Recent Changes

V3.1.1 2007-12-05

• By popular demand... reversed the change that caused the "effects" toolbar to only use existing pencil marks. If the cell contains no pencil marks at all, the effects are shown based on the single rule of Sudoku.

V3.1 2007-12-03

• Limited the length of XY chains to 12 cells or fewer, or else the XY chain solver could recurse far too deeply during puzzle creation, using an excessive amount of time and processing power.

V3.0 2007-12-01

• Added the XY-wing solving technique.
• Added the XYZ-wing solving technique.
• Added the XY-chain solving technique.
• Added the ability to colour different numbers in different colours. See the [...] button next to the default highlight on the colours tab of the options dialog.
• Added the ability to highlight multiple numbers at once. To highlight a second (or third, or fourth etc) number, hold down the control key while clicking the highlight button. (You'll probably want to assign different colours to each number first, see the previous change.) Sorry, but there isn't a keyboard short-cut for this function.
• When printing puzzles from the library, give the option of printing several copies of multiple pages, along with their solutions.
• Added the ability to load and print from Sudoku Collection (.SDC) files. These are files that can contain many sudoku puzzles. This allows for a collection of puzzles that aren't deleted as they're solved. (Contrast this to the library which is a temporary storage place for puzzles that are yet to be played.)
• Added the ability to save puzzles in Simple Sudoku and Sudocue formats. (It was already possible to load puzzles in either format.)
• Added comma-separated and tab-separated clipboard formats. The latter is useful for pasting into spreadsheets.
• The Count Solutions function has been speeded up considerably.
• It no longer de-selects the "enter pencil marks" option when the puzzle is completed.
• It no longer de-selects any highlight when all pencil marks are deleted.
• The "effect" buttons now show effects strictly according to the cell content and pencil marks. Previously, if there were no pencil marks, it would create a set from the single rule of Sudoku, and then highlight from them.
• If you use a character such as X to represent empty cells, counting and then showing the solutions could omit one of the solutions and show the puzzle instead. This has been corrected.
• The copy-image-to-clipboard function now excludes the area surrounding the puzzle from the image.
• Fixed the missing "untranslation" of menu options when English is chosen instead of the default language for the current locale.
• Fixed a problem with drawing menus under Windows Vista.
• When displaying the number selector, don't attempt to use the built-in transparency of newer versions of Windows unless running in 32 bit colour mode.
• Corrected an occasional problem with the chain reported for colouring. The eliminations were correct, but the chain was reported incorrectly.