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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sun May 10, 2009 6:56 am Post subject: Puzzle NR_014 |
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| Code: | +-----------------------+
| . 8 . | 3 . 2 | . 9 . |
| 2 . . | . . 4 | . . . |
| . . 5 | 6 7 . | 8 . . |
|-------+-------+-------|
| 1 . 2 | . . 5 | 6 4 . |
| . . 7 | . 4 . | . . . |
| 4 6 . | 2 . . | . . . |
|-------+-------+-------|
| . . 8 | 5 . . | 7 . . |
| 6 . . | 8 . . | . 5 . |
| . . . | . . . | . . 9 |
+-----------------------+
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Sun May 10, 2009 11:42 am Post subject: |
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I needed: | Quote: | kite 9
xy 139
ur 23 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun May 10, 2009 5:45 pm Post subject: |
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I got stuck with a longer path this time; I had some jelly on my fingers. | Quote: | x-wing 4,
finned JELLY on 9 in r3478c1256 with fin r8c3 that deletes r2c2,
finned x-wing on 9,
xy-wing 139,
Type 1 UR 23.
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Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu May 14, 2009 12:41 am Post subject: |
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I just can't seem to get going on this one. I've used a couple of ERs on 4, Finned X-Wing on 9 and an XY-Wing Chain with pincer transport, 13-39-39-39-19 and find myself here with no apparent moves, at least apparent to me.
| Code: |
+---------------+-------------+-----------------+
| 7 8 146 | 3 5 2 | 14 9 16 |
| 2 139 1369 | 19 8 4 | 135 1367 13567 |
| 39 1349 5 | 6 7 19 | 8 123 1234 |
+---------------+-------------+-----------------+
| 1 39 2 | 7 39 5 | 6 4 8 |
| 8 5 7 | 19 4 6 | 1239 123 123 |
| 4 6 39 | 2 139 8 | 159 17 157 |
+---------------+-------------+-----------------+
| 39 12349 8 | 5 12 139 | 7 1236 12346 |
| 6 12379 1349 | 8 129 1379 | 1234 5 123 |
| 5 1237 13 | 4 6 37 | 123 8 9 |
+---------------+-------------+-----------------+
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Thu May 14, 2009 2:10 am Post subject: |
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| Marty R. wrote: | I just can't seem to get going on this one. I've used a couple of ERs on 4, Finned X-Wing on 9 and an XY-Wing Chain with pincer transport, 13-39-39-39-19 and find myself here with no apparent moves, at least apparent to me.
| Code: |
+---------------+-------------+-----------------+
| 7 8 146 | 3 5 2 | 14 9 16 |
| 2 139 1369 | 19 8 4 | 135 1367 13567 |
| 39 1349 5 | 6 7 19 | 8 123 1234 |
+---------------+-------------+-----------------+
| 1 39 2 | 7 39 5 | 6 4 8 |
| 8 5 7 | 19 4 6 | 1239 123 123 |
| 4 6 39 | 2 139 8 | 159 17 157 |
+---------------+-------------+-----------------+
| 39 12349 8 | 5 12 139 | 7 1236 12346 |
| 6 12379 1349 | 8 129 1379 | 1234 5 123 |
| 5 1237 13 | 4 6 37 | 123 8 9 |
+---------------+-------------+-----------------+
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Hidden pair column 9? |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu May 14, 2009 3:46 am Post subject: |
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| Quote: | | Hidden pair column 9? |
Rats!! How did that escape me? Of course, I've said many times that I can't spot hidden pairs, but generally catch the complementary subsets, 12346 quint in this case.
Thanks Dan.  |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu May 14, 2009 5:01 am Post subject: |
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Unfortunately, the quint doesn't do anything, leaving me here:
| Code: |
+---------------+-------------+-----------------+
| 7 8 146 | 3 5 2 | 14 9 16 |
| 2 139 1369 | 19 8 4 | 135 1367 57 |
| 39 1349 5 | 6 7 19 | 8 123 1234 |
+---------------+-------------+-----------------+
| 1 39 2 | 7 39 5 | 6 4 8 |
| 8 5 7 | 19 4 6 | 1239 123 123 |
| 4 6 39 | 2 139 8 | 159 17 57 |
+---------------+-------------+-----------------+
| 39 12349 8 | 5 12 139 | 7 1236 12346 |
| 6 12379 1349 | 8 129 1379 | 1234 5 123 |
| 5 1237 13 | 4 6 37 | 123 8 9 |
+---------------+-------------+-----------------+
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu May 14, 2009 5:20 am Post subject: |
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| Marty R. wrote: | Unfortunately, the quint doesn't do anything, leaving me here:
| Code: |
+---------------+-------------+-----------------+
| 7 8 146 | 3 5 2 | 14 9 16 |
| 2 139 1369 | 19 8 4 | 135 1367 57 |
| 39 1349 5 | 6 7 19 | 8 123 1234 |
+---------------+-------------+-----------------+
| 1 39 2 | 7 39 5 | 6 4 8 |
| 8 5 7 | 19 4 6 | 1239 123 123 |
| 4 6 39 | 2 139 8 | 159 17 57 |
+---------------+-------------+-----------------+
| 39 12349 8 | 5 12 139 | 7 1236 12346 |
| 6 12379 1349 | 8 129 1379 | 1234 5 123 |
| 5 1237 13 | 4 6 37 | 123 8 9 |
+---------------+-------------+-----------------+
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Play this puzzle online at the Daily Sudoku site |
This has a nasty 2-String Kites in <9>. And you're still not done. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu May 14, 2009 3:34 pm Post subject: |
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| Quote: | | This has a nasty 2-String Kites in <9>. And you're still not done. |
Thanks. I don't know the difference between a Kite and a 2-String Kite. But I do see a Kite that will take out the 9 from r2c2, setting up a W-Wing on 13, but I don't know that that'll take me very far. I'll know in a while. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu May 14, 2009 3:54 pm Post subject: |
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OK, one lousy little kite I didn't see blew it open. After the kite was the W-Wing on 13, an XY-Wing on 139 and a Type 1 UR on 23 to finish it off.
Thanks again, now I can get back to my life.  |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu May 14, 2009 7:37 pm Post subject: |
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| Marty R. wrote: | OK, one lousy little kite I didn't see blew it open. After the kite was the W-Wing on 13, an XY-Wing on 139 and a Type 1 UR on 23 to finish it off.
Thanks again, now I can get back to my life. |
You are very welcome Marty !
I have more puzzles with (2-String) Kites. I'll try and remember to post a warning with them. You're not the only one whose been stymied by them. |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Fri May 15, 2009 3:48 am Post subject: |
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| Code: | .------------------------.------------------------.------------------------.
| 7 8 146 | 3 5 2 | 14 9 146 |
| 2 X139 1369 |-19 8 4 | 135 1367 57 |
|X39 1349 5 | 6 7 X19 | 8 123 1234 |
:------------------------+------------------------+------------------------:
| 1 *39 2 | 7 *39 5 | 6 4 8 |
| 8 5 7 |*19 4 6 | 1239 123 123 |
| 4 6 39 | 2 139 8 | 159 17 57 |
:------------------------+------------------------+------------------------:
| 39 12349 8 | 5 129 139 | 7 1236 12346 |
| 6 123479 1349 | 8 129 1379 | 1234 5 1234 |
| 5 1237 13 | 4 6 137 | 123 8 9 |
'------------------------'------------------------'------------------------' |
notice the cells marked.
if you remove the 9 in r2c2 then the xy-wing can be formed {1,3,9} in r2c2, r3c1, r3c6
that xy-wing would eliminate the 1 in r2c4...
also
if the xy-wing is false, the 9 in r2c2 is true...
xy-wing[(1,3)r2c2, (3,9)r3c1, (1,9)r3c5] = (9)r2c2 - (9)r4c2 = (9)r4c5 - (9=1)r5c4; r2c4 <> 1
this means that if the xy-wing is true then the 1 in r2c4 can't exist
and, if the xy-wing is false the 1 in r5c4 is true.
either way the 1 in r2c4 is false and can be eliminated.
after the dust settles... a UR type 1 {2,3} r35c89
finishes it. |
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