mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

 2019-11-24 

Christmas (2019) is coming!

Showing all comments about the post Christmas (2019) is coming!. To return to the blog post, click here.

Comments

Comments in green were written by me. Comments in blue were not written by me.
Thank you, I was worried. Thanks also for the puzzles, makes a change from my usual sudokus. I especially liked 3, 9, 11, 16, 21 and 23.
(anonymous)
                 Reply
@(anonymous): You don't get a confirmation email but if you hit submit you'll be entered. (I'll add confirmation emails before next year...)
Matthew
                 Reply
Do we get a confirmation email after submission of the entry form? I never received one, so I'm not sure if I am entered.
(anonymous)
                 Reply
Thanks for the nice puzzles!
Gert-Jan
                 Reply
@Seth: If you find them on the map then that's all you need to do. (And if you didn't find them yet then the entry form won't appear so you definably did everything you need to do.)
Matthew
                 Reply
In the form today, there was nowhere to input the three locations -- just my name/email/etc. I found all three, though, and the page says so. Do you have it set up so the form only appears for those who found all three? Or is there something else I need to do?
Seth
                 Reply
@Emily:
Saw your earlier comment, nevermind!
Emily
                 Reply
If one of the inhabitants lies about a clue, does that mean they will lie about all of their clues?
Emily
                 Reply
@Matthew: There was a mistake: I'd written the rows in the wrong order. I've now corrected it.
Matthew
                 Reply
For Day 23, I assume the 3-digit numbers are read top to bottom and left to right?

So the bottom right corner must be odd (the ones digit of an odd number) and it must be even (the ones digit of a multiple of 4)? Isn't that a contradiction if I'm understanding the problem correctly?
Dan
                 Reply
@Reza: Yes, that information will appear below the Advent calendar on Christmas Eve.
Matthew
                 Reply
Is it possible to send answers for checking on the website like last year, to find out how many are correct?
Reza
                 Reply
Too bad there's not a prize for finding everyone early...
Seth
                 Reply
This search space is so large, it's way harder than trying to find Wally like in the children's books. Best to read everything carefully looking for any clues, and then solve all the puzzles and logic before searching randomly!
Did you know Wally is called Waldo in the US, Walter in Germany, and Charlie in France?
Dr. Matrix
×3   ×1              Reply
@(anonymous): Yes. Every islander will either always tell the truth or always lie.
Matthew
                 Reply
@Matthew: If an inhabitant is a liar, do they always lie?
(anonymous)
                 Reply
@Jonathan: Yes, they could all be lying. But one might contradict another at some point to make this impossible...
Matthew
                 Reply
Is it correct that the rules allow for all four inhabitants to be lying about everything?
Jonathan
                 Reply
No, this means the islander comes from Rum, this island that I am denoting by red... This will hopefully become less confusing once the blue and orange islanders have spoken.
Matthew
                 Reply
Does a red box mean my answer is wrong? Is it one of the islanders trying to mislead me?
Kyle
                 Reply
 Add a Comment 


I will only use your email address to reply to your comment (if a reply is needed).

Allowed HTML tags: <br> <a> <small> <b> <i> <s> <sup> <sub> <u> <spoiler> <ul> <ol> <li>
To prove you are not a spam bot, please type "tcesib" backwards in the box below (case sensitive):

Archive

Show me a random blog post
 2020 

Jul 2020

Happy τ√2-6 Approximation Day!

May 2020

A surprising fact about quadrilaterals
Interesting tautologies

Mar 2020

Log-scaled axes

Feb 2020

PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2

Jan 2020

PhD thesis, chapter 1
Gaussian elimination
Matrix multiplication
Christmas (2019) is over
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

tennis world cup frobel geogebra matrix of cofactors propositional calculus draughts weak imposition mathslogicbot dates logic bubble bobble electromagnetic field ucl preconditioning logs machine learning exponential growth sorting dataset squares rugby game of life misleading statistics manchester curvature radio 4 dragon curves stickers speed martin gardner quadrilaterals royal baby phd error bars weather station cambridge programming a gamut of games raspberry pi approximation data probability data visualisation talking maths in public gerry anderson statistics folding tube maps computational complexity ternary asteroids hannah fry inverse matrices latex matrices menace finite element method golden spiral hexapawn pythagoras oeis triangles flexagons news determinants craft sport realhats go sobolev spaces polynomials matrix multiplication games chess football london plastic ratio big internet math-off advent calendar twitter european cup noughts and crosses convergence simultaneous equations game show probability golden ratio arithmetic national lottery fractals nine men's morris palindromes graphs wool numerical analysis boundary element methods video games folding paper wave scattering graph theory estimation geometry trigonometry signorini conditions hats the aperiodical rhombicuboctahedron pac-man christmas bempp php tmip manchester science festival javascript platonic solids reuleaux polygons binary final fantasy mathsteroids pi braiding light gaussian elimination bodmas harriss spiral books captain scarlet london underground people maths pizza cutting inline code reddit python pi approximation day chalkdust magazine coins chebyshev accuracy matt parker matrix of minors interpolation map projections countdown sound royal institution christmas card mathsjam cross stitch puzzles

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2020