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year6:
- url: 6-48-most-feared-day
title: The most feared day
available: 2026-07-30T13:00:00
deadline: 2026-08-02T13:00:00
- url: 6-47-monkey-multiplication
title: Monkey Multiplication
available: 2026-07-23T13:00:00
deadline: 2026-07-26T13:00:00
- url: 6-46-any-number
title: Any number any card trick
available: 2026-07-16T13:00:00
deadline: 2026-07-19T13:00:00
- url: 6-45-coastline-paradox
title: The Coastline Paradox
available: 2026-07-09T13:00:00
deadline: 2026-07-12T13:00:00
- url: 6-44-passcode-logic
title: Passcode logic
available: 2026-07-02T13:00:00
deadline: 2026-07-05T13:00:00
- url: 6-43-maths-mentalism
title: Maths mentalism
available: 2026-06-25T13:00:00
deadline: 2026-06-28T13:00:00
- url: 6-42-divide-by-zero
title: Why you can't divide by zero
available: 2026-06-18T13:00:00
deadline: 2026-06-21T13:00:00
- url: 6-41-ive-got-the-power
title: I've Got The Power!
available: 2026-06-11T13:00:00
deadline: 2026-06-14T13:00:00
- url: 6-40-line-multiplication
title: Line multiplication
available: 2026-06-04T13:00:00
deadline: 2026-06-07T13:00:00
- url: 6-39-multifactorials
title: Multifactorials
available: 2026-05-28T13:00:00
deadline: 2026-05-31T13:00:00
- url: 6-38-hilbert-hotel
title: Hilbert Hotel
available: 2026-05-21T13:00:00
deadline: 2026-05-24T13:00:00
- url: 6-37-to-infinity
title: To infinity and beyond
available: 2026-05-14T13:00:00
deadline: 2026-05-17T13:00:00
- url: 6-36-poison-frogs
title: Life saving probabilities
available: 2026-05-07T13:00:00
deadline: 2026-05-10T13:00:00
- url: 6-35-piece-pizza
title: A piece of pizza
available: 2026-04-30T13:00:00
deadline: 2026-05-03T13:00:00
- url: 6-34-self-descriptive
title: Self-descriptive numbers
available: 2026-04-23T13:00:00
deadline: 2025-04-27T13:00:00
- url: 6-33-weird-shapes
title: Weird shapes
available: 2026-04-16T13:00:00
deadline: 2026-04-19T13:00:00
- url: 6-32-tiles-tribulations
title: Tiles and tribulations
available: 2026-04-09T13:00:00
deadline: 2026-04-12T13:00:00
- url: 6-31-quick-trick
title: A quick trick
available: 2026-04-02T13:00:00
deadline: 2026-04-05T13:00:00
- url: 6-30-parker-square
title: Mostly magic squares
available: 2026-03-26T13:00:00
deadline: 2026-03-29T13:00:00
- url: 6-29-making-the-cut
title: Making the cut
available: 2026-03-19T13:00:00
deadline: 2026-03-22T13:00:00
- url: 6-28-number-knights
title: Number knights
available: 2026-03-12T13:00:00
deadline: 2026-03-15T13:00:00
- url: 6-27-prime-time
title: Prime time Level 1
available: 2026-03-05T13:00:00
deadline: 2026-03-08T13:00:00
- url: 6-26-golden-egg
title: The golden egg
available: 2026-02-26T13:00:00
deadline: 2026-03-01T13:00:00
- url: 6-25-speedy-squaring
title: Speedy squaring
available: 2026-02-19T13:00:00
deadline: 2026-02-22T13:00:00
- url: 6-24-why-7-weird
title: Why 7 is weird
available: 2026-02-12T13:00:00
deadline: 2026-02-15T13:00:00
- url: 6-23-nugget-numbers
title: Nugget numbers
available: 2026-02-05T13:00:00
deadline: 2026-02-08T13:00:00
- url: 6-22-rock-paper-scissors
title: How to win at rock, paper, scissors
available: 2026-01-29T13:00:00
deadline: 2026-02-01T13:00:00
- url: 6-21-perfect-number
title: A perfect number
available: 2026-01-22T13:00:00
deadline: 2026-01-24T13:00:00
- url: 6-20-pi
title: Pi = 3.2?
available: 2026-01-15T13:00:00
deadline: 2026-01-18T13:00:00
- url: 6-19-lucky-numbers
title: Lucky numbers
available: 2026-01-08T13:00:00
deadline: 2026-01-11T13:00:00
- url: 6-18-algorithmic-enchantment
title: Algorithmic enchantment
available: 2026-01-01T13:00:00
deadline: 2026-01-04T13:00:00
- url: 6-17-coin-quandaries
title: Coin quandaries
available: 2025-12-25T13:00:00
deadline: 2025-12-28T13:00:00
- url: 6-16-wobbly-circles
title: Wobbly circles
available: 2025-12-18T13:00:00
deadline: 2025-12-21T13:00:00
- url: 6-15-constant-width
title: Shapes of constant width
available: 2025-12-11T13:00:00
deadline: 2025-12-15T13:00:00
- url: 6-14-googolplexed
title: Googolplexed
available: 2025-12-04T13:00:00
deadline: 2025-12-07T13:00:00
- url: 6-13-square-sum
title: Alright for sum
available: 2025-11-27T13:00:00
deadline: 2025-11-30T13:00:00
- url: 6-12-sound-sequences
title: The sound of sequences
available: 2025-11-20T13:00:00
deadline: 2025-11-23T13:00:00
- url: 6-11-maths-years
title: Year of the mathematician
available: 2025-11-13T13:00:00
deadline: 2025-11-16T13:00:00
- url: 6-10-jumping-frogs
title: Jumping frogs
available: 2025-11-06T13:00:00
deadline: 2025-11-09T13:00:00
- url: 6-09-pancakes
title: Pancake numbers
available: 2025-10-30T13:00:00
deadline: 2025-11-02T13:00:00
- url: 6-08-cards
title: Pick a card, any card
available: 2025-10-23T13:00:00
deadline: 2025-10-27T15:00:00
- url: 6-07-connect-four
title: Connect four
available: 2025-10-16T13:00:00
deadline: 2025-10-20T15:00:00
- url: 6-06-face-time
title: Face time
available: 2025-10-09T13:00:00
deadline: 2025-10-12T13:00:00
- url: 6-05-ten-factorial
title: 10!
available: 2025-10-02T13:00:00
deadline: 2025-10-05T13:00:00
- url: 6-04-polyominoes
title: Polyominoes
available: 2025-09-25T13:00:00
deadline: 2025-09-28T13:00:00
- url: 6-03-tie-your-shoes
title: Use maths to tie your shoes fast
available: 2025-09-18T13:00:00
deadline: 2025-09-21T18:00:00
- url: 6-02-one-and-primes
title: Prime numbers (and their buddy, one)
available: 2025-09-11T13:00:00
deadline: 2025-09-15T19:00:00
- url: 6-01-mathematics-of-cake
title: The mathematics of cake
available: 2025-08-31T07:00:00
deadline: 2025-09-07T19:00:00
year7:
- url: 7-48-sporting-loopholes
title: Sporting Loopholes
available: 2026-07-30T13:00:00
deadline: 2026-08-02T13:00:00
- url: 7-47-fire-water
title: Fire and water
available: 2026-07-23T13:00:00
deadline: 2026-07-26T13:00:00
- url: 7-46-apple-pie
title: The apple pie bake-off
available: 2026-07-16T13:00:00
deadline: 2026-07-19T13:00:00
- url: 7-45-trains-clocks
title: Trains and clocks
available: 2026-07-09T13:00:00
deadline: 2026-07-12T13:00:00
- url: 7-44-bananas-monkeys
title: Bananas and monkeys
available: 2026-07-02T13:00:00
deadline: 2026-07-05T13:00:00
- url: 7-43-little-hexagon
title: The little hexagon that could
available: 2026-06-25T13:00:00
deadline: 2026-06-28T13:00:00
- url: 7-42-pet-puzzle
title: Pet Puzzle
available: 2026-06-18T13:00:00
deadline: 2026-06-21T13:00:00
- url: 7-41-aluminium-can-engineering
title: Aluminium Can Engineering
available: 2026-06-11T13:00:00
deadline: 2026-06-14T13:00:00
- url: 7-40-number-sense
title: Number Sense
available: 2026-06-04T13:00:00
deadline: 2026-06-07T13:00:00
- url: 7-39-top-of-the-league
title: Top of the League
available: 2026-05-28T13:00:00
deadline: 2026-05-31T13:00:00
- url: 7-38-josephs-machines
title: Joseph's Machines
available: 2026-05-21T13:00:00
deadline: 2026-05-24T13:00:00
- url: 7-37-mathematical-timeline
title: Mathematical Timeline
available: 2026-05-14T13:00:00
deadline: 2026-05-17T13:00:00
- url: 7-36-blackboard-equation
title: Blackboard Equation
available: 2026-05-07T13:00:00
deadline: 2026-05-10T13:00:00
- url: 7-35-hidden-figures
title: Hidden Figures
available: 2026-04-30T13:00:00
deadline: 2026-05-03T13:00:00
- url: 7-34-good-will-hunting
title: Good Will Hunting
available: 2026-04-23T13:00:00
deadline: 2025-04-27T13:00:00
- url: 7-33-a-matter-factorial
title: A Matter Of Factorial!
available: 2026-04-16T13:00:00
deadline: 2026-04-19T13:00:00
- url: 7-32-chocolate-algebra
title: Chocolate algebra
available: 2026-04-09T13:00:00
deadline: 2026-04-12T13:00:00
- url: 7-31-testing-tankards
title: Testing tankards
available: 2026-04-02T13:00:00
deadline: 2026-04-05T13:00:00
- url: 7-30-manipulating-cubes
title: Manipulating cubes
available: 2026-03-26T13:00:00
deadline: 2026-03-29T13:00:00
- url: 7-29-bedtime-stories
title: Bedtime stories
available: 2026-03-19T13:00:00
deadline: 2026-03-22T13:00:00
- url: 7-28-eleven-eleven
title: Eleven eleven
available: 2026-03-12T13:00:00
deadline: 2026-03-15T13:00:00
- url: 7-27-secret-happiness
title: The Secret of Happiness
available: 2026-03-05T13:00:00
deadline: 2026-03-08T13:00:00
- url: 7-26-maths-jokes
title: Maths Jokes
available: 2026-02-26T13:00:00
deadline: 2026-03-01T13:00:00
- url: 7-25-tricky-parking-problem
title: Tricky parking problem
available: 2026-02-19T13:00:00
deadline: 2026-02-22T13:00:00
- url: 7-24-optimise-pizza-money
title: Optimising your pizza money
available: 2026-02-12T13:00:00
deadline: 2026-02-15T13:00:00
- url: 7-23-pie-charts
title: Pie charts and speed-reading
available: 2026-02-05T13:00:00
deadline: 2026-02-08T13:00:00
- url: 7-22-downhill-from-here
title: It's all downhill from here
available: 2026-01-29T13:00:00
deadline: 2026-02-01T13:00:00
- url: 7-21-sundogs-random-dots
title: Sundogs and Random Dots
available: 2026-01-22T13:00:00
deadline: 2026-01-24T13:00:00
- url: 7-20-crosses-crosses
title: Crosses and Crosses
available: 2026-01-15T13:00:00
deadline: 2026-01-18T13:00:00
- url: 7-19-marie-curie
title: Madam Curie's square riddle
available: 2026-01-08T13:00:00
deadline: 2026-01-11T13:00:00
- url: 7-18-codes-physics
title: Codes and Physics
available: 2026-01-01T13:00:00
deadline: 2026-01-04T13:00:00
- url: 7-17-chrismaths
title: Chrismaths - Part 4
available: 2025-12-25T13:00:00
deadline: 2025-12-28T13:00:00
- url: 7-16-chrismaths
title: Chrismaths - Part 3
available: 2025-12-18T13:00:00
deadline: 2025-12-21T13:00:00
- url: 7-15-chrismaths
title: Chrismaths - Part 2
available: 2025-12-11T13:00:00
deadline: 2025-12-15T13:00:00
- url: 7-14-chrismaths
title: Chrismaths - Part 1
available: 2025-12-04T13:00:00
deadline: 2025-12-07T13:00:00
- url: 7-13-prime-time
title: Prime Time Level 2
available: 2025-11-27T13:00:00
deadline: 2025-11-30T13:00:00
- url: 7-12-kenken
title: KenKen Level 2
available: 2025-11-20T13:00:00
deadline: 2025-11-23T13:00:00
- url: 7-11-mercury-trivia
title: Mercury Trivia
available: 2025-11-13T13:00:00
deadline: 2025-11-16T13:00:00
- url: 7-10-futurama-maths
title: Ramanujan
available: 2025-11-06T13:00:00
deadline: 2025-11-09T13:00:00
- url: 7-09-man-who-knew-infinity
title: The Man Who Knew Infinity
available: 2025-10-30T13:00:00
deadline: 2025-11-02T13:00:00
- url: 7-08-maths-jokes
title: Maths Jokes
available: 2025-10-23T13:00:00
deadline: 2025-10-27T15:00:00
- url: 7-07-build-your-own-plane
title: Build your own plane
available: 2025-10-16T13:00:00
deadline: 2025-10-20T15:00:00
- url: 7-06-exoplanets
title: Exoplanets
available: 2025-10-09T13:00:00
deadline: 2025-10-12T13:00:00
- url: 7-05-supernovae
title: Supernovae
available: 2025-10-02T13:00:00
deadline: 2025-10-05T13:00:00
- url: 7-04-matts-favourite-number
title: Matt's Favourite Number
available: 2025-09-25T13:00:00
deadline: 2025-09-28T13:00:00
- url: 7-03-the-big-bang
title: The Big Bang
available: 2025-09-18T13:00:00
deadline: 2025-09-21T18:00:00
- url: 7-02-the-melancoil
title: The Melancoil
available: 2025-09-11T13:00:00
deadline: 2025-09-15T19:00:00
- url: 7-01-school-of-rock
title: School of Rock
available: 2025-08-31T07:00:00
deadline: 2025-09-07T19:00:00
year8:
- url: 8-48-plane-physics
title: Plane physics
available: 2026-07-30T13:00:00
deadline: 2026-08-02T13:00:00
- url: 8-47-pat-village-visit
title: Pat's village visit
available: 2026-07-23T13:00:00
deadline: 2026-07-26T13:00:00
- url: 8-46-chess-conundrum
title: Chess conundrum
available: 2026-07-16T13:00:00
deadline: 2026-07-19T13:00:00
- url: 8-45-blueberry-planet
title: Bluberry planet
available: 2026-07-09T13:00:00
deadline: 2026-07-12T13:00:00
- url: 8-44-spuds-sums
title: Spuds Sums
available: 2026-07-02T13:00:00
deadline: 2026-07-05T13:00:00
- url: 8-43-nice-dice
title: Nice dice
available: 2026-06-25T13:00:00
deadline: 2026-06-28T13:00:00
- url: 8-42-miracle-chocolate
title: Miracle Chocolate
available: 2026-06-18T13:00:00
deadline: 2026-06-21T13:00:00
- url: 8-41-more-rules-critical-thinking
title: More Rules for Critical Thinking
available: 2026-06-11T13:00:00
deadline: 2026-06-14T13:00:00
- url: 8-40-rules-critical-thinking
title: Rules for Critical Thinking
available: 2026-06-04T13:00:00
deadline: 2026-06-07T13:00:00
- url: 8-39-floppy-pizza
title: Floppy Pizza
available: 2026-05-28T13:00:00
deadline: 2026-05-31T13:00:00
- url: 8-38-amazing-grace
title: Amazing Grace
available: 2026-05-21T13:00:00
deadline: 2026-05-24T13:00:00
- url: 8-37-mathematical-timeline
title: Mathematical Timeline
available: 2026-05-14T13:00:00
deadline: 2026-05-17T13:00:00
- url: 8-36-seven-bridges-konigsberg
title: Seven Bridges of Konigsberg
available: 2026-05-07T13:00:00
deadline: 2026-05-10T13:00:00
- url: 8-35-ada-lovelace
title: Ada Lovelace
available: 2026-04-30T13:00:00
deadline: 2026-05-03T13:00:00
- url: 8-34-pentagons-tile
title: Pentagons Tile
available: 2026-04-23T13:00:00
deadline: 2025-04-27T13:00:00
- url: 8-33-north-pole
title: The North Pole Riddle
available: 2026-04-16T13:00:00
deadline: 2026-04-19T13:00:00
- url: 8-32-olympic-mascots
title: Olympic mascots
available: 2026-04-09T13:00:00
deadline: 2026-04-12T13:00:00
- url: 8-31-art-gallery
title: In the art gallery
available: 2026-04-02T13:00:00
deadline: 2026-04-05T13:00:00
- url: 8-30-wombat-geometry
title: Wombat Geometry
available: 2026-03-26T13:00:00
deadline: 2026-03-29T13:00:00
- url: 8-29-paper-ink
title: Paper and ink
available: 2026-03-19T13:00:00
deadline: 2026-03-22T13:00:00
- url: 8-28-laurels-hardy
title: Laurels and Hardy
available: 2026-03-12T13:00:00
deadline: 2026-03-15T13:00:00
- url: 8-27-colour-code-challenge
title: Colour Code Challenge
available: 2026-03-05T13:00:00
deadline: 2026-03-08T13:00:00
- url: 8-26-rattlebacks
title: Rattlebacks
available: 2026-02-26T13:00:00
deadline: 2026-03-01T13:00:00
- url: 8-25-computer-music
title: Computer music and techno ditties
available: 2026-02-19T13:00:00
deadline: 2026-02-22T13:00:00
- url: 8-24-curious-bear-doctor-who
title: A curious bear and Doctor Who
available: 2026-02-12T13:00:00
deadline: 2026-02-15T13:00:00
- url: 8-23-countdown-levitating-water
title: Countdown and levitating water
available: 2026-02-05T13:00:00
deadline: 2026-02-08T13:00:00
- url: 8-22-freezing-sports
title: Freezing sports and flipping pancakes
available: 2026-01-29T13:00:00
deadline: 2026-02-01T13:00:00
- url: 8-21-dripping-taps
title: Dripping Taps
available: 2026-01-22T13:00:00
deadline: 2026-01-24T13:00:00
- url: 8-20-flag-of-flags
title: A flag of flags
available: 2026-01-15T13:00:00
deadline: 2026-01-18T13:00:00
- url: 8-19-lou-costello
title: Lou Costello, Pi and Pendula
available: 2026-01-08T13:00:00
deadline: 2026-01-11T13:00:00
- url: 8-18-ma-kettle
title: Ma and Pa Kettle
available: 2026-01-01T13:00:00
deadline: 2026-01-04T13:00:00
- url: 8-17-chrismaths
title: Chrismaths - Part 4
available: 2025-12-25T13:00:00
deadline: 2025-12-28T13:00:00
- url: 8-16-chrismaths
title: Chrismaths - Part 3
available: 2025-12-18T13:00:00
deadline: 2025-12-21T13:00:00
- url: 8-15-chrismaths
title: Chrismaths - Part 2
available: 2025-12-11T13:00:00
deadline: 2025-12-15T13:00:00
- url: 8-14-chrismaths
title: Chrismaths - Part 1
available: 2025-12-04T13:00:00
deadline: 2025-12-07T13:00:00
- url: 8-13-prime-time
title: Prime Time Level 3
available: 2025-11-27T13:00:00
deadline: 2025-11-30T13:00:00
- url: 8-12-kenken
title: KenKen Level 3
available: 2025-11-20T13:00:00
deadline: 2025-11-23T13:00:00
- url: 8-11-chikas-test-seven
title: Chika's Test for Seven
available: 2025-11-13T13:00:00
deadline: 2025-11-16T13:00:00
- url: 8-10-weird-shapes
title: Weird Shapes
available: 2025-11-06T13:00:00
deadline: 2025-11-09T13:00:00
- url: 8-09-secret-maths-club
title: The Secret Maths Club
available: 2025-10-30T13:00:00
deadline: 2025-11-02T13:00:00
- url: 8-08-line-rider
title: Line Rider
available: 2025-10-23T13:00:00
deadline: 2025-10-27T15:00:00
- url: 8-07-worlds-greatest-thief
title: The world's greatest thief
available: 2025-10-16T13:00:00
deadline: 2025-10-20T15:00:00
- url: 8-06-black-holes
title: Black Holes
available: 2025-10-09T13:00:00
deadline: 2025-10-12T13:00:00
- url: 8-05-rocket-maths
title: Rocket maths
available: 2025-10-02T13:00:00
deadline: 2025-10-05T13:00:00
- url: 8-04-infinite-hotel
title: The Infinite Hotel
available: 2025-09-25T13:00:00
deadline: 2025-09-28T13:00:00
- url: 8-03-chaotic-pendulums
title: Chaotic Pendulums
available: 2025-09-18T13:00:00
deadline: 2025-09-21T18:00:00
- url: 8-02-jurassic-park
title: Jurassic Park mathematics
available: 2025-09-11T13:00:00
deadline: 2025-09-15T19:00:00
- url: 8-01-wizard-of-oz
title: Wizard of Oz
available: 2025-08-31T07:00:00
deadline: 2025-09-07T19:00:00
year9:
- url: 9-48-perplexing-paperclips
title: Perplexing paperclips
available: 2026-07-30T13:00:00
deadline: 2026-08-02T13:00:00
- url: 9-47-inflating-balloon
title: Inflating a balloon
available: 2026-07-23T13:00:00
deadline: 2026-07-26T13:00:00
- url: 9-46-freaky-dots
title: Freaky dot patterns
available: 2026-07-16T13:00:00
deadline: 2026-07-19T13:00:00
- url: 9-45-catching-kendama
title: Catching Kendama
available: 2026-07-09T13:00:00
deadline: 2026-07-12T13:00:00
- url: 9-44-money-catching
title: Money catching
available: 2026-07-02T13:00:00
deadline: 2026-07-05T13:00:00
- url: 9-43-wright-stuff
title: The Wright Stuff
available: 2026-06-25T13:00:00
deadline: 2026-06-28T13:00:00
- url: 9-42-cheryls-birthday
title: Cheryl's birthday
available: 2026-06-18T13:00:00
deadline: 2026-06-21T13:00:00
- url: 9-41-paradoxical-probability
title: Paradoxical probability
available: 2026-06-11T13:00:00
deadline: 2026-06-14T13:00:00
- url: 9-40-pigeonhole-problem
title: The pigeonhole principle
available: 2026-06-04T13:00:00
deadline: 2026-06-07T13:00:00
- url: 9-39-richard-feynman-superhero
title: Richard Feynman - Superhero
available: 2026-05-28T13:00:00
deadline: 2026-05-31T13:00:00
- url: 9-38-number-riddles
title: Number Riddles
available: 2026-05-21T13:00:00
deadline: 2026-05-24T13:00:00
- url: 9-37-ham-sandwich-problem
title: The Ham Sandwich Problem
available: 2026-05-14T13:00:00
deadline: 2026-05-17T13:00:00
- url: 9-36-tangrams
title: Tangrams
available: 2026-05-07T13:00:00
deadline: 2026-05-10T13:00:00
- url: 9-35-mathematical-plaques
title: Mathematical Plaques
available: 2026-04-30T13:00:00
deadline: 2026-05-03T13:00:00
- url: 9-34-mathematical-timeline
title: Mathematical Timeline
available: 2026-04-23T13:00:00
deadline: 2025-04-27T13:00:00
- url: 9-33-sphere-packing
title: Sphere Packing
available: 2026-04-16T13:00:00
deadline: 2026-04-19T13:00:00
- url: 9-32-circle-mystery
title: Circle Mystery
available: 2026-04-09T13:00:00
deadline: 2026-04-12T13:00:00
- url: 9-31-qi-mathematics
title: QI Mathematics
available: 2026-04-02T13:00:00
deadline: 2026-04-05T13:00:00
- url: 9-30-teachers-pets
title: Teacher's Pets
available: 2026-03-26T13:00:00
deadline: 2026-03-29T13:00:00
- url: 9-29-four-brothers
title: Four brothers
available: 2026-03-19T13:00:00
deadline: 2026-03-22T13:00:00
- url: 9-28-venn-diagrams
title: Venn diagrams
available: 2026-03-12T13:00:00
deadline: 2026-03-15T13:00:00
- url: 9-27-more-water-jugs
title: More Water Jugs
available: 2026-03-05T13:00:00
deadline: 2026-03-08T13:00:00
- url: 9-26-bird-brain
title: Bird Brain
available: 2026-02-26T13:00:00
deadline: 2026-03-01T13:00:00
- url: 9-25-pendulum-patterns
title: Pendulum Patterns
available: 2026-02-19T13:00:00
deadline: 2026-02-22T13:00:00
- url: 9-24-four-colour-map-theorem
title: Four-Colour Map Theorem
available: 2026-02-12T13:00:00
deadline: 2026-02-15T13:00:00
- url: 9-23-collision-mystery
title: Collision Mystery
available: 2026-02-05T13:00:00
deadline: 2026-02-08T13:00:00
- url: 9-22-mean-girls
title: Mean Girls
available: 2026-01-29T13:00:00
deadline: 2026-02-01T13:00:00
- url: 9-21-shilling-thoughts
title: A Shilling for your Thoughts
available: 2026-01-22T13:00:00
deadline: 2026-01-24T13:00:00
- url: 9-20-puzzle-compendium
title: Puzzle Compendium
available: 2026-01-15T13:00:00
deadline: 2026-01-18T13:00:00
- url: 9-19-bubble-solution
title: Bubble Solution
available: 2026-01-08T13:00:00
deadline: 2026-01-11T13:00:00
- url: 9-18-teapot-time
title: Teapot Time
available: 2026-01-01T13:00:00
deadline: 2026-01-04T13:00:00
- url: 9-17-chrismaths
title: Chrismaths - Part 4
available: 2025-12-25T13:00:00
deadline: 2025-12-28T13:00:00
- url: 9-16-chrismaths
title: Chrismaths - Part 3
available: 2025-12-18T13:00:00
deadline: 2025-12-21T13:00:00
- url: 9-15-chrismaths
title: Chrismaths - Part 2
available: 2025-12-11T13:00:00
deadline: 2025-12-15T13:00:00
- url: 9-14-chrismaths
title: Chrismaths - Part 1
available: 2025-12-04T13:00:00
deadline: 2025-12-07T13:00:00
- url: 9-13-prime-time
title: Prime Time Level 4
available: 2025-11-27T13:00:00
deadline: 2025-11-30T13:00:00
- url: 9-12-kenken
title: KenKen Level 4
available: 2025-11-20T13:00:00
deadline: 2025-11-23T13:00:00
- url: 9-11-beautiful-mind
title: A Beautiful Mind
available: 2025-11-13T13:00:00
deadline: 2025-11-16T13:00:00
- url: 9-10-clock-calculation
title: Clock Calculation
available: 2025-11-06T13:00:00
deadline: 2025-11-09T13:00:00
- url: 9-09-checkmate
title: Checkmate
available: 2025-10-30T13:00:00
deadline: 2025-11-02T13:00:00
- url: 9-08-mighty-magic-square
title: Mighty Magic Square
available: 2025-10-23T13:00:00
deadline: 2025-10-27T15:00:00
- url: 9-07-queen-of-katwe
title: Queen of Katwe
available: 2025-10-16T13:00:00
deadline: 2025-10-20T15:00:00
- url: 9-06-x-y
title: X + Y
available: 2025-10-09T13:00:00
deadline: 2025-10-12T13:00:00
- url: 9-05-breakfast-curiosity-part2
title: Breakfast curiosity – Part 2
available: 2025-10-02T13:00:00
deadline: 2025-10-05T13:00:00
- url: 9-04-strange-breakfasts
title: Strange Breakfasts
available: 2025-09-25T13:00:00
deadline: 2025-09-28T13:00:00
- url: 9-03-lots-of-socks
title: Lots of Socks
available: 2025-09-18T13:00:00
deadline: 2025-09-21T18:00:00
- url: 9-02-romantic-mathematics
title: Romantic Mathematics
available: 2025-09-11T13:00:00
deadline: 2025-09-15T19:00:00
- url: 9-01-sing-a-long
title: Sing-A-Long-A Googol
available: 2025-08-31T07:00:00
deadline: 2025-09-07T19:00:00
year10:
- url: 10-48-harald-bluetooth
title: Harald Bluetooth
available: 2026-07-30T13:00:00
deadline: 2026-08-02T13:00:00
- url: 10-47-oxford-bell
title: The Oxford Bell
available: 2026-07-23T13:00:00
deadline: 2026-07-26T13:00:00
- url: 10-46-bananas
title: Bananas!
available: 2026-07-16T13:00:00
deadline: 2026-07-19T13:00:00
- url: 10-45-efficient-detective
title: The efficient detective
available: 2026-07-09T13:00:00
deadline: 2026-07-12T13:00:00
- url: 10-44-ice-cream
title: Ice cream pie charts
available: 2026-07-02T13:00:00
deadline: 2026-07-05T13:00:00
- url: 10-43-telescopes
title: Telescopes
available: 2026-06-25T13:00:00
deadline: 2026-06-28T13:00:00
- url: 10-42-zero-knowledge-proofs
title: Zero-knowledge proofs
available: 2026-06-18T13:00:00
deadline: 2026-06-21T13:00:00
- url: 10-41-concrete-transfer
title: A concrete transfer
available: 2026-06-11T13:00:00
deadline: 2026-06-14T13:00:00
- url: 10-40-classic-countdown
title: Classic Countdown
available: 2026-06-04T13:00:00
deadline: 2026-06-07T13:00:00
- url: 10-39-a-trapped-knight
title: A Trapped Knight
available: 2026-05-28T13:00:00
deadline: 2026-05-31T13:00:00
- url: 10-38-revolutionary-riddles
title: Revolutionary Riddles
available: 2026-05-21T13:00:00
deadline: 2026-05-24T13:00:00
- url: 10-37-juice-water
title: Juice and Water
available: 2026-05-14T13:00:00
deadline: 2026-05-17T13:00:00
- url: 10-36-lewis-carroll
title: Lewis Carroll's Pillow Problem
available: 2026-05-07T13:00:00
deadline: 2026-05-10T13:00:00
- url: 10-35-pi
title: Pi
available: 2026-04-30T13:00:00
deadline: 2026-05-03T13:00:00
- url: 10-34-a-trapped-knight
title: A Trapped Knight
available: 2026-04-23T13:00:00
deadline: 2025-04-27T13:00:00
- url: 10-33-slinky-physics
title: Slinky Physics
available: 2026-04-16T13:00:00
deadline: 2026-04-19T13:00:00
- url: 10-32-mcnuggets
title: McNuggets
available: 2026-04-09T13:00:00
deadline: 2026-04-12T13:00:00
- url: 10-31-alan-turing
title: Alan Turing and the £50 Note
available: 2026-04-02T13:00:00
deadline: 2026-04-05T13:00:00
- url: 10-30-ignobel-prize
title: Ignobel Prize
available: 2026-03-26T13:00:00
deadline: 2026-03-29T13:00:00
- url: 10-29-asteroid-impact
title: Asteroid Impact
available: 2026-03-19T13:00:00
deadline: 2026-03-22T13:00:00
- url: 10-28-magic-hexagons
title: Magic Hexagons
available: 2026-03-12T13:00:00
deadline: 2026-03-15T13:00:00
- url: 10-27-chess-in-church
title: Chess In Church
available: 2026-03-05T13:00:00
deadline: 2026-03-08T13:00:00
- url: 10-26-evolution-rap
title: Evolution Rap
available: 2026-02-26T13:00:00
deadline: 2026-03-01T13:00:00
- url: 10-25-pieces-of-eight
title: Pieces of Eight
available: 2026-02-19T13:00:00
deadline: 2026-02-22T13:00:00
- url: 10-24-earth-look-like
title: What does the Earth look like?
available: 2026-02-12T13:00:00
deadline: 2026-02-15T13:00:00
- url: 10-23-tongue-twisters
title: Tongue Twisters
available: 2026-02-05T13:00:00
deadline: 2026-02-08T13:00:00
- url: 10-22-smilla-sense-snow
title: Smilla's Sense of Snow
available: 2026-01-29T13:00:00
deadline: 2026-02-01T13:00:00
- url: 10-21-monkey-magic
title: Monkey Magic
available: 2026-01-22T13:00:00
deadline: 2026-01-24T13:00:00
- url: 10-20-hypatia
title: Hypatia
available: 2026-01-15T13:00:00
deadline: 2026-01-18T13:00:00
- url: 10-19-optical-illusions
title: Optical Illusions
available: 2026-01-08T13:00:00
deadline: 2026-01-11T13:00:00
- url: 10-18-proof
title: Proof
available: 2026-01-01T13:00:00
deadline: 2026-01-04T13:00:00
- url: 10-17-chrismaths
title: Chrismaths - Part 4
available: 2025-12-25T13:00:00
deadline: 2025-12-28T13:00:00
- url: 10-16-chrismaths
title: Chrismaths - Part 3
available: 2025-12-18T13:00:00
deadline: 2025-12-21T13:00:00
- url: 10-15-chrismaths
title: Chrismaths - Part 2
available: 2025-12-11T13:00:00
deadline: 2025-12-15T13:00:00
- url: 10-14-chrismaths
title: Chrismaths - Part 1
available: 2025-12-04T13:00:00
deadline: 2025-12-07T13:00:00
- url: 10-13-gravitation-waves
title: Gravitational Waves
available: 2025-11-27T13:00:00
deadline: 2025-11-30T13:00:00
- url: 10-12-waterfalls
title: Waterfalls
available: 2025-11-20T13:00:00
deadline: 2025-11-23T13:00:00
- url: 10-11-other-hamilton
title: The Other Hamilton
available: 2025-11-13T13:00:00
deadline: 2025-11-16T13:00:00
- url: 10-10-paper-mysteries
title: Paper Mysteries
available: 2025-11-06T13:00:00
deadline: 2025-11-09T13:00:00
- url: 10-09-map-mathematics
title: Map of Mathematics
available: 2025-10-30T13:00:00
deadline: 2025-11-02T13:00:00
- url: 10-08-cibara-numerals
title: Cibara numerals
available: 2025-10-23T13:00:00
deadline: 2025-10-27T15:00:00
- url: 10-07-heroic-hidden-figures
title: Heroic Hidden Figures
available: 2025-10-16T13:00:00
deadline: 2025-10-20T15:00:00
- url: 10-06-skyscrapers
title: Skyscrapers
available: 2025-10-09T13:00:00
deadline: 2025-10-12T13:00:00
- url: 10-05-philosophy-mathematics
title: The Philosophy of Mathematics
available: 2025-10-02T13:00:00
deadline: 2025-10-05T13:00:00
- url: 10-04-little-big-league
title: Little Big League
available: 2025-09-25T13:00:00
deadline: 2025-09-28T13:00:00
- url: 10-03-the-kessel-run
title: The Kessel Run
available: 2025-09-18T13:00:00
deadline: 2025-09-21T18:00:00
- url: 10-02-musical-mathematicians
title: Musical Mathematics
available: 2025-09-11T13:00:00
deadline: 2025-09-15T19:00:00
- url: 10-01-all-dark-things
title: All Dark Things
available: 2025-08-31T07:00:00
deadline: 2025-09-07T19:00:00
year11:
- url: 11-14-twelve-days-christmas
title: The Twelve Days of Christmas
available: 2025-12-04T13:00:00
deadline: 2025-12-07T13:00:00
scoreFactor: 4
- url: 11-13-gravity
title: Gravity
available: 2025-11-27T13:00:00
deadline: 2025-11-30T13:00:00
- url: 11-12-fractals
title: Fractals
available: 2025-11-20T13:00:00
deadline: 2025-11-23T13:00:00
- url: 11-11-hanging-a-picture
title: Hanging a Picture
available: 2025-11-13T13:00:00
deadline: 2025-11-16T13:00:00
- url: 11-10-a-cats-tale
title: A Cat's Tale
available: 2025-11-06T13:00:00
deadline: 2025-11-09T13:00:00
- url: 11-09-borromean-rings
title: Borromean Rings
available: 2025-10-30T13:00:00
deadline: 2025-11-02T13:00:00
- url: 11-08-colliding-vortexes
title: Colliding Vortexes
available: 2025-10-23T13:00:00
deadline: 2025-10-27T15:00:00