Liar Extra Region Sudoku Puzzle (Daily Sudoku League #189)

Liar Extra Region Sudoku Puzzle type is appearing in forthcoming World Sudoku Championship 2016. I have prepared these Sudoku puzzles for the practice of this championship and posting them so that others who are participating in this championship can also use them for their practice. This is a tough puzzle and will give good practice for the forthcoming World Sudoku Championship. All the best to the readers of this blog who are participating in this championship. See you all in Slovakia.

This Extra Region Sudoku Puzzle, I am posting as 189th Sudoku in The League of Extraordinary Ladies & Gentlemen.

Rules of Liar Extra Region Sudoku Puzzle

Fill in the whole grid with numbers from 1 to 9 so that no digit is repeated within a row, a column or an outlined 3x3 square. There are some shaded regions in the grid. All of them but one are extra regions, i.e. all numbers 1-9 must be placed exactly once in the cells of this region. The remaining shaded region must not be an extra region. It is a part of the solution to discover which region is not an extra region.