Logic Masters Deutschland e.V.

Index lines are the constraint I've explored the most and there is something about their power that is really cool, but most people don't know about them. I made this 4 pack of 6x6 to explore some variants I've never done before using them. Sorted roughly in order of difficulty. Many thanks to the testers, especially marty_sears who has encouraged me to get this pack made.

For all the following puzzles, lines are Index Lines:

Index Lines: The digit in the Nth cell along the line (starting from the diamond) indicates the position along the line where the digit N appears. For example: 2143 would be a valid line (with 2 as the diamond); the 1st digit, 2, indicates that the 2nd digit is a 1, and so on.

Other rules for each puzzle are given in the puzzle itself.

#1: Self Plagiarism (Self Reference Lots)

The easiest of the pack, but a good introduction to the concept. Circles count the cells on the line that reference themselves. Estimated difficulty 2*.

#2: Looped In (Loop Building)

Box borders divide the loop into index line segments. Estimated difficulty 3*.

#3: Guidelines (Chaos Construction)

Build regions to divide the lines into index line segments. Estimated difficulty 3.5*.

#4: Secondary Source (Schrödinger Cells)

Schrödinger cell sudoku, and an S-cell on the line refers to both digits inside it. Estimated difficulty 4* (lower if you are used to S-cells).

All feedback (positive or critical) appreciated!