Sudoku 16: Arrow-Thermo Linked Sudoku

Rules: Classic Sudoku rules apply. Additionally,

For Arrow Sudoku(left one), the number in a circle is the sum of the digits which are marked by its arrow.

For Thermo Sudoku(right one), the digits in the thermometer shapes must be strictly increasing in each cell from the round bulb to the flat end.

And the gray shaded cells must have same digits in both the sudokus.

Links:
Easier Version
Solution

Sudoku Mahabharat 2019

Sudoku Mahabharat--the online selections for Indian Sudoku Championship organised by Logic Masters India--is back.

That's not it! This time you won't have to wait for January. The first round(Standards round) authored by Kumaresan sir begins on 14th December, 2018.

I'm authoring the second round(Outside & Neighbours) with Amit Sowani. It will be held from 11th to 14th January, 2019.

For more details about Sudoku Mahabharat, click here. 

For Instruction Booklets and other updates, keep checking the forum. 

Sudoku 15: Thermo Sudoku

Rules: Classic Sudoku rules apply. Additionally the digits in the thermometer shapes must be strictly increasing in each cell from the round bulb to the flat end.

Links:

Easier Version

Solution

Sudoku 14: Product Frame Sudoku

Rules: Classic Sudoku rules apply. Additionally the numbers outside represent the product of first three numbers in corresponding direction.

Thanks to Gaurav Kr. Jain for suggesting good changes to the sudoku.

Links:

Easier Version

Solution

Sudoku 13: Extra Region Sudoku

Many beginners told me that the Sudokus uploaded on the blog are quite difficult for them to solve. So, I decided that from now on wards I'll also post a link of the easier version of the same Sudoku which I post on the blog. Additionally, from now on wards I'll also post the link of  the solution of the Sudoku.(I'll also add the solution link to the previous Sudokus in some days)

Today I'm posting an Extra Region Sudoku. Hope you all enjoy it.

Rules: Classic Sudoku rules apply. Additionally, each group of 9 shaded cells will also have digits from 1 to 9. 

Links:

Easier Version

Solution

Sudoku 12:Morse Numbers Sudoku

Rules: Classic Sudoku rules apply. Additionally, an actual combination of odd and even digits along an arrow implies which number should be placed in

the corresponding circle following the Morse coding of numbers. 'O' stands for Odd digits and 'E' for Even digits.

Sudoku 11: One Bug Per Line Sudoku

WSC is around the corner. So, today I'm posting a sudoku for WSC practice. I hope to post some more before WSC. 

Rules: Classic Sudoku rules apply. Additionally, exactly one given (small) digit in every row, column and every box should be wrong and should be replaced by other digit in the correct solution. 

Sudoku 10: Missile Sudoku

Today I've created a new variant---Missile Sudoku as a tribute to Dr. A. P. J. Abdul Kalam, the Missile Man of India, on the occasion of his 87th birth anniversary.

Rules: Classic Sudoku rules apply. Additionally the cells with circles are missile cells. The number in the missile cell must be greater than the numbers in the adjacent(both orthogonally and diagonally) cells.

I hope many variations of this variant will appear in future😉

Sudoku 9: Classic Sudoku

Today I'm posting the first Classic Sudoku on my blog. As it is the first one I've kept it easy.

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.

Sudoku 8: Sum Frame Sudoku

Rules: Place a digit from 1-9 in each empty cell so that each digit appears exactly one in every row, column and 3x3 outlined box. Additionally the numbers outside represent the sum of first three numbers in corresponding direction.

Sudoku 7: Little Killer 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 numbers with arrows indicate the sum of the numbers in that direction. 

Sudoku 6: Trampoline Sudoku

With just 3 days left for Indian Sudoku Championship, preparations must already be in full swing. This time ISC features a new variant called Trampoline Sudoku.

There aren't any Trampoline Sudoku for practice. So, I've created one for ISC practice.

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, numbers on a trampoline (all the cells the shape is part of - light shaded colored cells) will jump vertically to

the height of the corresponding number and then at this new height, each number must reach (be orthogonally or diagonally adjacent to) two copies

of itself, one to the left and one to the right.

Sudoku 5: Odd-Even 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 cells shaded with circles will have odd numbers and those with squares will have even numbers.

Theme: O-E

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:

Solve Online