New from Djape!
-
Random puzzle for today!
Books
FREE Puzzles!
FREE Sudoku variants!
- Butterfly Sudoku
- Clueless Sudoku
- Consecutive Sudoku
- Diagonal Sudoku
- Flower Sudoku
- Frame Sudoku
- Greater than Sudoku
- Hyper Sudoku
- Insane Killer Sudoku
- Jigsaw Sudoku
- Killer Samurai Sudoku
- Killer Sudoku 10×10
- Loco Sudoku
- Multi Sudoku
- Non Consecutive Sudoku
- Odd Even Sudoku
- Outside Sudoku
- Sudoku Harakiri
- Sudoku Samurai
- Sudoku Straights
- Super Samurai Sudoku
- TwoDoku
Links
Sample Puzzles!
Tag Archives: subtraction combo
Subtraction combo
Udosuk, one of our visitors who is most active in giving hints for the puzzles we post here, has made a suggestion for a new solving technique for Killer Puzzles. He calls it “subtraction combo”. I’m posting his explanation here (slightly modified): I’m proposing a trick which I think many players already knew, but I’ll […]