Logic Masters Deutschland e.V.

Click image to play in SudokuPad

Hello.

Normal Sudoku rules apply.

Chaos Construction: The nine regions of the grid are irregular and orthogonally connected. Their shapes are not given and must be deduced by the solver.

Arrow Cell Vision: The digit in an arrow cell indicates how many cells of its own region it can “see” in straight lines (up, down, left, right) including itself. , until another region blocks the view. Each arrow belongs to a different region.

Digits with an X sum to 10 and belong to different regions.

White dot: The two cells are consecutive and belong to different regions.

Black dot: The two cells are in a 2:1 or 3:1 ratio and belong to the same region.

BitClocks:

Each BitClock consists of an arrow cell and the four orthogonally adjacent cells surrounding it.

The digit in the arrow cell encodes the parities (Odd/Even) of those four neighbouring cells.

Even digit = ON (E) 

Odd digit = OFF (O)

Each digit corresponds to a specific 4-bit parity code, read left to right in the table below.

The arrow on the arrow cell indicates the first neighbour, and the code is applied clockwise around the four adjacent cells.

Example: If the arrow cell contains 3, its code is OOEE.

Starting from the direction the arrow points and moving clockwise, the four neighbouring cells must be Odd, Odd, Even, Even.

Digit Codes:


1 → OOOE


2 → OOEO


3 → OOEE


4 → OEOO


5 → OEOE


6 → OEEO


7 → OEEE


8 → EOOO


9 → EOOE

*For BitClocks touching the grid edge: cells outside the grid are treated as having parity determined by their row or column index. Cells outside odd numbered rows and columns are odd, cells outside even numbered rows and columns are even.

These outer cells are never filled; the outer border is only used for parity reference and marking.

Have fun.