Logic Masters Deutschland e.V.

Set for a Scojo Setting Saturday prompt challenge given by Calvinball about making new mirror puzzles. My initial version was not really good, but upon showing it to aqjhs we had an extremely fast collaboration that turned out a very nice puzzle. Thanks to all that tested!

Initial inspiration for the combination came from the excellent puzzle Croma by Nordy and Math Pesto. Their beautiful setup with double arrow between line duality made me want to explore the slightly looser connection that mirrors could offer.

• Normal sudoku rules apply.

• Entropy Mirror:

  • Each cell has a digit in the same set from [123], [456] or [789] as the cell reflected along the marked yellow diagonal (e.g. if r2c6 is in the [456] class, r6c2 is also in the [456] class).

• Double Arrows:

  • The digits on a solid blue line between two circles must sum to the same total as the digits in the two circles.

• Between Lines:

  • Digits on a hollow red line must be strictly between the digits in the circles at the ends of the line.
• For clarity, the diagonal line from r2c2 to r5c5 is both double arrow and between line.

• Kropki Dots:

  • The white dot separates consecutive digits.
  • The black dot separates digits where one is double the other.

All feedback (positive or critical) appreciated!