Puzzle No. 462: XV 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.

If the sum of digits in orthogonally adjacent cells is 10, then they are separated by an X. If the sum of digits in orthogonally adjacent cells is 5, then they are separated by a V. All possible Xs & Vs are marked.

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Puzzle No. 461: Consecutive 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 in cells separated by a white circle must be consecutive (have a difference of 1). Not all circles are given.

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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.

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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.

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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.

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Puzzle No. 457: Rectangular Multiplication 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 cells inside each rectangle form a column multiplication where the two-digit or three-digit number in the second line is equal to the two-digit or three-digit number in the first line multiplied by the given number (reading left to right).

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Puzzle No. 456: Mathdoku

 

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 every outlined 3x3 box that are marked with clues, there are exactly 4 clues in each box, where those clues are the results of math operations (+, -, ×, ÷). All 4 math operations must be used exactly once in each marked box.

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Puzzle No. 455: Positional 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.

The clues outside the grid indicate the sum of the digits in the 1st and Xth cells in the corresponding direction, where X is the digit in the first cell.

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Puzzle No. 454: Pointing 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. 

Each number placed in the cell with a circle appears at least once in the pointing direction starting from the end of the corresponding arrow.

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Puzzle No. 453: Odd Even Count 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 digit placed in a cell with a circle indicates the number of even digits placed in the surrounding 8 cells. An odd digit placed in a cell with a circle indicates the number of odd digits placed in the surrounding cells. Digits placed in cells without a circle may have either of these properties.

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