Indian Sudoku League

Discussion Thread

Indian Sudoku League 2019

About ISKL

Indian Sudoku League (ISKL) is a concept of Nation-wide Developmental Ranking System for Sudoku. The Indian Sudoku League has the creative assistance of Logic Masters India (LMI). LMI will be hosting the online rounds and providing content for the event.

Mission of ISKL

  • To provide a competing platform: It has always been a challenge to select talents for the World Sudoku Championship. Easier competitions encourage newcomers while challenging competitions help us to select a worthy National team for the Annual World Championships. It was to this end that LMI began and continues Sudoku Mahabharat, but when ISKL approached us with their own goal to have a nationwide tournament, we thought we could use this concept to go one step further in talent development, and make a system which casts a wider net on upcoming Sudoku talent in India. The 2016 and 2017 editions of ISKL led to many new participants eventually doing well in Sudoku Mahabharat and qualifying to the Indian Sudoku Championship. We want to keep this structure going strong this year too.
  • To provide a relative National Ranking system: This system will go a long way in nurturing national talent for the higher competition levels.


View ISKL as a standalone league whose goal is to develop and build new talent by providing a training element to it. Over the years, the Sudoku community has a few regular members competing throughout the year, learning and exploring all the aspects of the competition. This has led to those few individuals becoming heavily experienced and developed and has caused a gap between them and newcomers who find it difficult to get motivated because of this gap. While ISKL will be conducting a Nation wide Sudoku league, LMI offers an opportunity for top 10 selected solvers to learn from the core team/experts. The top 5 Inexperienced* Above-18 participants and the top 5 Inexperienced Under-18 participants will be added to a private group where they will get training, insight and tips from India's top talents, who have been to the World Sudoku Championships. Using this learning experience, we hope to bridge the gap for some newcomers to make it to the next level.

*The criteria here for inexperienced is as follows:
- The participant has not participated in a World Sudoku Championship.
- The participant has not achieved a top-20 position in an Indian Sudoku Championship.


  • A Sample Booklet used in 2016 is still available which has more details and practice material for the 3 online rounds which will largely follow the same structure. In case of variant differences (we expect at most 2-3 variant slots to be different in the first 3 rounds), updates will be made by the end of September.. You can download it by clicking here.
  • There will be 4 online rounds, out of which Round 4 will have 2 parts.
  • The tournament will be held in November, 2019.
  • There will be 4 rounds, on 4 consecutive weekends in November. By 'weekends', it is meant that the contest will be open for registered participants from Friday morning ~9 AM to Monday night ~ 9 PM. Round 1 happens on 1st-4th November and later rounds will take place on subsequent weekends.
  • Round 1 will have easy Classics, Round 2 will have medium Classics and a few introductory 6x6 variants, and Round 3 will have easy-medium Variants.
  • Round 4 will be a combination of the types from the first 3 rounds.
  • Applicants who are new to online competitions MUST read the F.A.Q. of the site here and attempt a demo contest here
  • Applicants MUST make sure they have an LMI ID which is free and can be procured via this link - If you already have one in our records, that is enough. If not, please mail us with your ID so we can properly enable all paying participants to participate in the league.

ISKL Organizers

Jai Prakash Mishra, founder of ISKL
email id:

Prasanna Seshadri, LMI Content Contributor
email id:
Contact number: 7019678898


The registration process has two steps:

Participation Fee

Currently the participation fee is Rs. 600.
For an additional Rs. 150, ISKL applicants will receive content of a previous year's ISKL rounds which will all be great practice for ISKL 19. Existing ISKL participants can also avail of this offer. Please send an email to if there are any queries regarding the fee structure.
The applicant must make a payment of the participation fee via any one of two payment options.
a) Pay Via Paytm using b) Transfer to a specified bank account as below.
Current Account
Syndicate Bank
IFSC: SYNB0000493

Participant Details

The applicant must send the following details either to or to 9445-947-365:
- Name
- Age
- Sex
- Place
- Mobile no.
- Payment reference
- Existing LMI ID (must)
- Whats app no. If any
- Time preference to receive calls


- There will be cash prizes on offer. These will be specified after the first round, but will be similar to last year where the winner got Rs. 20000 and 4 others (2nd, 3rd, best newcomer, best U-18) got subsets of that amount
- As mentioned above, LMI will be offering training to Inexperienced solvers. The number set above is 5 from each age category but LMI reserves the right to select a few more promising talents if there are any. - Participation medals and certificates are available at the end for everyone who either mails or messages their address (Even if you have given your address last year, please confirm it so we know it is the same one).

International Participation

As of now ISKL is planned solely with Indians in mind, but if there is substantial interest from International participants we will think of procedures to allow for International participation.

Last edited by Administrator @ 10/16/2019 2:18:08 PM.