# Season 1 Challenge #1 is DONE | Parametric Sketching 1/5
**URL:** https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133
**Category:** Season 1 - Parametric Sketching
**Created:** [June 29, 2026, 1:39pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133 "2026-06-29T13:39:43Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@Ambrus](https://discourse.shapr3d.com/u/Ambrus)
#### Post date: [June 29, 2026, 1:39pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/1 "2026-06-29T13:39:44Z")
**The task**
Create a parametric model of a triquetra. The model must be controlled by two independent driving parameters (variables). By modifying these two driving parameters, the model must transition from State A to State B without breaking constraints, inverting, or producing errors.
Fixed Dimensions: A
Driving Parameters: B and C
Driven Dimensions: The dependent arcs, tangencies, and construction geometry required to maintain the interlocking shape.
IMPORTANT RULE: Design history tree should only contain Sketches and Extrusions. The use of any other features will result in an invalid submission.
Submit your CAD file through this [link](https://forms.gle/U4GJTcL7ZHg8LjP1A) by **the end of the week on Sunday.**
**Your results are going to be shown on the leaderboard after the submissions are evaluated.**
**Scoring reminder**
- Complete the challenge → earn 10 completion point
- Complete the challenge successfully → earn 6 success points
- First 5 people to submit gets → 5-4-3-2-1 points
- Stay consistent across the challenge → after 3 participations you get 3 extra points, after all 5 participations you get additional 10 points
Good luck. If you get stuck, ask here. The only rule is don’t share your solution until the end of the challenge.
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### Author:  [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)
#### Post date: [June 29, 2026, 2:58pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/2 "2026-06-29T14:58:46Z")
What does A variable represent?
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### Author:  [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)
#### Post date: [June 29, 2026, 3:18pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/3 "2026-06-29T15:18:25Z")
Looks like it’s the thickness of the extruded sketch.
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### Author:  [@Dalibor](https://discourse.shapr3d.com/u/Dalibor)
#### Post date: [June 29, 2026, 3:22pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/4 "2026-06-29T15:22:13Z")
Dimension A represents the non-variable vertical dimension of the model.
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### Author:  [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)
#### Post date: [June 29, 2026, 8:40pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/5 "2026-06-29T20:40:50Z")
I barely ever model with variables (to my shame), so this was a fun little refresher on how to use them! Thanks Shapr team, these challenges are a great idea!
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### Author:  [@Fawksey3D](https://discourse.shapr3d.com/u/Fawksey3D)
#### Post date: [July 1, 2026, 3:17pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/6 "2026-07-01T15:17:55Z")
Had a go. I don’t typically model on the basis of parametric dependencies. But it did give my brain a bit of a work out which was good.
Sorry. Removed the screen shot. Didn’t see the requirement not to share.
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### Author:  [@Ambrus](https://discourse.shapr3d.com/u/Ambrus)
#### Post date: [July 2, 2026, 10:48am UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/7 "2026-07-02T10:48:22Z")
Submission deadline is Sunday. There is still plenty of time to participate!
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### Author:  [@Dalibor](https://discourse.shapr3d.com/u/Dalibor)
#### Post date: [July 6, 2026, 12:50pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/8 "2026-07-06T12:50:28Z")
### That’s a wrap on Challenge #1.
Huge thanks to everyone who submitted. The response to Week 1 was fantastic and sets a great tone for the rest of the season.
Before we get to the scores, here’s the solution:
[ ](https://www.youtube.com/watch?v=HHeFOOWUuUE)
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### Author:  [@Ambrus](https://discourse.shapr3d.com/u/Ambrus)
#### Post date: [July 6, 2026, 12:53pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/9 "2026-07-06T12:53:57Z")
And this is how the top 5 looks like on the leaderboard after the first round:
> [@Leaderboard - Parametric Sketching](https://discourse.shapr3d.com/t/leaderboard-parametric-sketching/41184):
>
> Here are the results after the first week: 1st @Xdrakosha - 21 points 2nd @bidek - 20 points 3rd jhelgert - 19 points 4th @DrKronos - 18 points 5th Mark Watson - 17 points The leaderboard can change rapidly, speed and consistency makes the most points! As a reminder: Complete the challenge → earn 10 completion point Complete the challenge successfully → earn 6 success points First 5 people to submit gets → 5-4-3-2-1 points Stay consistent across the challenge → after 3 participations …
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### Author:  [@Ambrus](https://discourse.shapr3d.com/u/Ambrus)
#### Post date: [July 6, 2026, 1:01pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/10 "2026-07-06T13:01:47Z")
You can find the next week’s challenge here: [Season 1 Challenge #2 is live | Parametric Sketching 2/5](https://discourse.shapr3d.com/t/season-1-challenge-2-is-live-parametric-sketching-2-5/41185)
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### Author:  [@BulldogBen](https://discourse.shapr3d.com/u/BulldogBen)
#### Post date: [September 2, 2026, 3:24pm UTC](https://discourse.shapr3d.com/t/season-1-challenge-1-is-done-parametric-sketching-1-5/41133/11 "2026-09-02T15:24:41Z")
Loving these challenges, I’m going back and catching-up now. Thanks for putting this together,