mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

Christmas (2015) is over

 2016-01-01 
The deadline for entering the 2015 Advent calendar competition has now passed. You can see all the puzzles and their answers here.
Thank-you to everyone who took part in the competition! In total, 23 people submitted answers to the puzzles. Every one of these had correct answers to at least 18 of the puzzles. The winners are as follows:
#NameDetails
1ScottAll correct at 5:00:18 GMT on Christmas Day
2Louis de MendoncaAll correct at 5:00:32 GMT on Christmas Day
3Alex BoltonAll correct at 5:00:34 GMT on Christmas Day
4Martin HarrisAll correct at 6:15 GMT on Christmas Day
5Linus HamiltonAll correct at 14:12 GMT on Christmas Day
6ZephiAll correct at 20:40 GMT on Christmas Day
7Daniel ChivertonAll but one (5 December) correct at 5:00:24 GMT on Christmas Day
8Jon PalinAll but one (12 December) correct at 5:00:34 GMT on Christmas Day
9Kathryn CoffinAll but one (5 December) correct at 6:28 GMT on Christmas Day
10Félix BretonAll but one (15 December) correct at 9:05 GMT on Christmas Day
I will be in touch will all the entrants in the next few days and I will post pictures of prizes here once they are on their way!
I have already started working on puzzles for next year's (in fact this year's) calendar, so make sure you're back here in December...

Similar posts

Christmas (2019) is coming!
Christmas (2018) is over
Christmas (2018) is coming!
Christmas (2017) is over

Comments

Comments in green were written by me. Comments in blue were not written by me.
@stephan: It looks like the code I wrote to check the solutions were unique contained errors. This might explain why first question was very difficult to solve with logic alone.
Matthew
                 Reply
Are you sure http://www.mscroggs.co.uk/puzzles/126 have unique solutions. See e.g. http://cryptarithms.awardspace.us/solv... which gives lots of solutions
stephan
                 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 "k" then "i" then "t" then "e" in the box below (case sensitive):

Archive

Show me a random blog post
 2020 

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

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

Archive

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