Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Gray lines are between lines; digits on the lines must be strictly between the digits in the circles at the ends. 159 rules apply: Each digit in column 1 indicates the position of 1 in the same row. (For instance, if row 4 column 1 is a 3, then row 4 column 3 is a 1.) The same is true in columns 5 and 9 regarding the digits 5 and 9, respectively.

Continuing the series of "empty 159" puzzles with between lines; previous entries include thermo, German Whispers, Renban, Lockout Lines, and X pairs.

F-puzzles link

CTC link