Sudoku Tutorial

Glossary

Singles: naked
Singles: hidden
Doubles: naked
Doubles: hidden
Triples: naked
Triples: hidden
Quads: naked
Quads: hidden
Naked vs Hidden techniques
Locked candidates
X-Wing
XY-Wing
XYZ-Wing
W-Wing
Swordfish
Jellyfish
Squirmbag
Finned Fish (finned X-Wing)
Finned Swordfish
Finned Jellyfish
Skyscraper
2 String Kite
Turbot Fish
X-Loop
Empty Rectangle (or Hinge)
Colors (Conjugate Pair Coloring)
X-Chain *
XY-Chain *
Uniqueness Test (only available on valid puzzles)
Unique Corner
Unique Side
Hidden Rectangle
Unique Rectangle type 4
BUG

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