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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sat Nov 21, 2015 9:44 am Post subject: Free Press 20 Nov 2015 |
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| Code: |
+-----------+-----------+-----------+
| 4 . . | . . . | . 6 . |
| . . 3 | . 5 . | . . 7 |
| . . . | 7 1 . | 5 . . |
+-----------+-----------+-----------+
| . . . | . 2 8 | . . 3 |
| . . 8 | 9 . 3 | 1 . . |
| 2 . . | 5 4 . | . . 6 |
+-----------+-----------+-----------+
| . . 6 | . 8 5 | . . . |
| 1 . . | . . . | 9 . . |
| . 8 . | . . . | . . 5 |
+-----------+-----------+-----------+
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Keith |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Sat Nov 21, 2015 11:30 am Post subject: |
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R6 -> r9c5=9; stte :
| Code: | +------------+--------------------+--------------+
| 4 5 7 | 238 39 29 | 28 6 1 |
| 9 1 3 | 268 5 26 | 248 48 7 |
| 8 6 2 | 7 1 4 | 5 3 9 |
+------------+--------------------+--------------+
| 56 47 19 | 16 2 8 | 47 59 3 |
| 56 47 8 | 9 6(7) 3 | 1 245 24 |
| 2 3 19 | 5 4 (17) | 78 89 6 |
+------------+--------------------+--------------+
| 7 9 6 | 124 8 5 | 3 124 24 |
| 1 2 5 | 346 367 67 | 9 47 8 |
| 3 8 4 | 12 (79) 27-9(1) | 6 127 5 |
+------------+--------------------+--------------+
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Wing[(9=7)r9c5-7r5c5=(7-1)r6c6=1r9c6]-9r9c6=9r9c5; stte |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sat Nov 21, 2015 1:23 pm Post subject: |
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| Code: | +----------------+----------------+----------------+
| 4 5 7 | 238 39 29 | 28 6 1 |
| 9 1 3 | 268 5 26 | 248 48 7 |
| 8 6 2 | 7 1 4 | 5 3 9 |
+----------------+----------------+----------------+
| 56 47 19 | 16 2 8 | 47 59 3 |
| 56 47b 8 | 9 67c 3 | 1 245 24* |
| 2 3 19 | 5 4 17d | 78 89 6 |
+----------------+----------------+----------------+
| 7 9 6 | 124 8 5 | 3 124 24* |
| 1 2 5 | 346 367 6-7 | 9 47a 8 |
| 3 8 4 | 12 79 1279 | 6 127 5 |
+----------------+----------------+----------------+
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ab are pincers (7) of a W-wing. With transport cd it takes out 7 in R8C6.
Keith |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Nov 21, 2015 6:23 pm Post subject: |
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| Code: |
+----------+--------------+------------+
| 4 5 7 | 238 39 29 | 28 6 1 |
| 9 1 3 | 268 5 26 | 248 48 7 |
| 8 6 2 | 7 1 4 | 5 3 9 |
+----------+--------------+------------+
| 56 47 19 | 16 2 8 | 47 59 3 |
| 56 47 8 | 9 67 3 | 1 245 24 |
| 2 3 19 | 5 4 17 | 78 89 6 |
+----------+--------------+------------+
| 7 9 6 | 124 8 5 | 3 124 24 |
| 1 2 5 | 346 367 67 | 9 47 8 |
| 3 8 4 | 12 79 1279 | 6 127 5 |
+----------+--------------+------------+
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Play this puzzle online at the Daily Sudoku site
UR (12)r79c48. Killers yield common outcome
Pseudo cell 47 inr79c8-(4=8)r2c8
4r7c4-r8c4=r8c8-(4=8)r2c8=> 8r2c8 |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Sat Nov 21, 2015 7:44 pm Post subject: |
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I finally found a chain that begins and ends with pincers - just like I recently learned from Marty and Bat. And after reading the following link again, I finally realized that a bivalue cell can be either a strong link or a weak link! I didn't know that! No wonder I couldn't express chains like the following before. I thought it always had to be a strong link! What a great read this is! (Who was the guy named daj...? Is he still around?)
http://www.dailysudoku.com/sudoku/forums/viewtopic.php?t=6708
(I think the following Eureka notation's right? Let me know if it's not.)
(1-7)r6c6=(7-8)r6c7=8r6c8-(8=4)r2c8-(4=7)r8c8=>r8c6<>7. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Nov 21, 2015 9:14 pm Post subject: |
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| Quote: | | (Who was the guy named daj...? Is he still around?) |
Danny A. Jones. He's still around but doesn't post here anymore. He used to generate puzzles and post them, but he quit when everyone but me stopped posting solutions.
| Quote: | (I think the following Eureka notation's right? Let me know if it's not.)
(1-7)r6c6=(7-8)r6c7=8r6c8-(8=4)r2c8-(4=7)r8c8=>r8c6<>7. |
Don, yeah, that works. I think most would notate it with a change in the first term: 7r6c6=(7-8)r6c7 |
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bat999
Joined: 09 Jul 2015
Posts: 55
Location: UK
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| Posted: Mon Nov 30, 2015 11:16 pm Post subject: |
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| Code: | .------------.-------------------.--------------.
| 4 5 7 | 238 3-9 b29 | 28 6 1 |
| 9 1 3 | 268 5 b26 | 248 48 7 |
| 8 6 2 | 7 1 4 | 5 3 9 |
:------------+-------------------+--------------:
| 56 47 19 | 16 2 8 | 47 59 3 |
| 56 47 8 | 9 67 3 | 1 245 24 |
| 2 3 19 | 5 4 17 | 78 89 6 |
:------------+-------------------+--------------:
| 7 9 6 | 124 8 5 | 3 124 24 |
| 1 2 5 | 346 367 b67 | 9 47 8 |
| 3 8 4 | 12 a79 127-9 | 6 127 5 |
'------------'-------------------'--------------' |
(9=7)r9c5 - (7=9)r128c6 => -9 r1c5,r9c6; stte
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