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You can solve sudoku puzzles with Sudoku Insight with more or less
mouse clicks, the choice is yours.
A cell can contain:
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A (big) number.
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A mask, made of (small) numbers. It can contain one or more numbers
from 1 to 9.
Enter numbers moving the mouse pointer over a cell and pressing a numeric key from 1 to 9. If 0 or SPACE are pressed, the cell is cleared.
Click on a mask element to remove / recover it.
Solve as much as possible
This will try to solve the puzzle in one step, if there are ambiguities you will have
to continue manually.
Solve by discarding, orphans or pairs
A cell is influenced by all other cells which are in the same row, column or block.
A mask element is discardable if exists an influenced cell with the same number
as mask element. Solving by discardables will remove discardable mask elements.
A mask element is orphan (aka isolated) if does not exist a influenced cell with
the same number as mask element or (big) number. Solving by orphans will promote
the orphan mask element to (big) number.
Two mask elements are a pair if exists a influenced cell with the same pair.
Solving by pairs will remove the pair from masks in all influenced cells.
Visual Helps
The visual helps provide different coloring for discardables, orphans and pairs. You can turn them on and off.
If you turn all 3 off, you will have to solve the puzzle manually. If you make a mistake, the offending cells will
be highlighted in magenta.
If discardable elements are shown and you click on a number, all discardable mask elements in influenced cells
will be removed.
If orphans are shown and you click on one, it will be promoted to (big) number.
If pairs are shown and you click on one of them, elements in pair will be removed from influenced cells.
Step-to-step History
These buttons let you navigate through all steps of your solving process.
New, Open and Save
You can discard your current sudoku and start a blank one at any moment.
Save your sudokus, unsolved or solved, in text format for later retrieval. Note that mask values are not saved.
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