Sudoku 24: Odd Sudoku

Rules: Classic sudoku rules apply. Additionally, cells with circles must have odd numbers.

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Easier Version

Sudoku 23: Multi Diagonal Sudoku

Rules: Classic sudoku rules apply. Additionally, every marked diagonal contains each number not more than once.

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Easier Version

Sudoku 22: Arrow Sudoku

Today's sudoku is dedicated to my favourite Indian sudoku author. Yeah, to Ashish Kumar. Known for creating best themed sudokus, Ashish is one of the most modest persons in LMI. Here is a sudoku with his initials as the theme.

Rules: Classic Sudoku rules apply. Additionally, the number in a circle is the sum of the digits which are marked by its arrow.

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Sudoku 21: Thermo Sudoku

I wish a very happy birthday to Pranav Kamesh. In the Indian sudoku & puzzling community, this name needs no introduction. At such a young age Pranav has attained so many feats. On a personal level, Pranav is the closest to me among the 5 champs who had started sudokuing with me. If you like a sudoku on this blog, you should thank Pranav as well. More than 60% of the sudokus till date have been tested by Pranav.

Here is a Thermo Sudoku with Pranav's initials as a theme.

Rules: Classic Sudoku rules apply. Additionally the digits in the thermometer shapes must be strictly increasing in each cell from the round bulb to the flat end.

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Easier Version

Sudoku 20: Fortress Sudoku

Today I'm posting a Fortress Sudoku with the compulsory theme of the month. Hope you all like it.

Rules: Classic Sudoku rules apply. Additionally, a digit in a shaded cell must be greater than digits in all orthogonally adjacent white cells. 

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Easier Version

Sudoku 19: Odd Sum Pair Sudoku

Rules: Classic Sudoku rules apply. Additionally, a dot between two cells implies that the sum of digits in those two cells is odd. Not all dots are given.
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Sudoku 18: All Odd or Even Sudoku

The last fortnight has been quite packed for me. I couldn't create any sudoku for today beforehand. So got late in posting today :(

Rules: Classic Sudoku rules apply. Additionally, the shaded cells in each 3x3 box will be either all odd or all even.
Theme: S
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