dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Vanhegan fiendish September 6, 2012

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other puzzles
View previous topic :: View next topic  
Author Message
arkietech



Joined: 31 Jul 2008
Posts: 1686
Location: Northwest Arkansas USA

PostPosted: Fri Sep 07, 2012 5:26 am    Post subject: Vanhegan fiendish September 6, 2012 Reply with quote

Code:

 *-----------*
 |...|.9.|.83|
 |9..|15.|.2.|
 |...|2.7|...|
 |---+---+---|
 |.98|...|.4.|
 |5..|6.2|..9|
 |.1.|...|65.|
 |---+---+---|
 |...|3.5|...|
 |.3.|.19|..4|
 |17.|.6.|...|
 *-----------*
 

Play/Print this puzzle online
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 639
Location: Dar es Salaam Tanzania

PostPosted: Fri Sep 07, 2012 7:02 am    Post subject: Reply with quote

Code after Basics
Code:

+------------+----------+--------------+
| 7   2  1   | 4 9   6  | 5    8   3   |
| 9   68 -346 | 1 5   *38 | 47   2   67  |
| *348 5  346 | 2 38  7  | 149  19  16  |
+------------+----------+--------------+
| 6   9  8   | 5 37  1  | 237  4   27  |
| 5   4  37  | 6 378 2  | 1378 137 9   |
| *23  1  237 | 9 4   *38 | 6    5   78  |
+------------+----------+--------------+
| 48  68 469 | 3 2   5  | 1789 179 178 |
| 28  3  5   | 7 1   9  | 28   6   4   |
| 1   7  29  | 8 6   4  | 2 39  39  5   |
+------------+----------+--------------+
Skyscraper on 3 in r6c16; r2c3<>3.
Back to top
View user's profile Send private message AIM Address
arkietech



Joined: 31 Jul 2008
Posts: 1686
Location: Northwest Arkansas USA

PostPosted: Fri Sep 07, 2012 12:17 pm    Post subject: Reply with quote

Another method with same result:
Code:

 *-----------------------------------------------------------*
 | 7     2     1     | 4     9     6     | 5     8     3     |
 | 9     68    46-3  | 1     5    a38    | 47    2     67    |
 | 348   5     346   | 2     38    7     | 149   19    16    |
 |-------------------+-------------------+-------------------|
 | 6     9     8     | 5     37    1     | 37    4     2     |
 | 5     4    d37    | 6     378   2     | 1378  137   9     |
 |c23    1    c237   | 9     4    b38    | 6     5     78    |
 |-------------------+-------------------+-------------------|
 | 48    68    469   | 3     2     5     | 1789  179   178   |
 | 28    3     5     | 7     1     9     | 28    6     4     |
 | 1     7     29    | 8     6     4     | 239   39    5     |
 *-----------------------------------------------------------*
Empty Rectangle (ER)
3r2c6=r6c6-r6c13=3r5c3 => -3r2c3; stte

if r2c6 is not a 3 then r5c3 is a 3

Play/Print this puzzle online
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5063
Location: Rochester, NY, USA

PostPosted: Fri Sep 07, 2012 3:58 pm    Post subject: Reply with quote

arkietech wrote:
Another method with same result:
Code:

 *-----------------------------------------------------------*
 | 7     2     1     | 4     9     6     | 5     8     3     |
 | 9     68    46-3  | 1     5    a38    | 47    2     67    |
 | 348   5     346   | 2     38    7     | 149   19    16    |
 |-------------------+-------------------+-------------------|
 | 6     9     8     | 5     37    1     | 37    4     2     |
 | 5     4    d37    | 6     378   2     | 1378  137   9     |
 |c23    1    c237   | 9     4    b38    | 6     5     78    |
 |-------------------+-------------------+-------------------|
 | 48    68    469   | 3     2     5     | 1789  179   178   |
 | 28    3     5     | 7     1     9     | 28    6     4     |
 | 1     7     29    | 8     6     4     | 239   39    5     |
 *-----------------------------------------------------------*
Empty Rectangle (ER)
3r2c6=r6c6-r6c13=3r5c3 => -3r2c3; stte

if r2c6 is not a 3 then r5c3 is a 3

Play/Print this puzzle online


Two more possibilities.

1) XY-Wing (238), pivot r6c1, flightless, with transport from r8c1 to r2c2; r2c6<>8.

2) M-Wing (38) in r2c6 and r3c1; pincer 3; r6c6<>3.
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 639
Location: Dar es Salaam Tanzania

PostPosted: Fri Sep 07, 2012 5:58 pm    Post subject: Vanhagen fiendish September 6, 2012 Reply with quote

arkietech
Thanks, you have reminded me of the ER's. I have almost stoped looking for them because they occur rarely. However they are good and fun. There are two ER's in this puzzle based on 3's, the one in BOX 2 removes the 3 in r6c6 and the other in BOX 4 removes the 3 in r2c3 Very Happy.
Back to top
View user's profile Send private message AIM Address
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other puzzles All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group