Sukaku Explainer v1.18.1

Fixed #98 bug when unselecting v1.2.1 mode @SudokuMonster
Fix #99 (solved cell color) and #101 (undo) @1to9only
Spelling and Typo fixes Various contributors including @grantm
Improvement: Commits #148922f and #f7546a1 from @dclamage fork: Improved Non consecutive code and improved weak link search in Anti chess Variants modes
Fixed Bug in Strong links algorithm that caused incorrect eliminations in some rare cases of Sudoku variants (#111 1st in bug report #114) @SudokuMonster
Minor cosmetic changes @SudokuMonster

Sukaku Explainer v1.17.7

Fixed minor bug in SudokuFrame options
Adjustments to Warning Hints reflecting variants
Minor Generator improvements
Updated Strong Links Turbot Fish with X-Loops/Rings
Added Ferz NC
Added TUVWYZ and UVWXYZ
Update default solving techniques
Fixed issue with default technique selection
Uniqueness can be used in Forbidden Pairs puzzles
Fixed windows regions highlighting
Fixed pencilmarks issue after loading sudoku from file
Update settings release after Fix #93 #94
Cosmetic Hint changes

Sukaku Explainer v1.15.10

Fixed bug 4d5d558
Fixed issue #82

Sukaku Explainer v1.15.8

Added: Forbidden Pair (FP) Variants: Non Consecutive (NC and NC+), Anti-King and Anti-kNight
Added: Toroidal board feature (Extends reach of Forbidden pairs)
Added: NC techniques: NC Forcing cell and Locked NC
Enhancement: Last used Variants and options used are loaded back on startup
Minor Bug fixes

Sukaku Explainer v1.14.11

Command line minor bug fixes

Sukaku Explainer v1.14.7

Variants supported: Disjoint Groups (DG, P), Diagonals (X), Windows (W), Girandola, Center Dot, Asterisk
New Menu: Variants
Command line support for Variants
Ability to copy to clipboard Grid and Pencilmarks with variant regions
New variant targeting techniques added: Generalized Intersections, Generalized Naked Sets (Pairs, Triplets …)
Certain minor GUI modifications (including hints) to accommodate variants including multi-coloured variants

Sukaku Explainer v1.11.1

Added ability to change interface to use Latin Square

Sukaku Explainer v1.10.4

Ability to rate puzzles similar to Sudoku Explainer v1.2.1 (GUI and Command line)
Solved cells appear in blue font. Original (given) Solved cells appear in Black font
Ability to use a New rating system for puzzles
New techniques added (4, 5 and 6 Strong links) these are disabled by default
GUI window changes to indicate (New rating mode, Sudoku explainer 1.2.1 mode, …)
GUI experimental menu for Sudoku variants (Still inactive)_

Sukaku Explainer v1.8.2

Added and improved the "2 strong link technique" which catches 2-String Kites, Skyscrapers & Turbot cranes to include Grouped Strong links in Row, Column or Block including "Empty rectangle" which was started by adapting the changes from SunnyShine
Added and improved the "3 strong link technique" which catches 3-String Kites, 3 Skyscrapers & 3-Turbot cranes to include Grouped Strong links in Row, Column or Block including "Empty rectangle"
Modifications/cleanups/enhancement of code from @dobrichev

Sukaku Explainer v1.6.1

Added: WXYZ and VWXYZ wings techniques. 2-Strong-linked fish techniques and 3 -Strong-linked fish techniques (Skyscraper, Kite and Turbot) also added.
Enhancement: Version and Release date can now be displayed in command line solver output.
Bug fix: Phantom candidate selection issue in GUI
Enhancement: A few more options to generate puzzle types.