November 14, 2005
Problem of the Week

SUDOKU



Sudoku is the number placing game taking the world by storm. The rules of Sudoku are simple. Enter digits from 1 to 9 into the blank spaces. Every row must contain one of each digit. So must every column, and so must every 3x3 square. Each Sudoku has a unique solution that can be reached logically without guessing.




Solution to the Problem:

Originally called simply Number Place, the first puzzle was created by Howard Garns, a freelance puzzle constructor, in 1979.   The number of valid Sudoku solution grids for the standard 9x9 grid was calculated by Bertram Felgenhauer in 2005 to be 6,670,903,752,021,072,936,960.





Correctly solved by:

1. Anil Nataraj AND Sagar Patel Columbus, Georgia
2. Clay ----------
3. Mike Singer Winchester, Virginia
4. Jim Arrison Norristown, Pennsylvania
5. Walt Arrison Philadelphia, Pennsylvania
6. Bill Funk San Antonio, Texas
7. Magdalena Axelsson Tullängsskolan, Örebro, Sweden
8. David & Judy Dixon Bennettsville, South Carolina
9. Chelsea Cockburn Harrisonburg Virginia
10. Jeffrey Gaither University of Virginia
Charlottesville, Virginia
11. James P. Hus Highland, Indiana
12. Mom Mom ----------
13. Britney White Columbus, Georgia
14. Tobi Kuforiji Columbus, Georgia
15. Wictoria Widén Tullängsskolan, Örebro, Sweden
16. Carleton 'Buck' Jones Midwestern University - Glendale
Glendale, Arizona
17. James Alarie University of Michigan -- Flint
Flint, Michigan
18. Tristan Collins Virginia Tech
Blacksburg, Virginia
19. Danny Gordon Columbus, Georgia
20. mistry@optonline.net ----------
21. Erin Fennacy Fresno, California
22. Andrew Barnes Winchester, Virginia
23. Emily Powell Winchester, Virginia
24. Alex Ball Winchester, Virginia
25. Bobby Arthur Winchester, Virginia
26. Nate Troup Arlington, Virginia
27. Russell Beaty Columbus, Georgia
28. Nicholas Caligaris Columbus, Georgia
29. Mary Bailey Wickham Columbus, Georgia
30. Stephen O'Hara Winchester, Virginia
31. Andrew Montoya Winchester, Virginia
32. Kelley Kolar Winchester, Virginia
33. Ashley Faucher Winchester, Virginia
34. Kaetlyn Buono Chelmsford, Massachusetts
35. Richard Johnson La Jolla, California
36. Brittaney Jackson Harrisonburg, Virginia
37. Malin Fredriksson Tullängsskolan, Örebro, Sweden
38. Erika Skoglund Tullängen, Örebro, Sweden
39. Danielle Mendenhall ----------
40. Adam Haglund Tullängsskolan, Örebro, Sweden
41. Zaza Carlzon Tullängen, Örebro, Sweden
42. Carter Galbraith Columbus, Georgia
43. Rachel Pridgen Columbus, Georgia
44. Neal Amos Columbus, Georgia
45. Misty Carlisle Cornell University
Ithaca, New York
46. Maggie Morrison Winchester, Virginia
47. Lauren Ko Winchester, Virginia
48. Jessie Biggs Winchester, Virginia
49. Suzie Chhouk Long Beach, California
50. Allison Mastran Washington Township, New Jersey
51. Cameron Burkholder Virginia Tech
Blacksburg, Virginia
52. Simone Giovanetti ----------
53. Elizabeth Carlson Winchester, Virginia
54. Charles Washington Winchester, Virginia
55. Nicole Wells ----------
56. Evelyne Stalzer Montville, New Jersey
57. Praveen Nandamuru Columbus, Georgia
58. Olivia Quach Harrisonburg, Virginia
59. Marcus Russello Sewell, New Jersey
60. Lane Newton Harrisonburg, Virginia
61. Chris Jansson Tullängsskolan, Sweden
62. Sharon Serano Sewell, New Jersey
63. Patrick McDuffe Harrisonburg, Virginia
64. Javier Johnson ----------
65. Ben Bassett Sewell, New Jersey
66. Cyrus Peterpaul Winchester, Virginia



Send any comments or questions to: David Pleacher