Rectangle Sums: A Wonderful New Sudoku Rule

** TODAY'S PUZZLE ** It's been a week for some brilliant and challenging puzzles. Tonight Simon attempts Rectangle Sums by FIT7Y, which is absolutely in keeping. It's a simple but fascinating ruleset that rewards a little technique and simple arithmetic. This is a great sudoku! Play the puzzle at the links below: https://sudokupad.app/xqqerfk832 Rules: Normal sudoku rules apply. Within the grid there are rectangles. Only the upper left and bottom right corners of the rectangles are shown. Each shown corner corresponds to exactly one rectangle. All digits contained within a rectangle sum to the total given in that rectangle's upper left corner. ▶ 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/46... 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... ▶ 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:   / 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 1:49 New crossword video 2:29 New viewer solve video 3:10 Sandra & Nala Competition 3:45 Happy Birthdays 7:09 Rules 8:23 Start of Solve: Let's Get Cracking #sudoku #puzzle #maths