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Requires One Advanced Move July 1, 2013

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arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Mon Jul 01, 2013 12:07 pm Post subject: Requires One Advanced Move July 1, 2013

Code:

*-----------*
|..1|.73|.65|
|5.3|6..|72.|
|..6|.5.|..3|
|---+---+---|
|23.|.67|58.|
|..5|8.4|...|
|1.8|325|.97|
|---+---+---|
|68.|73.|15.|
|.57|..6|..8|
|31.|5..|.7.|
*-----------*

Play/Print this puzzle online

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Mon Jul 01, 2013 3:54 pm Post subject:

Code:

+---------------+----------------+--------------+
| 489 249 1 | 249 7 3 | 489 6 5 |
| 5 49 3 | 6 1489 189 | 7 2 149 |
| 4789 2479 6 | 1249 5 1289 | 489 14 3 |
+---------------+----------------+--------------+
| 2 3 49 | 19 6 7 | 5 8 14 |
| 79 679 5 | 8 19 4 | 236 13 126 |
| 1 46 8 | 3 2 5 | 46 9 7 |
+---------------+----------------+--------------+
| 6 8 249 | 7 3 29 | 1 5 249 |
| 49 5 7 | 1249 149 6 | 2349 34 8 |
| 3 1 249 | 5 489 289 | 2469 7 2469 |
+---------------+----------------+--------------+

Play this puzzle online at the Daily Sudoku site

XY-Wing (13-4) or M-Wing (14), both with transport.

(4=1)r4c9-(1=3)r5c8-(3=4)r8c8-r8c1=r79c3=>r4c3<>4

keith

Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

Posted: Mon Jul 01, 2013 4:27 pm Post subject:

There is a swordfish on 4 that solves it. The X-wing on 4 does not. Keith

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Mon Jul 01, 2013 4:39 pm Post subject:

Code:

*-----------------------------------------------------------*
| 489 249 1 | 249 7 3 | 489 6 5 |
| 5 49 3 | 6 489 189 | 7 2 149 |
| 4789 2479 6 | 249 5 129 | 489 14 3 |
|-------------------+-------------------+-------------------|
| 2 3 49 | 19 6 7 | 5 8 *14 |
| 79 679 5 | 8 19 4 | 236 *13 126 |
| 1 46 8 | 3 2 5 | 46 9 7 |
|-------------------+-------------------+-------------------|
| 6 8 249 | 7 3 29 | 1 5 29-4 |
| 49 5 7 | 1249 149 6 | 2349 *34 8 |
| 3 1 249 | 5 489 289 | 2469 7 269-4 |
*-----------------------------------------------------------*

xy-wing

keith

Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

Posted: Mon Jul 01, 2013 4:48 pm Post subject:

Marty, The XY-wing takes out 4 in R7C9, which solves it without transport. Keith

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Mon Jul 01, 2013 7:05 pm Post subject:

keith wrote:

Marty,

The XY-wing takes out 4 in R7C9, which solves it without transport.

Keith

Yes, I noticed. As I do all too often, I just eyeballed what the XY-Wing took out without checking more carefully and reached an incorrect conclusion.

Pat

Joined: 23 Feb 2010
Posts: 207

Posted: Tue Jul 02, 2013 10:48 am Post subject:

keith wrote:

There is a swordfish on 4 that solves it.

The X-wing on 4 does not.

right

one "advanced" move — could be Swordfish 4
( followed by a couple of "basic" moves: "naked" duos )

Swordfish + X-wing

without those "naked" duos

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