Logic Masters Deutschland e.V.

One Exception

Rules:

Chaos Construction: Divide the grid into 9 non-overlapping regions, each consisting of orthogonally connected cells. At least one of the regions is a 3×3 box.

Sudoku: Place the digits 1–9 exactly once in each row, column, and region.

Path: Draw a directed path starting at Zikaro the alien and ending at Planet Earth, moving orthogonally between cells without branching or overlapping. For each region, the path may enter it at most once and exit it at most once.

Circles: A circled digit N means its region is the N-th region visited by the path.

Squares: A squared digit N means the path visits exactly N cells in that region. All squared digits are different.

Outside Sums: An outside clue is the sum of digits from that edge inward up to the first region border.

Arrows: A digit in an arrow cell equals the total number of cells in all of the directions pointed by the arrows, that lie in the same region as the arrow cell (counting the arrow cell itself). Region borders block the view.

Tornado: If the path enters a tornado, it must continue straight and cannot turn.

Greater Than Symbol: Points towards the smaller number.

Parity Steering: If the path enters a circled/squared cell, its digit’s parity determines the direction of the next move: one parity forces horizontal, the other forces vertical (to be deduced). Exactly one circled/squared cell is a rule breaker, if the path visits it, treat its digit as the opposite parity for the next-move rule.

Note: Planet Earth is the final cell, so parity steering does not apply to it and it is not the rule breaker.

Solve Online

Happy solving!

Example:

Puzzle: