Classic Sudoku rules applies.
- Additionally, even/odd Sudoku rules applies: cells with a circle contains an odd number and cells with a square contains an even number.
- Arrow Sudoku rules also applies: the sum of the numbers along the path of each arrow equal the number in the beginning cell of the arrow (in this case the circle or square cell)
- Consecutive Sudoku rules applies: any two adjacent cells separated by a bar contains consecutive numbers. If there is no bar between two cells the two numbers cannot be consecutive. (The fact that there is black and white bars is purely for decorative purposes and don’t have any differences)