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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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 Posted: Wed Dec 28, 2011 11:48 am Post subject: rh122811 |
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There is something fishy about this one | Code: | *-----------*
|...|...|.41|
|6..|...|...|
|...|8..|...|
|---+---+---|
|5..|6..|2..|
|.4.|...|.7.|
|...|3..|...|
|---+---+---|
|...|.71|6..|
|..2|...|3..|
|.7.|.4.|...|
*-----------* |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Dec 28, 2011 6:11 pm Post subject: |
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This reminds me of an assignment in advanced math which requires 90% arithmetic to complete it.
W-Wing (89) in r4c2 and r5c7, SL 9 in r6, flightless with transport of 8 from r5c7 to r2c9; r2c2<>8.
| Code: |
+------------+-------------+--------------+
| 89 2 589 | 7 3 6 | 589 4 1 |
| 6 589 1 | 4 59 259 | 7 3 289 |
| 7 3 4 | 8 1 259 | 59 6 29 |
+------------+-------------+--------------+
| 5 89 7 | 6 89 4 | 2 1 3 |
| 2 4 3 | 1 589 59 | 89 7 6 |
| 1 6 89 | 3 2 7 | 4 589 589 |
+------------+-------------+--------------+
| 3 589 589 | 29 7 1 | 6 289 4 |
| 4 1 2 | 59 6 8 | 3 59 7 |
| 89 7 6 | 259 4 3 | 1 2589 589 |
+------------+-------------+--------------+
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Play this puzzle online at the Daily Sudoku site |
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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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| Posted: Wed Dec 28, 2011 6:25 pm Post subject: rh122811 |
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A kite on 8 originating from BOX 1 in r2c1; r9c9<>8 leads to
A skyscraper on 8 in r26 running from col 9; r4c2<>8 which solves it. |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Wed Dec 28, 2011 6:55 pm Post subject: |
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I was hoping someone would see my fish! | Code: | *-----------------------------------------------------------*
| 89 2 589 | 7 3 6 | 589 4 1 |
| 6 *589 1 | 4 59 259 | 7 3 *289 |
| 7 3 4 | 8 1 259 | 59 6 29 |
|-------------------+-------------------+-------------------|
| 5 *89 7 | 6 89 4 | 2 1 3 |
| 2 4 3 | 1 589 59 | 89 7 6 |
| 1 6 fr89 | 3 2 7 | 4 59-8 59-8 |
|-------------------+-------------------+-------------------|
| 3 589 589 | 29 7 1 | 6 *289 4 |
| 4 1 2 | 59 6 8 | 3 59 7 |
| 89 7 6 | 259 4 3 | 1 *2589 *589 |
*-----------------------------------------------------------*
finned franken swordfish 8
(8)r6c3=franken swordfish:(8)r2b49c289 => r6c89<>8 |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Wed Dec 28, 2011 7:12 pm Post subject: |
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From the B/B-Plot, the following "fish" is simpler ... 
Swordfish(8R245) : -8r1c7.r6c9; stte |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Wed Dec 28, 2011 8:22 pm Post subject: |
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| JC Van Hay wrote: | From the B/B-Plot, the following "fish" is simpler ...
Swordfish(8R245) : -8r1c7.r6c9; stte |
I don't see the swordfish? 
help! | Code: | *-----------------------------------------------------------*
| 89 2 589 | 7 3 6 | 589 4 1 |
| 6 *589 1 | 4 59 259 | 7 3 *289 |
| 7 3 4 | 8 1 259 | 59 6 29 |
|-------------------+-------------------+-------------------|
| 5 *89 7 | 6 *89 4 | 2 1 3 |
| 2 4 3 | 1 *589 59 |*89 7 6 |
| 1 6 89 | 3 2 7 | 4 589 589 |
|-------------------+-------------------+-------------------|
| 3 589 589 | 29 7 1 | 6 289 4 |
| 4 1 2 | 59 6 8 | 3 59 7 |
| 89 7 6 | 259 4 3 | 1 2589 589 |
*-----------------------------------------------------------*
Swordfish(8R245)?? |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Wed Dec 28, 2011 8:44 pm Post subject: |
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| arkietech wrote: | | JC Van Hay wrote: | From the B/B-Plot, the following "fish" is simpler ...
Swordfish(8R245) : -8r1c7.r6c9; stte |
I don't see the swordfish?
help! |
Dan,
8R245 is a "double" Sashimi Swordfish or an X Chain on 8s : r2c9=r2c2-r4c2=r4c5-r5c5=r5c7 => -8r1c7.r6c9
Best regards, JC |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Wed Dec 28, 2011 9:16 pm Post subject: |
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| JC Van Hay wrote: | | arkietech wrote: | | JC Van Hay wrote: | From the B/B-Plot, the following "fish" is simpler ...
Swordfish(8R245) : -8r1c7.r6c9; stte |
I don't see the swordfish?
help! |
Dan,
8R245 is a "double" Sashimi Swordfish or an X Chain on 8s : r2c9=r2c2-r4c2=r4c5-r5c5=r5c7 => -8r1c7.r6c9
Best regards, JC |
Thanks JC!
It is a good day when you learn something. |
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ronk
Joined: 07 May 2006
Posts: 398
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| Posted: Wed Dec 28, 2011 9:29 pm Post subject: |
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| JC Van Hay wrote: | | 8R245 is a "double" Sashimi Swordfish or an X Chain on 8s : r2c9=r2c2-r4c2=r4c5-r5c5=r5c7 => -8r1c7.r6c9 |
"X-chain" is the better name IMO. Had Angus Johnson chosen to define "multi-coloring" to use two or more conjugate chains, an x-chain would today be within SSTS. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Wed Dec 28, 2011 11:17 pm Post subject: |
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| Code: | finned/Sashimi Franken Swordfish r145\c27b5
*-------------------------------------------------------------*
| #89 2 #589 | 7 3 6 | *589 4 1 |
| 6 5-89 1 | 4 59 259 | 7 3 289 |
| 7 3 4 | 8 1 259 | 59 6 29 |
|--------------------+-------------------+--------------------|
| 5 *89 7 | 6 *89 4 | 2 1 3 |
| 2 4 3 | 1 *589 %59 | *89 7 6 |
| 1 6 89 | 3 2 7 | 4 589 589 |
|--------------------+-------------------+--------------------|
| 3 589 589 | 29 7 1 | 6 289 4 |
| 4 1 2 | 59 6 8 | 3 59 7 |
| 89 7 6 | 259 4 3 | 1 2589 589 |
*-------------------------------------------------------------*
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Now, all you need to do is decide if the fish is for <8> or <9> ... or both! |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Thu Dec 29, 2011 1:31 am Post subject: |
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After basics: | Code: | +----------------+----------------+----------------+
|*89 2 589 | 7 3 6 |#589 4 1 |
| 6 58-9 1 | 4 59 259 | 7 3 289 |
| 7 3 4 | 8 1 259 | 59 6 29 |
+----------------+----------------+----------------+
| 5 *89 7 | 6 #89 4 | 2 1 3 |
| 2 4 3 | 1 #589 59 |#89 7 6 |
| 1 6 89 | 3 2 7 | 4 589 589 |
+----------------+----------------+----------------+
| 3 589 589 | 29 7 1 | 6 289 4 |
| 4 1 2 | 59 6 8 | 3 59 7 |
| 89 7 6 | 259 4 3 | 1 2589 589 |
+----------------+----------------+----------------+ |
The cells * are W-wing pincers on 9. An XY-wing finishes it off.
Keith |
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Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
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| Posted: Fri Dec 30, 2011 1:01 am Post subject: |
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Seasons Greetings to all, or as John Lennon once sang,
“’appy Krimble!”
All those remote pair possibilities, there just has to be oddagons. Here’s a quick and easy one using Keith's pattern.
| Code: | +------------+-------------+--------------+
|*89 2 589 | 7 3 6 |*89+5 4 1 |
| 6 *89+5 1 | 4 -59 259 | 7 3 289 |
| 7 3 4 | 8 1 259 | 59 6 29 |
+------------+-------------+--------------+
| 5 *89 7 | 6 *89 4 | 2 1 3 |
| 2 4 3 | 1 *89+5 59 |*89 7 6 |
| 1 6 89 | 3 2 7 | 4 589 589 |
+------------+-------------+--------------+
| 3 589 589 | 29 7 1 | 6 289 4 |
| 4 1 2 | 59 6 8 | 3 59 7 |
| 89 7 6 | 259 4 3 | 1 2589 589 |
+------------+-------------+--------------+ |
(89)oddagon, guardian 5s => r2c5<>5
(5)r2c2
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(5)r5c5
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(5)r1c7-r3c7=(5)r3c6 |
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ronk
Joined: 07 May 2006
Posts: 398
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| Posted: Fri Dec 30, 2011 3:28 am Post subject: |
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| Luke451 wrote: | (89)oddagon, guardian 5s => r2c5<>5
(5)r2c2
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(5)r5c5
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(5)r1c7-r3c7=(5)r3c6 |
Or using just the 8s in those cells, with externals guarding against an impossible odd-length conjugate loop: (8)r1c3 = (8)r7c2 ==> r2c2<>8
[edits: added the following]
Furthermore, since the empty rectangle pattern in b1 is a grouped conjugate link, there's actually only one required guardian: (8)r7c2 ==> r24c2<>8
In AIC form: (8)r2c2 - r1c13 = r1c7 - r5c7 = r5c5 - r4c5 = (8)r4c2 ==> r2c2<>8
A second AIC, with the strong and weak inferences reversed, yields r4c2<>8. |
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ronk
Joined: 07 May 2006
Posts: 398
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| Posted: Fri Jan 06, 2012 2:46 am Post subject: |
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Thinking someone might be interested in graphics for the two oddagons above. "Truths" and "links" correspond to "base sets" and "cover sets", respectively.
____ ____
| Code: | | An almost illegal loop of 7 bivalues An almost illegal loop of 7 bilocals |
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