### Tripod Sudoku

**Tripod Sudoku** is a variation of sudoku, where the borders of regions are not defined. The goal is to fill the grid with digits and divide the grid into regions. Each digit appears exactly once in every row, column and region. All points where three lines meet are given. There are no points where four lines meet.

The program can solve and create puzzles from **4 x 4** to **9 x 9**.

Task files have the extension *.**TRPD**.