Sample sudoku.(How to play).Level.
NEWS
- 13 Sudoku exercises.
- 13 What is xy chain.
- 12 What is xy chain link.
- 11 What is xy wing.Three kinds of xy wings.
- 10 What is Finned jellyfish.
- 9 What is Finned swordfish.
- 8 What is Finned fish.
- 7 What is xy-wing part 2.
- 6 What is xy wing. And what is Remote Pairs.
- 5 What is xy-wing.
- 4 What is Remote Pairs.
- 3 What is broken x wing.
- 2 What is Swordfish. And what is Jellyfish.
- 1 What is x wing. And what is two kinds of Swordfish.