Solving Techniques

Version 1.4 utilizes 34 different solving techniques. They are:

Singles: naked

Singles: hidden

Doubles: naked

Doubles: hidden

Triples: naked

Triples: hidden

Quads: naked

Quads: hidden

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)

Jet Sudoku also uses BRUTE FORCE but I don't consider that a valid solving technique. BRUTE FORCE is only used to prove validity

when the above techniques fail to produce a solution.

There are lots of other advanced solving techniques out there. Jet Sudoku version 1.4 doesn't use them but perhaps future versions will. I have experimented

with many other advanced techniques. Many are either redundant or too complex (for me anyway).

Several of the above techniques are obsolete or at least redundant. When using the default order of solving techniques, I've yet to find a puzzle

that requires finding a Squirmbag, X-loop, or COLORS technique to produce a solution. If you find such a puzzle, please send it to me!

I will probably be adding more solving techniques in the future. I you have any suggestions please contact me at jetsudoku@gmail.com

Singles: naked

Singles: hidden

Doubles: naked

Doubles: hidden

Triples: naked

Triples: hidden

Quads: naked

Quads: hidden

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

Jet Sudoku also uses BRUTE FORCE but I don't consider that a valid solving technique. BRUTE FORCE is only used to prove validity

when the above techniques fail to produce a solution.

There are lots of other advanced solving techniques out there. Jet Sudoku version 1.4 doesn't use them but perhaps future versions will. I have experimented

with many other advanced techniques. Many are either redundant or too complex (for me anyway).

Several of the above techniques are obsolete or at least redundant. When using the default order of solving techniques, I've yet to find a puzzle

that requires finding a Squirmbag, X-loop, or COLORS technique to produce a solution. If you find such a puzzle, please send it to me!

I will probably be adding more solving techniques in the future. I you have any suggestions please contact me at jetsudoku@gmail.com