The Art Of Sudoku

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The Art of Sudoku by Thomas Snyder

GRANDMASTER PUZZLES Z Z U P

L E

S

GM L UZ

U Z Z P E S U E SZ Z M

www. G M P U Z Z L E S .com

Introduction

The Art of Sudoku © 2012 by Thomas Snyder All rights reserved. No part of this book may be used or reproduced in any manner without written permission from the publisher. Grandmaster Puzzles 419 Saint Emilion Ct Mountain View, CA 94043 www.gmpuzzles.com

It is rather easy to be a prolific creator of sudoku these days. Since the “boom” in attention for this numbers puzzle, making a sudoku generator is now a common homework assignment in introductory CS classes. With an efficient algorithm, a computer can generate more puzzles in a minute than even I can solve in a lifetime. Quantity is not what interests me as a puzzle solver and designer though. Computer-generated puzzles will look like random splatterings of ink compared to the ones found here, where the human touch has created aesthetically pleasing and logically interesting challenges no computer ever could. From interesting grid designs to patterns in the digits, there is a lot to see and savor here. At first glance that “double zero” pattern looks kind of special, but take a longer look to realize that both zeroes use the exact same digits in the exact same spots which is truly unique. Seek and you’ll find a downward spiral of numbers, a puzzle that groups the evens and the odds separately, and a smiley face that might put a smile on your face. And that’s just the first few pages. By the end you’ll work through sudoku that seem impossible to start until you discover the challenging - but organic - logical step that was put in by hand. Whether you’ve solved a handful of sudoku or thousands, I’m confident you’ve never experienced puzzles quite like these before. You’ll find the sudoku organized from fairly easy to fairly hard, but depending on your skill spotting particular types of deductions your experience may vary. Enjoy! -Thomas Snyder

ISBN 978-0-9850094-0-3 2 4 6 8 9 7 5 3

Rules: Place a single digit from 1 to 9 into each empty cell so that no digit repeats in any row, column, or bold 3x3 region.

1 1 3 5 8 7 1 2 9 1 5 2

3 2 4 6 7

4

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

Thomas Snyder

8 4 3 2 1

1 2 6 8

2 4 5 1

6 4 8 5

8 6 9 2

5 1 4 3

4 1 6 7

The Art of Sudoku

7 6 2 4

5 8 7 3

5

3 1 2 3 5 4 3 8 2 4 7

6

4 6 2 7 9 1

4 1 2 3 5 4 3 8 2 4 7

Thomas Snyder

4 6 2 7 9 1

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

6 1 2 4 3 2 6 8

The Art of Sudoku

6 1 2 4 3 2 6 8

7

5 4 5 6 3 2 1 2 3 7 1 6 2

8

6

7 6 5 4

8 5 1 4 5 4 3 6 7 8 7 6

Thomas Snyder

2 3 4 5

2 9 8 7

3

7 8 2 3 4 4 3

6

5 6 7 2

1

5 4 3

2

The Art of Sudoku

5

8 9 1 7

8

8 6 5 4 3

9

7 1 3 5 7

2 4 6 8

10

8

2 4 6 8

3 5 7 9

1 3 5 7

2 4 6 8

Thomas Snyder

2 4 6 8

9 1 7 5

4 5

1

1 2 4 3

8 4

3 2

6 8

3 9 7 2 4 6 3

The Art of Sudoku

4 6 5 2

6 9

7 1

5

11

9

10

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

12

6 2

4 2 9 1 8 6

9 9 7 3

Thomas Snyder

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

The Art of Sudoku

13

11 1 9 3 8 3 7 5 9 6 8 9 3 5 8 7 4

14

12 1 2 3 4 5 6

5 6 3 4 3 8 1 8 9 7

Thomas Snyder

2 1 4 5 8 9

3 4 8 7 1 3

5 6

1 7

7 8

2 5

The Art of Sudoku

7 8 5 6 3 2

2 5 1 4 6 9

15

13 1

6 7 8

16

5

9

3

2 3 4 8 9 1

7

14 5

4 5 6

2

Thomas Snyder

1 2 3

9

4

6 7 8

3 7 6 8 5 2

8 2 7 4 9

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

1 2 3 4 5 6 7 8 9

The Art of Sudoku

17

15 8 4 9 1 3 9 6 2 8 7 5 8 6 5 4 3

18

3

16 4 5 6 3 7 2 3 1 5 6 3 1 4 6 5 3

Thomas Snyder

6 2

9 3

1 8 5 2 3 8 2

1 2 3 8

6 5

7

6 7 8

The Art of Sudoku

4 3 2 6 4 6 5

5 6

7 1

19

17

18 1 2 3 4

1 3 5 7 9 8 6 9 5 4

2 3 4

4 6 1

5 9 6

3 6 8

5 7 3 2 4

20

Thomas Snyder

3 4 5 1 2

5 6 7 8 7 4 9 1

6 5 2

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

The Art of Sudoku

21

19 2 1 5 4 3 8 7 6 9 7 8 1 4 5 6 9 2 3 5 5 4 6 9 7 4 1 3

22

Thomas Snyder

20 9 3 5 2 4 6 2 4 6 8 1 1 6 7 3 4 5 5 2 7 5 3 1

8 4 6 5 1 3 2 4 6

The Art of Sudoku

23

21 1 2 3 4 5 6 7 8 5 7 8 6 4 3

24

22 5 4 7 1 6 2 2 3 4 5 6 7 8 9

Thomas Snyder

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

7 4 2 6 1 5 3 6 9

4 5 8 2 9 7

The Art of Sudoku

25

23 9 4

2 3

26

1 2 5 2

1

2

24 3

8

8 1

4 3

6 2

9

8

Thomas Snyder

1 7

9 6

5 1

7 4

4 1 2 3 8 6 7 5

9

4 1 2 3 8 6 7 5

The Art of Sudoku

8 6 7 5

4 1 2 3

27

25 1 2 3 4 5 6 7

28

6 4 4 7

2 3 5 1

26 2 4 1 1 6 5 2 4 8 5 2 3 8 5 6

Thomas Snyder

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

The Art of Sudoku

7 8 4 5 8 4 9 3 2 7 9

29

27 1 2 3 4

5 6 7 8

2 7 3 8 5 6

1 3 7 7 2 5

30

28

1 2 3 4

Thomas Snyder

5 6 7 8

1

7

2 3

3 4 5

4 5 6 7

5 6 7 8 9

7 8 9 6

The Art of Sudoku

6 9 8 1

9 4

5

31

29 1

9

32

4 5 3 2 4 7 2

7 4 5 6 7 1 1 6 8 8 9 4 1 6

Thomas Snyder

30 9

7

5 2

8

4 6

1 4 7

1 5 4

1 6 3

2 7 3

The Art of Sudoku

5 2 3

6 2

9

7

8

33

31 2 7 1

8 1

4 8

34

7 7

32

1 8 7

2 6

3 4 5

3

Thomas Snyder

3 3

4 9

5 5 2 6

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

The Art of Sudoku

35

33 8

1 2 3 6 7 4 1

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

36

Thomas Snyder

34 7 2 5 1 2 3 4 9 8

3 6 9 8

5 9 7

3 6

3 4 5 6 7

4 7

The Art of Sudoku

2 1 4

9 5 2 3

37

35 1

2 3

38

8 5 7

2 4 3

1

9 7 5

36 1 2 9

6 4 7 3

Thomas Snyder

6 5

4

1 2

7 5 6 3

4

8 5 9

3

3

9

7

2 4

The Art of Sudoku

2

8

8 6 5

7 6

39

37 8 9 6 2 1 7 5

40

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

Thomas Snyder

38 5 6

7 8

9 6

1 2 2

3 4 5

5 4

5 1

3 4 5

6 6 7

1 9

6 1

2 3

The Art of Sudoku

41

39 4 5 6 8 7 1 2 3 7 4 8 1 3 5 4 4 8 7 1 6 9 2 8 4 8 6 1 5 1 7 2

42

Thomas Snyder

40 6 2 5 3 4 1 2 7 6 8 1 6 1 4

1

2 1 3 5 2 4 5 8 2 7 3 3 2 7

The Art of Sudoku

43

41 1 9 8 5

7 1 9 8 2

9 8 7 6 5 3 9

4 6 1

8 4 1 9 4 5 2

44

42

Thomas Snyder

3 2 6

8 6 2 7

4 3 2

7 9 8 6 7

1 9 6 4 1

The Art of Sudoku

4 5 6

8 6 1 3 7

45

43 1 2 3 4 5 6 6 5 1 1 3 9

3 2 9

46

44 5 4 7

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

Thomas Snyder

5 2 8 6 5 7 1

9 5 1 2 3 4 5

6 5 8 2 7 6 3

The Art of Sudoku

6 1 5 3 8 6 2

47

45 4 1 6 9 8 5 9 6 2 1 5 7

48

46 9 5 4 3 7 2

3 8 4 7 2 9

Thomas Snyder

9

6 5 4 1 2 3

7 4 6 8 2 9 6

6 9 8 2 7 4 8

The Art of Sudoku

4 1 2 7 1 5 9

49

47 1 2 3 4 6 9 4 5

50

9 1 7 3 2 5 4 7

4 5 6 7 2 1 7 8

Thomas Snyder

48 1 2 3 4 4 8 1 4 8 3 5 6

9 3

5 4 6

3 6 1 8

4 1 8 7

7 4 2

9 2

2 7 8 9

The Art of Sudoku

51

49 7 6 5 4 3 5 7 7 2 6 8 5 3 2 9 6 5 2 8 7 5 4 6 6 3 5 4 8

52

Thomas Snyder

50 1

2 3 4

4 5 6

9 6 3

7 3 4 8 6 1

2 4 3

7 1 9

The Art of Sudoku

9 2 5

1

53

51

3 4 8

54

9 3 6

1 2 3

1 2 3

52 4 5 6

4 5 6

Thomas Snyder

2 3 4

3 7 8 1

4

3 6

8 6 7

7 4 1 6

1 2 7 8

9 3 5 7

The Art of Sudoku

7 4 9

4 6

5

8

55

53 1 2 3 1 8 4 5 7 4 3 6 2 7 1

56

54

6 1 2 7 5 4 3

Thomas Snyder

5 9 6 8 1 9 4

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

The Art of Sudoku

57

55 1 2 3 4

7 2

56 4 5 6 2

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

58

Thomas Snyder

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

The Art of Sudoku

4 6 8 9 5 2 1

59

57

58 5 3 4 7

1 2 3 4 5 6 7 8 9

4 5 9 8

60

1 2 3 4 5 6 7 8 9

Thomas Snyder

6 5 2 3 4

8 5 7 4 3 6 5 4 3 2

1 2 3 4 5 4 5 6 6 7

The Art of Sudoku

9 6 4 1 3

61

59 1 2 3 5 9 7 8 3

62

60

3 4 8 9 2 4 6 3 8 5

7 1 3 6

7 6

Thomas Snyder

5 6 7 8 5 3 4 2

1 2

4 3

5 6 7 8

4

2 5 9 6

6 9 8 2 3 4

The Art of Sudoku

4

3

7 6 3 1 2 4

63

61 1

64

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

62 5

2

Thomas Snyder

2

8

9

1 6 4

1 7

1

2

3

7 7

6

5

The Art of Sudoku

1 4 6 3 5

4

2

5

65

63 5 6 7

4

66

2 7

4 1 5 9

3 8

64 2 7

6

Thomas Snyder

1 5 9

3 8

6

5 6 2

1 3 5 7 7 9 3 8

2 4 6 8

2 5 9 8

2 8 1 4

2 4 6 8

The Art of Sudoku

7 9 3 8 1 3 5 7

67

65 1

2

3

4 8

4 5

7 6 9 1 2 7

68

66 7 6

8

5 1

2 9 5 4 4 6

Thomas Snyder

9

1 2 3 7

6 5 4

5 9

4 2 9

8 6

4 8 3

The Art of Sudoku

1 3

4 5 6

9 8 7

69

7 5 3 1

70

1 8 1 8 7 6

67

68

1

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

3 4 6 7 9

7 4 2 3 2 3

Thomas Snyder

6 1 7 5

The Art of Sudoku

71

69 1

2 3 4

5

6 5 8

2

6 7 5 4 3

1 7 6 2

72

70

1

6 1 2 1

Thomas Snyder

4 3

7

5

1

9

7 3

1 2 8

1 2

5 2

3 8

3 4

The Art of Sudoku

5 3 4

7 6

8 6

4 2

73

4 5 3

74

1 9 7

6

71

72

1 2 3

1 2 3

5 8 8

9

6 1

4 3 8

Thomas Snyder

4 2 9

2

5 1 6

1 4 5

8

3

9

9 5

3

6

7

2 4 6

The Art of Sudoku

1

5

7

3 2 4

75

73 1 9

1 2 4 8

76

3

7

4 6

3

5

74 5

6 4

7

Thomas Snyder

7

8 9

3

2

9 1

1 3 4 2 4 5 4 5

7 6

3 6

4 7 3 2 8 2 6 1

1 8

The Art of Sudoku

8 3

77

75 1 3 5 6 7 1 9 4

76

2 4 8 5

1 2

4 2 1 6

78

Thomas Snyder

2 5 7 6 9 8 4 3

8

1 9 6 3 4 5

5 6 8

6 2 7

1 2 5

2 9 7

The Art of Sudoku

4

6 2

79

77 1 2 3 4

7 3 6 6 8 5 3 5 1

80

78 6 7 1 4 9 8

2 4 7

Thomas Snyder

2 8 7 3 6 7 8

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

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

The Art of Sudoku

81

79 2 4 6 8

82

3

6

5

8

7

4

8 1 9 2

80 5

9

2

7

9

2

Thomas Snyder

6 2 3 1

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

The Art of Sudoku

83

81 1

2 7 9 1

84

82

3 4 5 6 6 5

2

4

7

3 2

3 8 9 1

Thomas Snyder

6 3 8 9 4 1 6 3

8 9 1 5

3

7 5 2 4 3 8 2 1

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

The Art of Sudoku

85

83 9 5

1 7 5 2 4

2

86

6 8

5 3

2 6

84 4 2

1 7

Thomas Snyder

2 4

6

6 2 3 9 5

1 2 3 4 8

9 3

2

5

7

9 6 3 4

2

9

9

The Art of Sudoku

8 1 7 9 2

6 5

6 4 8 9

87

85 8 6

9

3

1

2

4

1

88

86

2

9

8

2 5

7

8

6

7

9

Thomas Snyder

3

2 1

4

9

6

5

5

8 4

3 4

2 1

7 8

5 2 3 1 4 2

6 5 9 6 7 9

4 5

The Art of Sudoku

8 7

8 5

89

87 1

3 2

90

2 1 3

6 7 5 2

4 8

1

9

88 2 5

6 9 3 4

Thomas Snyder

7 6 8

1 4 7

9

2

3

8 4

4

5

6

1 7

5 4

2 7

9 4

The Art of Sudoku

2

3

6

3 7 1

2

3

91

89

92

90

1 3 5 5 7 3 1 9

2 4 6 4 8 6 8 2

4 6 8 6 2 2 8 6

3 5 7 1 5 7 9 1

Thomas Snyder

1 3 9 6

2 4 5 7 1 9

6 8 1 5

5 3 2 4 7 8

The Art of Sudoku

5 7 3 1

93

91 8 5 3

3 1

7 4

94

4 9

8 2

4

1 9 6 2 8

1

2 1 4 5 8

92

9 4 7 1

Thomas Snyder

3 4 7

1 5 3

3

5

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

4 1 4 9

The Art of Sudoku

9

2

7 2 1

95

93 1

5 2 6

96

4

3 9

2 3

3 7 2

94 6 7 2

7 8

Thomas Snyder

4 8 5

7

5 3 2

6 8 3

2 4 8

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

The Art of Sudoku

1 2 5

5 7 6

97

95 1 2 3 4 6 4 7 1 8 9 5 7 6 8 7

98

96 5 6 7 8 3 5 9 4 1 3 2 4

Thomas Snyder

8

2

7 1 5 8 9 3

4 5 6 7 1

2

4 7 6 5

3

5 8 4 9

The Art of Sudoku

8

8

6

2

99

97 4 5 6 4 2 3 7 8 9

1 2 3

3 4 5

5 6 7

5 6 7

4 7 6 9

9 2 1

8

5

2

6

2 8 4

9 3 2

6 4 3 8

1 2 3 6 7 8 4 5 6 1

100

98

Thomas Snyder

9

The Art of Sudoku

101

99 1 2 6

102

2 3 7

3 3 4 8

4 5

4 5 6

100 5 5 6 7

Thomas Snyder

6 7

9 7 8

6 8 9

6

5

1 7

4 1

7

2 8

1 9

5 3

3

7

4

The Art of Sudoku

4

5 6

4 2

1

7

103

101 1 2 3 4 5 6

6 1 9 9 3 5

104

2 6 9 1 7 8

8 9 2 4 5 7

Thomas Snyder

102 3 2 9 6 3 2 7 7 5 4 6 1 5 2

6

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

The Art of Sudoku

105

103 4 9 5

1 7 4

5 2

2 8

6

106

6

2

104

3

4 5

Thomas Snyder

3 9

5 2 1

6 2 7

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

The Art of Sudoku

2 6 3 5

107

105 7 1 4 6

108

2

1 2 3 8 9 3 7 5

106 4

6

2 7 8 9

Thomas Snyder

5

4

6 1 3

3 2 1

4

5

6

1 7

7 1 8

9

8 9 2

3

5

8

The Art of Sudoku

6

9

9 6 8

109

107 1 3 5 1 9 7 3

110

2 4 6 3 7 5 9

6 8 2 4

1 3 9

Thomas Snyder

108 4 8 2 6 6 4 8

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

The Art of Sudoku

111

109 7

8

5 9

2 7 5

1

112

4

7

110 3

4

6 7

Thomas Snyder

6

1 8

9 8 3 7

2

1 3 5 7 9

3 5 9 4 6

1 8 6 2 4

4 3 6 4 2

The Art of Sudoku

1 7 6 3 5

113

111 6

1

2

114

7

112

9

3

8 4 6 2

3 2 4 7

2 6 4 8

8 3 5 1

9

4

Thomas Snyder

3 2

2

6

7 4

5 9

3 6

4 3

2 1

1 7 2 6

5

8 2 1 5

The Art of Sudoku

7 4

6 1

115

113 1 3 5 7 9 3 1 4 6 2 9 7

116

8

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

Thomas Snyder

114 5 3 4 5 1 2 3 6 7 8 4 1 3 5 8

1 3 7

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

The Art of Sudoku

117

115 4 7 3 6 8 2

1 2 3 4 5 6

2 9 7 4 9 8

118

116

Thomas Snyder

7 5 1 6 4 6

9

2 3

8

1 2 7 4

9 8 6

3

5

7 4 2

The Art of Sudoku

5 7 4 8

9

6 5

3

119

117 1 2 3 4 5 6 7 2 8 1 3 7 5 2 4 9 4 3 8 6 8 3 2 4 7 4 9 5

120

Thomas Snyder

118 2

9 8

6

7 2 3 2 1 9 6

3

1 7

4

6

9 3 8

4

8 4

The Art of Sudoku

6

6 9

5 7

8

2

121

119

8

122

2 1 5 8

3 4

8 4 7

5 2 1

6 7 4

3 1

Thomas Snyder

120 1 8 7 3 2

9

5

9

2 6 4 8

3 4

5

6 7

9 7 2

3

1 5

The Art of Sudoku

9 8 3 1 6

2

4

123

1 8 7 5 6 9 3 2 4

6 7 1 5 4 3 8 2 9

4 3 2 1 7 6 5 8 9 124

3 9 2 8 7 4 5 1 6

8 9 2 7 1 6 5 4 3

5 1 8 2 4 9 7 6 3

5 4 6 2 3 1 9 8 7

4 5 3 9 8 2 6 7 1

6 9 7 3 5 8 1 2 4

6 7 1 9 4 5 2 3 8

3 8 4 6 2 7 9 1 5

7 6 5 4 8 1 9 3 2

1 8 5 3 7 1 2 4 6 9

3 2 6 7 1 9 5 3 8 4

5 8 2 9 6 3 7 4 5 1

9 2 4 3 8 6 1 7 5

9 1 5 4 3 8 2 6 7

1 4 3 9 2 5 6 7 8

4 6 9 1 2 8 7 5 3

7 2 8 3 5 1 4 9 6

3 8 1 5 6 4 2 9 7

7 1 8 4 5 3 6 9 2

1 3 9 8 6 4 7 5 2

2 5 4 7 9 3 8 1 6

2 3 5 6 9 7 8 4 1

5 4 6 2 7 9 1 3 8

9 7 6 8 1 2 3 4 5

9 1 5 2 3 6 4 8 7

8 1 4 6 2 5 7 9 3

5 6 2 9 8 7 4 1 3

2 8 4 7 5 9 1 6 3

6 2 9 7 3 4 8 1 5

9 3 4 1 2 5 6 7 8

Thomas Snyder

3 6 7 4 1 8 9 5 2

7 3 5 8 1 9 6 4 2

7 8 1 4 3 6 9 5 2

8 3 6 5 9 7 2 1 4

5 9 3 2 4 8 1 7 6

8 9 5 3 6 2 7 4 1

2 7 5 9 1 2 4 6 3 8

4 1 4 6 5 9 7 2 3 8

6 2 4 6 7 1 9 8 3 5

4 2 1 8 6 3 7 9 5

2 8 7 1 6 3 9 5 4

3 1 7 5 4 8 2 9 6

1 7 3 6 8 2 5 4 9

3 5 8 9 7 6 4 2 1

4 2 3 8 9 1 5 6 7

5 4 8 9 7 1 3 2 6

4 7 2 3 8 1 5 6 9

6 5 9 2 7 3 1 8 4

6 9 2 3 4 5 8 7 1

9 6 1 4 5 2 3 8 7

1 7 8 6 5 4 3 2 9

1 5 8 4 3 7 9 2 6

5 6 8 9 1 4 3 7 2

5 6 2 4 7 1 9 3 8

3 7 6 5 2 9 1 4 8

2 7 1 3 5 8 9 4 6

4 1 3 9 8 2 6 5 7

9 4 2 6 8 1 5 7 3

3 9 4 2 6 7 8 1 5

8 9 7 6 3 5 1 2 4

6 2 4 8 9 3 7 5 1

9 8 2 5 3 1 7 6 4

9 3 5 8 1 4 7 6 2

7 8 9 7 1 6 5 2 3 4

9 6 3 7 4 2 9 1 5 8

11 6 8 4 3 2 7 5 1 9

5 1 3 7 4 2 6 8 9

1 4 5 7 8 6 2 3 9

7 2 1 5 6 9 4 8 3

7 3 5 9 1 4 8 6 2

8 1 3 6 4 2 5 9 7

1 7 8 2 4 6 3 9 5

2 6 1 3 5 8 4 9 7

4 2 9 1 7 5 6 8 3

2 4 9 1 5 3 8 7 6

4 8 9 2 7 6 3 1 5

7 5 6 8 9 3 4 2 1

3 5 6 7 9 8 2 4 1

3 4 5 7 8 6 1 2 9

8 1 6 2 4 7 3 9 5

6 2 1 3 4 5 7 8 9

1 9 6 4 2 5 3 8 7

5 2 7 1 9 3 8 6 4

3 9 7 8 6 2 1 4 5

The Art of Sudoku

2 8 7 3 9 1 6 4 5

9 4 3 5 6 8 7 2 1

4 8 5 7 9 1 3 2 6

7 3 2 6 5 9 8 1 4

1 5 8 3 2 6 9 4 7

9 5 6 2 3 4 8 1 7

8 9 1 4 8 3 7 2 5 6

10 2 6 4 8 7 9 5 1 3

12 7 1 4 5 8 9 2 6 3

5 6 8 1 4 2 9 7 3

4 2 9 5 1 3 7 6 8

6 5 3 2 7 8 4 9 1

8 7 1 9 6 4 5 3 2

3 7 9 4 1 5 2 8 6

7 8 1 6 3 2 4 5 9

4 3 2 9 5 1 6 7 8

6 9 5 7 8 4 1 3 2

8 3 2 6 1 7 5 9 4

1 7 8 9 5 6 4 3 2

2 4 9 1 7 3 6 5 8

5 6 3 4 2 8 9 7 1 125

4 5 9 1 2 6 7 8 3

7 8 9 3 5 4 2 1 6

2 3 8 6 9 5 4 7 1 126

1 8 6 7 5 3 4 2 9

2 4 6 9 1 7 3 8 5

4 5 9 8 1 7 3 2 6

7 2 3 4 8 9 1 5 6

3 5 1 6 8 2 7 9 4

1 6 7 2 3 4 8 9 5

6 7 2 3 4 8 9 1 5

1 9 7 2 4 8 5 6 3

3 2 4 9 8 6 5 1 7

13 3 1 8 9 7 5 6 4 2

15 8 6 5 7 3 9 1 4 2

17 5 8 6 1 7 2 9 4 3

9 4 5 6 1 2 3 7 8

4 3 2 1 6 5 8 7 9

7 9 1 5 4 3 6 8 2

8 9 4 5 6 1 2 3 7

5 1 3 8 9 6 4 2 7

9 1 2 3 6 8 7 5 4

5 3 1 2 9 7 8 6 4

6 7 8 4 2 3 9 5 1

6 4 5 7 2 9 1 3 8

2 6 7 8 3 4 5 9 1

9 2 4 5 7 1 6 3 8

8 7 3 4 5 1 2 6 9

9 6 8 7 1 2 3 4 5

5 6 2 8 4 1 9 3 7

1 9 4 5 3 2 7 8 6

7 1 3 5 4 8 2 9 6

1 9 7 5 2 3 6 4 8

2 8 7 6 1 9 4 5 3

Thomas Snyder

5 4 2 9 6 3 8 1 7

8 4 3 7 9 6 1 5 2

3 5 6 7 4 8 9 1 2

2 9 1 4 7 6 5 3 8

7 1 4 3 8 2 5 6 9

4 3 5 8 2 7 1 6 9

14 3 7 6 8 5 1 4 2 9

16 9 2 8 6 1 5 4 7 3

18 9 6 8 4 5 1 3 2 7

4 8 5 3 2 9 7 6 1

6 3 5 4 7 9 2 8 1

7 1 2 9 6 3 5 4 8

8 2 7 1 9 4 6 5 3

4 8 9 1 5 7 3 2 6

6 2 1 3 9 5 8 7 4

1 5 4 6 3 7 9 8 2

3 7 1 2 6 4 8 9 5

5 7 3 2 8 4 6 9 1

6 3 9 2 8 5 1 7 4

2 5 6 9 3 8 7 1 4

8 4 9 1 7 6 2 3 5

9 1 3 6 7 4 8 2 5

6 8 9 1 4 5 7 3 2

8 9 4 7 1 6 2 3 5

5 6 8 9 1 2 7 3 4

1 7 3 6 2 9 8 4 5

1 6 3 5 9 2 4 7 8

4 2 7 5 8 3 9 6 1

2 4 5 7 3 8 6 9 1

2 7 5 3 8 4 6 9 1

7 5 6 2 4 8 1 9 3

3 9 2 8 7 1 4 5 6

9 1 8 6 7 3 5 2 4

19 8 4 1 3 5 9 2 7 6

21 7 1 8 4 5 6 9 2 3

23 7 4 2 8 5 1 9 6 3

2 3 9 1 6 7 5 4 8

5 6 4 3 9 2 1 8 7

5 3 6 4 2 9 1 8 7

1 8 2 7 3 6 4 5 9

4 2 7 9 1 3 5 6 8

4 8 7 2 6 5 3 1 9

3 7 4 8 9 5 6 1 2

8 3 1 5 6 4 2 7 9

3 2 9 1 4 7 8 5 6

6 9 5 4 2 1 3 8 7

9 5 6 2 8 7 3 1 4

6 5 1 9 3 8 7 4 2

7 2 3 9 8 4 6 5 1

7 8 6 3 5 9 4 2 1

7 9 4 3 6 5 2 8 1

1 4 5 2 6 7 8 9 3

9 2 3 8 4 1 5 7 6

5 1 6 8 7 2 3 9 4

The Art of Sudoku

6 8 9 1 3 5 7 4 2

1 4 5 7 2 6 3 9 8

3 2 8 1 9 4 7 6 5

8 1 2 3 9 6 5 7 4

2 5 9 4 7 8 1 6 3

4 3 2 5 1 6 8 7 9

20 9 7 4 5 2 1 3 8 6

22 3 6 8 9 1 5 7 4 2

24 6 5 7 9 2 8 1 4 3

3 5 6 4 7 8 1 2 9

5 3 8 6 4 2 9 1 7

2 9 7 8 1 3 4 6 5

4 6 1 7 5 9 2 3 8

4 1 7 6 3 2 8 5 9

5 9 4 1 6 3 2 8 7

8 3 2 5 9 7 6 1 4

6 7 1 2 8 4 9 3 5

9 8 1 4 3 7 6 5 2

2 4 3 6 8 9 5 1 7

1 6 5 7 4 3 9 2 8

8 7 9 2 5 1 4 3 6 127

5 8 7 3 1 9 2 6 4

1 2 3 4 7 5 8 9 6

1 8 2 6 5 7 3 4 9 128

1 2 3 4 5 6 7 8 9

4 8 9 2 6 1 5 7 3

7 9 4 3 2 1 6 5 8

6 4 9 7 8 2 5 1 3

5 6 7 8 9 3 1 2 4

6 3 5 8 9 4 7 2 1

4 7 5 8 6 3 1 9 2

6 3 4 9 8 7 2 5 1

3 2 6 4 8 9 5 1 7

25 3 1 8 2 9 5 6 4 7

27 2 1 8 5 3 4 9 6 7

29 8 7 9 5 1 3 2 6 4

9 6 2 1 4 7 3 5 8

7 9 5 6 1 2 3 4 8

5 4 1 2 7 6 8 9 3

8 3 4 6 7 1 9 2 5

3 5 6 7 2 8 4 1 9

4 5 7 1 3 2 9 8 6

7 9 1 5 2 4 8 3 6

9 4 1 3 5 6 7 8 2

2 1 3 9 6 8 4 7 5

2 5 6 9 3 8 4 7 1

8 7 2 1 4 9 6 3 5

9 6 8 7 4 5 1 3 2

6 2 1 9 5 4 8 3 7

2 9 4 6 1 5 3 8 7

4 7 6 3 9 2 5 1 8

8 3 9 7 1 2 6 5 4

7 8 5 2 9 3 6 1 4

8 1 3 5 7 4 9 6 2

Thomas Snyder

7 4 5 3 6 8 2 1 9

1 6 3 7 4 8 5 9 2

2 5 9 6 1 8 4 3 7

1 5 6 4 3 7 9 8 2

9 4 8 5 3 6 2 7 1

9 3 8 1 2 5 7 4 6

26 9 7 2 6 8 1 5 4 3

28 5 2 6 4 7 1 8 3 9

30 7 4 1 8 6 9 3 2 5

4 8 3 2 9 5 7 6 1

3 7 1 8 2 9 4 6 5

6 2 5 7 4 3 8 9 1

3 6 7 5 4 9 1 2 8

4 5 9 3 8 7 1 2 6

5 8 2 9 3 1 6 7 4

5 9 8 1 2 3 4 7 6

8 1 2 9 6 4 7 5 3

3 6 4 2 8 7 1 5 9

2 1 4 8 7 6 3 9 5

6 3 7 1 5 2 9 4 8

1 9 7 4 5 6 2 8 3

2 7 9 6 5 4 1 3 8

8 2 7 3 5 4 6 1 9

4 1 7 9 6 8 2 3 5

5 1 6 8 9 3 2 7 4

5 3 1 9 8 6 7 4 2

3 2 8 1 5 7 9 6 4

3 8 4 1 2 7 6 9 5

9 6 4 1 7 2 5 8 3

9 5 6 4 3 2 8 1 7

6 2 1 5 8 9 7 4 3

1 7 9 2 6 5 8 3 4

5 7 2 3 4 9 6 8 1

31 7 4 5 2 3 6 8 1 9

33 2 8 6 4 3 1 9 7 5

35 6 9 3 8 7 1 4 5 2

8 9 3 7 4 1 5 6 2

3 4 5 7 9 8 1 2 6

1 8 4 5 2 6 7 9 3

9 6 2 3 7 5 4 8 1

6 1 3 8 4 9 2 5 7

7 3 9 6 1 4 5 2 8

1 3 8 4 6 2 9 5 7

4 9 2 5 1 7 3 6 8

8 4 1 2 9 5 3 7 6

4 5 7 9 1 8 3 2 6

7 5 8 6 2 3 4 9 1

2 6 5 7 8 3 1 4 9

5 2 3 1 6 9 4 7 8

2 4 7 5 1 3 6 9 8

3 8 9 1 2 4 7 6 5

7 1 4 3 8 5 2 6 9

6 1 5 9 7 8 3 2 4

1 4 5 7 6 3 2 9 8

The Art of Sudoku

6 9 8 7 4 2 3 1 5

8 3 9 2 6 4 5 1 7

2 7 6 5 8 9 4 1 3

3 7 2 4 9 1 8 5 6

7 6 4 1 8 2 9 3 5

8 2 7 9 4 5 1 3 6

32 4 6 1 8 5 7 9 2 3

34 1 9 3 4 5 6 7 8 2

36 5 1 4 6 3 8 9 7 2

9 8 5 6 2 3 1 4 7

8 4 7 9 1 6 5 3 2

1 5 6 2 3 8 7 9 4

2 3 9 5 7 4 6 8 1

5 2 8 7 3 9 1 4 6

4 8 1 6 9 5 2 7 3

3 7 6 8 2 1 4 5 9

9 5 2 3 4 7 8 6 1

6 9 3 2 1 7 5 8 4

4 6 2 3 9 1 8 5 7

7 3 1 8 5 2 6 4 9

9 5 8 4 7 6 3 2 1 129

4 9 2 7 5 8 6 3 1

9 2 1 5 4 7 3 8 6

3 1 9 8 5 4 7 2 6 130

8 6 3 4 2 1 7 5 9

4 3 7 2 8 6 5 9 1

4 7 8 2 6 1 3 5 9

7 5 1 6 3 9 2 4 8

5 6 8 1 3 9 4 2 7

2 6 5 3 9 7 8 1 4

6 3 7 8 4 5 9 1 2

6 9 4 7 2 1 8 5 3

1 3 7 9 2 8 4 6 5

37 2 4 9 3 1 7 8 6 5

39 3 7 5 8 6 4 9 1 2

41 9 5 4 6 7 3 1 8 2

1 8 5 9 6 2 3 7 4

8 1 2 9 5 3 6 7 4

8 2 6 1 4 5 9 3 7

9 1 8 5 7 3 4 2 6

7 5 6 3 9 2 1 4 8

7 4 1 5 3 2 6 9 8

5 7 4 2 8 6 1 9 3

1 4 9 6 7 8 2 3 5

6 8 2 7 1 9 5 4 3

3 2 6 1 9 4 5 8 7

2 8 3 4 1 5 7 6 9

5 9 3 4 8 6 2 7 1

4 3 9 6 8 5 1 2 7

5 8 6 1 9 7 2 4 3

7 9 5 8 6 1 4 3 2

2 6 7 9 1 4 8 3 5

1 9 3 2 4 6 8 7 5

6 8 4 5 3 2 1 7 9

Thomas Snyder

5 8 1 2 7 3 4 9 6

7 2 4 3 8 5 1 6 9

1 2 3 9 7 4 6 5 8

6 9 2 3 4 8 5 7 1

6 5 8 7 2 3 9 1 4

5 6 2 3 9 8 7 4 1

38 1 5 8 7 6 2 3 4 9

40 3 4 7 6 1 9 5 8 2

42 8 4 7 1 2 5 3 9 6

7 4 3 1 5 9 6 8 2

2 1 9 8 5 4 6 3 7

9 3 1 6 4 7 8 2 5

8 2 4 5 9 6 7 1 3

4 3 5 9 6 1 7 2 8

2 7 9 4 1 6 5 8 3

9 1 6 8 3 7 2 5 4

9 6 2 4 7 8 3 5 1

3 1 8 7 5 9 2 6 4

3 7 5 4 2 1 9 6 8

8 7 1 5 3 2 4 9 6

4 5 6 2 8 3 9 1 7

1 4 6 8 9 5 7 3 2

5 3 2 4 9 6 1 7 8

1 3 7 2 6 4 9 8 5

2 5 7 4 6 3 1 8 9

4 6 7 1 8 2 5 9 3

2 4 6 8 9 5 7 1 3

3 8 9 1 7 2 6 4 5

1 8 9 5 3 7 2 4 6

8 5 9 7 3 1 2 4 6

8 2 5 3 1 7 9 6 4

6 5 3 8 7 4 9 2 1

9 8 1 3 4 6 5 7 2

43 7 6 1 9 2 4 8 5 3

45 9 7 8 2 1 3 6 5 4

47 4 6 3 5 2 7 1 9 8

9 3 4 5 8 6 2 7 1

2 4 1 6 5 9 8 3 7

5 7 2 9 1 8 6 3 4

6 1 3 7 4 9 5 2 8

3 1 6 9 4 5 7 8 2

6 2 4 1 7 3 8 5 9

5 9 2 6 3 8 4 1 7

7 2 5 3 6 8 4 1 9

7 9 8 4 5 2 3 6 1

4 7 8 2 5 1 3 9 6

8 9 4 7 2 1 3 6 5

3 1 5 6 8 9 4 2 7

7 6 4 2 1 5 8 3 9

9 2 7 1 5 8 6 3 4

7 1 8 9 3 5 6 4 2

3 9 5 8 6 7 1 4 2

1 8 3 2 4 6 9 5 7

6 3 5 2 8 4 9 1 7

The Art of Sudoku

8 1 2 3 4 9 5 6 7

6 5 4 3 9 7 8 2 1

9 2 4 7 6 1 5 3 8

9 2 1 7 8 3 4 5 6

3 4 5 6 1 9 2 7 8

5 7 6 4 1 8 3 2 9

44 6 3 7 4 5 2 9 8 1

46 2 9 1 7 8 3 5 4 6

48 8 9 2 3 5 7 1 6 4

5 4 8 6 9 1 7 2 3

1 5 3 9 2 4 6 7 8

4 7 6 1 3 8 2 9 5

2 8 9 5 7 6 3 1 4

7 6 8 4 2 5 1 9 3

8 3 2 9 6 4 7 1 5

5 7 9 8 3 1 4 6 2

4 1 6 5 7 2 3 8 9

1 4 3 6 2 9 7 8 5

2 8 9 1 7 3 4 5 6

3 5 7 8 4 6 2 9 1

4 6 1 5 9 2 8 7 3 131

1 3 4 6 9 7 8 5 2

7 2 6 1 3 4 8 5 9

4 2 5 1 3 9 8 6 7 132

2 5 7 8 4 3 9 1 6

5 9 3 6 2 8 4 1 7

8 9 6 7 5 4 3 2 1

8 9 6 5 2 1 7 4 3

1 8 4 5 9 7 6 2 3

1 3 7 2 8 6 4 9 5

7 2 1 3 8 4 6 9 5

2 7 8 4 6 5 9 3 1

2 1 8 4 7 5 6 3 9

49 6 8 3 2 5 9 1 7 4

51 3 1 5 2 8 9 7 6 4

53 6 7 4 3 9 2 5 1 8

5 4 9 7 1 6 2 3 8

6 4 9 3 7 1 2 8 5

3 5 9 8 6 1 2 7 4

4 7 2 9 6 5 3 8 1

8 5 2 9 4 3 1 7 6

7 4 2 6 1 8 9 5 3

3 1 8 4 7 2 5 6 9

9 6 1 7 5 2 3 4 8

5 6 1 9 4 3 7 8 2

9 6 5 1 3 8 4 2 7

4 3 7 8 1 6 5 9 2

9 8 3 5 2 7 1 4 6

1 5 9 6 8 2 3 4 7

3 6 9 7 1 4 8 2 5

5 3 1 9 7 2 6 4 8

6 2 7 1 4 3 5 8 9

7 2 8 9 3 5 6 1 4

7 6 2 3 4 8 5 9 1

Thomas Snyder

8 3 4 7 5 9 1 2 6

5 4 1 8 2 6 3 7 9

8 4 9 1 5 6 3 7 2

5 4 8 9 6 1 2 7 3

2 5 7 3 4 8 1 9 6

1 2 3 4 6 7 8 5 9

50 9 7 3 4 2 8 6 1 5

52 4 1 6 2 9 7 5 8 3

54 9 8 4 2 3 5 1 6 7

2 1 6 3 7 5 4 9 8

9 8 3 6 5 1 7 4 2

6 7 5 8 1 9 2 3 4

4 6 5 8 1 7 9 3 2

6 7 5 4 8 9 2 3 1

4 1 6 7 2 3 9 8 5

3 8 1 2 9 6 7 5 4

8 3 4 1 6 2 9 5 7

3 9 7 5 8 1 4 2 6

7 9 2 5 3 4 8 6 1

1 9 2 5 7 3 4 6 8

2 5 8 6 9 4 7 1 3

1 6 8 5 7 2 4 3 9

8 6 3 2 1 5 7 4 9

1 3 6 5 9 2 7 8 4

2 4 5 9 6 3 7 8 1

9 1 4 7 3 6 2 5 8

2 4 5 7 8 1 9 3 6

3 7 9 8 4 1 6 2 5

7 2 5 8 9 4 3 6 1

7 9 8 4 6 3 2 1 5

9 3 7 1 5 6 8 4 2

4 3 6 9 2 7 8 1 5

3 6 9 2 4 8 5 7 1

55 8 1 2 7 3 4 5 9 6

57 1 5 7 6 4 8 9 3 2

59 4 1 2 9 7 5 8 6 3

4 5 6 2 8 9 3 1 7

2 8 9 3 5 1 4 7 6

8 5 7 1 3 6 4 9 2

5 2 4 3 1 7 9 6 8

6 9 1 4 7 2 5 8 3

5 8 3 6 2 9 1 4 7

6 8 1 4 9 5 2 7 3

5 4 2 1 8 3 6 9 7

6 7 1 8 5 4 3 2 9

7 9 3 6 2 8 1 5 4

3 7 8 5 6 9 1 2 4

9 2 4 3 1 7 6 5 8

4 2 5 9 8 6 3 7 1

7 9 2 6 5 1 3 4 8

9 7 1 3 8 5 4 2 6

3 9 8 7 2 1 4 5 6

1 8 3 9 4 2 7 5 6

5 8 2 4 1 6 7 3 9

The Art of Sudoku

1 6 7 5 3 4 9 8 2

6 5 4 7 8 3 2 9 1

4 3 6 2 9 7 1 5 8

6 5 2 1 4 7 8 3 9

3 1 9 8 2 4 5 6 7

3 4 7 9 5 8 6 1 2

56 9 1 3 2 5 8 7 6 4

58 4 2 5 1 6 7 8 3 9

60 6 1 8 7 4 2 5 9 3

8 7 4 3 6 9 1 2 5

5 3 1 4 7 2 6 9 8

7 4 6 8 9 5 2 1 3

2 8 9 6 1 3 5 4 7

8 7 6 5 3 9 1 2 4

2 6 8 4 7 5 9 1 3

5 4 1 3 9 8 6 7 2

9 3 7 2 1 6 4 8 5

2 5 9 6 3 1 8 7 4

1 9 5 8 6 3 2 4 7

8 2 4 5 7 9 3 6 1

7 6 3 1 2 4 9 8 5 133

1 6 7 3 9 2 4 5 8

5 7 3 6 8 9 4 2 1

7 8 1 2 9 3 6 5 4 134

9 2 8 1 4 5 6 7 3

6 1 9 5 4 2 3 7 8

5 2 9 4 6 1 8 3 7

5 4 3 6 7 8 9 1 2

2 4 8 3 1 7 5 6 9

3 6 4 8 5 7 9 2 1

6 5 9 4 8 1 2 3 7

9 6 7 1 5 3 2 8 4

2 4 5 9 8 6 1 7 3

61 2 7 1 9 5 3 8 4 6

63 3 5 4 9 2 8 6 1 7

65 1 3 8 7 4 5 2 9 6

3 8 4 7 2 6 1 9 5

8 2 1 7 6 4 9 3 5

9 7 6 3 1 2 5 4 8

8 9 5 2 3 4 7 6 1

1 8 5 2 9 6 7 4 3

8 1 3 5 7 9 4 6 2

7 1 2 5 6 9 3 8 4

4 3 2 8 7 5 1 9 6

6 9 2 1 3 4 7 8 5

4 3 6 8 1 7 5 2 9

7 9 6 4 3 1 8 5 2

4 5 7 6 2 8 3 1 9

7 5 8 2 3 4 9 1 6

1 5 8 2 7 3 9 4 6

1 8 9 7 3 2 6 5 4

2 1 6 5 8 9 3 7 4

3 7 6 4 9 8 1 5 2

2 7 4 6 1 5 9 8 3

Thomas Snyder

3 9 4 1 6 7 2 8 5

9 4 2 6 1 5 3 7 8

3 6 5 4 8 9 7 2 1

8 4 1 6 5 2 7 3 9

6 3 4 8 5 9 7 2 1

8 4 2 5 9 3 1 7 6

62 5 2 9 8 7 3 4 6 1

64 2 9 1 3 6 7 5 8 4

66 5 1 3 8 7 6 4 9 2

6 7 3 4 9 1 5 2 8

5 8 7 1 4 2 6 9 3

6 9 7 2 4 1 8 3 5

9 8 2 3 1 5 6 4 7

7 1 3 5 2 4 8 6 9

7 3 8 1 5 4 2 6 9

1 3 5 7 4 6 8 9 2

8 2 9 7 3 6 4 1 5

9 2 1 3 6 7 5 4 8

4 6 7 9 2 8 1 5 3

4 6 5 9 8 1 2 3 7

4 5 6 9 2 8 3 1 7

2 9 7 5 6 3 1 4 8

1 8 4 7 2 9 5 3 6

7 2 6 4 5 3 8 9 1

4 6 8 7 1 9 2 5 3

5 2 7 3 8 6 9 1 4

4 1 9 6 8 2 7 3 5

3 1 5 2 8 4 9 7 6

3 9 6 4 1 5 8 7 2

5 8 3 1 9 7 4 6 2

5 8 9 3 7 2 4 6 1

2 1 5 9 7 8 4 6 3

1 6 5 2 3 8 9 7 4

67 1 2 3 4 5 6 7 8 9

69 4 6 9 5 3 1 7 2 8

71 2 9 8 7 4 1 6 5 3

6 7 4 8 9 1 3 2 5

8 7 3 6 4 2 1 9 5

3 7 4 9 6 5 1 2 8

9 4 1 6 2 5 8 3 7

9 5 2 1 6 4 3 8 7

6 4 1 3 2 9 5 8 7

7 5 2 9 3 8 6 1 4

7 4 8 2 9 3 6 5 1

9 5 2 8 7 4 3 1 6

8 3 6 1 4 7 5 9 2

6 3 1 8 5 7 2 4 9

8 3 7 5 1 6 2 4 9

6 1 3 2 9 4 8 7 5

2 3 8 4 9 7 6 1 5

7 2 3 1 4 5 8 6 9

7 4 8 1 5 3 6 9 2

4 9 5 1 6 8 7 2 3

5 1 8 6 9 2 3 4 7

The Art of Sudoku

9 5 2 8 7 6 1 4 3

6 7 1 3 2 5 9 8 4

6 9 4 7 8 3 2 5 1

8 7 1 3 4 2 9 5 6

9 1 3 2 4 6 5 7 8

1 8 7 4 6 9 5 3 2

68 2 6 5 9 8 7 4 3 1

70 8 4 2 7 5 1 3 9 6

72 2 5 6 8 3 1 9 7 4

3 9 4 6 1 5 7 2 8

4 8 9 5 2 1 3 6 7

1 2 6 7 3 9 5 8 4

5 3 7 4 6 8 2 1 9

5 6 7 9 8 3 2 4 1

1 5 9 8 3 2 4 6 7

7 2 6 5 1 4 8 3 9

3 8 4 6 7 9 1 5 2

3 4 9 2 5 7 1 8 6

9 6 2 5 7 8 4 1 3

4 3 5 9 1 6 7 2 8

8 7 1 3 2 4 6 9 5 135

7 1 3 2 9 8 5 6 4

9 2 5 1 7 8 3 6 4

5 1 2 3 4 9 7 8 6 136

9 5 2 6 7 4 3 1 8

4 8 6 9 5 3 1 2 7

6 9 4 2 7 8 3 5 1

8 6 4 3 5 1 2 7 9

1 3 7 4 2 6 5 9 8

8 7 3 6 5 1 9 2 4

1 2 9 8 4 7 6 5 3

2 4 8 5 6 1 7 3 9

2 4 6 8 9 7 5 1 3

73 4 3 6 1 2 5 8 9 7

75 6 7 1 2 3 9 4 8 5

77 1 8 9 5 6 3 2 4 7

5 8 7 9 6 3 4 2 1

5 9 3 7 8 4 2 1 6

3 5 7 4 1 2 8 6 9

2 4 1 7 8 6 9 3 5

7 5 9 8 1 2 6 4 3

7 6 1 9 8 5 4 3 2

6 7 8 5 3 9 1 4 2

8 6 2 3 4 5 9 7 1

9 3 5 1 2 4 6 7 8

3 9 5 4 1 2 7 8 6

3 1 4 6 9 7 8 5 2

4 2 8 7 3 6 1 9 5

5 6 7 2 8 9 4 3 1

7 1 9 3 8 4 6 5 2

4 3 9 8 1 7 6 5 2

9 1 2 4 7 3 6 5 8

4 2 6 1 7 5 8 3 9

6 8 5 2 4 3 9 7 1

Thomas Snyder

8 3 4 5 1 6 9 7 2

5 8 3 9 2 6 4 1 7

7 1 2 9 6 5 4 8 3

3 4 5 7 6 2 1 8 9

2 6 4 5 1 8 7 9 3

3 5 1 6 8 2 7 4 9

74 2 9 8 1 3 5 7 4 6

76 3 7 5 4 9 2 1 8 6

78 8 9 6 3 7 4 2 1 5

1 7 6 9 4 8 3 2 5

8 9 1 6 3 7 2 4 5

2 4 7 5 9 1 3 6 8

7 5 1 8 9 4 2 6 3

1 3 8 2 6 9 5 7 4

9 7 4 1 3 8 5 2 6

6 2 9 3 5 7 8 1 4

9 4 2 7 5 1 3 6 8

1 2 3 4 5 6 8 9 7

4 8 3 6 2 1 5 9 7

6 5 7 8 4 3 9 2 1

5 6 8 7 2 9 1 3 4

7 2 1 4 9 6 3 8 5

7 5 1 2 3 8 9 6 4

7 9 5 3 6 8 4 2 1

6 4 3 8 5 1 7 9 2

8 2 6 4 7 9 1 3 5

1 8 4 7 9 2 3 5 6

9 5 8 7 3 2 1 4 6

3 4 9 6 5 1 8 2 7

3 2 6 5 1 4 7 9 8

2 9 6 5 8 7 4 3 1

4 8 2 5 9 7 6 1 3

8 5 3 9 7 1 2 6 4

79 3 8 4 1 6 9 5 2 7

81 5 9 3 1 4 6 2 7 8

83 9 7 1 4 2 6 5 8 3

1 7 5 3 2 4 9 6 8

6 1 7 8 2 3 5 4 9

6 4 2 8 3 5 1 7 9

8 3 2 9 1 5 6 7 4

9 7 5 3 6 2 4 8 1

2 1 9 6 5 3 8 4 7

4 1 9 6 7 8 2 5 3

2 3 8 9 1 4 7 5 6

4 3 7 2 8 9 6 1 5

5 6 7 2 4 3 8 1 9

1 6 4 7 8 5 3 9 2

5 6 8 1 4 7 9 3 2

1 2 6 7 9 5 3 8 4

2 5 7 9 6 8 3 1 4

1 3 5 4 8 7 9 2 6

7 3 4 1 2 8 6 9 5

1 9 3 4 7 5 8 2 6

2 4 6 5 1 9 3 8 7

The Art of Sudoku

5 8 9 3 4 6 2 7 1

4 6 8 1 3 2 5 7 9

9 8 7 2 3 6 4 1 5

8 1 7 4 6 2 5 3 9

7 3 9 6 5 1 2 4 8

6 7 4 3 2 5 8 9 1

80 4 5 2 9 3 1 8 6 7

82 6 2 1 7 8 4 9 5 3

84 8 1 9 6 7 4 5 3 2

9 6 3 8 5 7 4 1 2

2 7 8 6 1 4 9 5 3

3 4 1 5 8 9 7 2 6

6 9 5 2 7 3 1 4 8

8 4 5 3 2 9 7 6 1

9 7 2 8 1 6 4 3 5

5 1 4 2 9 3 6 8 7

3 8 6 5 4 7 1 9 2

3 5 2 1 9 8 6 7 4

4 9 8 7 6 1 2 5 3

5 2 1 9 4 3 7 6 8

7 6 3 8 5 2 1 4 9 137

8 7 3 1 6 9 4 2 5

1 4 9 6 8 3 2 7 5

7 8 6 5 2 9 3 4 1 138

6 2 1 5 4 7 9 8 3

8 2 5 4 1 7 9 3 6

9 1 5 3 8 4 6 2 7

4 9 5 2 3 8 1 7 6

7 3 6 5 9 2 8 1 4

4 3 2 1 7 6 9 8 5

9 5 2 6 1 3 8 4 7

4 9 7 2 3 1 6 5 8

1 5 7 9 4 8 2 6 3

85 1 6 7 8 9 4 3 5 2

87 6 1 3 8 4 5 7 9 2

89 6 9 3 7 1 2 4 5 8

3 8 4 7 5 2 6 1 9

2 5 8 9 7 6 3 4 1

8 2 4 6 5 3 1 7 9

5 3 8 4 7 6 2 9 1

5 8 1 3 2 9 4 6 7

2 4 1 8 3 5 7 9 6

7 4 9 3 2 1 5 6 8

9 7 2 1 6 4 5 8 3

3 6 8 2 9 7 5 1 4

2 1 6 9 8 5 7 3 4

3 6 4 7 5 8 1 2 9

5 7 9 4 6 1 8 3 2

9 8 3 4 6 7 1 2 5

1 7 5 2 9 6 3 8 4

5 6 8 4 1 2 9 3 7

4 2 6 1 5 9 7 3 8

4 2 6 3 8 1 9 5 7

4 7 1 3 8 9 6 2 5

Thomas Snyder

7 1 5 8 2 3 6 9 4

8 9 3 7 4 5 6 1 2

3 2 9 6 5 7 4 1 8

3 5 9 7 4 1 8 6 2

2 6 8 1 5 7 4 3 9

8 4 2 5 7 6 3 9 1

86 1 7 8 2 3 6 4 5 9

88 9 5 4 8 6 3 2 7 1

90 7 9 6 8 3 1 5 4 2

6 4 2 9 8 5 3 1 7

3 1 7 9 2 4 5 6 8

1 5 3 9 2 4 8 7 6

5 3 4 6 7 2 9 8 1

7 4 2 6 3 8 1 9 5

6 3 7 1 4 5 2 8 9

8 6 1 5 9 4 2 7 3

5 3 1 4 7 9 8 2 6

2 8 5 7 9 3 1 6 4

2 9 7 3 1 8 5 4 6

6 8 9 5 1 2 7 4 3

9 1 4 2 6 8 7 5 3

8 3 1 7 6 2 9 4 5

3 9 4 7 1 5 2 6 8

8 9 7 4 6 5 2 1 3

5 7 6 4 9 1 3 2 8

8 7 5 6 4 2 9 1 3

1 6 4 7 2 3 8 5 9

2 4 9 3 8 5 7 1 6

1 6 2 3 8 9 5 4 7

2 3 5 9 8 1 4 7 6

3 1 5 9 4 7 6 8 2

4 8 7 1 9 3 6 5 2

3 1 6 2 7 9 5 4 8

91 6 2 7 5 1 8 4 9 3

93 5 3 9 4 2 6 7 8 1

95 4 2 9 1 5 8 3 6 7

4 9 8 6 2 3 5 7 1

6 2 1 8 5 7 4 3 9

5 7 8 6 3 4 1 9 2

7 8 4 1 3 6 2 5 9

7 1 6 9 3 4 8 2 5

6 5 1 8 9 2 7 3 4

1 5 3 2 7 9 8 6 4

2 4 8 5 7 1 3 9 6

7 8 3 5 4 6 9 2 1

9 6 2 8 5 4 1 3 7

9 5 3 2 6 8 1 7 4

9 4 2 3 1 7 6 8 5

2 8 7 6 4 1 5 3 9

5 8 4 3 7 1 6 2 9

6 8 5 7 3 4 2 1 9

4 5 6 2 3 9 8 7 1

6 3 1 5 9 2 7 4 8

4 2 1 5 8 9 6 7 3

The Art of Sudoku

1 3 9 7 8 5 6 4 2

9 7 2 8 4 6 5 1 3

7 3 9 6 1 2 8 5 4

7 2 4 5 1 6 9 8 3

3 4 5 6 1 9 2 8 7

9 4 3 1 6 5 7 8 2

92 5 1 8 3 9 2 7 6 4

94 7 6 8 2 3 4 1 9 5

96 1 5 8 9 2 7 3 4 6

6 9 3 8 7 4 1 2 5

8 6 2 1 5 3 4 9 7

9 7 1 4 2 8 3 5 6

3 4 5 9 6 7 2 1 8

2 1 9 7 5 8 3 6 4

8 9 7 1 6 5 4 3 2

1 2 3 4 8 7 9 5 6

4 5 6 9 2 3 8 7 1

2 6 7 8 4 3 1 9 5

3 7 4 2 5 1 9 6 8

8 9 2 4 7 6 5 3 1

5 1 6 3 9 8 4 2 7 139

9 8 4 7 2 3 6 1 5

1 8 7 2 9 5 6 4 3

6 9 3 4 5 8 7 1 2 140

1 6 5 8 4 9 3 2 7

6 2 4 8 3 1 9 7 5

1 4 7 3 2 6 9 5 8

2 3 7 1 5 6 4 8 9

9 5 3 7 6 4 2 1 8

2 5 8 9 7 1 3 4 6

3 1 9 5 6 4 8 7 2

3 6 2 4 8 7 5 9 1

97 7 5 6 2 3 8 9 4 1

99 7 4 9 1 5 3 8 6 2

4 2 8 9 7 1 5 3 6

8 1 5 9 2 6 4 3 7

101

3 6 4 2 8 9 5 7 1

8 1 5 6 4 7 2 3 9

9 7 2 1 3 5 6 8 4

5 9 2 4 8 7 1 6 3

5 3 8 6 1 9 7 2 4

4 2 6 7 1 3 8 9 5

6 4 1 3 9 2 7 5 8

4 9 1 5 7 2 3 8 6

5 3 9 8 6 4 1 2 7

8 7 3 6 1 5 2 9 4

2 7 6 3 4 8 1 5 9

7 8 1 5 9 2 4 6 3

1 3 8 5 7 9 2 4 6

9 3 6 7 4 5 1 2 8

4 6 7 8 5 1 2 9 3

2 9 5 6 3 4 8 1 7

4 5 2 3 1 8 9 7 6

1 5 2 3 9 6 4 8 7

Thomas Snyder

7 4 6 1 8 2 5 9 3

1 8 7 9 2 6 5 4 3

8 3 9 2 4 7 6 5 1

3 5 7 4 6 1 9 2 8

98 4 8 2 7 9 5 3 6 1

9 6 1 8 2 3 7 5 4

100

6 1 4 8 5 2 3 9 7

2 7 3 6 9 1 8 5 4

5 9 8 4 3 7 2 6 1

102

3 4 6 7 8 5 1 2 9

2 9 8 1 6 3 7 4 5

7 1 5 4 2 9 3 6 8

5 7 4 9 1 8 6 3 2

3 6 1 5 7 9 4 8 2

9 2 1 5 3 4 8 7 6

6 1 3 2 5 7 4 8 9

7 4 9 2 8 3 6 1 5

5 7 4 6 1 8 9 3 2

8 2 9 3 4 6 1 7 5

8 2 5 1 6 4 7 3 9

6 8 3 9 7 2 5 1 4

8 4 2 9 6 5 1 3 7

9 5 7 8 3 1 4 2 6

6 9 3 8 2 1 7 4 5

1 9 7 3 4 8 6 5 2

3 6 4 7 2 5 9 1 8

8 1 5 4 7 9 3 2 6

6 5 3 2 7 1 8 4 9

8 1 2 9 6 4 7 3 5

4 7 2 3 5 6 8 1 9

103

2 7 8 5 3 4 9 1 6

4 6 5 1 8 9 7 2 3

3 1 9 7 2 6 4 8 5

105

6 2 9 4 8 7 1 5 3

1 3 8 6 5 9 2 7 4

7 4 5 3 1 2 6 8 9

107

5 2 6 7 9 8 1 3 4

1 8 9 5 4 3 2 6 7

3 4 7 1 6 2 9 5 8

7 2 6 4 1 3 5 9 8

4 8 3 2 7 6 5 9 1

2 6 1 9 8 4 5 7 3

9 3 4 8 5 7 2 6 1

2 9 1 5 4 3 8 6 7

9 5 4 2 3 7 6 8 1

5 8 1 6 9 2 3 7 4

5 7 6 1 9 8 3 4 2

7 3 8 6 1 5 4 9 2

4 8 5 7 6 3 2 1 9

4 8 7 9 3 2 1 6 5

7 9 1 6 3 5 2 8 4

6 7 9 4 2 1 5 3 8

9 1 6 4 5 8 2 7 3

8 5 2 4 1 7 6 9 3

The Art of Sudoku

3 2 1 9 5 8 7 4 6

3 2 5 1 6 7 9 4 8

4 6 3 9 8 2 7 1 5

104

2 3 7 1 4 6 8 9 5

9 4 8 5 7 2 1 6 3

1 5 6 3 8 9 4 2 7

106

2 6 8 7 4 1 5 3 9

7 5 3 8 9 6 4 1 2

1 9 4 5 2 3 7 8 6

108

3 4 7 5 9 1 8 2 6

5 2 6 8 7 4 1 3 9

9 1 8 3 2 6 5 4 7

5 6 4 2 9 7 3 8 1

8 1 2 6 3 5 9 7 4

7 9 3 8 1 4 6 5 2

8 4 2 3 1 5 6 9 7

6 3 1 2 7 9 8 5 4

5 7 9 6 8 4 3 2 1

1 7 9 2 5 3 4 6 8

2 3 4 7 6 8 9 5 1

6 8 5 1 4 9 3 7 2 141

7 4 2 6 3 9 5 8 1

6 4 9 8 1 5 7 3 2

8 7 9 6 3 5 1 4 2 142

9 3 5 1 7 8 2 4 6

2 3 5 9 4 7 6 1 8

4 1 5 8 7 2 6 9 3

8 1 6 2 5 4 7 9 3

1 7 8 6 3 2 4 5 9

6 3 2 9 4 1 8 7 5

109

4 8 3 9 6 7 1 2 5

2 5 9 8 1 3 6 7 4

111

7 1 4 2 5 6 8 9 3

8 5 6 3 9 1 2 4 7

6 7 1 4 2 5 9 3 8

9 2 3 4 7 8 5 6 1

113

1 8 7 3 5 4 2 6 9

2 9 4 7 8 6 3 5 1

3 5 6 2 1 9 4 8 7

3 2 4 5 9 1 8 6 7

5 9 2 7 6 3 1 8 4

5 2 1 4 6 7 9 3 8

5 6 7 3 8 2 4 1 9

4 6 7 1 8 9 3 2 5

7 4 8 1 9 3 5 2 6

1 9 8 7 4 6 3 5 2

3 8 1 5 2 4 9 7 6

9 6 3 5 2 8 7 1 4

4 6 3 8 7 2 9 1 5

4 6 9 7 2 3 1 5 8

8 9 1 6 2 4 7 3 5

2 1 5 9 4 6 8 3 7

1 3 2 8 6 5 7 4 9

6 3 2 7 9 5 1 4 8

Thomas Snyder

9 8 7 5 1 3 4 6 2

5 8 7 4 9 1 3 6 2

5 4 7 8 1 3 9 6 2

110

1 3 9 7 8 5 2 4 6

8 7 2 1 6 4 5 9 3

6 5 4 3 2 9 1 7 8

112

9 4 8 3 1 7 5 2 6

7 2 1 9 5 6 8 3 4

3 5 6 2 4 8 9 7 1

114

9 5 3 4 7 2 8 1 6

4 1 6 5 3 8 2 7 9

7 2 8 1 6 9 4 5 3

3 9 6 4 5 8 7 2 1

6 9 3 1 7 2 4 8 5

2 6 9 3 4 7 5 8 1

7 4 8 2 3 1 6 5 9

2 7 4 5 8 9 6 1 3

1 8 4 2 5 6 3 9 7

5 2 1 6 9 7 3 8 4

8 1 5 6 3 4 2 9 7

3 7 5 9 8 1 6 2 4

3 2 4 1 9 8 7 6 5

2 8 3 9 5 7 1 6 4

7 5 6 9 8 4 3 2 1

5 9 7 3 6 2 8 1 4

6 1 9 8 2 4 5 3 7

4 9 2 1 3 5 8 6 7

8 1 6 4 5 7 3 2 9

4 7 5 1 6 3 8 2 9

8 3 1 2 7 6 9 4 5

115

1 3 8 2 7 4 5 9 6

6 4 2 9 8 5 1 7 3

7 5 9 6 3 1 2 4 8

117

9 2 6 4 8 5 3 7 1

1 3 8 2 7 9 6 4 5

5 4 7 6 3 1 2 9 8

119

1 4 9 3 5 8 6 7 2

3 8 5 6 2 7 1 9 4

2 6 7 4 1 9 5 3 8

2 6 1 8 4 3 9 5 7

7 9 2 3 1 8 4 5 6

5 7 3 8 6 2 4 1 9

9 8 5 7 1 6 4 3 2

3 5 1 7 4 6 9 8 2

9 1 8 7 4 3 2 5 6

4 7 3 5 2 9 6 8 1

8 6 4 5 9 2 7 1 3

6 2 4 5 9 1 7 8 3

8 5 9 7 6 4 2 1 3

7 2 5 6 4 9 8 1 3

1 8 4 7 5 3 2 6 9

7 2 4 3 9 1 6 8 5

9 3 8 5 7 1 2 4 6

7 9 2 6 1 4 8 3 5

The Art of Sudoku

6 3 1 8 2 5 7 9 4

4 6 1 8 2 3 7 9 5

6 3 5 2 8 9 4 7 1

116

2 4 5 9 3 8 1 6 7

9 8 3 6 1 7 5 4 2

1 7 6 4 5 2 9 3 8

118

2 5 4 3 9 8 6 7 1

1 7 3 2 6 5 9 8 4

8 9 6 7 1 4 3 5 2

120

8 4 7 1 3 5 9 2 6

5 2 1 8 9 6 7 4 3

3 6 9 4 7 2 5 1 8

5 6 7 1 4 3 8 2 9

3 9 8 2 7 6 4 5 1

4 1 2 5 8 9 3 7 6

5 4 2 9 3 7 1 6 8

6 1 9 4 8 2 5 3 7

3 8 7 1 5 6 4 2 9

4 7 3 9 6 8 1 5 2

2 5 8 3 4 1 6 9 7

9 1 6 5 2 7 3 8 4 143

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