How can i remove this numbers? (Sudoku killer app). : r/sudoku

Killer Sudoku by Sudoku.com - Apps on Google Play

Killer Sudoku by Sudoku.com - Apps on Google Play

Killer Sudoku by Sudoku.com - Apps on Google Play

PDF) General variable neighborhood search for solving Sudoku puzzles: unfiltered and filtered models

How easy is it to write a program to solve any Sudoku puzzle? Do you have one on GitHub I can test out? - Quora

Obvious triples - Sudoku technique

TouchArcade

What am I missing here? I've applied all the rules I know in killer sudoku including both versions of the 45 rule. But regardless I'm still missing something. Probably something obvious, but

diagonal sudoku PuzzleNation.com Blog