Texas Jigsaw Windoku: 200 Medium 9x9 Irregular Killer Extra Region Sudoku

The objective is to fill the grid with numbers from 1 to 9 in a way that the following conditions are met:Each row, column, and 9 Irregular regions contains each number exactly once.The sum of all numbers in a cage must match the small number printed in its corner.No number appears more than once in a cage. (This is the standard rule for killer sudokus, and implies that no cage can include more than 9 cells.) Sudoku may contain additional four regions 3 x 3.