Slay the Hydra!
(Published on 5. January 2026, 04:32 by Phase Queen Rachel)
-Normal sudoku rules apply.
-Somewhere in the grid there is a hydra.
-The hydra moves orthogonally and does not touch itself (not even diagonally).
-The digits along the hydra follow the pattern 123456789123...9 with a 1 at its tail and a 9 at all four of its heads.
-The hydra's path splits every time it crosses a cell with a red 'slash' line and only at these points. (When a hydra splits both new heads will always be on the same end of the red 'slash' line, opposite the direction it came from.)
-All end points of the hydra are given in green.
-And digits cannot repeat on any of the red 'slash' lines.
Here's an example of how the hydra moves and splits:
Solution code: The digits of Column 7, followed by the digits on the hydra in Row 2.
Solved by mnhuik, efnenu, SirThomas, ymhsbmbesitwf, xiaozhu, SKORP17, sehringdipity, flutchman, 72kchunshuai, gdc
Comments
on 6. January 2026, 10:01 by flutchman
Very nice. Had a sticking point about 1/3 into the puzzle and everything broke open after that.
Neat idea.
on 5. January 2026, 06:45 by mnhuik
Enjoyed.More hydra puzzles please.
