# Puzzles

• ### Orbit crossnumber

6 December 2023
Can you solve it?
• ### Cryptic crossnumber (including hints)

1 May 2021
Looking for a challenge? Try our cryptic crossnumber—with hints and tips so anyone can have a go!
• ### Christmas puzzle #2: A Christmas nonogram

25 December 2020
Puzzle #2 in our 2020 Christmas puzzle series
• ### Christmas puzzle #1: Christmas tree sudoku

24 December 2020
Puzzle #1 in our 2020 Christmas puzzle series
• ### Chalkdust issue 11 puzzle hunt #5

17 April 2020
Adam Townsend sets the fifth and final puzzle. Can you solve it?
• ### Chalkdust issue 11 puzzle hunt #4

17 April 2020
Humbug sets the fourth puzzle. Can you solve it?
• ### Chalkdust issue 11 puzzle hunt #3

17 April 2020
David Sheard sets the third puzzle. Can you solve it?
• ### Chalkdust issue 11 puzzle hunt #2

17 April 2020
TD Dang sets the second puzzle. Can you solve it?
• ### Launch day puzzle hunt

17 April 2020
Celebrate the launch of issue 11 by taking part in our puzzle hunt
• ### Chalkdust issue 11 puzzle hunt #1

17 April 2020
Matthew Scroggs sets the first puzzle. Can you solve it?
• ### Prize crossnumber, Issue 08

18 October 2018
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
• ### Prize crossnumber, Issue 07

12 March 2018
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
• ### Well, well, well…

18 January 2018
A fiendish puzzle for you to 'pour' over...
• ### Christmas conundrum #4

22 December 2017
Can you solve four puzzles to reveal the hidden message?
• ### Christmas conundrum #3

18 December 2017
Try our nonograms! And remember, not all puzzles have a unique solution...
• ### Christmas conundrum #2

11 December 2017
Solve this and you could be the lucky winner of a signed copy of The Indisputable Existence of Santa Claus
• ### Christmas conundrum #1

4 December 2017
Solve this and you could be the lucky winner of a Chalkdust T-shirt
• ### Prize crossnumber, Issue 06

18 October 2017
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber

29 June 2017
• ### Prize crossnumber, Issue 05

6 March 2017
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
• ### Puzzles, Issue 05

6 March 2017
Solve the puzzles that appeared in Issue 05.

23 December 2016
Behind today's door... a puzzle!

12 December 2016
Behind today's door... a puzzle!

6 December 2016
Behind today's door... a puzzle!

2 December 2016
Behind the second door of the advent calendar, there is a puzzle
• ### Problem solving 101

3 October 2016
Never be stumped by a maths problem again, with this crash course from the ever-competent Stephen Muirhead
• ### Puzzles, Issue 04

3 October 2016
Solve the puzzles that appeared in Issue 04.
• ### Prize crossnumber, Issue 04

3 October 2016
Can you solve it?

14 July 2016
Can you solve these puzzles about differentiation and integration?
• ### Mini crossnumber

19 June 2016
All the fun of our prize crossnumber, just smaller and without a prize
• ### Carnival of Mathematics 133

14 April 2016
This month's round up of mathematical blog posts.
• ### Issue 03 launch quiz

17 March 2016
How many points could you have scored at our launch quiz?
• ### Puzzles, Issue 03

13 March 2016
Solve the puzzles that appeared in Issue 03.
• ### Christmas puzzles

24 December 2015
Something for you to solve during the post-Christmas lull
• ### Puzzles, Issue 02

6 October 2015
These puzzles appeared in Issue 02 of the magazine.
• ### Can you solve these puzzles?

3 September 2015
While we work on issue 2
• ### Introducing the Cuboku

20 August 2015
Can you solve our 3D Sudoku puzzles?

31 July 2015
• ### Puzzles on square grids

16 July 2015
How to make Sudoku more interesting
• ### Puzzles, Issue 01

7 July 2015
These puzzles appeared in Issue 01 of the magazine.
• ### What makes a good puzzle?

11 June 2015
If you enjoyed Hannah's sweets then you'll love these...
• ### For the love of puzzles

14 May 2015
Pub ✕ maths = ?
• ### £100 Prize Crossnumber, Issue 01

24 March 2015