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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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 Posted: Tue Sep 09, 2014 9:57 pm Post subject: Sep 10 VH |
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| Code: |
+-------------+-----------+--------------+
| 4 9 3 | 2 6 1 | 5 7 8 |
| 7 8 #26 | 9 5 4 | 236 236 1 |
| 56 *25 1 | 8 7 3 | 2469 26 469 |
+-------------+-----------+--------------+
| 2 7 4 | 1 39 5 | 369 8 369 |
| 35 6 59 | 7 8 2 | 349 1 349 |
| 38 1 89 | 34 349 6 | 7 5 2 |
+-------------+-----------+--------------+
| 368 234 268 | 5 34 9 | 1 236 7 |
| 1 34-5 *56 | 346 2 7 | 8 9 356 |
| 9 23-5 7 | 36 1 8 | 236 4 356 |
+-------------+-----------+--------------+
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XY-Wing 26-5 pivoted in r2c3; r89c2<>5; stte. |
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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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| Posted: Wed Sep 10, 2014 9:48 am Post subject: Sep 10 VH |
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After basics:
| Code: |
+------------+-----------+-------------+
| 4 9 3 | 2 6 1 | 5 7 8 |
| 7 8 26 | 9 5 4 | 236 236 1 |
| 56 25 1 | 8 7 3 | 49 26 49 |
+------------+-----------+-------------+
| 2 7 4 | 1 39 5 | 369 8 369 |
| 35 6 59 | 7 8 2 | 349 1 349 |
| 38 1 89 | 34 349 6 | 7 5 2 |
+------------+-----------+-------------+
| 68 234 268 | 5 34 9 | 1 236 7 |
| 1 345 56 | 346 2 7 | 8 9 356 |
| 9 235 7 | 36 1 8 | 236 4 356 |
+------------+-----------+-------------+
|
Play this puzzle online at the Daily Sudoku site
Also a 56 w-wing in c13 makes r7c1=8 which (in the end!) sets the puzzle. |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Wed Sep 10, 2014 11:41 pm Post subject: |
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| I had hughwill's starting position after the basics at which point I found the (almost) standard advanced move UR (type 2) of 49's in r35c79 which eliminates the 3 from r5c1 and solves it. |
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norwag
Joined: 11 Jan 2011
Posts: 6
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| Posted: Sat Sep 27, 2014 9:51 pm Post subject: Re: Sep 10 VH |
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| hughwill wrote: | After basics:
| Code: |
+------------+-----------+-------------+
| 4 9 3 | 2 6 1 | 5 7 8 |
| 7 8 26 | 9 5 4 | 236 236 1 |
| 56 25 1 | 8 7 3 | 49 26 49 |
+------------+-----------+-------------+
| 2 7 4 | 1 39 5 | 369 8 369 |
| 35 6 59 | 7 8 2 | 349 1 349 |
| 38 1 89 | 34 349 6 | 7 5 2 |
+------------+-----------+-------------+
| 68 234 268 | 5 34 9 | 1 236 7 |
| 1 345 56 | 346 2 7 | 8 9 356 |
| 9 235 7 | 36 1 8 | 236 4 356 |
+------------+-----------+-------------+
|
Play this puzzle online at the Daily Sudoku site
Also a 56 w-wing in c13 makes r7c1=8 which (in the end!) sets the puzzle. |
Please say this another way! I get to this point. I don't know what c13 refers to. Nor do I understand r7c1 which to me looks like it is already 1. Rows go down, columns across?? Help... |
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norwag
Joined: 11 Jan 2011
Posts: 6
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| Posted: Sat Sep 27, 2014 9:55 pm Post subject: Re: Sep 10 VH |
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| norwag wrote: | | hughwill wrote: | After basics:
| Code: |
+------------+-----------+-------------+
| 4 9 3 | 2 6 1 | 5 7 8 |
| 7 8 26 | 9 5 4 | 236 236 1 |
| 56 25 1 | 8 7 3 | 49 26 49 |
+------------+-----------+-------------+
| 2 7 4 | 1 39 5 | 369 8 369 |
| 35 6 59 | 7 8 2 | 349 1 349 |
| 38 1 89 | 34 349 6 | 7 5 2 |
+------------+-----------+-------------+
| 68 234 268 | 5 34 9 | 1 236 7 |
| 1 345 56 | 346 2 7 | 8 9 356 |
| 9 235 7 | 36 1 8 | 236 4 356 |
+------------+-----------+-------------+
|
Play this puzzle online at the Daily Sudoku site
Also a 56 w-wing in c13 makes r7c1=8 which (in the end!) sets the puzzle. |
Please say this another way! I get to this point. I don't know what c13 refers to. Nor do I understand r7c1 which to me looks like it is already 1. Rows go down, columns across?? Help... |
OK wait. r7c1 is actually sitting at 68. So how do you know it must be 8? Something to do with the 56 w-wing? And c13 is that the 56 in r3c1? |
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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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| Posted: Tue Oct 14, 2014 11:02 am Post subject: Re: Sep 10 VH |
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| norwag wrote: | | norwag wrote: | | hughwill wrote: | After basics:
| Code: |
+------------+-----------+-------------+
| 4 9 3 | 2 6 1 | 5 7 8 |
| 7 8 26 | 9 5 4 | 236 236 1 |
| 56 25 1 | 8 7 3 | 49 26 49 |
+------------+-----------+-------------+
| 2 7 4 | 1 39 5 | 369 8 369 |
| 35 6 59 | 7 8 2 | 349 1 349 |
| 38 1 89 | 34 349 6 | 7 5 2 |
+------------+-----------+-------------+
| 68 234 268 | 5 34 9 | 1 236 7 |
| 1 345 56 | 346 2 7 | 8 9 356 |
| 9 235 7 | 36 1 8 | 236 4 356 |
+------------+-----------+-------------+
|
Play this puzzle online at the Daily Sudoku site
Also a 56 w-wing in c13 makes r7c1=8 which (in the end!) sets the puzzle. |
Please say this another way! I get to this point. I don't know what c13 refers to. Nor do I understand r7c1 which to me looks like it is already 1. Rows go down, columns across?? Help... |
OK wait. r7c1 is actually sitting at 68. So how do you know it must be 8? Something to do with the 56 w-wing? And c13 is that the 56 in r3c1? |
Sorry I didn't see this for so long. The two 56s in the W wing are in columns 1 and 3
(c13). On row 5 there are only two 5s at c1 and c3. If r3c1=5 then r5c1<>5.
That means r5c3 is 5 and r8c3=6. The only other possibility for r3c1 is
that it equals 6. So either possibility means that r7c1<>6 so must =8. |
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