101 ×1

Tiles Special 1 piece

  • Tile Special Round 1 x 1 with Hollow Bar Trans-Clear Part 20482 Element 6507895 or 6186867 1 spare in the box ×1

Tools 1 piece

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

Minifigures 4 figures

  • Steve Minifigure, checked as a whole figure ×1
  • Skeleton, Square Skull (60115 Torso) Minifigure, checked as a whole figure ×2
  • Skeleton, Square Skull, Medium Lavender Helmet (60115 Torso), Spider Jockey 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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