The Rule of 45 of Killer Sudoku (innies and outies)
Descrição
This tip is probably the most important solving technique of Killer Sudoku, one that will save you a lot of time. It does involve some math, but very simple one. Basically, the whole story is that …
Klein aber Fies: Jigsaw Killer — Rätselportal — Logic Masters Deutschland
![The Rule of 45 of Killer Sudoku (innies and outies)](https://external-preview.redd.it/BNBHu1b9sMBPj-nRBIilghffm3FBrpojadVS6LSk5Jo.png?auto=webp&s=ce3bc8870d580e6574a244f0cd171d7720bba26b)
Getting started on this killer sudoku via outies : r/sudoku
![The Rule of 45 of Killer Sudoku (innies and outies)](https://preview.redd.it/p9bzl3zcaoh81.jpg?auto=webp&s=abbb33305f93cac1652d5de6bf2ab6a63b721683)
In general, what should be my solving 'routine' for killer sudokus like this? Also whats the first digit? : r/sudoku
![The Rule of 45 of Killer Sudoku (innies and outies)](https://www.gmpuzzles.com/images/blog/GM-OutsideEx.png)
Outside Sudoku R&I - The Art of Puzzles
![The Rule of 45 of Killer Sudoku (innies and outies)](https://i.ytimg.com/vi/rtXryoksiOY/maxresdefault.jpg)
Ninja Sudoku - Logic hint - Apps on Google Play
Sudoku Creation and Grading, PDF, Puzzles
![The Rule of 45 of Killer Sudoku (innies and outies)](https://i.ytimg.com/vi/oKkC_sFXXjk/maxresdefault.jpg)
Killer Sudoku Rules
Sudoku Creation and Grading, PDF, Puzzles
![The Rule of 45 of Killer Sudoku (innies and outies)](http://jcbonsai.free.fr/sudoku/JSudokuUserGuide/img/Innies8.png)
JSudoku - Innies/Outies Techniques
![The Rule of 45 of Killer Sudoku (innies and outies)](https://sudokusolver.com/images/main/techniques-killer-04.gif)
Sudoku Solver - Killer Sudoku Multiple 45 Rule Solving Technique
![The Rule of 45 of Killer Sudoku (innies and outies)](http://jcbonsai.free.fr/sudoku/JSudokuUserGuide/img/Innies6.png)
JSudoku - Innies/Outies Techniques
![The Rule of 45 of Killer Sudoku (innies and outies)](https://sudopedia.sudocue.net/images/c/c4/Sudoku_nd2.gif)
Nate Dorward II - Sudopedia
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