Puzzle No. 500: Arrow-Sum Sandwich-Kropki Pairs Sudoku

 

Hi all. It really feels great to reach 500 Sudokus on my blog. When I started the blog, I never imagined I would come this far. To celebrate this milestone, I am offering a discount of 20% on pdf copies of all books available on payhip. Here is the link  https://payhip.com/worldofsudoku 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

There are some arrow shapes in the grid. The sum of the digits along the path of each arrow must equal the digit in the circled cell. Digits may repeat along an arrow. 

Clues outside the grid represent the sums of the digits sandwiched between the 1 and the 9 in that row or column.  

A black dot between two digits means one of them is double the other. Not all possible black dots are necessarily given. 

Online Solving Link to Penpa   

Online solving Link to Sudokupad

Puzzle No. 492: Odd-German Whispers Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

Cells containing green circles contain only odd digits.

Adjacent digits along each green line have a difference of at least 5.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 489: German Whispers - X Sums Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

Adjacent digits along each green line have a difference of at least 5.

The clues outside the grid indicate the sum of the first X digits placed in the corresponding direction, where X is equal to the first digit placed in that direction. 

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 488: Thermo - X Sums Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

There are some thermometer shapes in the grid. The digits are strictly in increasing order from the bulb to the flat end of each thermometer.

The clues outside the grid indicate the sum of the first X digits placed in the corresponding direction, where X is equal to the first digit placed in that direction. 

Online Solving Link to Penpa 

Online Solving Link to Sudokupad

Puzzle No. 478: Quadruple-Quad Sum Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

Digits in circles must appear in the surrounding four cells, in some order.

Also, the white circle implies that one digit is the sum of the remaining three digits at that 2x2 square. Not all circles are given, i.e. there may or may not be additional 2x2 squares where one digit is the sum of the remaining three digits.

Link to Penpa

Link to Sudokupad

Puzzle No. 476: Slow Thermo-Renban-German Whispers-Dutch Whispers Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

There are some thermometer shapes in the grid. Digits along the thermometers never decrease from the bulb to the flat end. 

Each purple line contains consecutive digits, in any order.

Adjacent digits along each green line have a difference of at least 5.

Adjacent digits along each orange line have a difference of at least 4.

Link to Penpa

Link to Sudokupad

Puzzle No. 474: X Sums-Little Killer-Quadruple Hybrid Sudoku

The results for ISC exams are out and my daughter scored 97%. I made this Hybrid Sudoku themed on her score.

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

The clues outside the grid indicate the sum of the first X digits placed in the corresponding direction, where X is equal to the first digit placed in that direction. 

Numbers with arrows outside the grid indicate the sum of the digits appearing in the cells in the corresponding direction. Digits may repeat in the direction of the arrow.

Digits in circles must appear in the surrounding four cells, in some order.

Link to Penpa

Link to Sudokupad

 

Puzzle No. 472: Arrow-Skyscraper Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

There are some arrow shapes in the grid. The sum of the digits along the path of each arrow must equal the digit in the circled cell. Digits may repeat along an arrow. 

Each digit in the grid represents the height of the skyscraper in each cell. The digits outside the grid indicate the number of skyscrapers seen from the corresponding direction.

Link to Penpa

Link to Sudokupad

Puzzle No. 471: Thermo-Region Sum Lines Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

There are some thermometer shapes in the grid. The digits are in increasing order from the bulb to the flat end of each thermometer.

Digits on each blue line add up to the same number in each box it visits.

Link to Penpa

Link to Sudokupad

Puzzle No. 468: Arrow-Little Killer Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

There are some arrow shapes in the grid. The sum of the digits along the path of each arrow must equal the digit in the circled cell. Digits may repeat along an arrow. 

Numbers with arrows outside the grid indicate the sum of the digits appearing in the cells in the corresponding direction. Digits may repeat in the direction of the arrow.

Link to Penpa

Link to Sudokupad

Puzzle No. 460: Dutch Whispers-Quadruple Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.

Adjacent digits along each marked line have a difference of at least 4.

Digits in circles must appear in the surrounding four cells, in some order.

Online Solving Link

Puzzle No. 459: Renban-Quadruple Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.

Each marked line contains consecutive digits, in any order.

Digits in circles must appear in the surrounding four cells, in some order.

Online Solving Link

Puzzle No. 458: Sum Next to 9-Renban Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.

Clues outside the grid are the sum of the numbers in the cell that are orthogonally adjacent to the 9 along the direction.

Each marked line contains consecutive digits, in any order.

Online Solving Link using Penpa

Online Solving Link using Sudokupad

Puzzle No. 452: Fog Of War - German Whispers-Dutch Whispers-Sequence Lines-Kropki Pairs Sudoku from my new book "Fog Of War : Vol # 1"

 

This puzzle is taken from my new book "Fog Of War : Vol # 1". 

This puzzle was also covered by Bremster on his Youtube channel. You can watch the video here .

The book is available in PDF format on Payhip. Here is the link https://payhip.com/b/P2qtO .

Rules: Classic Sudoku rules apply. 

The grid is partially covered in fog. Placing correct digits will clear the fog from the digit's surrounding cells. 

Adjacent digits along each green line have a difference of at least 5. 

Adjacent digits along each orange line have a difference of at least 4. 

Digits along each grey line have to be different and must form an arithmetic sequence in the correct order. 

A black dot between two digits means one of them is double the other. A white dot between two digits means they are consecutive. Not all possible black and white dots are necessarily given.

Online Solving Link using Sudokupad

Puzzle No. 450: Arrow-Pointing Evens Hybrid Sudoku

 

RULES: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.

There are some arrow shapes in the grid. The sum of the digits along the path of each arrow must equal the digit in the circled cell. Digits may repeat along an arrow. 

Digits outside the grid indicate the number of even digits in the direction of the diagonal arrow.

Online Solving Link using Penpa

Online Solving Link using Sudokupad

Puzzle No. 442: German Whispers-XV Pairs Hybrid Sudoku

 

RULES: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.

Adjacent digits along each marked line have a difference of at least 5.

Digits separated by an X sum to 10; digits separated by a V sum to 5. Not all possible Xs and Vs are necessarily given. 

Online Solving Link using Penpa

Online Solving Link using Sudokupad

Puzzle No. 438: German Whispers-Renban-Region Sum Lines Hybrid Sudoku

 

Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.

Adjacent digits along each green line have a difference of at least 5.

Each purple line contains consecutive digits, in any order.

For each blue line, digits on the line have an equal sum N within each box it passes through. If a line passes through the same box more than once, each individual segment of such a line within that box sums to N separately. 

Online Solving Link using Penpa

Online Solving Link using Sudokupad

Puzzle No. 437: Fog Of War - Kropki Pairs-German Whispers Hybrid Sudoku

 

RULES: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

The grid is partially covered in fog. Placing correct digits will clear the fog from the digit's surrounding cells.

A black dot between two digits means one of them is double the other. A white dot between two digits means they are consecutive. Not all possible black and white dots are necessarily given.

Adjacent digits along each green line have a difference of at least 5.

Online Solving Link using Sudokupad

Puzzle No. 436: Fog Of War - Kropki Pairs-German Whispers Hybrid Sudoku

 

RULES: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

The grid is partially covered in fog. Placing correct digits will clear the fog from the digit's surrounding cells.

A black dot between two digits means one of them is double the other. A white dot between two digits means they are consecutive. Not all possible black and white dots are necessarily given.

Adjacent digits along each green line have a difference of at least 5.

Online Solving Link using Sudokupad

Puzzle No. 433: Group Sum-Renban Hybrid Sudoku 08 from the book World Of Sudoku: Vol # 10

 

A Group Sum-Renban Hybrid Sudoku from my new book - World Of Sudoku: Vol # 10. This Sudoku also featured on the YouTube Channel Cracking The Cryptic, covered by Mark. You can watch the video here

Rules: Place a digit from 1 to 9 into each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. 

Numbers inside each circle indicate the sum of the digits in the cells covered by the corresponding circle. Digits may repeat in the cells covered by a circle. 

Each marked line contains consecutive digits, in any order.

Online Solving Link using Penpa

Online Solving Link using Sudokupad