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Crossnumber winners, Issue 05

Did you win?

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It’s that time of the year again: time to announce the winners of the Chalkdust prize crossnumber #5! Before we reveal the winners, here is the solution:

9 0 6 2 5 4 3 0 5 1 4 5
3 9 9 7 8 9 5 3
7 3 0 8 7 1 6 2
6 5 7 6 3 9 9 9 3 3 3 9 1 1
6 5 5 9 7
5 3 2 1 7 3 8 1 6 5 4 7 2 9
9 9 9 9 9
4 3 1 0 5 7 7 3 9 7 3 1 3 3
1 5 0 6 0
3 4 9 1 5 6 7 3 7 4 0 3 1 1
1 3 0 9 9
7 1 7 2 3 9 7 3 8 9 6 8 2 8
3 2 6 9 6 2 6 3
5 8 1 9 4 1 7 6
7 2 9 2 3 2 4 9 9 3 0 1

The sum of the across clues was 136,462,689,389.

Picking the winners

We received 60 entries, 48 of which were correct.

So without further ado, the winner of the Chalkdust Issue 05 crossnumber competition is Mario García Pascual, who wins a £100 goody bag from Maths Gear. The runners-up, and winners of Chalkdust T-shirts, are Sean Y., Colin Beveridge and Elena Petrunina.

Thank you to everyone who entered the crossnumber competition! The competition will return in Issue 06 of Chalkdust, released in October.

Matthew Scroggs is a PhD student at UCL working on finite and boundary element methods. His website, mscroggs.co.uk, is full of maths and now features a video of him completing a level of Pac-Man optimally.
Twitter  @mscroggs    Website  mscroggs.co.uk    + More articles by Matthew

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