Standard Sudoku rules apply.
Draw an orthogonally moving snake starting from the green circle that doesn't fork or touch itself, not even diagonally. The snake must visit each box at least once. 1 and 9 are never on the snake.
Clues outside the grid show either the sum of digits not on the snake between the 1 and 9 or the sum of a run of connected digits on the snake in that row/column. (Those runs can lie between the 1 and 9). The order of the clues doesn't necessarily need to match the order that the runs of digits they're referring to appear.
A digit in an arrow shows the distance to the next 1 or 9 in that direction (e.g. a 1 would mean the next digit in that direction is a 1 or 9).
Play on SudokuPad by Sven Neumann
Solution code: Column 8, read from top to bottom
on 1. September 2024, 18:42 by QuiltyAsCharged
Wow, I loved this! It's quite tricky and was difficult to wrap my head around the rules at first. But it was really satisfying to work through it and see how everything falls into place towards the end.
on 10. June 2024, 22:45 by Corvin
Just to clarify, all possible clues for sandwiches and snake runs are given.