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Monthly Sudoku Challenge Rules
📝How contest will be conducted📝
- ● Empty format of the Problem will be shared on the Contest page, 30 minutes prior to the contest.
● You can either draw/print in advance. (Ignore if you are attempting the problem by online platform)
● Login 5 mins before the contest on the contest home page.
● Access the contest problem by clicking on the respective tab on the contest home pages, at the time of the contest as per the agenda.
● The problem can be attempted by either Drawing on paper/ Take printout/ Attempt online
● Solve the problem as quickly as possible and Submit the ‘Answer Key’ in left to right order, in the form is provided on the Challenge page itself.
● Ranking: The participants submitting the correct answer within the time limit will be considered qualified. Participants who will answer correctly in the shortest time will be ranked higher.
⏳ Different type of Sudoku for Monthly Sudoku challenge ⏳
- For the challenge, various types of Sudoku problems can be used to challenge contestants' skills. Rules will be applicable on the basis of the problem provided. Rules for Different Types of Sudoku are as follows:
●In Anti Diagonal Sudoku each diagonal has at most three different digits. Rest Classic Sudoku apply
● Base rule/Classic Sudoku: In a Sudoku Grid (9x9), each of the 9 blocks must contain all the numbers 1-9 within its squares. Each number can only appear once in a row, column, or box.
● 4X4 / 6X6 / 8X8 / 12x12 / 15x15 / 16x16 Sudoku: These sudoku follow the same rules as classic sudoku but the grid size will be 4X4 / 6X6 / 8X8 / 12x12 / 15x15 / 16x16 respectively.
● Multi Grid Sudoku: Each puzzle consists of two or more sudoku 9x9 grid overlapping each other in various configurations. The objective is to solve all grids according to the rules. Note that each overlapping area must comply with the rules of the two overlapping grids.
● Irregular Sudoku: The objective is to fill each empty place so that the numbers 1 to 9 appear exactly once in each Row, Column and irregular-shaped box.
● Sum Sudoku: Each puzzle consists of a 9x9 Sudoku grid containing sum-areas surrounded by a Bold line. The object is to fill all empty squares so that the numbers 1 to 9 appear exactly once in each row, column, and 3x3 box, and the sum of the numbers in each sum-area is equal to the clue in the area's top-left corner. In addition, no number may be used in the same area more than once.
● Diagonal Sudoku: The objective is to fill each empty place so that the numbers 1 to 9 appear exactly once in each Row, Column, box and the main diagonal Box.
● Chain Sudoku: Consists of a group of circles arranged in a square grid and containing given clues in various places. The object is to fill all empty circles so that the digits appear exactly once in each row, column and chain.
● Alphabet Sudoku: Fill the grid with the given letters such that no letter is repeated in any row, column, or 3x3 region, just like in classic sudoku.
● Even- Odd: Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Cells with grey circles must contain odd digits, and cells with grey squares must contain even digits.
● Greater Than Sudoku: It is the variation of the original sudoku. In addition, greater than or less than signs (“>” or “<“) in the walls indicate that one cell's number is greater than or less than an adjacent cell's number. Also called "Compdoku"
● Outside Sudoku: It is a variation of the standard sudoku. Some digits are given outside the grid. These digits must appear in the first three cells in the corresponding direction.
● Non-Consecutive Sudoku: In Non-Consecutive Sudoku no two adjacent cells have consecutive values. For example, if a cell contains 3, then any neighbouring square cannot contain either 2 or 4.
● Rossini Sudoku is a variation of the classic sudoku. The arrows outside the grid indicate that the nearest three digits in the corresponding direction are in ascending or descending order (the highest number is always in the direction of the arrow). All possible arrows are given, so if there is no arrow, the first three digits do not form an increasing sequence in either direction.
● Skyscraper Sudoku contains clues around the edge. The task is to place digits in the grid. Each digit represents the height of the skyscraper in each cell. The numbers outside the grid represent the number of skyscrapers seen from the corresponding direction.
● In Anti-Knight Sudoku all cells at a chess knight move (at a distance of 2 by 1) must hold different numbers.
● Girandola is an ordinary sudoku with one extra group of cells. This group must also contain digits 1 through 9. (Girandola is a kind of revolving firework.)
● Argyle Sudoku contains additional diagonals; every marked diagonal line contains each digit not more than once. The argyle pattern is derived from the tartan of Clan Campbell, in eastern Scotland.
● Little Killer Sudoku contains numbers and arrows around the edge. The numbered arrows outside the grid indicate the sum of the digits in the corresponding direction. Digits can repeat in the direction of the arrow.
● Kazaguruma ("Windmill Sudoku") consists of five grids, one in the center and the other 4 overlapping the central one. This means that the numbers must be placed correctly for all the five puzzle squares.
● Hoshi consists of six large triangles; the numbers 1 through 9 must be placed into the triangular cells of each large triangle. Every line (of any length, even uncontinous) contains every digit not more than once.
● In Anti Diagonal Sudoku each diagonal has at most three different digits.
● Little Unique Killer Sudoku is a variation of Little Killer Sudoku. Clues outside the grid indicate the sums of digits in the direction of the corresponding arrow. Digits may not repeat within a sum.
● Vudoku is a variation of the classic sudoku. The digit at the vertex of each marked "V" must either be sum or difference of other two digits on the "V".
● Sujiken (from Japanese "sujikai", literally "diagonal") is a variation of Sudoku, invented by George Heineman (USA). The puzzle consists of a triangular grid of cells containing digits from 1 to 9. The objective is to fill a grid with digits so that each cell contains a digit and no digit is repeated in any column, row and diagonal in any direction. Also, no digit occurs twice in any of the three larger 3 x 3 square regions and any of the three larger triangular regions enclosed by thick borders.
🚫Disqualifications🚫
- For following activities, the candidate will be disqualified, and no refund will be provided:
● Incorrect Email id/mobile number/Incorrect Solution/Entry after end time/Candidates unavailability to attend the event/Sending solution to any admin by personal chat/Creating disturbance to other participants/Fight with the organiser
● In case of any dispute, the organisers decision will be considered as final.
🏆Rewards🏆
1. Winner badge for the Top 3 participants.
2. E-certificate to all participants
3. Social Media Coverage of the winners
For winners outside India, courier charges need to be borne by the participants. Team Malsar will only send bear charges for courier in India
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