Sudoku #1
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
8
2
9
8
5 4
7 9 3
4
6
5
6
3
2
3 2 9
8 5
1
2
4
2
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
Sudoku #2
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
1
9 3
6
2
5
1
8
3 5
6 3
8 9
9 1
2
2
4
5
2
9 7
8
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Sudoku #3
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
7 5
2
9
2
3 5 1
8
5
9 3
2 7
4
6
8 1 4
3
3
4
5 2
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Sudoku #4
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
9
7
1
2
5
6
9
8
4
5
9
2
7
7
6
4
1
7
4
2
5
7
9
3
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Sudoku #5
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
8 6
9
2
1
5
7
5
6 8 4
4
6
2 7 9
4
6
6
3
1
7
8 2
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Sudoku #6
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
8
4 8
6
1 6 3
2
5 2
7
6
5
6
1 3
9
8 1 4
4
9 3
7
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Sudoku #7
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
2 9
1
4
2
6
8
7 6
3
4 6
2 7
9
2 5
6
1
5
8
9
7 2
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Sudoku #8
Challenging Sudoku Puzzles by KrazyDad, Book 7
KRAZYDAD.COM/PUZZLES
2 7
4
9
6 7 3
5
4 9
1 5
8 7
6 9
1
1 8 2
3
6
8 5
Fill in the blank squares so that each row, each column and each
3-by-3 block contain all of the digits 1 thru 9.
If you use logic you can solve the puzzle without guesswork.
Need a little help? The hints page shows a logical order to solve the puzzle.
Use it to identify the next square you should solve. Or use the answers page
if you really get stuck.
© 2008 KrazyDad.com
Hints
Challenging Sudoku Puzzles by KrazyDad, Book 7
Sudoku #1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Sudoku #8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Answers
Challenging Sudoku Puzzles by KrazyDad, Book 7
Sudoku #1
4 6 3 1
9 7
5
1 7 2 3 5
6 4
2 8
6
1
3 2
8 5
1 7 9
9 8 7 1 2 3 4
1 7 6
9 4
5 8
6
4
1 7
8 5
6 7 3 4 9
7
9 5
1 6 8 3
8
2
9
8
5
4
7
9
3
4
6
5
6
3
2
3
2
9
8
5
1
2
4
2
Sudoku #2
6
5 8 4 2
7
9 7 8 3 1
4 5
3 2 4
7 9
6 8
7
1 9 2
4 6
2
4 5 7
1
4 5
6 8 7
3
8 3
7 9
6 1 5
4 6
8 1 3 7 9
1
6 3 5 2
4
1
9
3
6
2
5
1
8
3
5
6
3
8
9
9
1
2
2
4
5
2
9
7
8
Sudoku #3
6 8
9 3 1 4
8 4 1 7 3 6 2
5
9
4 8 6 7
6 2
4 9 7
3 1
5 1
6
4 8
3 7
1 5 8
2 9
9 6 5 2
7
4
2 9 7 5 1 8 6
1 8 7 6
3 9
7
5
2
9
2
3
5
1
8
5
9
3
2
7
4
6
8
1
4
3
3
4
5
2
Sudoku #4
3
4 5
2
6 8
8
3 1
9 4 7
7 6 1
4
5 2 3
3 6 7
1 8
2
9 5
8 3 4
1 6
1
8 2
9 3 5
5 4 3
2
6 8 9
6 1 9
8 3
7
8 2
6
5 4
1
9
7
1
2
5
6
9
8
4
5
9
2
7
7
6
4
1
7
4
2
5
7
9
3
Sudoku #5
7 5 4 2 3
1
4 3
9
8
7 6
9 5 1
6 3 4 2 8
2 9
7 1 3
7
8 3 5 1 2
9
6 1 3
8 5
1 8 5 4 2
9 3 7
2 9
8
7
4 5
3
4 1 9 5 6
8
6
9
2
1
5
7
5
6
8
4
4
6
2
7
9
4
6
6
3
1
7
8
2
Sudoku #6
4
9 2 1 6 5 3 7
3 5 2
7 9
1
7
5 9 4 8
3 8
1 6 9 4
7 1 9 3 4 8 2
8 9 4 5
2 7
3 5 7 2
6
1
7 6
2 5 8
2 6 8 1 4 5 3
9
8
4
8
6
1
6
3
2
5
2
7
6
5
6
1
3
9
8
1
4
4
9
3
7
Sudoku #7
3
6 1 5 4 8 7
7
8
3 9 6 5
4
5 7
2 1 3 9
1 5 2 8
9 4
8
3 9 1
5
3 7
4 8 6 1
2 8 3 9
7 5
4
7 4 1 2
3
6
6 9 1 5 4 3
8
2
9
1
4
2
6
8
7
6
3
4
6
2
7
9
2
5
6
1
5
8
9
7
2
Sudoku #8
9 4
5 3 6 1 8
1 5 8 6
2 7 3
1 8 9 2 5 4
8 3 7
2 6
1
2
3 9 4
6
4
8 7
3 2 5
5 9 6 4 3 7
8 1 2
5 9 4 7
7 2 4 9 1
6 3
2
7
4
9
6
7
3
5
4
9
1
5
8
7
6
9
1
1
8
2
3
6
8
5