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.
1,398 pieces in 358 part and color combinations, plus 1 minifigure.
The official piece count includes the 5 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.
Brick 1 x 2Reddish Brown ×2Dark Brown ×4Reddish Brown is redder and lighter than Dark Brown.
Brick Curved 2 x 1 No Studs [1/2 Bow]Reddish Brown ×8Dark Brown ×5Reddish Brown is redder and lighter than Dark Brown.
Plate 1 x 2Reddish Brown ×11Dark Brown ×11Reddish Brown is redder and lighter than Dark Brown.
Wedge Plate 3 x 2 LeftReddish Brown ×2Dark Brown ×1Reddish Brown is redder and lighter than Dark Brown.
Wedge Plate 3 x 2 RightReddish Brown ×2Dark Brown ×1Reddish Brown is redder and lighter than Dark Brown.
Brick 2 x 2Tan ×2Dark Tan ×7Tan is lighter than Dark Tan.
12 more look-alike pairs
Brick Curved 3 x 1 No StudsTan ×4Dark Tan ×11Tan is lighter than Dark Tan.
Brick Sloped 30° 1 x 2 x 2/3Tan ×2Dark Tan ×2Tan is lighter than Dark Tan.
Brick Special 1 x 1 with Stud on 1 SideTan ×6Dark Tan ×3Tan is lighter than Dark Tan.
Brick Wedged, Curved 2 x 1 with Stud Notch LeftTan ×3Dark Tan ×1Tan is lighter than Dark Tan.
Plate 1 x 1Tan ×9Dark Tan ×1Tan is lighter than Dark Tan.
Plate 1 x 2Tan ×16Dark Tan ×13Tan is lighter than Dark Tan.
Plate 2 x 2Tan ×4Dark Tan ×14Tan is lighter than Dark Tan.
Plate 2 x 4Tan ×2Dark Tan ×4Tan is lighter than Dark Tan.
Tile 1 x 2 with GrooveTan ×5Dark Tan ×1Tan is lighter than Dark Tan.
Wedge Plate 2 x 2 LeftTan ×5Dark Tan ×3Tan is lighter than Dark Tan.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Black ×8Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
LEGO's request form asks for the set number (72423) and each piece's element ID, both listed above.
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Clear every mark for this set?
Piece checklist
Light Bluish Gray
269 pieces
Bar Holder with Hole and Bar HandleLight Bluish GrayPart 23443Element 6343976 or 6152107×1
Bracket 1 x 2 - 1 x 2 InvertedLight Bluish GrayPart 99780Element 6004990×2
Bracket 1 x 2 - 2 x 2 InvertedLight Bluish GrayPart 99207Element 4654580×6
Brick 1 x 1Light Bluish GrayPart 3005Element 4211389×3
Brick 2 x 2Light Bluish GrayPart 3003Element 4211387×3
Brick Curved 1 x 2 x 1 2/3 with 1 CutoutLight Bluish GrayPart 5907Element 6548933×2
Brick Curved 1 x 2 x 1 with Curved TopLight Bluish GrayPart 5841Element 6539831×4
Brick Curved 2 x 1 No Studs [1/2 Bow]Light Bluish GrayPart 11477Element 6028813×19
Brick Curved 2 x 2 x 2/3Light Bluish GrayPart 15068Element 6102357×11
Brick Curved 2 x 2, Two Top StudsLight Bluish GrayPart 30165Element 6150310 or 4182477×3
Brick Curved 4 x 2 No StudsLight Bluish GrayPart 93606Element 4622742×1
Brick Curved Inverted 2 x 1Light Bluish GrayPart 24201Element 6144138×8
Brick Curved Inverted 2 x 2 x 2/3Light Bluish GrayPart 32803Element 6185676×1
Brick Curved Inverted 4 x 1Light Bluish GrayPart 13547Element 6132872×4
Brick Round Corner, Curved 2 x 2 x 2/3 Quarter Circle With 1 x 1 Bottom CutoutLight Bluish GrayPart 5852Element 6529502×18
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Light Bluish GrayPart 54200Element 4521921 or 42443721 spare in the box×8
Brick Sloped 30° 1 x 2 x 2/3Light Bluish GrayPart 85984Element 4568637×5
Brick Special 1 x 1 with Clip HorizontalLight Bluish GrayPart 60476Element 6320306 or 4535764×2
Brick Special 1 x 1 with Studs on 2 Adjacent SidesLight Bluish GrayPart 26604Element 6267495×10
Brick Special 1 x 2 with 2 Studs on 1 SideLight Bluish GrayPart 11211Element 6015344×3
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideLight Bluish GrayPart 22885Element 6123809×2
Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 SidesLight Bluish GrayPart 67329Element 6301870×4
Brick Wedged, Curved 2 x 1 with Stud Notch LeftLight Bluish GrayPart 29120Element 6225139×7
Brick Wedged, Curved 2 x 1 with Stud Notch RightLight Bluish GrayPart 29119Element 6225142×7
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
1 figure
Puss in BootsMinifigure, 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.