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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 Deep Dark Battle

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21246 The Deep Dark Battle

508 pieces in 122 part and color combinations, plus 3 minifigures.

The official piece count includes the 76 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.

8 more look-alike pairs
  • Brick 1 x 6 Black ×1 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
  • Brick 2 x 4 Black ×2 Dark Bluish Gray ×9 Black is darker than Dark Bluish Gray.
  • Plate 1 x 2 Black ×5 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.
  • Plate 2 x 4 Black ×10 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
  • Plate 2 x 6 Black ×6 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
  • Plate 4 x 8 Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Plate 6 x 8 Black ×1 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Technic Brick 1 x 1 with Axle Hole Black ×1 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
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Piece checklist

Dark Bluish Gray 128 pieces

  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×3
  • Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 Also in Black ×17
  • Brick 1 x 4 Dark Bluish Gray Part 3010 Element 4211103 ×3
  • Brick 1 x 6 Dark Bluish Gray Part 3009 Element 4211100 Also in Black ×1
  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 ×33
  • Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 Also in Black ×9
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×2
  • Panel 1 x 2 x 1 with Rounded Corners and 2 Sides Dark Bluish Gray Part 23969 Element 6275131 ×16
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×4
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×1
  • Plate 1 x 8 Dark Bluish Gray Part 3460 Element 4210998 ×4
  • Plate 16 x 16 Dark Bluish Gray Part 91405 Element 6004927 ×1
  • Plate 2 x 10 Dark Bluish Gray Part 3832 Element 4210678 ×1
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×1
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 Also in Black ×1
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 Also in Black ×1
  • Plate 4 x 8 Dark Bluish Gray Part 3035 Element 4211061 Also in Black ×2
  • Plate 6 x 10 Dark Bluish Gray Part 3033 Element 4211114 ×2
  • Plate 6 x 8 Dark Bluish Gray Part 3036 Element 4210794 Also in Black ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×20
  • Technic Brick 1 x 1 with Axle Hole Dark Bluish Gray Part 73230 Element 6362259 Also in Black ×2
  • Tile 1 x 1 with Groove Dark Bluish Gray Part 3070b Element 4210848 1 spare in the box ×2

Black 119 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 Also in Dark Bluish Gray ×4
  • Brick 1 x 2 x 2 with Inside Stud Holder Black Part 3245c Element 4618852 ×4
  • Brick 1 x 6 Black Part 3009 Element 300926 Also in Dark Bluish Gray ×1
  • Brick 1 x 8 Black Part 3008 Element 300826 ×2
  • Brick 2 x 4 Black Part 3001 Element 300126 Also in Dark Bluish Gray ×2
  • Brick 2 x 6 Black Part 2456 Element 4181144 or 245626 ×2
  • Brick 2 x 8 Black Part 3007 Element 6037390 or 300726 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes] Black Part 76959 Element 6425507 ×10
  • Brick Special 2 x 2 with Grooves and Axle Hole Black Part 90258 Element 6430547 or 6052796 ×8
  • Plate 1 x 1 Black Part 3024 Element 302426 1 spare in the box ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×5
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 2 x 2 Black Part 3022 Element 302226 Also in Dark Blue ×10
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 Also in Dark Blue ×10
  • Plate 2 x 4 Black Part 3020 Element 302026 Also in Dark Bluish GrayAlso in Dark Blue ×10
  • Plate 2 x 6 Black Part 3795 Element 379526 Also in Dark Bluish GrayAlso in Dark Blue ×6
  • Plate 4 x 8 Black Part 3035 Element 303526 Also in Dark Bluish Gray ×2
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 Also in Dark Bluish GrayAlso in Dark Blue ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Special 1 x 2 with Pin Hole on Top Black Part 11458 Element 6114987 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×2
  • Technic Beam 3 x 3 L-Shape Thin Black Part 32056 Element 6271810 or 4112287 ×2
  • Technic Brick 1 x 1 with Axle Hole Black Part 73230 Element 6344819 Also in Dark Bluish Gray ×1
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×3
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×12
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×2
  • Tile Round 2 x 2 with Bottom Stud Holder Black Part 14769 Element 6070695 ×1
  • Tile Round 2 x 2 with Pixelated Dark Turquoise and Dark Azure Squares Print Black Part 14769pr1255 Element 6422992 ×2
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Black Part 99563 Element 6156991 ×6

Dark Blue 88 pieces

  • Brick 2 x 2 Dark Blue Part 3003 Element 4296785 or 4264580 ×5
  • Plate 2 x 2 Dark Blue Part 3022 Element 6037890 or 4528982 Also in Black ×21
  • Plate 2 x 2 Corner Dark Blue Part 2420 Element 4528482 or 4252046 Also in Black ×4
  • Plate 2 x 4 Dark Blue Part 3020 Element 6554194 or 4667595 Also in Black ×2
  • Plate 2 x 6 Dark Blue Part 3795 Element 6097420 or 4649974 Also in Black ×2
  • Plate 4 x 4 Dark Blue Part 3031 Element 6027625 ×1
  • Plate 6 x 8 Dark Blue Part 3036 Element 6146302 or 6039675 Also in Black ×3
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Dark Blue Part 65509 Element 6357956 ×4
  • Tile Round 1 x 1 Dark Blue Part 98138 Element 6284584 or 6219601 2 spares in the box ×14
  • Tile Round 1 x 1 Quarter Dark Blue Part 25269 Element 6554207 or 6199890 2 spares in the box ×32

Light Bluish Gray 55 pieces

  • Brick 1 x 6 Light Bluish Gray Part 3009 Element 4211393 ×1
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×2
  • Brick 2 x 2 Corner Light Bluish Gray Part 2357 Element 4211349 ×5
  • Brick 2 x 8 Light Bluish Gray Part 3007 Element 6037399 or 4211391 ×1
  • Brick Round 2 x 2 [Grill] Light Bluish Gray Part 92947 Element 4650645 or 4610816 ×1
  • Brick Special 1 x 2 with Masonry Brick Profile Light Bluish Gray Part 98283 Element 6000066 ×4
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×6
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×4
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×13
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×4
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×1
  • Plate Special 1 x 2 with Pin Hole Underneath Light Bluish Gray Part 18677 Element 6168633 or 6089147 ×2
  • Technic Beam 3 x 0.5 Liftarm with Boss and Blocked, Squared Pin Hole Light Bluish Gray Part 61408 Element 6331859 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Light Bluish Gray Part 32064a Element 6206249 or 4233493 ×2
  • Technic Pin Long 3l with Stop and Hole Light Bluish Gray Part 77765 Element 6338962 ×1
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×4
  • Tile 2 x 3 with 8 Silver Squares and Reddish Brown Squares on Dark Brown Background Print Light Bluish Gray Part 26603pr0010 Element 6432167 or 6198008 ×1

Dark Turquoise 28 pieces

  • Brick 1 x 2 Dark Turquoise Part 3004 Element 6217659 or 4121500 ×1
  • Plate 1 x 2 Dark Turquoise Part 3023 Element 6213777 or 4218493 ×4
  • Plate Round 1 x 1 with Solid Stud Dark Turquoise Part 6141 Element 6325978 1 spare in the box ×5
  • Technic Beam 1 x 7 Thick Dark Turquoise Part 32524 Element 6323477 or 4144021 ×2
  • Tile Round 1 x 1 Dark Turquoise Part 98138 Element 6311437 1 spare in the box ×12
  • Tile Special 1 x 2 with Two Vertical Teeth / Tooth Dark Turquoise Part 15209 Element 6430544 ×4

White 24 pieces

  • Animal Body Part, Dog Bone [Short] White Part 93160 Element 6360202 or 4600294 1 spare in the box ×1
  • Brick 1 x 2 with Black 'TNT' Pixelated Print White Part 3004pr0036 Element 6097028 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2
  • Minifig Head Special, Cube with Skeleton Face Print White Part 19729pr0002 Element 6162386 or 6103084 ×1
  • Plate 1 x 1 x 2/3 with Open Stud White Part 86996 Element 6383985 ×10
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×2
  • Plate Special 1 x 2 with Pin Hole Underneath White Part 18677 Element 6232029 ×2
  • Plate Special 2 x 2 with Pixelated Trans-Light Blue Flames Pattern White Part 41685pat0002 Element 6394965 ×2
  • Tile Round 1 x 1 White Part 98138 Element 6564903 or 6284572 1 spare in the box ×2

Tan 12 pieces

  • Brick Special 1 x 2 with Groove Tan Part 4216 Element 6103001 or 4163617 ×4
  • Panel 2 x 2 x 1 Corner Posts with Centre Stud Tan Part 3131 Element 6429962 ×2
  • Plate 1 x 3 Tan Part 3623 Element 4121921 or 362305 ×1
  • Plate 1 x 4 Tan Part 3710 Element 4113233 or 371005 ×1
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 1 spare in the box ×4

Light Aqua 11 pieces

  • Tile Round 1 x 1 Light Aqua Part 98138 Element 6398079 or 6322818 1 spare in the box ×11

Trans-Orange 10 pieces

  • Wave / Flame Small with Pin Trans-Orange Part 37775 Element 6514274 or 6357747 1 spare in the box ×10

Red 7 pieces

  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×4
  • Technic Axle 8 Red Part 3707 Element 6130004 ×1
  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×1

Trans-Clear 5 pieces

  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 1 spare in the box ×3
  • Plate Special Round 1 x 1 with Hollow Stud and Bar on Underside - Long Space Trans-Clear Part 79194 Element 6510217 or 6359231 1 spare in the box ×1
  • Tile Special Round 1 x 1 with Hollow Bar Trans-Clear Part 20482 Element 6507895 or 6186867 1 spare in the box ×1

Blue 3 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×3

Dark Brown 3 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Brown Part 64644 Element 4538950 ×3

Trans-Light Blue 3 pieces

  • Plate 1 x 1 Trans-Light Blue Part 3024 Element 6513964 or 6252043 1 spare in the box ×3

Yellow 3 pieces

  • Technic Axle Connector Smooth [with x Hole + Orientation] Yellow Part 59443 Element 4519010 ×1
  • Technic Pin without Friction Ridges Lengthwise Yellow Part 3673 Element 6331822 1 spare in the box ×2

Medium Lavender 2 pieces

  • Tool Hoe Blocky Medium Lavender Part 3129 Element 6430546 ×1
  • Weapon Crossbow and Bolt, Blocky Medium Lavender Part 65510 Element 6429963 ×1

Medium Nougat 2 pieces

  • Treasure Chest Bottom with Rear Slots, No Groove Medium Nougat Part 4738c Element 6102984 ×1
  • Treasure Chest Lid, Flat with 2 Studs Medium Nougat Part 80835 Element 6394960 ×1

Reddish Brown 2 pieces

  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 1 spare in the box ×1
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×1

Orange 1 piece

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

Pearl Titanium 1 piece

  • Weapon Sword Blocky Pearl Titanium Part 18787 Element 6350506 ×1

Trans-Red 1 piece

  • Minifig Head [Plain] [Vented Stud - 2 Holes] Trans-Red Part 28621 Element 6513995 or 6276023 ×1

Minifigures 3 figures

  • Arbalest Knight Minifigure, checked as a whole figure ×1
  • Netherite Knight, Helmet and Armor Minifigure, checked as a whole figure ×1
  • Warden 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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