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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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 Posted: Sun Apr 24, 2011 11:15 pm Post subject: April 25 VH |
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| W-Wing 67(with two strong links). With SL 7 in row 5 removes the 6's in BOX 1 row 3 and with strong link 6 in col 7 removes the 7's in BOX 1 row 3 and r1c6 which solves it. |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Mon Apr 25, 2011 12:16 am Post subject: |
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| Yet another "solves the puzzle" target for these w-wing 67s are the 6s in row 2 |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Apr 25, 2011 1:25 am Post subject: |
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George's W-Wing with the strong link on 6 in row 2 takes out the 7s from r3c23.
Or a Finned X-Wing in rows 35 takes out the 7s from r12c2.
The Type 4 UR (also a Type 2, but useless) takes out the 4s from r4c89.
Interestingly, I didn't notice a solution that uses the moves that are required for these puzzles, i.e., X-, XY- and XYZ-Wing, although I didn't look thoroughly. |
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LloydB
Joined: 09 Jul 2007
Posts: 21
Location: Skagit Co., WA USA
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| Posted: Mon Apr 25, 2011 3:09 pm Post subject: |
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This may be the "official" solution
XYZ 267 centered in r3c3 followed by a 467 XY wing centered in r3c7 followed by an X wing on 7 did it for me.
Don't know if all those steps are required. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Apr 25, 2011 3:36 pm Post subject: |
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| Lloyd, where was the X-Wing? |
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LloydB
Joined: 09 Jul 2007
Posts: 21
Location: Skagit Co., WA USA
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| Posted: Mon Apr 25, 2011 3:41 pm Post subject: |
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| I believe the X wing was in rows 3 and 5 |
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eddieg
Joined: 12 Jan 2006
Posts: 47
Location: San Diego, CA USA
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| Posted: Mon Apr 25, 2011 4:24 pm Post subject: |
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| Another fun puzzle. Thanks all. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Apr 25, 2011 5:09 pm Post subject: |
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| LloydB wrote: | | I believe the X wing was in rows 3 and 5 |
Rows 35 are where my Finned X-Wing was, but for the X-Wing, I haven't found a way to get rid of the 7 from r3c3.
| Code: |
+------------+-------------+-------------+
| 5 67 8 | 1 4 27 | 69 279 3 |
| 1 3467 367 | 259 679 257 | 8 247 47 |
| 9 2467 267 | 3 67 8 | 46 1 5 |
+------------+-------------+-------------+
| 6 1 357 | 259 8 245 | 349 479 479 |
| 8 79 4 | 6 79 3 | 2 5 1 |
| 2 379 357 | 59 1 457 | 349 6 8 |
+------------+-------------+-------------+
| 7 8 1 | 4 2 9 | 5 3 6 |
| 4 5 9 | 7 3 6 | 1 8 2 |
| 3 26 26 | 8 5 1 | 7 49 49 |
+------------+-------------+-------------+
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Play this puzzle online at the Daily Sudoku site |
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LloydB
Joined: 09 Jul 2007
Posts: 21
Location: Skagit Co., WA USA
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| Posted: Mon Apr 25, 2011 10:36 pm Post subject: |
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Marty,
Your grid has quite a few basic moves to make but you can still see the 267 XYZ wing in cells r1c2, r3c3 and r9c3.
This will solve R9c1 and r9c2 as 2 and 6 resp.
That will make r3c3 2 as there are no other 2s in c3 |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Apr 26, 2011 12:02 am Post subject: |
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OK, I see my big basics error, not seeing the locked 7s in box 6. That said, it seems that the XYZ-Wing and X-Wing will do it; the XY-Wing wasn't needed, at least when I played the rest of it online just now.
Thanks. |
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Julian
Joined: 28 Jul 2010
Posts: 9
Location: Menlo, GA
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| Posted: Wed Apr 27, 2011 1:53 am Post subject: |
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| I thought a W-wing was a rectangle of a single digit. How can this puzzle have a W-wing on 67? Thanks |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Apr 27, 2011 3:47 am Post subject: |
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| Julian wrote: | | I thought a W-wing was a rectangle of a single digit. How can this puzzle have a W-wing on 67? Thanks |
Maybe you're thinking of an X-Wing?
Look at the 67 cells in boxes 1 and 2. And look at the 6s in row 2. If the 6 ends up in box 1, then r1c2 must be = 7. If the 6 ends up in box 2, then r3c5 must be = 7. Thus, with one or the other having to be a 7, they act as pincers and no cell seeing both can contain 7. |
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Ema Nymton
Joined: 17 Apr 2009
Posts: 89
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| Posted: Wed Apr 27, 2011 11:29 am Post subject: |
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| Code: |
+------------+------------+-------------+
| 5 67* 8 | 1 4 27 | 69 279 3 |
| 1 3467 37 | 259 69 25 | 8 247 47 |
| 9 246 26 | 3 67 8 | 46 1 5 |
+------------+------------+-------------+
| 6 1 35 | 259 8 245 | 349 479 479 |
| 8 79 4 | 6 79 3 | 2 5 1 |
| 2 379 357 | 59 1 457 | 349 6 8 |
+------------+------------+-------------+
| 7 8 1 | 4 2 9 | 5 3 6 |
| 4 5 9 | 7 3 6 | 1 8 2 |
| 3 26 26 | 8 5 1 | 7 49 49 |
+------------+------------+-------------+
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How does one clear the '7' from r1c2? What are the steps?
Ema Nymton
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Julian
Joined: 28 Jul 2010
Posts: 9
Location: Menlo, GA
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| Posted: Wed Apr 27, 2011 11:43 am Post subject: |
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| Thanks, Marty. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Wed Apr 27, 2011 12:04 pm Post subject: |
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| Ema Nymton wrote: | .
| Code: |
+------------+------------+-------------+
| 5 67* 8 | 1 4 27 | 69 279 3 |
| 1 3467 37 | 259 69 25 | 8 247 47 |
| 9 246 26 | 3 67 8 | 46 1 5 |
+------------+------------+-------------+
| 6 1 35 | 259 8 245 | 349 479 479 |
| 8 79 4 | 6 79 3 | 2 5 1 |
| 2 379 357 | 59 1 457 | 349 6 8 |
+------------+------------+-------------+
| 7 8 1 | 4 2 9 | 5 3 6 |
| 4 5 9 | 7 3 6 | 1 8 2 |
| 3 26 26 | 8 5 1 | 7 49 49 |
+------------+------------+-------------+
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How does one clear the '7' from r1c2? What are the steps?
Ema Nymton
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Ema,
In your grid, solve 7 in R3. The puzzle is done.
If you really want to solve R1C2 first, use the skyscraper / kite on 7 in R5 and C6.
Keith |
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Ema Nymton
Joined: 17 Apr 2009
Posts: 89
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| Posted: Wed Apr 27, 2011 1:23 pm Post subject: |
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| keith wrote: | Ema,
In your grid, solve 7 in R3. The puzzle is done.
If you really want to solve R1C2 first, use the skyscraper / kite on 7 in R5 and C6.
Keith |
doh. Thank you. A case of being so close to the forest and not seeing the trees.
. |
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