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dldcamp
Joined: 29 May 2007
Posts: 15
Location: Florida
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 Posted: Tue May 29, 2007 3:12 pm Post subject: May 19, 2007 Classic |
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| I am stuck. The hint took me to bottom right square putting a 1 in first column, middle row. Why? I can't figure out the logic. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue May 29, 2007 3:49 pm Post subject: |
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Hi, welcome to the forum. I can't speak for others, but I don't think I could start to see if I could help without knowing how far you had gotten.
There are two good ways to post a properly aligned grid.
If you are doing a puzzle (regardless of puzzle source) online on this site, all you have to do is click the "Ascii" button to the right of the grid. Then follow the instructions in the pop-up window to copy and paste the grid into the message box.
Otherwise, type the grid into Notepad, which uses a fixed xx font, or into a word processing program, and choose a font that uses a fixed xx, such as Courier New. Proofread the grid before posting. Select (highlight) the grid and copy it (Ctrl+C). In the forum message box, click "Code", then paste (Ctrl+V) the grid to the right of the Code tag. Click "Code" again which inserts the tag at the end of the grid.
A properly aligned grid makes it easier for people to analyze your position and may well get you a quicker response.
This is an example of a grid which was first typed into Notepad. It takes less time than it looks like, as once you establish the maximum number of spaces per cell, you get into a rhythm and it takes less than five minutes.
| Code: | -------------------------------------------------------------------
|23569 2369 1 |259 8 7 |2356 356 4 |
|23569 23689 2359 |1 24 49 |235678 35678 2358 |
|4 28 7 |25 3 6 |9 1 258 |
-------------------------------------------------------------------
|1239 4 239 |289 126 5 |368 3689 7 |
|123579 123579 6 |289 12 39 |4 3589 13589 |
|8 139 359 |7 146 349 |356 2 1359 |
-------------------------------------------------------------------
|27 5 8 |3 9 1 |27 4 6 |
|139 139 4 |6 7 2 |358 3589 3589 |
|23679 23679 239 |4 5 8 |1 379 239 |
------------------------------------------------------------------- |
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dldcamp
Joined: 29 May 2007
Posts: 15
Location: Florida
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| Posted: Tue May 29, 2007 4:25 pm Post subject: thanks |
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| Yes, I am new to the forum. I will try your way of posting the puzzle and see what happens. |
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dldcamp
Joined: 29 May 2007
Posts: 15
Location: Florida
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| Posted: Tue May 29, 2007 4:40 pm Post subject: here it is |
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The next hint is a 1 in column 7 and row 8. This is where I am stuck. I don't know the logic in eliminating the 9. I neatened up the rows does that help? Or did I screw it up more?
| Code: |
+--------------+--------------+-----------------+
| 7 8 6 | 4 3 12 | 12 9 5 |
| 39 2 39 | 5 1679 8 | 136 1367 4 |
| 4 1 5 | 27 2679 269 | 8 2367 237 |
+--------------+--------------+-----------------+
| 359 379 1 | 8 25 4 | 239 237 6 |
| 569 679 2 | 3 156 16 | 4 8 179 |
| 8 36 4 | 9 126 7 | 5 123 123 |
+--------------+--------------+-----------------+
| 1369 369 8 | 12 4 129 | 7 5 1239 |
| 2 5 79 | 6 179 3 | 19 4 8 |
| 1369 4 379 | 127 8 5 | 12369 1236 1239 |
+--------------+--------------+-----------------+
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Play this puzzle online at the Daily Sudoku site |
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dldcamp
Joined: 29 May 2007
Posts: 15
Location: Florida
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| Posted: Tue May 29, 2007 4:45 pm Post subject: second try at your suggestions... |
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| Code: |
+--------------+--------------+-----------------+
| 7 8 6 | 4 3 12 | 12 9 5 |
| 39 2 39 | 5 1679 8 | 136 1367 4 |
| 4 1 5 | 27 2679 269 | 8 2367 237 |
+--------------+--------------+-----------------+
| 359 379 1 | 8 25 4 | 239 237 6 |
| 569 679 2 | 3 156 16 | 4 8 179 |
| 8 36 4 | 9 126 7 | 5 123 123 |
+--------------+--------------+-----------------+
| 1369 369 8 | 12 4 129 | 7 5 1239 |
| 2 5 79 | 6 179 3 | 19 4 8 |
| 1369 4 379 | 127 8 5 | 12369 1236 1239 |
+--------------+--------------+-----------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue May 29, 2007 4:48 pm Post subject: |
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| I see you figured it out on the second try. I can't help because I have to leave the house, but someone else will surely be along with an answer. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed May 30, 2007 12:06 am Post subject: Re: second try at your suggestions... |
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| dldcamp wrote: | | Code: |
+--------------+--------------+-----------------+
| 7 8 6 | 4 3 12 | 12 9 5 |
| 39 2 39 | 5 1679 8 | 136 1367 4 |
| 4 1 5 | 27 2679 269 | 8 2367 237 |
+--------------+--------------+-----------------+
| 359 379 1 | 8 25 4 | 239 237 6 |
| 569 679 2 | 3 156 16 | 4 8 179 |
| 8 36 4 | 9 126 7 | 5 123 123 |
+--------------+--------------+-----------------+
| 1369 369 8 | 12 4 129 | 7 5 1239 |
| 2 5 79 | 6 179 3 | 19 4 8 |
| 1369 4 379 | 127 8 5 | 12369 1236 1239 |
+--------------+--------------+-----------------+
|
Play this puzzle online at the Daily Sudoku site |
You missed some "locked candidates."
In row 7, the 6s are restricted to box 7, so get rid of the 6 in r9c1.
In box 5, the 2s are restricted to col 5, so get rid of the 2 in box 2 in col 5.
In col 4, the 1s are restricted to box 8, so delete the other 1s in that box. This is key because you now have a 79 pair in row 8 which can get you started solving some cells.
Also in row 2 there are a few eliminations which can be made because of the 39 pair.
Good luck, not sure how far this stuff will take you. |
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dldcamp
Joined: 29 May 2007
Posts: 15
Location: Florida
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| Posted: Wed May 30, 2007 12:34 pm Post subject: Thanks! |
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The restricted 1s in box 5 was what did it for me. Thank you so much. I think I was staring at it soooooo long that I missed it. I'll see how far I get now. thanks so much.
What I found that I don't like with the Sweep mode is that the computer does not eliminate the candidates that should be eliminated like with the pairs of 39 in row 2.
Again, thanks Marty |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed May 30, 2007 3:58 pm Post subject: |
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| Quote: | | What I found that I don't like with the Sweep mode is that the computer does not eliminate the candidates that should be eliminated |
Yes, you just have to study the grid closely and yourself eliminate the candidates that shopuldn't be there. |
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samgj
Site Admin
Joined: 17 Jul 2005
Posts: 106
Location: Cambridge
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| Posted: Thu May 31, 2007 8:46 am Post subject: Re: Thanks! |
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| dldcamp wrote: | | What I found that I don't like with the Sweep mode is that the computer does not eliminate the candidates that should be eliminated like with the pairs of 39 in row 2. |
That's intentional! If it removed candidates that can be eliminated by all types of logic then you'd have a solved puzzle. Surely you want to do this yourself 
Sam |
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dldcamp
Joined: 29 May 2007
Posts: 15
Location: Florida
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| Posted: Thu May 31, 2007 1:02 pm Post subject: thanks for the heads up |
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Thanks, Sam for the heads up. I thought I was doing something wrong and was going to stop doing the eliminations.
We love your site! and appreciate all the work you have done!
Deb and Pat  |
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