Logic Masters Deutschland e.V.

Story

Crisis on planet Palin! The life support control wiring in Dome 19 has been consumed by a rogue outbreak of nanobots. All that remains are the unlabeled center and endpoints of each wire. Can you restore this critical life support control grid?

Rules

Normal sudoku rules apply.

Drawing Dome Lines: Place the digits 1-9 once each in the circles which lie at the center of dome lines. Dome lines have length one less than twice their center digit. Dome lines of length greater than one grow orthogonally from cell to cell from their center and end in a pair of endpoint cells marked by squares. Dome lines may not cross themselves or each other or share cells. Digits on a dome line an equal number of steps from the center may not reside in the same row, column, or 3x3 box.

Palindrome Lines: Dome lines with center digits 2, 3, 4, or 7 are palindrome lines. Digits on a palindrome line read the same forwards and backwards.

Dome 19 Lines: Dome lines with center digits 5, 6, 8, or 9 have the property that the sum of the center digit plus the two endpoint digits totals 19.

Kropki: Cells joined by a white kropki dot must have a difference of one. Not all white kropki dots are given.

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