Logic Masters Deutschland e.V.

Ahoy there, mateys! It’s time to chart a course for you pirate ship to Sudoku island!

This one started as me trying to make a puzzle themed to The Goonies, but rapidly became something else entirely! I hope you enjoy :)

Rules:

You must chart a course for your pirate ship starting from the flag and ending at the palm tree. This path will form a one cell wide parity line that moves orthogonally through the grid and does not touch itself, even diagonally. Your ships course should not enter any cell touched by debris or cannonballs (white and black kropki dots). You must also avoid collisions with any rocks (circles) or lighthouses (squares).

Normal Sudoku rules apply. Place the digits 1-9 once each in every row, column, and 3x3 box.

Parity Line: Along a parity line (determined by the solver) digits alternate between odd/even parity.

Rocks: Represented in the grid by circles, rocks indicate how many of the cells adjacent to the rock are on your ships course.

Lighthouses: Represented in the grid by squares, lighthouses indicate how many cells within a chess knight’s move are on your ships course. Cells on your course that are seen (via knight’s move) by a lighthouse share the same parity (even/odd) as the lighthouse.

Rocks and Lighthouses come in pairs. Every lighthouse has a rock filled by a matching digit, and vice versa.

Debris: Represented in the grid by white kropki dots, digits in cells with debris between them are consecutive. Not all possible debris locations are given.

Cannonballs: Represented in the grid by black kropki dots, for digits in cells with cannonballs between them, one is double the other. Not all possible cannonball locations are given.

Sharks: Represented in the grid by the “>” symbol, sharks will chase your ships course. Exactly one cell touched by each shark is on your ship’s course. And, the greedy sharks mouths will open towards the larger digit.

Solve Online: Sudokupad

Best o’ luck, ya scurvy dogs