The 79-Cell Sudoku!

*** TODAY'S PUZZLE *** A few months ago Simon tackled a Sneppix sudoku called Grouping All But One - today he tackles the sequel (you can guess the title!) and, with it, Sneppix establishes themselves as a seriously gifted setter. This is original and feels a bit like a discovery - and it deserves at least 10000x the number of solves it's had already! Play the puzzle at the links below: https://sudokupad.app/28d8kmh1jf Rules: Normal sudoku rules apply. Divide all cells in the grid except for r9c7 and r9c9 (the two grey cells) into groups of orthogonally connected cells. Every group contains exactly one cell with a white circle. The digit in a circle cell, N, indicates the number of cells in that group. All cells in a group have the same parity as N. r9c7 and r9c9 are not in any of the groups and may be any digit but are still affected by normal Sudoku rules. As an example, a circle cell containing a 4 is in a group of 4 orthogonally connected cells that are all even. Note: Adjacent cells with the same parity could still be part of different groups; the parity restriction solely affects cells within the same group. Digits separated by a white dot are consecutive. Not all dots are given. ▶ BLOBZ' 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/4601580/Cracking_the_Cryptic__The_Sudoku_Worm_of_Blobz/ AppStore https://apps.apple.com/us/app/cracking-the-cryptic/id1629992934 Android: https://play.google.com/store/apps/details?id=com.StudioGoya.CrackingTheCryptic 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.fourthwall.com/en-gbp/collections/rat-run ▶ MONDAY NIGHT'S BLUE PRINCE STREAM ◀ Here at 10pm UK time: https://youtube.com/live/uEai18xhxoA ▶ 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: https://www.patreon.com/crackingthecryptic ▶ SVEN’S SUDOKU PAD ◀ Input classic sudoku puzzles into our software. With 12 free puzzles: iOS: https://apps.apple.com/us/app/svens-sudokupad/id1570622073 Steam: https://store.steampowered.com/app/1706870/Svens_SudokuPad/ Android: https://play.google.com/store/apps/details?id=com.svencodes.sudokupad Amazon: Search for “SudokuPad” ▶ CTC FAN DISCORD SERVER◀ https://discord.gg/BbN89j5 ▶ OUR VIDEO CATALOGUE – CATEGORISED WITH LINKS◀ https://tinyurl.com/CTCCatalogue ▶SEND US PUZZLES TO SOLVE/CONTACT US◀ [email protected] 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 1:51 Rat Run yesterday 2:23 Patreon winner & incoming 4:10 Happy Birthdays 6:41 Rules 11:24 Start of Solve: Let's Get Cracking #sudoku #puzzle #maths