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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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 Posted: Thu May 05, 2011 11:33 pm Post subject: May 6 VH |
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| W-Wing 57 with strong link 5 in col 7 solves it by setting r7c6<>7. |
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prakash
Joined: 02 Jan 2008
Posts: 67
Location: New Jersey, USA
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| Posted: Fri May 06, 2011 2:07 am Post subject: |
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Also a sashimi X wing on 5 does the trick.
A two stepper ... X wing on 6 followed by a BUG+1 |
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Ema Nymton
Joined: 17 Apr 2009
Posts: 89
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| Posted: Fri May 06, 2011 10:45 am Post subject: |
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| prakash wrote: | Also a sashimi X wing on 5 does the trick.
A two stepper ... X wing on 6 followed by a BUG+1 |
For those of us who need a show and tell session:
| Code: |
+----------+-----------+---------+
| 5 4 2 | 7 8 6 | 9 3 1 |
| 3 1 7 | 5 9 4 | 8 2 6 |
| 6 9 8 | 2 3 1 | 7 4 5 |
+----------+-----------+---------+
| 4 2 1 | 8 567 57 | 56 9 3 |
| 8 56A 9 | 1 4 3 | 2 B56 7 |
| 7 X35 36 | 9 56* 2 | 1 8 4 |
+----------+-----------+---------+
| 2 8 36 | 36 1 57 | 4 57 9 |
| 9 37Y 4 | 36 57Z 8 | 56 1 2 |
| 1 67D 5 | 4 2 9 | 3 C67 8 |
+----------+-----------+---------+
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ABCD forces the removal of '6' from X&Y. If A is '6' then C must be '6' and if D is '6' then B must be '6'
XYZ removes the '5' from r6c5.
Ema Nymton
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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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| Posted: Fri May 06, 2011 11:28 am Post subject: May 6 VH |
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| Another single stepper is a kite in 5 originating from BOX 9 which removes 5 in r4c6. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Fri May 06, 2011 4:47 pm Post subject: |
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The "official" solution is probably an X-wing on 6 followed by an XY-wing.
Or, there is a different XY-wing available before the X-wing.
After basics: | Code: | +----------------+----------------+----------------+
| 5 4 2 | 7 8 6 | 9 3 1 |
| 3 1 7 | 5 9 4 | 8 2 6 |
| 69 69 8 | 2 3 1 | 7 4 5 |
+----------------+----------------+----------------+
| 4 2 1 | 8 567 57 | 56 9 3 |
| 8 56 9 | 1 4 3 | 2 56 7 |
| 67 3567 36 | 9 56 2 | 1 8 4 |
+----------------+----------------+----------------+
| 2 8 36 | 36 1 57 | 4 57 9 |
| 679 3679 4 | 36 57 8 | 56 1 2 |
| 1 67 5 | 4 2 9 | 3 67 8 |
+----------------+----------------+----------------+ |
Keith
Last edited by keith on Fri May 06, 2011 6:49 pm; edited 1 time in total |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Fri May 06, 2011 6:12 pm Post subject: |
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| Skyscraper on 5 seems simplest single stepper. |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Fri May 06, 2011 10:00 pm Post subject: yet another |
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| as well as the X wing followed by bug+1 or XY wing or the single step W wing on 57 or the skyscaper in 5, there is an ER on 5s that denies a 5 at r4c7(just like the skyscraper) 'cos the strongly linked 5s in row8 would kill all the 5s in Box5 |
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