Some say a rolling stone gathers no moss, but a rolling snowball just gathers more snow.
Rules:
Normal Sudoku Rules apply: The digits 1 to 9 must appear in every row, column, and 3x3 box.
Snowballs: There are eight snowballs in the grid marked by light blue circles. Each snowball rolls in a straight line through a set of orthogonally connected cells. The total length (in cells) of a snowball’s path is given by the number in the top left corner. The digits along a snowball’s path behave as follows: after the first two digits, each digit is the sum of the two preceding digits (just like the Fibonacci Sequence). Snowballs may cross paths, and therefore may share one or more cells with other snowballs.
Below is an example of a length 5 snowball that starts at 2 and ends at 7. The digits 3, 4, and 7 are each the sum of the two preceding digits: 3=1+2, 4=3+1, and 7=4+3.
And here is the puzzle. You can solve online at:
Solution code: Row 4 then Row 6
on 30. June 2022, 18:34 by filuta
cool idea and a very nice puzzle!
on 8. December 2021, 17:49 by henrypijames
Break-in logic is nice and not too hard; second half is more challenging than expected. 3⅓ stars difficulty.
on 8. December 2021, 05:54 by TheCaretaker
Loved this ruleset and the interaction between the anowball tracks.