Logic Masters Deutschland e.V.

Chaos Construction: Divide the grid into 9 region, each comprised of 9 orthogonally connected cells. Every row, column, and region must contain the digits 1-9 once each.

Chaotic Choice: There are two versions of this puzzle. Each version uses a different definition for a 'region clue' (see below).

Arrows: The digit in an arrow-containing cell defines how many 'region clues' can be seen from that cell. In one version of the puzzle, a 'region clue' is a region border (not including the grid edge). In the other version, a 'region clue' is a cell in the same region as the arrow cell (not including the arrow cell itself, and region borders block vision).

If a cell contains multiple arrows, the cell's digit in the total number of 'region clues' seen in all indicated directions.

A cell with multiple arrows may see no 'region clues' in one or multiple indicated directions (as long as 1 or more 'region clue' can be seen in at least one of the indicated directions).

Solve the 'Region Borders' version here

Solve the 'Same Region Cells' version here

Solve both versions side-by-side here