Descartes Enigma is a game of logic and deduction, based
upon the puzzle created in Japan by Tetsuya Nishio, and popularized in
the United States by Games Magazine's World of Puzzles magazine as
"Paint By Numbers." In the United Kingdom, the game is known as
Nonograms. You're presented with a puzzle which conceals a hidden black
& white picture, and you must discover the picture using the
row and column clues which give you information about the locations of
the black "pixels" in the picture.
The first couple of deductions are quite easy. The 4th column has a group of 10 blacks, and since the puzzle is only 10
squares high, the entire column is black. The 4th and 5th rows each have a group of 9 blacks. There's only two ways to position 9 black
squares within a row of 10 squares, and in both cases all but the end squares are black. (In other words, we know where 8 of the 9 black
squares are, because those squares are black in all possible ways that the 9 squares can be positioned in the row.) Now, with those deductions
made, we can determine a few squares that have to be white. Since the 3rd row has ONLY groups of 1's, the black square in the 4th column of
the 3rd row must have at least one white square on each side (because if one of the other groups of 1 black squares were positioned right
next to this one, then it would be a group of TWO rather than a group of ONE). The same thing applies to the 8th and 9th rows. Lastly,
looking at the 3rd column, the two black squares can ONLY be the group of TWO, and so must have at least one white square both above and below.
ADDITIONAL ENIGMA PUZZLE SETS
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The demo and licensed versions are identical, except that the demo version has limited numbers of puzzles, and the licensed version may have additional support files (like extra image sets). So, if the demo version works for you, the licensed version will, too. If the demo version doesn't work for you, neither will the licensed version.
Generally, you don't need to un-install a demo version before installing the licensed version. The licensed version will install right over the top of the demo version and use all of the settings you've already created with the demo version.
NOTE: You can not upgrade your licensed version by installing a newer demo version over the top of the licensed version. You would just end up with a demo version.