Week4

SUDOKU WEEKLY Week 4, 2017

www.jvank.nl/Sudokus

Explanation The solution to a sudoku is a special kind of magic square: In each row and in each column the entries add to the same number, in this case, 45.

Only the digits 1,2,3,4,5,6,7,8 and 9 may be used and all nine digits have to appear on each row and in each column. On top of this, each of the nine 3 × 3 blocks that make up the sudoku should contain these nine digits.

The sudoku itself is a puzzle in which only a few of the digits are given. To solve the puzzle, all missing digits should be reconstructed. A proper sudoku is designed in such a way that it has only one unique solution.

Each week only one of the ‘regular’ sudoku’s described above, is included, the other six have extra properties: Magi sudoku's: the gray blocks are magic squares: Each row and each column adds to 15 and all nine digits should be present Diagonal sudoku's: the diagonals should contain all digits 1 to 9

WEEK 4

3 1

8 7 9

6 2 3 5 1

Monday 2 5 9 6 9 6 1 7 8 2 9 3 5 5 6 8 9 1

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WEEK 4

Tuesday 4 6 9 2 3 7 8

4 1 6 6 1 5 4 2

8 4 9

9 7

3

8 3 7

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1

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Wednesday 8 2 4 7 6 7 3 5 5 3 8 4 9 3 2 1 8 5 6

8 2

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2

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Thursday 7

2 5 7 8 1 9 5

1 7 5 5 4 9

3

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3 2

WEEK 4

Friday 4 3 2 7

3 6 2 1

1

7

5

9 7 3

5 4

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2

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Saturday 9 8 5

2 7

9 2 7

4

7 9 7

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2

4

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Sunday 2

4

2 7 1 3 8

6

6 5 7 1 2 4 4 1 9 5 1

5 2

8 5

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