mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

Christmas card 2020

 2020-12-03 
In November, I spent some time designing this year's Chalkdust puzzle Christmas card.
The card looks boring at first glance, but contains 9 puzzles. By splitting the answers into two digit numbers, then colouring the regions labelled with each number (eg if an answer to a question in the red section is 201304, colour the regions labelled 20, 13 and 4 red), you will reveal a Christmas themed picture.
If you want to try the card yourself, you can download this pdf. Alternatively, you can find the puzzles below and type the answers in the boxes. The answers will be automatically be split into two digit numbers, and the regions will be coloured...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

Similar posts

Christmas card 2019
Christmas card 2018
Christmas card 2017
Christmas card 2016

Comments

Comments in green were written by me. Comments in blue were not written by me.
@JDev: lots of the card will still be brown once you're done, but you should see a nice picture. Perhaps one of your answers is wrong, making a mess of the picture?
Matthew
                 Reply
I finished all of the puzzles but the picture is far from colored in. Am I missing something?

These puzzles have been a blast!
JDev
                 Reply
Thanks a lot, Matthew. It was great fun!
Gert-Jan
×1                 Reply
@Tara: I initially made the same mistake. Maybe you didn't take into account that 6 is not one of the available digits in question 1?
Sean
×1   ×2              Reply
@Tara: Yes, looks like you may have got an incorrect answer for one of the black puzzles
Matthew
×1   ×2   ×1   ×1   ×1     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 "cosine" in the box below (case sensitive):

Archive

Show me a random blog post
 2021 

Jan 2021

Christmas (2020) is over
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

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

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2021