Antiknight Pi Snake
(Published on 8. February 2025, 07:34 by Tulrak)
Rules:
- Pi=3.14159265358979323...
- Place the digits 1-9 once each in every row, column and box.
- Cells separated by a knight's move (in chess) cannot contain the same digit.
- Cells marked with a gray square must contain even digits.
- Cells marked with a gray circle must contain odd digits.
- Color 18 orthogonally connected cells to create a 18 cell long, 1 cell wide snake that doesn't branch or touch itself orthogonally. The snake contains the first 18 digits of pi in the correct order (given above).
- All of the gray squares and none of the gray circles are on the snake.
Solve the sudoku here:
SudokuPad
Solution code: Row 2 with snake cells omitted. (read left-to-right)
For example: If the row 2 digits are 2(1)3(4)5(687)9
with digits in parentheses representing snake cells
then enter 2359 as the solution.
Comments
on 14. February 2025, 04:06 by Chipmunk
I loved the break-in with the snake!
on 8. February 2025, 17:11 by Deklok
Great puzzle! The Snake was'nt that hard but the knight's move after had me struggling. Thank you
--
Tulrak: Thanks, I was trying to balance it, guess I should've thrown in a few more circles ;)
Technically if I had forced the final digit of the snake, then it would've already been a unique puzzle with the snake+anti-knight alone, but I didn't find a logical solve path so my hope for a miracle pi snake sudoku was crushed.
