Every row, column and region contains digits 1-9. Regions are to be determined by the solver. Every region is a snake, a one cell wide path of orthogonally connected cells that does not branch or contain a 2x2 block of cells. One end of each region is marked with a circle. Digits in a cage sum to the total in the top left corner.
Solution code: Column 1
on 1. June 2023, 13:00 by tim kenyon
cool stuff, don't actually need to find all the regions to solve the sudoku but still 5* for me!