Puzzle No. 485: Sum Detector 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 digit in each cell with an arrow must equal the sum of the values in one or more cells along the direction pointed at by the arrow, starting with the cell that the arrow points to directly.

Online Solving Link to Penpa

 Online Solving Link to Sudokupad

Puzzle No. 484: Before 9 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 of a row or column tell you the sum of all of the digits appearing prior to the 9 in that row or column. The sum counts from the side of the grid where the clue appears.

Online Solving Link to Penpa  

Online Solving Link to Sudokupad

Sudoku Exotica: Vol # 2 - Now available on Amazon (in paperback form) and on Payhip (in PDF form)

 

My new book Sudoku Exotica: Vol # 2 has released and is now available on Amazon in paperback format and on Payhip in PDF format. This is the second book in the series Sudoku Exotica. The books in this series contain innovative and uncommon Sudoku Variants. 
The Sudokus are test solved by Édouard Lebeau and his timings for the same are also mentioned. All the Sudokus have Online Solving Links to Penpa as well as Sudokupad.

The book features the following Sudoku Variants:

• Slow Thermo Sudoku;
• Group Sum Sudoku;
• Odd Even Rossini Sudoku;
• Full or Half Sudoku;
• Faded Kropki Pairs Sudoku;
• Bouncing X Sums Sudoku;
• Ascending Starters Sudoku;
• Before 9 Sudoku;
• Pointing Digits Sudoku;
• Double Arrow Sudoku..

Link to Amazon for paperback   https://tinyurl.com/6cezr2rk

Link to Payhip for PDF     https://payhip.com/worldofsudoku   

 

Puzzle No. 483: Ascending Starters 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 indicate the sum of the first set of all ascending digits starting from the first cell from the corresponding side. Sets may consist of only one digit.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 482: Pointing Digits 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. 

A digit N in a cell with an arrow indicates that the digit N is also in a cell N steps in the direction of an arrow. There may be other repeated digits in the direction of the arrow. Not all arrows are given. (For example, A 4 in a cell with an arrow means that there is a 4, 4 cells away in the direction of the arrow and there may be additional 4s in that direction.) 

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 481: Faded Kropki Pairs 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 separated by a white dot must either be consecutive or be in a 1:2 ratio. Not all dots are given.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 480: Double Arrow 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 along a grey line must have the same sum as the digits in the circles connecting the line.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

SUDOKU EXOTICA : VOL # 2 - COMING SOON

 

Puzzle No. 479: Bouncing X Sums 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 indicate the sum of the first X digits along the indicated diagonal, where X is equal to the first digit placed in that direction. If X exceeds the number of cells in the direction, the sum bounces off the edge at a 90-degree angle and continues. Digits may repeat in sums.

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. 477: Weighted Little Killer 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 along indicated diagonals must sum to the given total outside the grid, and must also increase as they move down along the path of the arrow.

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. 475: Classic 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. 

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. 473: Mean Mini - Killer Sudoku

 

Rules: Place a set of six digits from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 2x3 outlined box.

There are some cages in the grid. The number on the top left corner of each cage is equal to the sum of the digits in that cage. Digits do not repeat in a cage.

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. 470: Mean Mini - Kropki Pairs Sudoku

 

Rules: Place a set of six digits from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 2x3 outlined box.

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. 

Link to Penpa

Link to Sudokupad

Puzzle No. 469: Mean Mini - Arrow Sudoku

 

Rules: Place a set of six digits from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 2x3 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. 

Link to Penpa

Link to Sudokupad

SUDOKU EXOTICA: VOL # 1

 

My new book Sudoku Exotica: Vol # 1 has released and is now available on Amazon in paperback format and on Payhip in PDF format. This is the first book in the new series Sudoku Exotica. The books in this series will contain innovative and uncommon Sudoku Variants. 

The book features the following Sudoku Variants:

• Battenburg Sudoku;
• 234 Outside Sudoku;
• Positional X Sums Sudoku;
• Mathdoku;
• XY Differences Sudoku;
• Serbian Frame Sudoku;
• Rossini Sudoku;
• First Seen Odd Even Sudoku;
• Odd Even Count Sudoku;
• Incomplete Arrow Sudoku;

All Sudokus in the book are test solved by Edouard Lebeau and his timings are mentioned with each Sudoku. Online Solving Links are also provided with each Sudoku for solvers who like to solve online.

Link to Paperback from Amazon  https://rb.gy/7dbv1l

Link to PDF from Payhip               https://payhip.com/b/TZPwV 

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. 467: Thermo 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.

Link to Penpa

link to sudokupad

Puzzle No. 466: German Whispers 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.

Link to Penpa

Link to Sudokupad

Puzzle No. 465: Arrow 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. 

Online Solving Link using Penpa

Online Solving Link using Sudokupad

Puzzle No. 464: Thermo 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.

Online Solving Link using Penpa

Online Solving Link using Sudokupad