The Sudoku Expert's Favourite Rule

** TODAY'S PUZZLE ** Dr Logic has made a sensational sudoku called Line Dancing which one of our testers in particular loved so much she insisted we try it on the channel! It features the "exclusive" rule but in a slightly new way and relying on rather beautiful graphics... Play the puzzle at the links below: https://sudokupad.app/7d1rkyffv3 Rules Normal sudoku rules apply. Along a red line, digits alternate parity (ie odds/evens must alternate.) Along a lavender line, any pair of digits that are the same distance from the centre of the line (marked by a spot) sum to the same total. For odd length lines, the total is the central digit. Digits on a pink line form a non-repeating set of consecutive digits, in any order. Adjacent digits along a green line differ by at least 5. Each line belongs to a group. These groups are denoted by smaller coloured lines within the larger lines. The groups are: 'white, black, blue, red'. Within a group, digits placed on these lines cannot repeat (e.g, there cannot be two 4s in red, etc.) If two digits are separated by a black dot then one digit is double the other; if two digits are separated by a white dot those digits are consecutive. ** BRAND NEW COMPETITION ON PATREON ** On 1 October we released a brand new Sudoku Hunt competition on Patreon. There's 8 puzzles to solve by 20 October to win the chance to come onto the channel and solve a puzzle with us! Simon has also completed a series of videos (7 hours!) attempting a very difficult cryptic crossword called Periodic Location by Nebuchadnezzar.   / crackingthecryptic   ▶ LAST NIGHT'S STREAM: LORELEI AND THE LASER EYES ◀ You can (re)watch tonight's stream of Lorelei and the Laser Eyes here: https://youtube.com/live/MgskZaj-fkU ▶ ZETAMATH'S WORM: OUR BRAND NEW APP ◀ We've released a brand new collection of sudoku puzzles by Blobz. The worm features 12 connected sudokus and is a great way to enjoy more creations from this popular constructor: Steam: https://store.steampowered.com/app/47... AppStore https://apps.apple.com/us/app/crackin... Android: https://play.google.com/store/apps/de... All our apps can be found at our website with links to all outlets: https://www.crackingthecryptic.com/apps ▶ NEW MERCHANDISE INCLUDING RAT RUN GOODIES ◀ https://cracking-the-cryptric-shop.fo... ▶ SIMON & MARK ATTEMPT BLUE PRINCE: THE SUDOKU ◀ This new epic (and epically long) video is now on Patreon (as well as our monthly sudoku hunt competition by Sandra & Nala). Check it all out here:   / crackingthecryptic   ▶ SVEN’S SUDOKU PAD ◀ Input classic sudoku puzzles into our software. With 12 free puzzles: iOS: https://apps.apple.com/us/app/svens-s... Steam: https://store.steampowered.com/app/17... Android: https://play.google.com/store/apps/de... Amazon: Search for “SudokuPad” ▶ CTC FAN DISCORD SERVER◀   / discord   ▶ OUR VIDEO CATALOGUE – CATEGORISED WITH LINKS◀ https://tinyurl.com/CTCCatalogue ▶SEND US PUZZLES TO SOLVE/CONTACT US◀ crackingthecryptic@gmail.com Snailmail: Mark Goodliffe, Box 102, 56 Gloucester Road, London SW7 4UB ▶FOLLOW US◀ Twitter: #crypticcracking @crypticcracking Instagram @crackingthecryptic ▶Credits◀ Music: Lucy Audrin (Piano): Mozart's Sonata no 16; and Mark’s outro music by Riffclown. SOFTWARE: Thanks to Sam Cappleman-Lynes and Sven Neumann Logo: Melvyn Mainini Opening Credits: Burak Mescioğlu ▶ Contents Of This Video ◀ 0:00 Intro music and puzzle introduction 2:00 ‪@numberphile‬ 4:03 Dickens competition incoming 5:29 Rules 11:17 Start of Solve: Let's Get Cracking #sudoku #puzzle #maths