Puzzle No. 509: 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. 

Online Solving Link using Penpa

Online Solving Link using Sudokupad

Puzzle No. 508: Parity Frameless 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. 

An Even Clue outside the grid is the sum of Even number of cells seen from the starting cell in that direction.

An Odd Clue outside the grid is the sum of Odd number of cells seen from the starting cell in that direction.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 507: Index to One 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. 

For each outside clue (X), let the X-th cell from that side contain the digit N. Then the N-th cell from the same side must contain the digit 1.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 506: Diagonal Counting 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 number of distinct digits in the direction of the arrow.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 505: 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. 504: Even Sandwich 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 all numbers in that row or column surrounded by even numbers on both sides (”sandwiched”). Clues can be given in any order, and all such numbers are given. If a clue is a ‘–’, then no values in that row or column are sandwiched between two even numbers.

Online Solving Link to Penpa 

Online Solving Link to Sudokupad

Puzzle No. 503: Diagonal Skyscraper 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 skyscraper clues: Each digit in the grid is a "skyscraper" whose height is the digit in that cell. Taller or equally tall skyscrapers obscure the view of smaller or equally small ones. Numbers outside the grid indicate the number of skyscrapers that can be seen (along the indicated diagonal) from that vantage point.

Online Solving Link to Penpa

Online Solving Link to Sudokupad

Puzzle No. 502: Point to Next 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. 

For each number ‘N’ placed in a cell with an arrow, the number ‘N+1’ is pointed at by the arrow.

Online Solving Link to Penpa 

Online Solving Link to Sudokupad

Puzzle No. 501: Numbered Rooms 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 appear in the Xth cell from that clue, where X is the first cell seen by the clue.

Online Solving link to Penpa

Online Solving Link to Sudokupad

CHALLENGING SUDOKU: VOL # 1 - NOW AVAILABLE ON PUZZVERSE APP ON ANDROID

 

Dear Friends. My book Challenging Sudoku: Vol # 1 is now available on Playstore on Puzzverse App.

The book is available to purchase in three parts - each part containing 50 sudokus. You can buy and play directly on the app. 

Here is the link to the app: https://play.google.com/store/apps/details?id=com.puzzverse.com