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.
997 pieces in 307 part and color combinations, plus 4 minifigures.
LEGO counts 1,016 pieces. This inventory comes from a separate parts catalog and lists 1,017, including the 20 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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.
Plate 1 x 2Reddish Brown ×3Dark Brown ×4Reddish Brown is redder and lighter than Dark Brown.
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, SmallTan ×2Dark Tan ×4Tan is lighter than Dark Tan.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Tan ×3Dark Tan ×25Tan is lighter than Dark Tan.
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no studBlack ×4Dark Blue ×2Black is yellower and darker than Dark Blue.
Technic Axle and Pin Connector Angled #6 - 90°Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]Pearl GoldPart 21459Element 61165962 spares in the box×3
Weapon Sword / Katana / Wakizashi ShortPearl GoldPart 5644Element 64901961 spare in the box×1
Weapon Sword, Big Blade with BarPearl GoldPart 98137Element 6270131 or 4646843×2
Dark Green
31 pieces
Brick Curved 2 x 1 No Studs [1/2 Bow]Dark GreenPart 11477Element 6618099 or 6055225×6
Brick Curved 2 x 2 x 2/3Dark GreenPart 15068Element 6618100 or 6101285×2
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark GreenPart 54200Element 6618111 or 45043751 spare in the box×8
Brick Sloped 30° 1 x 2 x 2/3Dark GreenPart 85984Element 6618117 or 6168574×5
Creature Body Part, Dragon Head Upper Jaw with Yellow/Yellowish Green Eye, Gold Scales PrintDark GreenPart 7243pr0005Element 6601155×1
Plate 2 x 2 CornerDark GreenPart 2420Element 6618070 or 6541446×2
Plate 2 x 4Dark GreenPart 3020Element 6618075 or 4586057×2
Plate 2 x 6Dark GreenPart 3795Element 6618084 or 6253283×1
Tile Round 1 x 1 Half CircleDark GreenPart 24246Element 65546151 spare in the box×4
Dark Brown
30 pieces
Brick Curved 2 x 1 No Studs [1/2 Bow]Dark BrownPart 11477Element 6046943×6
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark BrownPart 54200Element 6259071 or 60330141 spare in the box×3
Brick Sloped 33° 3 x 1Dark BrownPart 4286Element 6300222×5
Plate 1 x 2Dark BrownPart 3023Element 6058221 or 6013831Also in Reddish Brown×4
Plate 1 x 8Dark BrownPart 3460Element 4519946×1
Plate 2 x 3 with 1 x 1 CutoutDark BrownPart 73831Element 6336664×1
Tile 1 x 4 with GrooveDark BrownPart 2431Element 6313874 or 4536989×2
Tile Round 1 x 1 QuarterDark BrownPart 25269Element 64625381 spare in the box×6
Wedge Plate 6 x 2 LeftDark BrownPart 78443Element 6542682×1
Wedge Plate 6 x 2 RightDark BrownPart 78444Element 6542683×1
Medium Nougat
24 pieces
Plate 1 x 1Medium NougatPart 3024Element 6215606 or 46450541 spare in the box×8
Plate 1 x 6Medium NougatPart 3666Element 6295464×2
Plate 1 x 8Medium NougatPart 3460Element 6347603×1
Plate 2 x 3Medium NougatPart 3021Element 6334099 or 4645060×2
Plate 2 x 8Medium NougatPart 3034Element 6226644×1
Plate Round Corner 3 x 3Medium NougatPart 30357Element 6252194×4
Plate Round Half 4 x 8Medium NougatPart 22888Element 6442141×1
Tile Round 1 x 2Medium NougatPart 1126Element 6507790 or 6399909×3
Tile Round 2 x 2 with Bottom Stud HolderMedium NougatPart 14769Element 6368592 or 6173694×2
Dark Blue
19 pieces
Bracket 1 x 2 - 1 x 2Dark BluePart 99781Element 6554220 or 6350417×1
Brick 1 x 2Dark BluePart 3004Element 4249891×1
Brick Curved 4 x 3 with 3 Layers, 1 x 3 Cutout on UndersideDark BluePart 66955Element 6323472×2
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark BluePart 54200Element 4504374 or 45020921 spare in the box×2
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no studDark BluePart 28192Element 6166857Also in Black×2
Brick Sloped Inverted 45° 2 x 1Dark BluePart 3665Element 6554200 or 6097498×2
Mech Chest Plate / Armor with HandleDark BluePart 8091Element 6595692×1
Plate Special 1 x 2 Rounded with 2 Open StudsDark BluePart 35480Element 6236571×2
Plate Special 2 x 2 with Only 2 studsDark BluePart 33909Element 6554209 or 6214810×4
Tile 2 x 3Dark BluePart 26603Element 6186974×2
Blue
13 pieces
Brick Special 1 x 1 with Stud on 1 SideBluePart 87087Element 4583862×1
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Technic Pin Long with Friction Ridges Lengthwise, 1 Center SlotBluePart 42924Element 6299413×10
Dark Red
9 pieces
Brick Curved 2 x 2 x 2/3Dark RedPart 15068Element 6107758×2
Brick Sloped 30° 1 x 2 x 2/3Dark RedPart 85984Element 6083977×1
Plate 1 x 6Dark RedPart 3666Element 4539062 or 4164108×4
Tile Round 1 x 1 Half CircleDark RedPart 24246Element 63229971 spare in the box×1
Weapon Sword with Jagged Edges, Double Axle Hole with Marbled Trans-Orange PatternDark RedPart 79895pat0001Element 6514437 or 6484298×1
Sand Blue
9 pieces
Brick 1 x 2Sand BluePart 3004Element 6177142 or 4153374×1
Brick Curved, 3 x 1 with 1/3 Inverted CutoutSand BluePart 70681Element 6612528×1
Plate 1 x 1Sand BluePart 3024Element 6257079 or 61950281 spare in the box×4
Plate 1 x 4Sand BluePart 3710Element 6111685 or 4169412×3
Green
3 pieces
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no studGreenPart 28192Element 6529283×1
Plant, Plate 1 x 1 Round with 3 LeavesGreenPart 32607Element 6229130×2
Olive Green
2 pieces
Plant, Plate 1 x 1 Round with 3 LeavesOlive GreenPart 32607Element 6398008×2
[No Color/Any Color]
2 pieces
Poster for Set 71871-1[No Color/Any Color]Part 6650823Element 6650823×1
Sticker Sheet for Set 71871-1[No Color/Any Color]Part 10117181Element 6601157×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Trans-Clear
1 piece
Bar, Angled with 1 x 1 Round Plate / Stud on EndTrans-ClearPart 65578Element 6510188 or 62855871 spare in the box×1
Trans-Orange
1 piece
Cone 1 x 1 [Top Groove]Trans-OrangePart 59900Element 6514017 or 6172233×1
Yellow
1 piece
Technic Axle 3YellowPart 4519Element 6130007×1
Minifigures
4 figures
MiraMinifigure, checked as a whole figure×1
Oni WarriorMinifigure, checked as a whole figure×1
JinMinifigure, checked as a whole figure×1
Master IvoMinifigure, 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.
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.