Could you guys post links to the hardest problem you have ever encountered on Brilliant? That way users who are hunting for difficult problems can solve them and boost their rating. Please do not post answers.

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TopNewestHi Finn,

I thought this problem was breathtakingly beautiful in it's simplicity.

I'll ask around the office and see if we can dig up a historically absurdly difficult problem for you to look at. – Peter Taylor Staff · 3 years, 6 months ago

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– Namita Lohani · 3 years, 5 months ago

This is really a nice problem.I couldn't take up the courage 2 write d correct answer as i was nt sure 4 it.Log in to reply

– Soham Dibyachintan · 3 years, 6 months ago

This probl em is truly mesmerizing.Log in to reply

– Finn Hulse · 3 years, 6 months ago

Try this one out: https://brilliant.org/community-problem/an-interesting-problem-264/?group=iiMQMGYWAfX2Log in to reply

– Soham Dibyachintan · 3 years, 5 months ago

Cool.Log in to reply

– Pranav Arora · 3 years, 6 months ago

This....is.....HILARIOUS!!! :DLog in to reply

– Yan Yau Cheng · 3 years, 6 months ago

I Love this problem, took me so long to get the courage to type in the answerLog in to reply

pretty well right here. – Peter Taylor Staff · 3 years, 6 months ago

Yeah, Ryan sums it upLog in to reply

– Finn Hulse · 3 years, 6 months ago

Yeah that one was crazy hard... I mean seriously! That took me forever! ;)Log in to reply

– Finn Hulse · 3 years, 6 months ago

Thanks!Log in to reply

We are pretty sure this is the hardest algebra problem on Brilliant. Could be wrong though, ratings are a dynamic thing.

Edit: I bungled the link the first time it should work now. – Peter Taylor Staff · 3 years, 6 months ago

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– William Cui · 3 years, 6 months ago

Wow a problem with over 3000 rating O.oLog in to reply

– 敬全 钟 · 3 years, 5 months ago

That's right, I kneel down when I see this problem...Log in to reply

– Ahaan Rungta · 3 years, 6 months ago

Holy moly. \Tries to solveLog in to reply

Personally thought this algebra problem was particularly difficult :P – Katie Gardner · 3 years, 5 months ago

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Maybe hard. https://brilliant.org/community-problem/strokes/?group=HdtDpoEPM9Zd&ref_id=88876 – Lee Care Gene · 3 years, 6 months ago

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(-1)^π

Hardest problem... – Beyond Imagination · 2 years, 2 months ago

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Knock yourself out:

You won't do it.

Noone's done it.

You might do it. – John Muradeli · 2 years, 10 months ago

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There was a number theory before the site was revamped, one that dealt with remainders modulus 19 and included three variables (unknowns, k,a,b based on certain restrictions though). The only answer I saw for that question had an incomplete proof, so that should be sufficient evidence for its difficulty. If anybody here is able to find it... – Jared Low · 3 years, 5 months ago

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Can someone post the hardest Combinatorics problem they've come across? – José Marín Guzmán · 3 years, 6 months ago

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I don't think this is the hardest combinatorics problem on Brilliant, but this one is relatively recent and rated quite high. – Peter Taylor Staff · 3 years, 5 months ago

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Also, just for fun, you can post a ridiculously easy problem. – Finn Hulse · 3 years, 6 months ago

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There you go , my friend!! :D – Panchu Patel · 3 years, 6 months ago

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