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SuDoku
Gold
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SuDoku Gold creates the highest
quality, symmetrical puzzles with a guaranteed single
solution. All our puzzles can be solved by logic, because
that is how they are generated. No patterns, templates or
base solutions are used - each is created from scratch
and will be unique. Created puzzles are rated as either
'easy', 'medium', 'hard' or 'hardest'. The 'hardest'
level of difficulty will require analysis and reduction
of options at least once at some point. Press the 'New'
key to cycle through these levels to get to one you
desire.
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Use the cursor keys or the
mouse to position the blue highlight on the cell you want to
modify.
Press 1-9 to fill
the cell with that digit, or 'Del' / 0 (zero) / spacebar to
remove that entry. By mouse: click on the required number on the
popup selector ('X' to remove an entry); a double click can also
be used to remove an entry.
The 'Clear' button
removes all your entries.
The 'Solve' button
determines the solution using logic.
The 'Hint' button
inicates a cell that contains a single.
To insert 'pencil mark'
options (digits that might
go in a particular cell), use the control (Ctrl) key : hold the
control key down while typing a number. Repeat to remove, or
simply insert as normal. By mouse: use the right
mouse button to select from the popup (or press and hold the Ctrl
key before invoking the popup). Pencil marks that are no longer
required are automaticly removed.
Solve
any 9x9 Sudoku !
Click the 'Clear'
button until the grid is completely empty, fill in the puzzle as
desired and then click on the 'New' button to set your entries as
a puzzle (makes the entered cells as clues). You can now play or
solve with the 'Solve' button.
You can also enter a puzzle by text - paste into the text area
then click on the 'New' button. After a puzzle is solved, the
solution will appear in the text area. Can understand almost any
textual representation.
Rules
The grid is
composed of 9 smaller boxes that can each hold 9 digits. These
3x3 boxes, and every row and column of 9 digits, must contain all
the numbers 1-9, once only. This is the only 'rule' of SuDoku.
This implementation
will indicate if you enter a number that breaks these rules.
However, you can mistakenly add a number that does not break the
rules but will prevent you from finding the complete solution.
Therefore, try to add a number to the grid only when logic tells
you that it MUST go there, based on the numbers already supplied
(the 'clues').
To get a feel for
how one can deduce what numbers can be entered where, try using
the 'Marks' function (press the 'm' key on your keyboard to
toggle on/off). Pencil marks shown in bold type indicate that
that number is effectively the solution number for that cell. These automaticly generated
pencil marks are updated as you enter or remove numbers. With
experience, you will be able to complete puzzles without this
help - just using manual pencil marks when you are stuck. The
in-built solver uses logic to reduce the pencil marks to find
definite candidates that it can enter.
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| Purchase Due to
overwhelming popularity, this software is now
available for purchase for use at home. This
version includes printing, being able to save and
restore and a large quantity of new puzzles.
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need to be online
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Free upgrades
Name, save, load and print puzzles
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