Colour Killer Sudoku — Knight Features

The normal rules of Killer Sudoku apply. In addition, the grid is divided into coloured cells. Cells of the same colour must also contain all the digits from 1-9.

An Archetype Theory of Puzzles

Myriad — Knight Features

Colour Killer X Sudoku — Knight Features

Sudoku & Variants by Logic Wiz – Apps on Google Play

Puzzle Maker Pro - Checkerboard Sudoku

I made an app! No bullshit Sudoku app with lots of hidden niceties for iPhone, iPad and Mac (SudoKoi) : r/sudoku

Sudoku APK for Android Download

How to solve a magnificent Anti- Knight Killer Sudoku ?

Killer Sudoku - Puzzle Games • Game Solver

Logic Wiz released today a new version : r/sudoku

Anti Knight Sudoku

Sudoku - Free Classic Sudoku Puzzles Game Group