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...
                        
(Click on one of these icons to react to this blog post)

You might also enjoy...

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
×1                 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> <logo>
To prove you are not a spam bot, please type "tneitouq" backwards in the box below (case sensitive):

Archive

Show me a random blog post
 2026 

Feb 2026

Christmas (2025) is over
 2025 
▼ show ▼
 2024 
▼ show ▼
 2023 
▼ show ▼
 2022 
▼ show ▼
 2021 
▼ show ▼
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

wave scattering alphabets bots martin gardner nine men's morris partridge puzzle pi regular expressions stickers reddit mean 24 hour maths platonic solids phd coventry pi approximation day finite group oeis gather town tmip numbers correlation estimation probability gaussian elimination matrices guest posts statistics people maths london underground gerry anderson propositional calculus anscombe's quartet data visualisation inline code hats electromagnetic field dinosaurs polynomials trigonometry royal baby python manchester noughts and crosses talking maths in public european cup flexagons logs frobel youtube error bars simultaneous equations dragon curves accuracy chebyshev golden ratio geometry wool hyperbolic surfaces rhombicuboctahedron football matrix of cofactors errors craft a gamut of games turtles chess triangles standard deviation sobolev spaces curvature hannah fry mathsteroids weak imposition go radio 4 reuleaux polygons christmas card zines stirling numbers crosswords recursion plastic ratio newcastle logic crochet the aperiodical mathsjam programming big internet math-off databet asteroids sound pythagoras sorting raspberry pi cambridge video games thirteen squares folding paper php quadrilaterals kenilworth game of life interpolation graphs live stream london cross stitch crossnumbers royal institution christmas exponential growth pascal's triangle news convergence games warwick captain scarlet rugby inverse matrices ucl bubble bobble geogebra misleading statistics determinants game show probability approximation map projections folding tube maps chalkdust magazine crossnumber ternary national lottery realhats menace sport matrix of minors finite element method light computational complexity pac-man draughts kings machine learning graph theory edinburgh numerical analysis latex advent calendar friendly squares javascript arithmetic speed tennis books weather station fractals palindromes boundary element methods world cup bempp final fantasy datasaurus dozen nonograms pizza cutting golden spiral mathslogicbot logo preconditioning coins harriss spiral fence posts dates signorini conditions binary rust matrix multiplication hexapawn data countdown dataset runge's phenomenon bodmas manchester science festival puzzles fonts matt parker braiding

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2026