Irregular Killer Sudoku — Knight Features

The normal rules of Killer Sudoku apply, except, the usual 3x3 blocks have been replaced by irregularly shaped, coloured blocks (which must contain all the digits from 1-9).

Sudoku Exchange

Extra Region Killer Sudoku — Knight Features

Godoku - Killer Sudoku Solving Techniques and Tips

Location of GMPP for TCT, SuDoKu, and HS PVAs for case 3 under

How to Solve Anti-Knight Sudoku Puzzles

Sudoku - Wikipedia

Sudoku — Games & Puzzles — Knight Features

Techniques for Knight Sudoku

X-Factor Killer Sudoku — Knight Features

Anti Knight Sudoku Solving Techniques and Puzzles