Our original prize crossnumber is featured on pages 48 and 49 of Issue 10.
- Download Crossnumber #10 as a PDF, or read on!
- Submit your answer
Rules
- Although many of the clues have multiple answers, there is only one solution to the completed crossnumber. As usual, no numbers begin with 0. Use of Python, OEIS, Wikipedia, etc. is advised for some of the clues.
- One randomly selected correct answer will win a £100 Maths Gear goody bag, including non-transitive dice, a Festival of the Spoken Nerd DVD, and much, much more. Three randomly selected runners up will win a Chalkdust T-shirt. Maths Gear is a website that sells nerdy things worldwide, with free UK shipping.
- To enter, enter the sum of the across clues below by 2 February 2020. Only one entry per person will be accepted. Winners will be notified by email and announced on our blog by 14 March 2020.
Correction: Clue 13A has been corrected to “49A reversed” instead of “49D reversed”.
Correction: Clue 38D has been corrected to “33A less than 39D” instead of “33A less than 39A”.
Clarificiation: The triangle in 6D is a right-angled triangle.
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At 10, it’s the tenth most egg-cellent issue of Chalkdust: 
At 9, it’s 
At 8, it’s John Lennon’s latest avant garde composition: issue 09. 
At 7, it’s Puff, the Magic Dragon Curves by Peter, 
At 6, it’s the issue that will explain why the vote to put this issue in sixth place is unfair: 
At 5, it’s When I’m 
At 4, it’s the only issue printed on A5 paper (which was a mistake, just like the minidisc): 
At 3, it’s You’re my number three issue of Chalkdust by S Club 
Topping the pops this issue, it’s a new entry and a brand new release: 
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