Rules: Place digits 1-9 in the diagram and divide the grid into some regions, where the given circles represent the point of symmetry. No digit is repeated within any row/column/region. Symmetrical pairs of cells in one region should always contain consecutive digits. All regions should contain a circle and all circles are given. No cell may remain empty.
Background: This type is one of my inventions. Actually this is a combination of Spiral Galaxies and Latin Squares. I made it first time in OAPC 4. Same as Snail and Tripod Sudoku, I designed this type for 4th WSC too.
* I think some rules can be changed. Now I’m thinking, it’s not necessary to divide the whole grid. It can be designed with giving some circles for some symmetrical regions in a 9×9 regular sudoku. I think this one will be better.