Logic Masters Deutschland e.V.

It's the weekend, so I thought I'd post a second puzzle that I've had completed for a while. I know the Suguru I posted yesterday isn't everyone's cup of tea (and frankly, it isn't mine either), but this puzzle is much more up my alley, and is hopefully somewhat accessible. I think you'll enjoy this one a lot. Expected difficulty between 4 and 5.

The rules for this one may seem a little complicated, but they're more unusual than a difficult set of criteria to keep track of. In my opinion, once you internalize them, they become very natural, and I think many more puzzles with a wide variety of logic could be made with this same ruleset.

1) Normal Chaos Construction rules apply. Place one of each digit 1-9 in every row, column, and region, but the regions must be determined by the solver. That is, divide the grid into 9 orthogonally connected groups of 9 cells.

2) There are three properties: Red, Yellow, and Blue.

The Red property indicates the number of cells in the same region as the cell in the surrounding 3x3 area.

The Yellow property indicates the number of cells NOT in the same region as the cell in the surrounding 3x3 area.

The Blue property indicates the number of distinct regions in the surrounding 3x3 area.

3) A cell with a colored circle in it indicates that cell satisfies ONLY the properties of the colors required to create the color of the cell. For example, a cell with a red circle satisfies red, but NOT yellow or blue. A cell with a green circle satisfies both yellow and blue, but NOT red. A cell with a white circle satisfies all three colors.

4) Not all circles are necessarily given.

Here is a 6x6 example puzzle to illustrate the rules. If you give this a try, you can realize how particular arrangements of these circled cells can be surprisingly forcing.

CTC app link to the example

f-puzzles link to the example

Below is the full puzzle.


CTC app link to Impressionist

f-puzzles link to Impressionist