Chroma:
I coded the sudoku algorithm. Unless he modified it it doesn't support symmetrical sudokus. It just makes a valid grid and then removes squares at random which still leave you with a puzzle that has a single solution.
Symmetrical sudokus would take quite a bit more time to generate. At least with the algorithm I used. You'd have to keep generating puzzles until one allowed you to remove all the squares in the pattern you wanted while still being left with a single solution.
I coded the sudoku algorithm. Unless he modified it it doesn't support symmetrical sudokus. It just makes a valid grid and then removes squares at random which still leave you with a puzzle that has a single solution.
Symmetrical sudokus would take quite a bit more time to generate. At least with the algorithm I used. You'd have to keep generating puzzles until one allowed you to remove all the squares in the pattern you wanted while still being left with a single solution.