MASTERPIECE Challenge Kit (45823-1) is a FIRST LEGO League LEGO set released in 2023 with 1,756 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing FIRST LEGO League sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 21 minifigures and 442 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2023
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Catalog scale
1,756 parts listed · 442 inventory lines tracked
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Minifigures
21 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Build complexity
Large set — expect sticker sheets or multiple subassemblies; inspect photos closely
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Shipping weight (est.)
~3,181 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
Related sets in this theme
Market value
No estimate on BrickID yet
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Minifigures in MASTERPIECE Challenge Kit
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Green Torso, Lime Legs, Dark Red Hair, Scarf×1 -
Dark Turquoise Torso, Medium Azure Legs, Red Hair×1 -
Kid - Dark Turquoise Torso, Medium Lavender Legs, Bright Light Orange Helmet, Black Hair×1 -
Bright Light Orange Torso, Dark Red Legs, Dark Brown Hair×1 -
Dark Blue Torso, Magenta Legs, Light Bluish Grey Hair×1 -
Monochrome Bright Green×1 -
Monochrome Bright Light Blue×1 -
Monochrome Black, Hat×1 -
Monochrome Reddish Brown×1 -
Monochrome White, Tutu×1 -
Monochrome Dark Purple×1 -
Monochrome Dark Pink×1 -
Monochrome Red, 28621 Head×1 -
Monochrome Orange, 28621 Head×7 -
Monochrome Blue×1
Parts in this set
442 parts · page 1 of 10 · updating…
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Animal Body Part, Horn (Cattle) / Tentacle / Vine / Branch / Tongue - Long13564 · ×1 · Dark Bluish Gray -
Animal, Frog33320 · ×1 · Coral -
Animal, Frog33320 · ×1 · Bright Pink -
Bar 3L87994 · ×1 · Black -
![Bar 8L - Two Stop Rings / One Pin, Technic Figure Ski Pole [Flat End]](https://cdn.rebrickable.com/media/parts/ldraw/0/2714b.png)
Bar 8L - Two Stop Rings / One Pin, Technic Figure Ski Pole [Flat End]2714b · ×2 · Black -
Bar, Ring 7L Diameter, with 2 Axle Connectors79851 · ×6 · Orange -
Bracket 1 x 1 - 1 x 136841 · ×2 · Black -
Bracket 1 x 1 - 1 x 1 Inverted36840 · ×2 · Lime -
Bracket 1 x 2 - 1 x 299781 · ×1 · Yellow -
Bracket 1 x 2 - 1 x 299781 · ×1 · Bright Light Yellow -
Brick 1 x 13005 · ×1 · Bright Light Orange -
Brick 1 x 13005 · ×1 · Bright Light Yellow -
Brick 1 x 1 x 314716 · ×4 · White -
Brick 1 x 2 without Bottom Tube3065 · ×1 · Trans-Clear -
Brick 1 x 2 x 2 with Inside Stud Holder3245c · ×4 · Blue -
Brick 1 x 2 x 2 with Inside Stud Holder3245c · ×2 · White -
Brick 1 x 43010 · ×4 · Blue -
Brick 1 x 43010 · ×2 · White -
Brick 2 x 23003 · ×6 · White -
Brick 2 x 2 without Inside Ridges6223 · ×2 · Trans-Dark Blue -
Brick 2 x 2 x 330145 · ×1 · White -
Brick and Axle Separator v2.096874 · ×1 · Dark Turquoise -
Brick Arch 1 1/2 x 1 1/2 Corner38585 · ×2 · White -
Brick Arch 1 x 3 x 2 Curved Top6005 · ×1 · Yellow -
Brick Arch 1 x 3 x 2 Curved Top6005 · ×1 · Bright Light Orange -
Brick Arch 1 x 4 x 26182 · ×2 · White -
Brick Curved 1 x 2 x 1 1/3 with Curved Top6091 · ×1 · Medium Lavender -
Brick Curved 1 x 2 x 1 1/3 with Curved Top6091 · ×1 · Dark Purple -
![Brick Curved 1 x 3 x 2 Inverted [Inside Bow]](https://cdn.rebrickable.com/media/parts/elements/6110019.jpg)
Brick Curved 1 x 3 x 2 Inverted [Inside Bow]18653 · ×2 · White -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6147726.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×1 · Bright Light Yellow -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6047426.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×2 · Green -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6099728.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×1 · Bright Light Orange -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6047276.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×1 · Black -
Brick Curved 2 x 2 x 2/315068 · ×3 · Green -
Brick Curved 2 x 2 x 2/315068 · ×1 · Medium Azure -
Brick Curved 2 x 2 x 2/315068 · ×1 · Light Aqua -
Brick Curved 4 x 1 Double with No Studs93273 · ×1 · Red -
Brick Curved 4 x 1 Double with No Studs93273 · ×1 · Dark Red -
Brick Curved Inverted 2 x 2 x 2/332803 · ×6 · White -
Brick Curved Inverted 2 x 2 x 2/332803 · ×6 · Black -
Brick Curved Inverted 2 x 2 x 2/332803 · ×1 · Bright Green -
Brick Round 1 x 1 Open Stud3062b · ×1 · Bright Green -
Brick Round 1 x 1 Open Stud3062b · ×1 · Dark Turquoise -
![Brick Round 2 x 2 Sphere with Stud [Plain]](https://cdn.rebrickable.com/media/parts/elements/6221773.jpg)
Brick Round 2 x 2 Sphere with Stud [Plain]20953 · ×1 · White -
Brick Round 2 x 2 Truncated Cone98100 · ×2 · White -
Brick Round 2 x 2 with Axle Hole3941 · ×7 · White -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · Lavender -
Brick Round 2 x 2 with Axle Hole3941 · ×1 · Black