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Log in| Search found 9 matches |
| Author | Message |
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 Topic: 9 X 9 |
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| smith55js Replies: 12 Views: 57315 |
 Forum: General discussion Posted: Sat Dec 10, 2005 10:50 am Subject: total possible sudoku grids |
| I ran across an interesting mathematical proof. It does require a bit of advanced understanding of math to follow along, but the number reached is quite large. http://www.shef.ac.uk/~pm1afj/sudoku/s ... |
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| Topic: Sudoku Solving Techniques |
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| smith55js Replies: 1 Views: 23890 |
Forum: General discussion Posted: Fri Dec 02, 2005 1:16 am Subject: Sudoku Solving Techniques |
| Just trying to get a good list of techniques people use in solving these puzzles. I'm looking for distinct, logical steps one can take. For this I'll use the terms block, row, column, and group (3x3 ... |
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| Topic: Link back to main site |
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| smith55js Replies: 5 Views: 34517 |
Forum: General discussion Posted: Fri Dec 02, 2005 1:06 am Subject: use of the 'back' button |
| A back button in a browser typically is only useful if one hasn't submitted any information to any 'forms'. Once this is done, the back button will want to know if you want to submit the information ... | |
| Topic: December 2nd - Hard |
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| smith55js Replies: 4 Views: 27062 |
Forum: Daily Sudoku puzzles Posted: Fri Dec 02, 2005 1:01 am Subject: My solution... |
| 1.1g8 2.2i3 3.7g5 4.7i2 5.7c1 6.7e3 7.7d8 8.2b1 9.8i7 10.9g2 4 in row 2 must be in box 1 eliminating 4's from rest of row 2 11.4f3 12.3g9 4 in column 8 must be in box 9 eliminating 4's from rest of co ... |
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| Topic: Dec 1, 2005 - Very Hard |
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| smith55js Replies: 6 Views: 35846 |
Forum: Daily Sudoku puzzles Posted: Thu Dec 01, 2005 10:24 pm Subject: change in algorithm needed |
| Ok, so the difficulty is graded by a computer algorithm. It's apparent now that a change should be made. After doing different puzzles, some that are 'Very Hard' are in fact, Medium or Hard. Some ' ... | |
| Topic: Dec 1, 2005 - Very Hard |
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| smith55js Replies: 6 Views: 35846 |
Forum: Daily Sudoku puzzles Posted: Thu Dec 01, 2005 9:11 pm Subject: Dec 1, 2005 - Very Hard |
| No, I really don't feel this one should have been labeled "Very Hard". It might be Hard, or maybe even Medium. There were only four moves that required any actual thought processes aside from lookin ... | |
| Topic: Dec 1, 2005 - Very Hard |
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| smith55js Replies: 6 Views: 35846 |
Forum: Daily Sudoku puzzles Posted: Thu Dec 01, 2005 2:00 am Subject: Dec 1, 2005 - Very Hard |
| 1.5i2 2.6d3 3.6b6 4.6f4 5.6h9 6.7g6 7.8i1 8.8f5 9.8c9 10.1g1 11.4h4 12.4g3 13.2f1 14.2h2 15.4b9 16.1b2 {3,9} in b1,a3 17.1a9 {3,9} in b8,c7 18.1e8 19.9d9 20.5g9 21.3f9 22.4f6 23.4 ... |
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| Topic: Nov 29, 2005 - Hard |
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| smith55js Replies: 19 Views: 69613 |
Forum: Daily Sudoku puzzles Posted: Wed Nov 30, 2005 10:28 pm Subject: Nov 29, 2005 - Hard |
| I got step 10 but do not understand step 11..... step 6 removed a 4 from possibilities for r2c9 step 9 removed a 2 from possibilities for r2c9 step 10 removed a 1 from possiblities for r2c9 leaving ... |
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| Topic: Nov 29, 2005 - Hard |
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| smith55js Replies: 19 Views: 69613 |
Forum: Daily Sudoku puzzles Posted: Tue Nov 29, 2005 2:55 am Subject: Nov 29, 2005 - Hard |
| For anyone who needs help, here' s the solution and how I got it.... 1.5i5 2.8e4 3.8b8 4.9d4 5.5f8 - R1C4, R1C6,R4C4,R4C6 force {7,9} to be in r7c5,r9c5, eliminating 1,2,5 from possiblities 6.4i1 - ... |
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