An Indexing Miracle
(Published on 16. June 2024, 22:18 by yanggang)
Normal sudoku rules apply.
Disjoint Groups: Cells with the same position within the boxes contain all the numbers 1 to 9.
Anti-knight 5's: Cells separated by a knight's move cannot both contain 5.
Marked Cells: Mark 1 cell in each box. The digit in a marked cell is it's position in the box (read like a book: left to right, top to bottom).
Indexing: Row 1 and column 1 index these marked cells as follows: if rXcY is a marked cell, then r1cY contains the digit X and rXc1 contains the digit Y. See the example image below for reference.
Sample of indexing and marked cells:
Solution code: Row 5
Comments
on 17. June 2024, 14:50 by lwhjp
Superb! And quite a lot more approachable than it looks.
on 17. June 2024, 12:52 by Prince Myshkin
Amazing puzzle! 49:47 for me. Very hard and very beautiful!
on 17. June 2024, 03:58 by Fisherman
A very creative work of art. In the author's example the blue 5, the red 6 and the green 9 are the marks. Channel your inner Phistomefel, persevere, and break in for the prize.
on 17. June 2024, 01:48 by SudokuHero
A puzzle in two parts. Very enjoyable solve.
