mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

Christmas (2020) is coming!

 2020-11-22 
This year, the front page of mscroggs.co.uk will once again feature an Advent calendar, just like in the five previous Decembers. Behind each door, there will be a puzzle with a three digit solution. The solution to each day's puzzle forms part of a logic puzzle:
It's nearly Christmas and something terrible has happened: you've just landed in a town in the Arctic circle with a massive bag of letters for Santa, but you've lost to instructions for how to get to Santa's house near the north pole. You need to work out where he lives and deliver the letters to him before Christmas is ruined for everyone.
Due to magnetic compasses being hard to use near the north pole, you brought with you a special Advent compass. This compass has nine numbered directions. Santa has given the residents of the town clues about a sequence of directions that will lead to his house; but in order to keep his location secret from present thieves, he gave each resident two clues: one clue is true, and one clue is false.
The residents' clues will reveal to you a seqeunce of compass directions to follow. You can try out your sequences on this map.
Behind each day (except Christmas Day), there is a puzzle with a three-digit answer. Each of these answers forms part of a resident's clue. You must use these clues to work out how to find Santa's house.
Ten randomly selected people who solve all the puzzles, find Santa's house, and fill in the entry form behind the door on the 25th will win prizes!
The winners will be randomly chosen from all those who submit the entry form before the end of 2020. Each day's puzzle (and the entry form on Christmas Day) will be available from 5:00am GMT. But as the winners will be selected randomly, there's no need to get up at 5am on Christmas Day to enter!
As you solve the puzzles, your answers will be stored. To share your stored answers between multiple devices, enter your email address below the calendar and you will be emailed a magic link to visit on your other devices.
To win a prize, you must submit your entry before the end of 2020. Only one entry will be accepted per person. If you have any questions, ask them in the comments below or on Twitter.
So once December is here, get solving! Good luck and have a very merry Christmas!

Similar posts

Christmas (2020) is over
Christmas (2019) is over
Christmas (2019) is coming!
Christmas (2018) is over

Comments

Comments in green were written by me. Comments in blue were not written by me.
Nice one today (16 December) :)
Did he?... did he really?... starts to look like it... yes he did! :D
Gert-Jan
×3   ×6   ×3   ×1   ×2     Reply
@A: Aha, I should have thought of this! Puzzles completed :-)
(anonymous)
×1                 Reply
@Dean: you can also go through each answer one at a time and change a digit; if the number of wrong answers goes up then your answer for that question was correct
A
×1   ×1              Reply
@Dean: Yes, I'm planning to change how that bit works. Check back tomorrow or the next day for a more fun finish!
Matthew
   ×1              Reply
A bit harsh that we can’t tell exactly which answers are wrong! I won’t have time to revisit every puzzle - and its kind of less fun redoing something that is already correct... :-(
Dean
                 Reply
@Marty: Yes, I'm in the middle of correcting the clues page to add these details back
Matthew
   ×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 "factor" 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

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

Archive

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