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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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 Posted: Tue Nov 22, 2011 3:41 am Post subject: Vanhagen Extreme Nov 21, 2011 |
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I am posting another Vanhagen Extreme I hopes that others are interested. If no response, then ..........
| Code: |
+-------+-------+-------+
| . . . | . 4 . | 9 . 3 |
| . . 3 | 1 . . | . . 5 |
| . . 9 | . . 5 | 1 7 . |
+-------+-------+-------+
| 6 2 . | . . . | . . . |
| . 3 . | . 8 . | . 9 . |
| . . . | . . . | . 1 6 |
+-------+-------+-------+
| . 1 6 | 8 . . | 4 . . |
| 7 . . | . . 6 | 2 . . |
| 4 . 2 | . 5 . | . . . |
+-------+-------+-------+
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Play online
After basics, I got:
| Code: | *-----------------------------------------------------------*
| 15 567 157 | 27 4 278 | 9 268 3 |
| 28 467 3 | 1 2679 2789 | 68 2468 5 |
| 28 46 9 | 23 236 5 | 1 7 48 |
|-------------------+-------------------+-------------------|
| 6 2 1578 | 3579 1379 1379 | 3578 348 478 |
| 15 3 1457 | 6 8 147 | 57 9 2 |
| 9 578 4578 | 2357 237 2347 | 3578 1 6 |
|-------------------+-------------------+-------------------|
| 3 1 6 | 8 279 279 | 4 5 79 |
| 7 589 58 | 4 139 6 | 2 38 189 |
| 4 89 2 | 379 5 1379 | 3678 368 1789 |
*-----------------------------------------------------------*
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I found an almost xy-wing that did the deed..........
xy-wing(48-2)r3c91+r2c8=ls(86)r2c87-(86=2)r1c8-(2=7)r1c4-r1c23=(7-4)r2c2=r3c2-(4=8=2)r3c91; r2c1<>2
Ted |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Tue Nov 22, 2011 8:15 am Post subject: |
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Ted,
A Wing starting from the same cells r2c8 + r3c19 ... 
"L3" Wing : 4r2c8=(4-8)r3c9=(8-2)r3c1=2r2c1 => -2r2c8; stte
JC |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Tue Nov 22, 2011 2:43 pm Post subject: |
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| JC Van Hay wrote: | Ted,
A Wing starting from the same cells r2c8 + r3c19 ...
"L3" Wing : 4r2c8=(4-8)r3c9=(8-2)r3c1=2r2c1 => -2r2c8; stte
JC |
I got the same thing. Cute? Ugly? Interesting.... | Code: |
*-----------------------------------------------------------*
| 15 567 157 | 7-2 4 278 | 9 e268 3 |
| 28 467 3 | 1 2679 2789 | 68 d2468 5 |
|b28 46 9 |a23 a236 5 | 1 7 c48 |
|-------------------+-------------------+-------------------|
| 6 2 1578 | 3579 1379 1379 | 3578 348 478 |
| 15 3 1457 | 6 8 147 | 57 9 2 |
| 9 578 4578 | 2357 237 2347 | 3578 1 6 |
|-------------------+-------------------+-------------------|
| 3 1 6 | 8 279 279 | 4 5 79 |
| 7 589 58 | 4 139 6 | 2 38 189 |
| 4 89 2 | 379 5 1379 | 3678 368 1789 |
*-----------------------------------------------------------*
(2)r3c45=(2-8)r3c1=(8-4)r3c9=(4-2)r2c8=(2)r1c8 => r1c2<>2 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Tue Nov 22, 2011 2:58 pm Post subject: |
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I think those short, simple chains are elegant 
Ted |
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SudoQ
Joined: 02 Aug 2011
Posts: 127
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| Posted: Tue Nov 22, 2011 5:13 pm Post subject: |
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Another solution is to eliminate 6 from r1c8 starting from the bivalue cell r2c1 via r2c7.
/SudoQ |
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