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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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.

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