Logic Masters Deutschland e.V.

Happy birthday, zetamath!

• Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
• No-touch (anti-king): Equal digits cannot touch each other diagonally.
• Killer cages: An area surrounded by a dashed line is a 'killer cage'. Digits in a cage sum to the number in the upper left corner.
• 38 Indexing:
  1. Digits in column 3 indicate the column in which the digit 3 appears in that row. (e.g. if r4c3 is a 7, r4c7 is a 3)
  2. Digits in row 3 indicate the row in which the digit 3 appears in that column. (e.g. if r3c4 is a 7, r7c4 is a 3)
  3. Digits in column 8 indicate the column in which the digit 8 appears in that row. (e.g. if r4c8 is a 7, r4c7 is an 8)
  4. Digits in row 8 indicate the row in which the digit 8 appears in that column. (e.g. if r8c4 is a 7, r7c4 is a 8)

You can play this puzzle online using:

• CTC app: https://tinyurl.com/9xb2v8p3
• f-puzzles: https://f-puzzles.com/?id=y467s83e

Hope you'll enjoy!