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Oct 30 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Thu Oct 29, 2015 10:58 pm    Post subject: Oct 30 VH Reply with quote
Code:

+------------+---------+-------------+
| 5   6  8   | 4  1  9 | 3     2  7  |
| 147 14 147 | 3  8  2 | 6     9  5  |
| 9   2  3   | 7  6  5 | 1     8  4  |
+------------+---------+-------------+
| 2   14 145 | 8  9  7 | 45    6  3  |
| 6   8*9 79  | 5  3  4 | #27-8   1  28* |
| 478 3  457 | 6  2  1 | 4578  57 9  |
+------------+---------+-------------+
| 48  5  24  | 9  47 6 | 278   3  1  |
| 14-8 8*9 6   | 12 47 3 | 2579-8 57 28* |
| 3   7  12-9 | 12 5  8 | 29    4  6  |
+------------+---------+-------------+
X-wing on 8 in col 29; r8c17, r5c7<>8 opens
XY-Wing 27-9 pivoted in r5c7; r9c3<>9; stte
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Fri Oct 30, 2015 7:08 am    Post subject: Oct 30 VH Reply with quote
Code:

+------------+---------+-------------+
| 5   6  8   | 4  1  9 | 3     2  7  |
| 147 14 147 | 3  8  2 | 6     9  5  |
| 9   2  3   | 7  6  5 | 1     8  4  |
+------------+---------+-------------+
| 2   14 145 | 8  9  7 | 45    6  3  |
| 6   e89 79  | 5  3  4 | 278   1  2-8 |
| d478 3  457 | 6  2  1 | 4578  57 9  |
+------------+---------+-------------+
| c48  5  24  | 9  47 6 | 278   3  1  |
| c148 89 6   | b12 47 3 | 25789 57 a28 |
| 3   7  129 | 12 5  8 | 29    4  6  |
+------------+---------+-------------+
A one stepper
(8=2)r8c9-(2=1)r8c4-(1=48)r78c1-r6c1=(8)r5c2 =>r5c9<>8; stte
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roaa



Joined: 18 Apr 2009
Posts: 112
Location: Sweden
PostPosted: Fri Oct 30, 2015 8:39 am    Post subject: Oct 30 VH Reply with quote
Another one-stepper: XY-wing 289 gives r8c7<>9, which is enough.
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Fri Oct 30, 2015 2:11 pm    Post subject: Re: Oct 30 VH Reply with quote
roaa wrote:
Another one-stepper: XY-wing 289 gives r8c7<>9, which is enough.
Bravo
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Oct 30, 2015 3:58 pm    Post subject: Re: Oct 30 VH Reply with quote
Clement wrote:
roaa wrote:
Another one-stepper: XY-wing 289 gives r8c7<>9, which is enough.
Bravo


I'll second that
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Fri Oct 30, 2015 4:47 pm    Post subject: Reply with quote
And if you miss the one-stepper, Clement's 8 X-Wing also opens up a 278 XYZ-Wing with pivot at r7c7 so r89c7<>2 solving it.
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