# Blog

## Archive

Show me a Random Blog Post**2017**

### Mar 2017

The End of Coins of Constant WidthDragon Curves II

### Feb 2017

The Importance of Estimation Error### Jan 2017

Is MEDUSA the New BODMAS?**2016**

**2015**

**2014**

**2013**

**2012**

## Tags

folding paper folding tube maps london underground platonic solids rhombicuboctahedron raspberry pi weather station programming python php inline code news royal baby probability game show probability christmas flexagons frobel coins reuleaux polygons countdown football world cup sport stickers tennis braiding craft wool emf camp people maths trigonometry logic propositional calculus twitter mathslogicbot oeis pac-man graph theory video games games chalkdust magazine menace machine learning javascript martin gardner reddit national lottery rugby puzzles advent game of life dragon curves fractals pythagoras geometry triangles european cup dates palindromes chalkdust christmas card bubble bobble asteroids final fantasy curvature binary arithmetic bodmas statistics error bars estimation accuracy misleading statistics pizza cutting**2016-01-01 11:32:52**

## Christmas (2015) is Over

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:

# | Name | Details |

1 | Scott | All correct at 5:00:18 GMT on Christmas Day |

2 | Louis de Mendonca | All correct at 5:00:32 GMT on Christmas Day |

3 | Alex Bolton | All correct at 5:00:34 GMT on Christmas Day |

4 | Martin Harris | All correct at 6:15 GMT on Christmas Day |

5 | Linus Hamilton | All correct at 14:12 GMT on Christmas Day |

6 | Zephi | All correct at 20:40 GMT on Christmas Day |

7 | Daniel Chiverton | All but one (5 December) correct at 5:00:24 GMT on Christmas Day |

8 | Jon Palin | All but one (12 December) correct at 5:00:34 GMT on Christmas Day |

9 | Kathryn Coffin | All but one (5 December) correct at 6:28 GMT on Christmas Day |

10 | Félix Breton | All 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 (2016) is Over | Christmas (2016) is Coming! | Christmas (2015) is Coming! | Christmas Card 2016 |

### Comments

Comments in green were written by me. Comments in blue were not written by me.

**2016-01-16**

stephan

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2016-07-14