Congrats to top 3 overall as well as Indians. It was great experience supporting Hemant. Its so good to see youngsters rising in solving and creating.
Sorry to Hemant if I was too strict mentoring(rejected lots of his creations) just wanted him to learn as much possible and create a good round.
I was very much aware of the half solve of Untouch 9x9 due to symmetry, but I let it through because I like his design and idea. Thanks to LMI for the opportunity and all testers.
Thanks to all participants and their feedback, will surely keep that in mind during next contest. I hope you all enjoyed.
Any participant if they feel they could not solve any particular sudoku, please feel free to post here we will be happy to help you.
Good luck with upcoming contests. :)

Generally, the 9*9 version carries more points than the 6*6 version of each variant. Is it because of the difficulty level of 6*6 is greater than 9*9?

The points are an indicator of the level of difficulty of the sudoku. So, yes; the 6×6 carries more points because of difficulty.