Well, only two hours 55 minutes left, hope you enjoyed it! We will be working on the final leader board and contacting sponsors and the PR people over the next few days, so don;t expect to get the results just yet. We should publish something with updated leader boards and certificates early next week. Sorry if you were hoping something sooner, but you have managed to wait this long, just a few more days. Harry
Just to wish you all a very Merry Christmas and a Happy New Year, from Harry and Ada Rose.
As a follow up to her previous article on Babbage and the Difference Engine, Dr. Aditi Kar has written an article entitled Lady Ada Lovelace and the analytical engine.
How did you get on? Part B caused some anguish this time I think, and even part A was a bit tricky. Just take a look at Challenge 5 if you want to get serious!
Here are the winners of the prizes for Challenge 4A. Well done to all of you (and to those who haven't won anything yet I say an even louder congrats for your staying power - keep trying)
| Carlton Leonard from harrow way Ryan Green from Wrenn school Vit Huang, Rose Norris, James Burton, Bradley Conder, Aaron Kirkbride, Holly Marshall, Peter Owen, Jamie Pitts, Shaun Trussell, Robert Wight and Arron Reed from Fearnhill Amber Clark and Charlotte Clift from Woodlands School, Basildon Jena Glover-Dickson and Bethany Ashley from Harlington Upper School Edward, Jon, Adam and Rachel from Amery Hill Daniel Bilton from Farnborough School Georgia, Charly, Serena, Libby, Stevie and Rachel from Newport Girls' High School
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Did you crack part B this week? It was a bi-literarie cipher, also known as a Bacon cipher. The text was in blocks of four to confuse you, but every fifth letter was a capital to suggest that blocks of five were important. Each block of five represented a binary number with a or A representing 0 and b or B representing 1, and the corresponding numbers encoded A, B, C, D E, etc as 0,1,2,3,4, ... Not too bad once you saw what was going on, but a devil if you can't see it!
Part A was a bit more straightforward - but things are a lot trickier than Challenge 1A. congratulations to the winners of the prizes for Challenge 5A:
| Dom, Jamie, James and Simon from Alcester Grammar School Shen Ye, Alex Andreou and Alastair Robertson, from The Latymer School George Walker, Andrew Gale, Sril Kadari, Aleksander Shilling, Adam Wilkosz, Charlotte Corrigan, Charlotte Mings, Chris Lei, Pinky Ip, Oliver Gillespie, Kieran Hogarty, Aple Chung and Sophie Lynch from St Albans Catholic High Emily Gray, Madde Hann and Amy Middleton from Whitby Maths Club S from The Henrietta Barnett School Ben Spicer, Jawwad Farid and Jory Dunworth-Warby from Bridgnorth Endowed Ellie Wright from Whitby Maths Club cherub200 and nannah from Ventnor Middle School
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