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Requires One Advanced Move July 1, 2013

 
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arkietech



Joined: 31 Jul 2008
Posts: 1733
Location: Northwest Arkansas USA

PostPosted: Mon Jul 01, 2013 12:07 pm    Post subject: Requires One Advanced Move July 1, 2013 Reply with quote

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.|
 *-----------*


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Marty R.



Joined: 12 Feb 2006
Posts: 5178
Location: Rochester, NY, USA

PostPosted: Mon Jul 01, 2013 3:54 pm    Post subject: Reply with quote

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
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keith



Joined: 19 Sep 2005
Posts: 3184
Location: near Detroit, Michigan, USA

PostPosted: Mon Jul 01, 2013 4:27 pm    Post subject: Reply with quote

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

Keith
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arkietech



Joined: 31 Jul 2008
Posts: 1733
Location: Northwest Arkansas USA

PostPosted: Mon Jul 01, 2013 4:39 pm    Post subject: Reply with quote

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
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keith



Joined: 19 Sep 2005
Posts: 3184
Location: near Detroit, Michigan, USA

PostPosted: Mon Jul 01, 2013 4:48 pm    Post subject: Reply with quote

Marty,

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

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5178
Location: Rochester, NY, USA

PostPosted: Mon Jul 01, 2013 7:05 pm    Post subject: Reply with quote

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.
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Pat



Joined: 23 Feb 2010
Posts: 165

PostPosted: Tue Jul 02, 2013 10:48 am    Post subject: Reply with quote

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 )

    but amusing to note:
    Swordfish + X-wing (same digit, same time)
    solves the puzzle ( without those "naked" duos )
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