How many pieces does the LEGO UNEARTHED Challenge Set (45829-1) have?

The LEGO UNEARTHED Challenge Set set (45829-1) contains 1742 pieces. It was released in 2025 as part of the LEGO FIRST LEGO League theme.

How can I find missing parts for LEGO set 45829-1?

On BrickMissing you can check which parts from the LEGO UNEARTHED Challenge Set (45829-1) you already own. Add your LEGO collection and we'll show exactly which of the 1742 pieces you're missing and which you already have.

Can I build the LEGO UNEARTHED Challenge Set with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 1742 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO UNEARTHED Challenge Set from?

The LEGO UNEARTHED Challenge Set (45829-1) belongs to the LEGO FIRST LEGO League theme. You can browse all FIRST LEGO League sets on BrickMissing to find more sets from this theme.

UNEARTHED Challenge Set

45829-1 FIRST LEGO League 2025 1742 parts 2.1% repair risk Expert

UNEARTHED Challenge Set (45829-1) is a LEGO FIRST LEGO League from 2025. The set contains 1,742 parts across 12 part and colour combinations in 4 colours — the full inventory below shows exactly which pieces you need to build or complete it.

Parts Inventory

🧱 1742 parts

Part	Color	Qty	LEGO price each
Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] 10247	Light Bluish Gray	8×	€0,10 View at LEGO → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Tan	2×	€0,13 View at LEGO → View
Plate 3 x 3 11212	Tan	2×	€0,12 View at LEGO → View
Plate Round 6 x 6 with Hole 11213	Light Bluish Gray	2×	€0,41 View at LEGO → View
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214	Dark Bluish Gray	10×	€0,29 View at LEGO → View
Tile Round 1 x 2 1126	Tan	2×	€0,13 View at LEGO → View
Technic Pin Connector Perpendicular 2 x 4 Bent - Beam with 90 Hole Ø 4.8 11455	Black	2×	€0,29 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Light Bluish Gray	1×	€0,06 View at LEGO → View
Plate Round 4 x 4 with 2 x 2 Round Opening 11833	Black	1×	€0,27 View at LEGO → View
Technic Panel Fairing #22 5L Small Smooth, Side A 11947	Light Bluish Gray	2×	€0,38 View at LEGO → View
Wedge Sloped 45° 2 x 2 Corner 13548	Dark Bluish Gray	2×	€0,13 View at LEGO → View
String with End Studs 31L Overall 14226c31	Black	1×	€3,00 View at LEGO → View

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Repairability

Can you fix UNEARTHED Challenge Set if a piece goes missing?

2.1%Low repair risk

easy to fixguard this box

10 of the 480 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

14.4%

All sets

6.7%

Hardest to replace

Slope Curved 4 x 4 x 2/3 Triple Curved · White · only this setFirst LEGO League Mat, Unearthed · Unknown · only this setTechnic Panel Curved and Bent 6 x 3 · Lime · 2 sets everBuy at LEGO ↗

How we calculate this →