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Tanya Khovanova

Personal blog · blog.tanyakhovanova.commathgames

Tanya Khovanova's personal blog at blog.tanyakhovanova.com covers math and games. Since 2009, 34 different Hacker News readers have linked it 54 times, most often “Should You Date a Mathematician?”. It is still writing: the last post was on 2026-10-21, and you can follow it by feed.

Visit the blog
54mentions?
5recommend?
34HN people?
2009–2025first – last linked?
Links on Hacker News per year · peak 8 in 2016

Too few sampled comments (23) to say how often HN recommends it.?

Why HN links it

HN readers link Tanya Khovanova's blog for maths explanations, such as the Tuesday boy problem, divisibility by 7 and the four colour theorem, plus a post on IQ and Mensa.

Recommended for · 5 comments
Called easier to read on the Tuesday boy problem, 'much better' on divisibility by 7, and 'mind-blowing' results on four colour.

Summarised by Claude from a sample of 23 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

Most-linked posts?

  1. Should You Date a Mathematician?
    3 people · 3 mentions · first linked 2011-04-24
  2. A Nerd’s Way to Walk Up the Stairs (2011)
    2 people · 9 mentions · first linked 2015-07-29
  3. Foams Made Out of Felt
    2 people · 3 mentions · first linked 2024-12-01
  4. /?p=277
    2 people · 2 mentions · first linked 2013-04-10
  5. /?p=221
    2 people · 2 mentions · first linked 2011-11-29
  6. Hiring the Smartest People in the World
    2 people · 2 mentions · first linked 2012-05-02
  7. /
    2 people · 2 mentions · first linked 2012-07-13

What Hacker News says?

  1. https://blog.tanyakhovanova.com/2008/08/why-are-manhole-cove...

    Comment linking /2008/08/why-are-manhole-covers-square/

    on “Learning to program is getting harder”
  2. Submitted My IQ as a story · 392 points

    HN discussion
  3. http://blog.tanyakhovanova.com/ http://blog.kenperlin.com/ http://blog.vixra.org/ http://www.nature.com/ http://research.microsoft.com/en-us/groups/science/publicati... http://research.google.com/pubs/papers.html http://www.scottaaronson.com/blog/ http://lwn.net/ http://www.cs.utexas.edu/~EWD/transcriptions/transcriptions.... http://c2.com/cgi/wiki if you're into seeing how the Elders thought about computing http://…

    Comment linking /

    on “What are the most intellectually stimulating websites you know of?”
  4. Submitted Divisibility by 7 is a Walk on a Graph (2009) as a story · 335 points

    HN discussion
  5. AFTER EDIT: Thanks to all who have replied for the interesting comments. I discovered this link while digesting replies I received on three different email lists to a request to name experts on mathematically precocious young people. (That was for work.) Tanya Khovanova, the author of the blog post submitted here, was one name suggested to me as an expert on precocious mathematics learners. When I saw her personal w…

    Comment linking /?p=319

    on “My IQ”
  6. Submitted The Dying Art of Mental Math Tricks as a story · 198 points

    HN discussion
  7. I loved the puzzle books, even though I wasn't very good at the puzzles. The titbit about his wife is this story ( https://magazine.uchicago.edu/9506/June95BOBProfiles.html , NYT left out the actual puzzle) > Smullyan admits the following puzzle might have come in handy had he designed it before meeting his wife. > "I'll make a statement. If the statement is true, you give me your autograph. It doesn't have to be on…

    Comment linking /2010/05/raymond-smullyans-magic-trick/

    on “Raymond Smullyan has died”
  8. Submitted A Nerd’s Way to Walk Up the Stairs (2011) as a story · 139 points

    HN discussion
  9. For a bit of an explanation, see David's follow-up blog post: http://blog.tanyakhovanova.com/2010/08/divisibility-by-7-is-...

    Comment linking /2010/08/divisibility-by-7-is-a-walk-on-a-graph-ii-2/

    on “Divisibility by 7 is a Walk on a Graph (2009)”
  10. Submitted Divisibility by 7 is a Walk on a Graph - how does it work? as a story · 63 points

    HN discussion
  11. Tanya Khovanova on IQ and MENSA: https://blog.tanyakhovanova.com/2008/12/my-iq/

    Comment linking /2008/12/my-iq/

    on “IQ is largely a pseudoscientific swindle”
  12. Submitted The odd one out - inspired by IQ tests as a story · 57 points

    HN discussion
  13. Here's somebody with intelligence clearly above average making the same point: https://blog.tanyakhovanova.com/2008/12/my-iq/

    Comment linking /2008/12/my-iq/

    on “IQ is largely a pseudoscientific swindle”
  14. Submitted Hiring the Smartest People in the World as a story · 50 points

    HN discussion
  15. Mind-blowing result from a different attempt to prove four color theorem https://blog.tanyakhovanova.com/2024/11/foams-made-out-of-fe...

    Comment linking /2024/11/foams-made-out-of-felt/

    on “The cultural divide between mathematics and AI”
  16. Submitted Should you date a mathematician? as a story · 22 points

    HN discussion
  17. Fwiw fairly recently posted to HN was progress towards a more satisfying (read, likely mind-blowing) proof: https://blog.tanyakhovanova.com/2024/11/foams-made-out-of-fe... This is also nice because only pre-1600 tech involved

    Comment linking /2024/11/foams-made-out-of-felt/

    on “The cultural divide between mathematics and AI”
  18. Submitted Foams Made Out of Felt as a story · 19 points

    HN discussion
  19. A similar example was highlighted on BB the other day, with an interesting twist about cognitive bind-spots leading to security holes: http://blog.tanyakhovanova.com/?p=277 http://www.schneier.com/blog/archives/2013/04/nice_security_...

    Comment linking /?p=277

    on “A non-mathematical explanation of one way functions”
  20. Submitted A Nerd’s Way to Walk Up the Stairs (2011) as a story · 12 points

    HN discussion
  21. Never interviewed at Facebook but have been offered roles at similarly hard to get places. Though I am working at my own startup now, the absurdness of the interviewing process at majority of such places confounds me. In short, I can't cope up with them well without going through quite a few glassdoor type questions of that respective company. And partially it is because most interviewers already have a set of solut…

    Comment linking /?p=402

    on “Get that job at Facebook (2012)”
  22. Submitted The Battle I am Losing as a story · 5 points

    HN discussion
  23. This reminds me of an interesting puzzle about horsemen riding around a circular track: https://blog.tanyakhovanova.com/2011/03/the-horsemen-sequenc...

    Comment linking /2011/03/the-horsemen-sequences/

    on “The lonely runner conjecture”
  24. Submitted A Nerd’s Way to Walk Up the Stairs (2011) as a story · 3 points

    HN discussion
  25. I was curious as well and googled it ("counting stairs conway") and found this: http://blog.tanyakhovanova.com/2011/06/a-nerds-way-to-walk-u... > His invention is simple. Your steps should be in a cycle: short, long, long. Long in this case means a double step. Thus, you will cover five stairs in one short-long-long cycle. In addition, you should always start the first cycle on the same foot. Suppose you start on th…

    Comment linking /2011/06/a-nerds-way-to-walk-up-the-stairs/

    on “John Conway – The world’s most charismatic mathematician”
  26. Submitted Industry vs Academia as a story · 3 points

    HN discussion
  27. Real link: http://blog.tanyakhovanova.com/?p=277

    Comment linking /?p=277

    on “Nice Security Mindset Example”
  28. Submitted A Nerd’s Way to Walk Up the Stairs (2011) as a story · 2 points

    HN discussion
  29. Okay. To respond to both of you - I have put this in programming just to check, and I think you are taking a different inference from the question than I am. Under your inference, the man wouldnt have mentioned anything unless he had at least one male child. (in which case you can say the GG scenario is gone, but GB BG and BB are equally probable) Under my inference, the man just told me the sex of one child at rand…

    Comment linking /?p=221

    on “Think you understand Monty Hall? Try the Tuesday boy problem.”
  30. Submitted A Nerd’s Way to Walk Up the Stairs (2011) as a story · 2 points

    HN discussion

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