Sudoku 4: Spiral Sudoku

India is hosting the ongoing 7th round of World Sudoku GP 2018 and Spiral Sudoku is a part of this round. So, I thought to create a Spiral Sudoku. Practise this and then do participate in the GP too.

Rules: Place a digit from 1-9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. Additionally, exactly 3 of the 3x3 boxes have the property that their eight perimeter cells are in strictly increasing order with starting cell and direction unspecified. The 3 spiral boxes, and the starting cell and direction in these boxes need to be identified as a part of solving. 

Sudoku 3: Disjoint Groups Sudoku

Rules: Place a digit from 1-9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. Additionally, no digit can appear in the same position in different 3x3 boxes.

Sudoku 2: Next To Nine Sudoku

Theme: 45

Rules: Place a digit from 1-9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. Additionally, the digits outside the sudoku must in adjacent to 9 in the corresponding row/column(not necessarily in the same order).

Sudoku 1: Irregular Sudoku

Hey, people! Welcome to my blog. After planning for a long time I'm finally starting my blog. I plan to post a sudoku on the 1st and 15th of every month(Yeah, the first one is coming two days in advance. I couldn't wait for 2 more days :p)

Here you go with the 1st one. 

Theme: '1'

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and outlined region.

Links:

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