How Have We Not Seen This Sudoku Rule Before?!

A quick note to say that the clocks changed in the UK over the weekend so, if your clocks didn't change, tonight's stream (and indeed this video) may appear to be one hour earlier than usual! ** TODAY'S PUZZLE ** A fabulous sudoku tonight featuring a "total line sum" rule that we're sure we should have seen before but we're not sure we have. The puzzle is called The X And The V Squared - Anniversary Edition and it's by .proxz14 - surely one of the hardest names to pronounce! Play the puzzle at the links below: https://sudokupad.app/wy3lbsjgfi Rules: Normal sudoku rules apply. Digits along a line may repeat and must sum to the attached value. Digits separated by an X sum to 10, while digits separated by a V sum to 5. Cells separated by a single knight's move (in chess) cannot contain the same digit. ▶ 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 Blobz). Check it all out here:   / crackingthecryptic   ▶ BLUE PRINCE STREAMS/VIDEOS ◀ Last night's stream is available here: https://youtube.com/live/vilozhngIOs ▶ CLASSIC SUDOKU 2: OUR BRAND NEW APP ◀ We've released the long-awaited sequel to one of our most popular apps (the original Classic Sudoku). The new app features 60 handmade classic puzzles, including 20 each from the Japanese puzzle masters Nikoli and Sam Cappleman-Lynes (many of which feature competely new techniques)!! Steam: https://store.steampowered.com/app/41... 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 PATREON VIDEOS ◀ We've started releasing solution videos for this month's Skunkwork's competition. We will draw the winner in the next couple of days.   / 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◀ [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 1:24 Blue Prince Stream 2:30 Sandra&Nala Competition 3:15 Happy Birthdays 7:11 Rules 9:01 Start of Solve: Let's Get Cracking #sudoku #puzzle #logicpuzzles