The 5 Colour Theorem

*** TODAY’S PUZZLE *** Some solvers are calling this sudoku the best they’ve ever solved. It’s called Serial Killers and it’s the work of starwarigami. Not only is it extremely colourful but it’s a work of arithmetic art. Play the puzzle at the link below: Rules: Normal sudoku rules apply. Digits may not repeat in a cage. The totals of individual cages of the same colour form a set of consecutive numbers, in any order. *** NEW KIDS SUDOKU HUNT COMING TOMORROW *** A new sudoku hunt, Knightmare On Sudoku Street, was released on 1 April. It features 19 new puzzles by the Sudoku Skunkworks! Join us on Patreon for as little as $2 a month to play. *** NEW GAS PACK: VOLUME 2 IS OUT *** The new GAS (Genuinely Approachable Sudoku) pack is out on all platforms here: 60 original puzzles by Clover, Bill Murphy and Philip Newman!! Earn party hats and dinosaurs with these brand new puzzles! *** JOIN OUR SUDOKU CLUB ON PATREON *** A new sudoku hunt, Alice’s Adventures In Sudokuland, has been released on 1 March featuring puzzles by Panthera, TheAsylum & Montinox. Remember that patrons gets access to their own special channel on the CtC Fan Discord server - where you can find hints ;) Joining us on Patreon costs as little as $2 a month. ▶ SUDOKU PAD - Use Our Software For Your Puzzles ◀ You can input classic sudoku puzzles into our software and help support Sven, the programmer responsible for the wonderful user interface we all use to play these puzzles everyday. The app also comes with 12 handmade puzzles from us: iOS: Steam: Android: ALSO on Amazon: Search for “SudokuPad” *** ORDER OUR UPCOMING BOOK HERE *** ▶ Contact Us ◀ Twitter: @Cracking The Cryptic email: crackingthecryptic@ Our PO Box address: Simon Anthony & Mark Goodliffe Box 102 56 Gloucester Road London SW7 4UB (Please note to use our real names rather than ’Cracking The Cryptic’.) ▶ SUDOKU PAD - Use Our Software For Your Puzzles ◀ You can input classic sudoku puzzles into our software and help support Sven, the programmer responsible for the wonderful user interface we all use to play these puzzles everyday. The app also comes with 12 handmade puzzles from us: iOS: Steam: Android: ALSO on Amazon: Search for “SudokuPad” ************************************************************** ▶ CTC FAN DISCORD SERVER◀ ▶ OUR BACK CATALOGUE – ALL CATEGORISED WITH LINKS!◀ ▶ *NEW* CRACKING THE CRYPTIC MERCHANDISE◀ ▶SEND US PUZZLES TO SOLVE/CONTACT US◀ crackingthecryptic@ ▶FOLLOW US◀ Twitter: #crypticcracking @crypticcracking Instagram (for how to solve daily clues from The Times):