One Does Not Simply Explain Sudoku Set Theory

We love today's puzzle which is called Killer Clones by Scott Strosahl!  Scott also set the sudoku challenge we'll be releasing on Patreon this Sunday (Valentine's Day!).  You can tonight's sudoku here:

https://app.crackingthecryptic.com/su...

Rules:
Normal sudoku rules apply. In cages, digits must sum to the small clue in the top left corner of the cage.  Digits cannot repeat within a cage.  Similarly coloured dominoes are clones of each other and must contain the same digits in the same orientation.

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You can play our brand new Groundhog Day sudoku challenge (and many others) on Patreon.  Also available is Mark's latest crossword solve and, on Sunday, Scott's new sudoku challenge!

Patreon: crackingthecryptic

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▶ OUR NEW KILLER SUDOKU APP IS OUT ON ALL PLATFORMS◀
https://apps.apple.com/us/app/killer-...
https://store.steampowered.com/app/14...
https://play.google.com/store/apps/de...

▶  SIMON REACTION BOARD (!) ◀
With thanks to Andrea for creating this :)
https://simonreacts.avris.it/

▶ OUR MIRACLE SUDOKU APP IS OUT ◀

Steam: https://store.steampowered.com/app/13...

App Store:  https://apps.apple.com/us/app/id15273...
Android:  https://play.google.com/store/apps/de...

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NEW:  Guide To Our Discord Server:
https://tinyurl.com/CTCDiscordGuide

▶ OUR BACK CATALOGUE – ALL CATEGORISED WITH LINKS!◀
https://tinyurl.com/CTCCatalogue

▶ OUR NEW THERMO SUDOKU APP IS OUT!◀
AppStore: https://apps.apple.com/us/app/thermo-...  
Android:  https://play.google.com/store/apps/de...
Steam: https://store.steampowered.com/app/13...  

▶ NEW CRACKING THE CRYPTIC MERCHANDISE◀
https://teespring.com/en-GB/stores/cr...

▶ OUR CHESS SUDOKU APP IS NOW OUT!◀
AppStore:  https://apps.apple.com/us/app/chess-s...
Steam: https://store.steampowered.com/app/12...
Android: https://play.google.com/store/apps/de...

▶TRY OUR CLASSIC SUDOKU APP◀
AppStore: https://apps.apple.com/us/app/classic...
Steam: https://store.steampowered.com/app/11...
Android: https://play.google.com/store/apps/de...

▶TRY OUR SANDWICH SUDOKU APP◀
AppStore: https://apps.apple.com/us/app/sandwic...
Steam: https://store.steampowered.com/app/11...  
Android: https://play.google.com/store/apps/de...

▶SEND US PUZZLES TO SOLVE/CONTACT US◀
[email protected]

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Twitter: #crypticcracking
@crypticcracking
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▶SOFTWARE◀
Play the puzzle in the video by clicking the link under the video (above).  We are building a website which will allow you to enter your own sudoku puzzles into the software and this is coming soon!

▶Logo Design◀
Melvyn Mainini

▶ABOUT US◀
Hi! We're Simon Anthony and Mark Goodliffe, two of the UK's most enthusiastic puzzle solvers. We have both represented the UK at the World Sudoku Championships and the World Puzzle Championships.

Thank you for watching!
Simon and Mark