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 ..read more

  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 ..read more

  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 ..read more

  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.  Online Solving Link using Penpa Online Solving Link using Sudokupad ..read more

  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.  Horizontally adjacent cells marked by a diamond contain digits whose difference is equal to the first (leftmost) digit of the corresponding row. Vertically adjacent cells marked by a diamond contain digits whose difference is equal to the first (topmost) digit of the corresponding column. All such diamonds are marked. Online Solving Link using Penpa Online Solving Link using Sudokupad ..read more

  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 ..read more

It gives me great joy to tell you all that my new book World Of Sudoku: Vol # 10 has been released and is available on Amazon in Paperback format and on Payhip in PDF format. The book contains 120 Handcrafted Sudokus covering 10 Hybrid Sudoku Variants. All the puzzles in the book are test solved by Édouard Lebeau and his test solve timings are mentioned with each each puzzle. Online Solving Links of Penpa as well as Sudokupad are also provided with each sudoku. The Variants covered in the book are: X Sums-Consecutive Pairs Hybrid Sudoku; Clone-Sum Frame Hybrid Sudoku; Outside Palindro ..read more

  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.  Every digit on a grey line must have a value which lies between the values of the two digits in the circles at the ends of the line. Digits may repeat along a line. Online Solving Link using Penpa Online Solving Link using Sudokupad ..read more

  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 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. Adjacent digits along each green line have a difference of at least 5. Online Solving Link using Penpa Online Solving Link using Sudokupad ..read more

  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.  If a grey circle is given between two adjacent cells, then the digits in those cells will be consecutive. Not all grey circles are given, which means adjacent cells without a grey circle may or may not contain consecutive digits. Online Solving Link using Penpa Online Solving Link using Sudokupad ..read more