Logic Masters Deutschland e.V.

To celebrate our 50th resp. 150th puzzle on LMD, blackjackfitz and I have set a Pairdoku together. This puzzle has to be solved with a partner. Each solver only sees their own grid and must communicate with the partner about the possible conclusions in order to solve the puzzle together. Here you find the corresponding Pairdoku 50 by blackjackfitz. (Both grids have the exact same solution, but contain different clues.) In this puzzle, there are lines that are divided by box borders into segments such that the product of all segment sums equals exactly 150. For more detailed rules see below. We like to thank Isamook and Fahmi Sack for the testing. As always, your comments are much appreciated. We wish you joyful solving!

- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.

- Fog of War: The grid is partially covered with fog. Correctly placed digits will clear the fog around that cell. No guessing is required. (It might be necessary to rely on making progress in your partner's grid.)

- 150 lines: Each line in the grid is split by box borders into segments such that the product of its segment sums equals exactly 150. Lines may not branch or intersect other lines, but possibly overlap lines in your partner's grid.

Example: A valid line could be 78-1-415 since (7+8)x1x(4+1+5)=15x1x10=150.

Here you can solve the puzzle online:

Solve on Sudokupad