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 

VH+ 030223

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



Joined: 06 May 2017
Posts: 570

PostPosted: Thu Mar 02, 2023 7:14 pm    Post subject: VH+ 030223 Reply with quote

Hello all, enjoy the puzzle.

Code:

+-------+-------+-------+
| . 5 . | 2 . 7 | . 3 . |
| 7 . 4 | . . . | 2 . 8 |
| . 2 . | . . . | . 4 . |
+-------+-------+-------+
| . . 1 | 9 7 3 | 5 . . |
| . . . | . . . | . . . |
| . . 2 | . . . | 9 . . |
+-------+-------+-------+
| 5 . . | . 1 . | . . 7 |
| 2 . . | 8 . 6 | . . 4 |
| . 3 . | . 5 . | . 6 . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

cheers...immp
Back to top
View user's profile Send private message
dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Sat Mar 04, 2023 6:55 pm    Post subject: Reply with quote

Thanks for the puzzle immp!

After basics:
Code:
+------------------+---------------+---------------+
| g189   5    f89* |  2    4   7   |  6   3   a1*9 |
|  7     169   4   |  35   369 159 |  2   19   8   |
| n169   2     3   | m16   689 189 |  7   4    5   |
+------------------+---------------+---------------+
| h468   468   1   |  9    7   3   |  5   28   26  |
|  3689  6789  5   | L16   2   18  |  4   78   36  |
| i368   678   2   |  45  k68  45  |  9   178 j136 |
+------------------+---------------+---------------+
|  5     489   6   |  34   1   249 |  38  29   7   |
|  2     19    7   |  8    39  6   |  13  5    4   |
| e14*89 3    c89  |  7    5   249 | d18  6   b29  |
+------------------+---------------+---------------+

Then I used the following: (1*-9)r1c9=r9c9-(9=8)r9c3-[(8=1)r9c7-(189=4*)r9c1 -(8=9*)r1c3]-(1*9=8)r1c1-(4*8=6)r4c1-(68=3)r6c1-(1*3=6)r6c9-r6c5=r5c4-(6=1)r3c4-(19*=6)r3c1 contradiction (i.e. 6r34c1) => r1c9 <> 1; stte.
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Wed Mar 08, 2023 4:52 pm    Post subject: VH + 030223 Reply with quote

Two steps
Code:

+---------------------+------------------+-------------------+
|a189      5       89 | 2     4      7   | 6     3      b19  |
| 7        169     4  | 35    369    159 | 2     19      8   |
| 169      2       3  | 16    689    189 | 7     4       5   |
+---------------------+------------------+-------------------+
| 468     468      1  | 9     7      3   | 5     28      26  |
| 3689    6789     5  | 16    2      18  | 4     78      36  |
| 368     678      2  | 45    68     45  | 9     178     136 |
+---------------------+------------------+-------------------+
| 5       489      6  | 34    1      249 | 38    29      7   |
| 2       19       7  | 8     39     6   | 13    5       4   |
| 489-1   3       c89 | 7     5      249 |c18    6      c29  |
+---------------------+------------------+-------------------+

Step 1: (1)r1c1 - (1-9)r1c9 = (981)r9c937 => - 1r9c1
Code:

+------------------+-----------------+------------------+
| 189    5      89 | 2     4     7   | 6    3      d19  |
| 7      6      4  | 5     3    b19  | 2   c19      8   |
| 19     2      3  | 16    68    189 | 7    4       5   |
+------------------+-----------------+------------------+
| 46     48     1  | 9     7     3   | 5    28      26  |
| 369   a789    5  | 16    2    a18  | 4   a78      36  |
| 36     78     2  | 4     68    5   | 9    178     136 |
+------------------+-----------------+------------------+
| 5      4-9    6  | 3     1     24  | 8    29      7   |
| 2      1      7  | 8     9     6   | 3    5       4   |
|f489    3     f89 | 7     5     24  | 1    6      e29  |
+------------------+-----------------+------------------+

Step 2: (9=7|81)r5c286 - (1=9)r2c6 - r2c8 = r1c9 - r9c9 = (9)r9c13 => - 9r7c2; stte
Back to top
View user's profile Send private message AIM Address
glesco



Joined: 12 May 2022
Posts: 35

PostPosted: Fri Mar 10, 2023 7:57 pm    Post subject: Reply with quote

Several Steps:
I) X-wing removing 9s from r1c1, r9c1, r9c6
II) xy-chain with anchors at r8c2 & r9c7 removing 1s from r9c1, r8c7
III) Finned x-wing removing 1 from r5c9
IV) W-wing removing 3s from r5c1, r6c9
V) xy-chain with anchors at r5c8 & r6c2 removing 7s from r5c2, r6c8
Back to top
View user's profile Send private message
immpy



Joined: 06 May 2017
Posts: 570

PostPosted: Sat Mar 11, 2023 10:34 pm    Post subject: Reply with quote

Nice path glesco. I don't mind using multiple steps to solve; the one-step solutions are impressive by those that go that route.

cheers...immp
Back to top
View user's profile Send private message
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