The Indian Sudoku Championship (commonly abbreviated as 'ISC') is an annual national contest held in India to crown the Indian Sudoku Champion and to select the national team for the World Sudoku Championship. It usually consists of multiple rounds of solving various sudoku variants and the scores of players are aggregated for the final rankings. It is conducted by Logic Masters India (commonly abbreviated as 'LMI'), which is the Indian affiliate of the World Puzzle Federation.
The first ISC was held in 2007 which was won by Ritesh Gupta. The latest ISC was held on 16th July, 2016 and was won by veteran solver Rohan Rao. Of the 10 national championships held so far, 4 have been won by Rohan Rao, 3 by Ritesh Gupta, 2 by Rishi Puri and 1 by Prasanna Seshadri.
The national teams have been representing India at the World Sudoku Championship since 2007.
The qualifications for ISC 2017 will be held as a series of 4 online rounds in collaboration with Sudoku Mahabharat on LMI, followed by an offline finals.
History
The Indian Sudoku Championship has been held online and offline across the years and attracts the top solvers of India. It is a platform for sudoku authors to create their own sudokus for the event, as well as for sudoku enthusiasts to participate and solve them in a national championship involving various sudoku variants.
In 2016, several online rounds were held across the year followed by an offline finals.
In 2007, 2008 and 2011, regional rounds were held across the major Indian cities followed by an offline finals.
In 2009, 2013, 2014 and 2015 the championship was held as online contests.
In 2010, the championship was held as part of Techfest, IIT-Bombay.
In 2012, the championship was held in collaboration with Times Sudoku Championship (TSC), sponsored by Times of India.