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au tough July 3, 2012

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arkietech

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

Posted: Tue Jul 03, 2012 6:51 am Post subject: au tough July 3, 2012

Code:

*-----------*
|.1.|96.|...|
|...|..4|2.7|
|4..|...|3..|
|---+---+---|
|..9|..5|.3.|
|...|.9.|...|
|.7.|2..|1..|
|---+---+---|
|..5|...|..6|
|6.2|8..|...|
|...|.46|.8.|
*-----------*

Play online

SudoQ

Joined: 02 Aug 2011
Posts: 127

Posted: Tue Jul 03, 2012 6:56 pm Post subject:

Code:

|---------------|----------------|------------|
| 2 1 37 | 9 6 37 | 8 5 4 |
| 9 5 38 | 13 138 4 | 2 6 7 |
| 4 6 78 |(57) 2(5)8 278 | 3 9 1 |
|---------------|----------------|------------|
| 1 2 9 | 4 7 5 | 6 3 8 |
| 38 38 4 | 6 9 1 | 7 2 5 |
| 5 7 6 | 2 38 38 | 1 4 9 |
|---------------|----------------|------------|
| 378 3489 5 | 13(7)123 2379 | 49 17 6 |
| 6 49 2 | 8 (15) 9-7 | 459 (17) 3 |
| 37 39 1 | 35(7)4 6 | 59 8 2 |
|---------------|----------------|------------|

/SudoQ

Marty R.

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

Posted: Tue Jul 03, 2012 11:20 pm Post subject:

Took me two steps to eliminate the same 7. After a Type 4 UR (38); r7c12<>3, my grid looked like this:

Code:

+-----------+----------------+-----------+
| 2 1 37 | 9 6 D37 | 8 5 4 |
| 9 5 38 | 13 138 4 | 2 6 7 |
| 4 6 78 | 57 258 D278 | 3 9 1 |
+-----------+----------------+-----------+
| 1 2 9 | 4 7 5 | 6 3 8 |
| 38 38 4 | 6 9 1 | 7 2 5 |
| 5 7 6 | 2 38 38 | 1 4 9 |
+-----------+----------------+-----------+
| 78 489 5 | 13 123 2379 | 49 17 6 |
| 6 49 2 | 8 A15 -79 | 459 B17 3 |
| 37 39 1 | C57 4 6 | 59 8 2 |
+-----------+----------------+-----------+

XY-Wing (157), denoted by ABC. Transport 7 from C to D; r8c6<>7.

SudoQ, what is the name of the move you used?

arkietech

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

Posted: Wed Jul 04, 2012 6:42 am Post subject:

Marty, This is what I came up with. It is like an xy-wing with one cell being a 57 pseudo cell.

Code:

*-----------------------------------------------------------*
| 2 1 37 | 9 6 37 | 8 5 4 |
| 9 5 38 |c13 138 4 | 2 6 7 |
| 4 6 78 | 57 258 278 | 3 9 1 |
|-------------------+-------------------+-------------------|
| 1 2 9 | 4 7 5 | 6 3 8 |
| 38 38 4 | 6 9 1 | 7 2 5 |
| 5 7 6 | 2 38 38 | 1 4 9 |
|-------------------+-------------------+-------------------|
| 378 3489 5 |c137 123 2379 | 49 17 6 |
| 6 49 2 | 8 b15 9-7 | 459 a17 3 |
| 37 39 1 |c357 4 6 | 59 8 2 |
*-----------------------------------------------------------*
(7=1)r8c8-(1=5)r8c5-(513=7)r279c4 => -7r8c6; stte

either r8c8 is a 7 or r79c4 contains a 7

aran

Joined: 19 Apr 2010
Posts: 70

Posted: Wed Jul 04, 2012 12:15 pm Post subject:

Code:

*-----------------------------------------------------------*
| 2 1 37 | 9 6 37 | 8 5 4 |
| 9 5 38 | 13 138 4 | 2 6 7 |
| 4 6 78 | 57 258 278 | 3 9 1 |
|-------------------+-------------------+-------------------|
| 1 2 9 | 4 7 5 | 6 3 8 |
| 38 38 4 | 6 9 1 | 7 2 5 |
| 5 7 6 | 2 38 38 | 1 4 9 |
|-------------------+-------------------+-------------------|
| 378 3489 5 | 137 123 2379 | 49 17 6 |
| 6 49 2 | 8 15 79 | 459 17 3 |
| 37 39 1 | 357 4 6 | 59 8 2 |
*-----------------------------------------------------------*

5r8c5=>AUR49r78c27=>AUR38r57c12=>AUR37r79c14=>5r9c4: =><5>r8c5

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