Striped snake (halvers and doublers)
(Published on 23. May 2025, 14:06 by Lizzy01)
Rules:
Normal sudoku rules apply.
Shade some cells to form a snake, i.e. a one cell wide path of cells that does not branch, cross or touch itself orthogonally (but may touch diagonally).
Along the snake digits alternate odd and even parity, the odd digits of which have a doubled and the even digits a halved value. (Digits not on the snake are unaffected)
Values along arrows add up to the value in the circle.
If you like puzzles with slightly strange rules like this one, you may also like to check out this puzzle by starwarigami. There were a few oversights in it at first which I helped fix. The puzzle is completely playable now (and with some very nice logic), but nobody has solved it since it got fixed! I'm sure starwarigami would love it if you have a go at it.
Here are some of my own other puzzles with slightly strange rules you might also like:
Decorate the Christmas tree
(Could use some more solves!)
Richard's Bouncy Castle Birthday Party
Solution code: row 3
Comments
on 27. May 2025, 15:53 by henrypijames
Though puzzle, but I also did a really poor job solving it.
on 25. May 2025, 04:42 by skuntsel
Amazing puzzle with a very smooth and natural flow to it. Liked it quite a lot! The logic is superb, the options are not superfluous, snake behaviour is very nice. Thank you for sharing it!
--Thanks!
on 24. May 2025, 10:37 by Yawnus
Awesome puzzle!
--Thanks!
on 24. May 2025, 00:05 by cyddrdrd
I didn’t see the alternating parity and got stuck for an hour! How blind I am!!! :(
on 23. May 2025, 17:11 by vitaminz
The opening to this was quite tough for me to see but beautiful once found. Rest of the puzzle flowed very smoothly after that. I love how a single arrow serves multiple purposes at different steps of the solve. Very well constructed.
--Thank you!
on 23. May 2025, 16:45 by Snookerfan
Brilliant puzzle with a very naughty snake! Thank you
--Thanks!
