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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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
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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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