Puzzle#83: Odd Fortress Hybrid sudoku by Guest Author Kumaresan

This sudoku is hybrid sudoku with odd and fortress constraints. It was prepared by Kumaresan and is medium to hard difficulty. 



If you want harder version treat R6C1 cell as odd rather than Fortress cell.

RULES: Place the digits 1-9 into each row, column and boldly marked area so that they all contain each digit once. 
Odd Rules:If a cell has shaded circle, it must contain an odd digit.
Fortress Rules: if a cell is shaded with rectangular shape then the digit in the cell must be greater than all its orthogonal neighbors . if any orthogonal neighbor of rectangular shaded cell  is rectangular shaded then this rule doesnt apply and any thing is possible

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