welcome to drracket, version 6.1 [3m]. language: slideshow ...richter/11-7-2014.pdfnov 07, 2014 ·...
TRANSCRIPT
![Page 1: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/1.jpg)
Welcome to DrRacket, version 6.1 [3m].Language: slideshow; memory limit: 128 MB.
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![Page 2: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/2.jpg)
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![Page 3: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/3.jpg)
3 4 2 1
6 8 5 3
6 8 9 1 3
6 8 7
7 3 56 9 1 2
4 6 89
234 89
234 6 8
3456 8
34 6 8
56 8
3 5 9 8 3
56 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1234 9
23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
2345
23 5 7 2
4 6 8
2 4 8 9 1 3
6 8
2 56 8
23 89 1 3
6 9
2 4 789
234 789
234 78
4 6 8 5
6 89
5 89
567 9
56 9
1 4 789
1 4 789
45 78 2 1
4 6 89 3
23 5 89
23 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 1 in cell D1 of box 4
![Page 4: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/4.jpg)
3 4 2 1
6 8 5 3
6 8 9 1 3
6 8 7
7 3 56 9 1 2
4 6 89
234 89
234 6 8
3456 8
34 6 8
56 8
3 5 9 8 3
56 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
2345
23 5 7 2
4 6 8
2 4 8 9 1 3
6 8
2 56 8
23 89 1 3
6 9
2 4 789
234 789
234 78
4 6 8 5
6 89
5 89
567 9
56 9
1 4 789
1 4 789
45 78 2 1
4 6 89 3
23 5 89
23 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 4 in cell F1 of box 4
![Page 5: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/5.jpg)
3 4 2 1
6 8 5 3
6 8 9 1 3
6 8 7
7 3 56 9 1 2
4 6 89
234 89
234 6 8
3456 8
34 6 8
56 8
3 5 9 8 3
56 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
23 89 1 3
6 9
2 4 789
234 789
234 78
4 6 8 5
6 89
5 89
567 9
56 9
1 4 789
1 4 789
45 78 2 1
4 6 89 3
23 5 89
23 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 7 in cell H2 of box 7
![Page 6: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/6.jpg)
3 4 2 1
6 8 5 3
6 8 9 1 3
6 8 7
7 3 56 9 1 2
4 6 89
234 89
234 6 8
3456 8
34 6 8
56 8
3 5 9 8 3
56 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
23 89 1 3
6 9
2 4 789
234 789
234 78
4 6 8 5
6 89
5 89 7
56 9
1 4 89
1 4 89
45 8 2 1
4 6 89 3
23 5 89
23 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 6 in cell B2 of col 2
![Page 7: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/7.jpg)
3 4 2 1
6 8 5 3
6 8 9 1 3
6 8 7
7 6 1 2 4 89
234 89
234 8
345 8
34 8
5 8
3 5 9 8 3
5 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
23 89 1 3
6 9
2 4 789
234 789
234 78
4 6 8 5
6 89
5 89 7
56 9
1 4 89
1 4 89
45 8 2 1
4 6 89 3
23 5 89
23 5 9 4 12
89 6 23
5 8
8 7 1
89
Single 3 in cell A1
![Page 8: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/8.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
234 8
345 8
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3
6 9
2 4 789
234 789
234 78
4 6 8 5
6 89
5 89 7
56 9
1 4 89
1 4 89
45 8 2 1
4 6 89 3
2 5 89
23 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 3 in cell G3 of col 3
![Page 9: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/9.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
234 8
345 8
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 8 5
6 89
5 89 7
56 9
1 4 89
1 4 89
45 8 2 1
4 6 89 3
2 5 89
2 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 6 in cell H3 of box 7
![Page 10: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/10.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
234 8
345 8
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
34 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 8 5
6 89
5 89 7 6 1
4 89
1 4 89
45 8 2 1
4 89 3
2 5 89
2 5 9 4 12
89 6 23
5 8
8 7 1
89
Hidden Single 3 in cell J6 of box 8
![Page 11: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/11.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345 8
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
4 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 8 5
6 89
5 89 7 6 1
4 89
1 4 89
45 8 2 1
4 89 3
2 5 89
2 5 9 4 12
89 6 3
8 7 1
89
Hidden Single 5 in cell H6 of box 8
![Page 12: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/12.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345 8
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
4 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 78
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 8 5
6 89
89 7 6 1
4 89
1 4 89 5 2 1
4 89 3
2 5 89
2 5 9 4 12
89 6 3
8 7 1
89
Single 8 in cell J7
![Page 13: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/13.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
4 67
3456 2 1
56
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 9 3
2 5 9
2 5 9 4 12
9 6 3 8 7 1
9
Digit/Unit-Unit Pattern in cells {C1 C3} removes 5 fromcells {C7 C9}
![Page 14: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/14.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67 9
1 34 7 9
4 67
34 6 2 1
6
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 9 3
2 5 9
2 5 9 4 12
9 6 3 8 7 1
9
Digit/Unit-Unit Pattern in cells {C1 C3} removes 9 fromcells {C4 C5}
![Page 15: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/15.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67
1 34 7
4 67
34 6 2 1
6
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 9 3
2 5 9
2 5 9 4 12
9 6 3 8 7 1
9
Digit/Unit-Unit Pattern in cells {D2 E2 F2} removes 2 fromcells {J2}
![Page 16: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/16.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67
1 34 7
4 67
34 6 2 1
6
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
2 56 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 9 3
2 5 9
5 9 4 12
9 6 3 8 7 1
9
Hidden Pair (5 8) in cells {B9 F9} of col 9
![Page 17: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/17.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67
1 34 7
4 67
34 6 2 1
6
1 23 9 8 5 2
4 7
2 4 67
3 67
3 6 9
2 6 9
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
5 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 9 3
2 5 9
5 9 4 12
9 6 3 8 7 1
9
Hidden Single 2 in cell D9 of box 6
![Page 18: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/18.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67
1 34 7
4 67
34 6 2 1
6
1 3 9 8 5
4 7
4 67
3 67
3 6 9 2
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
5 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 9 3
2 5 9
5 9 4 12
9 6 3 8 7 1
9
Digit/Unit-Unit Pattern in cells {D8 E8} removes 9 fromcells {H8}
![Page 19: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/19.jpg)
3 4 2 1 6 8 5
6 8 9 1
6 8 7
7 6 1 2 4 89
234 89
2 4 8
345
34 8
5 8
5 9 8
5 9
1 4 67
1 34 7
4 67
34 6 2 1
6
1 3 9 8 5
4 7
4 67
3 67
3 6 9 2
6 2 5 9
5 9 3 2
78 1
5 7
89 4
4 23 5 7 2
6 8
2 8 9 1 3
6 8
5 8
2 89 1 3 2
4 789
2 4 789
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 89 5 2 1
4 3
2 5 9
5 9 4 12
9 6 3 8 7 1
9
done'((3 4 2 (1 6 8) 5 (6 8) 9 (1 6 8) 7) (7 6 1 (2 4 8 9) (2 3 4 8 9) (2 4 8) (3 4 5) (3 4 8) (5 8)) ((5 9) 8 (5 9) (1 4 6 7) (1 3 4 7) (4 6 7) (3 4 6) 2 (1 6)) (1 (3 9) 8 5 (4 7) (4 6 7) (3 6 7) (3 6 9) 2) (6 (2 5 9) (5 9) 3 (2 7 8) 1 (5 7) (8 9) 4) (4 (2 3 5) 7 (2 6 8) (2 8) 9 1 (3 6 8) (5 8)) ((2 8 9) 1 3 (2 4 7 8 9) (2 4 7 8 9) (2 4 7 8) (4 6) 5 (6 9)) ((8 9) 7 6 (1 4 8 9) (1 4 8 9) 5 2 (1 4) 3) ((2 5 9) (5 9) 4 (1 2 9) 6 3 8 7 (1 9)))
Bilocation Chain A4 -1- A8 + H8 -1- J9 removes 1 in cell J4
![Page 20: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/20.jpg)
3 4 2 1 8 5
6 8 9 1
6 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 67
34 2 1
6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 89 1 3 2
4 789
4 7 9
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 9 5 2 1
4 3
2 9 5 4 2
9 6 3 8 7 1
9
Hidden Single 1 in cell J9 of row 9
![Page 21: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/21.jpg)
3 4 2 1 8 5
6 8 9 1
6 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 67
34 2
6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 89 1 3 2
4 789
4 7 9
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 1 in cell A8 of box 3
![Page 22: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/22.jpg)
3 4 2 8 5
6 8 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 67
34 2
6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 89 1 3 2
4 789
4 7 9
2 4 78
4 6 5
6 9
89 7 6 1
4 89
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 6 in cell C9 of box 3
![Page 23: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/23.jpg)
3 4 2 8 5
6 8 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 89 1 3 2
4 789
4 7 9
2 4 78
4 6 5
9
89 7 6 1
4 89
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 6 in cell A6 of box 2
![Page 24: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/24.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 89 1 3 2
4 789
4 7 9
2 4 78
4 6 5
9
89 7 6 1
4 89
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 8 in cell A4 of box 2
![Page 25: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/25.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 89 1 3 2
4 7 9
4 7 9
2 4 78
4 6 5
9
89 7 6 1
4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 8 in cell G6 of box 8
![Page 26: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/26.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 9 1 3 2
4 7 9
4 7 9 8
4 6 5
9
89 7 6 1
4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 8 in cell H1 of box 7
![Page 27: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/27.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 9 1 3 2
4 7 9
4 7 9 8
4 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 6 in cell G7 of box 9
![Page 28: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/28.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3
3 6 9 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 6 in cell D8 of box 6
![Page 29: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/29.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6 2
6 2 9 5 3 2
8 1 7
89 4
4 23 7 6 2
8 9 1 3
8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 9 in cell E8 of box 6
![Page 30: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/30.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 3 9 8 5
4 7
4 7
3 6 2
6 2 5 3 2
8 1 7 9 4
4 23 7 6 2
8 9 1 3
8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 9 in cell D2 of box 4
![Page 31: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/31.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 9 8 5 4 7
4 7
3 6 2
6 2 5 3 2
8 1 7 9 4
4 23 7 6 2
8 9 1 3
8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 3 in cell F2 of box 4
![Page 32: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/32.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 9 8 5 4 7
4 7
3 6 2
6 2 5 3 2
8 1 7 9 4
4 3 7 6 2 8 9 1
8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 2 in cell E2 of box 4
![Page 33: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/33.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 9 8 5 4 7
4 7
3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 8 9 1
8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 2 in cell F5 of box 5
![Page 34: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/34.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 9 8 5 4 7
4 7
3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 8 in cell E5 of box 5
![Page 35: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/35.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
34 2 6
1 9 8 5 4 7
4 7
3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 3 in cell D7 of box 6
![Page 36: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/36.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
34 9
2 4 5 3
4 8
5 8 9 1 4 7
1 34 7
4 7
4 2 6
1 9 8 5 4 7
4 7 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 3 in cell B8 of box 3
![Page 37: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/37.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 4 5 3 8
5 8 9 1 4 7
1 34 7
4 7
4 2 6
1 9 8 5 4 7
4 7 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 3 in cell C5 of box 2
![Page 38: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/38.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 4 5 3 8
5 8 9 1 4 7 3
4 7
4 2 6
1 9 8 5 4 7
4 7 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 1 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 1 in cell C4 of box 2
![Page 39: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/39.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 4 5 3 8
5 8 9 1 3 4 7
4 2 6
1 9 8 5 4 7
4 7 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 7 in cell C6 of box 2
![Page 40: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/40.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 4 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 4 7
4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 4 in cell C7 of box 3
![Page 41: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/41.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 4 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 4 7
4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 7 9 8 6 5
9
8 7 6 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 7 in cell D5 of box 5
![Page 42: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/42.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 4 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 9 8 6 5
9
8 7 6 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 4 in cell D6 of box 5
![Page 43: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/43.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 9 1 3 2
4 7 9
4 9 8 6 5
9
8 7 6 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 8 in cell F8 of box 6
![Page 44: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/44.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5 2 9 1 3 2
4 7 9
4 9 8 6 5
9
8 7 6 4 9
1 4 9 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 1 in cell H5 of box 8
![Page 45: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/45.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5 2 9 1 3 2
4 7 9
4 9 8 6 5
9
8 7 6 4 9 1 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 7 in cell G4 of box 8
![Page 46: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/46.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 2 4 9
4 9
2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5 2 9 1 3 7
4 9 8 6 5
9
8 7 6 4 9 1 5 2
4 3
2 9 5 4 2
9 6 3 8 7 1
Hidden Single 2 in cell J4 of box 8
![Page 47: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/47.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9
4 9
2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5 2 9 1 3 7
4 9 8 6 5
9
8 7 6 4 9 1 5 2
4 3
9 5 4 2 6 3 8 7 1
Hidden Single 2 in cell B6 of box 2
![Page 48: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/48.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9
4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5 2 9 1 3 7
4 9 8 6 5
9
8 7 6 4 9 1 5 2
4 3
9 5 4 2 6 3 8 7 1
Hidden Single 2 in cell G1 of box 7
![Page 49: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/49.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9
4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 9 8 6 5
9
8 7 6 4 9 1 5 2
4 3
9 5 4 2 6 3 8 7 1
Hidden Single 9 in cell J1 of box 7
![Page 50: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/50.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9
4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 9 8 6 5
9
8 7 6 4 9 1 5 2
4 3
9 5 4 2 6 3 8 7 1
Hidden Single 4 in cell H8 of box 9
![Page 51: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/51.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9
4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 9 8 6 5
9
8 7 6 9 1 5 2 4 3
9 5 4 2 6 3 8 7 1
Hidden Single 4 in cell G5 of box 8
![Page 52: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/52.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9
9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 8 6 5 9
8 7 6 9 1 5 2 4 3
9 5 4 2 6 3 8 7 1
Hidden Single 4 in cell B4 of box 2
![Page 53: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/53.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 8 6 5 9
8 7 6 9 1 5 2 4 3
9 5 4 2 6 3 8 7 1
Hidden Single 9 in cell B5 of box 2
![Page 54: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/54.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 8 6 5 9
8 7 6 9 1 5 2 4 3
9 5 4 2 6 3 8 7 1
Hidden Single 9 in cell H4 of box 8
![Page 55: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/55.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 8 6 5 9
8 7 6 9 1 5 2 4 3
9 5 4 2 6 3 8 7 1
Hidden Single 9 in cell G9 of box 9
![Page 56: Welcome to DrRacket, version 6.1 [3m]. Language: slideshow ...richter/11-7-2014.pdfNov 07, 2014 · 123 456 789 4 2 123 456 789 5 123 456 789 9 123 456 789 7 7 123 456 789 1 456 789](https://reader036.vdocuments.mx/reader036/viewer/2022062605/5fd9df3a07c10b0ee2107e89/html5/thumbnails/56.jpg)
3 4 2 8 5 6 9 1 7
7 6 1 4 9 2 5 3 8
5 8 9 1 3 7 4 2 6
1 9 8 5 7 4 3 6 2
6 2 5 3 8 1 7 9 4
4 3 7 6 2 9 1 8 5
2 1 3 7 4 8 6 5 9
8 7 6 9 1 5 2 4 3
9 5 4 2 6 3 8 7 1
done'((3 4 2 8 5 6 9 1 7) (7 6 1 4 9 2 5 3 8) (5 8 9 1 3 7 4 2 6) (1 9 8 5 7 4 3 6 2) (6 2 5 3 8 1 7 9 4) (4 3 7 6 2 9 1 8 5) (2 1 3 7 4 8 6 5 9) (8 7 6 9 1 5 2 4 3) (9 5 4 2 6 3 8 7 1))
>