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 Cinco de Mayo

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



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Wed May 05, 2010 10:11 pm    Post subject: Vanhegan Fiendish Cinco de Mayo Reply with quote

An interesting puzzle if you ignore the obvious type 1 UR.


Code:

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

Play this puzzle online at the Daily Sudoku site


Ted

Edited to post correct status; clues only, not after basics.


Last edited by tlanglet on Thu May 06, 2010 2:32 am; edited 1 time in total
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Thu May 06, 2010 12:33 am    Post subject: Reply with quote

Quote:
An interesting puzzle if you ignore the obvious type 1 UR.

Easy for you to say. Exclamation I ignored it because I didn't have one. Embarassed

Quote:
M-Wing (38 ) with four-cell pincer transport, leaving a BUG+1
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Thu May 06, 2010 2:33 am    Post subject: Reply with quote

Marty R. wrote:
Quote:
An interesting puzzle if you ignore the obvious type 1 UR.

Easy for you to say. Exclamation I ignored it because I didn't have one. Embarassed

Quote:
M-Wing (38 ) with four-cell pincer transport, leaving a BUG+1


Marty,

Very sorry! I was running short on time and posted the code after basics, not the original clues code.

Ted
Back to top
View user's profile Send private message
arkietech



Joined: 31 Jul 2008
Posts: 1832
Location: Northwest Arkansas USA

PostPosted: Thu May 06, 2010 2:36 am    Post subject: Reply with quote

Ignoring the ur 17 in B89 I found an xy-chain that solves the puzzle:
Quote:
(3=2)r4c2-(2=3)r7c2-(3=2)r7c1-(2=3)r2c1-(3=4)r2c8-(4=7)r5c8-(7=8)r6c8-(8=3)r6c6; r4c46,r6c3<>3
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Thu May 06, 2010 3:35 am    Post subject: Reply with quote

The type 1 UR solves the puzzle in one step. After ignoring it, I found few VH/VH+ steps; I specifically did not see the move posted by Marty.

I used my new tool, the naked pair for a one step solution.

Quote:
ANP(36)r6c34 = (7)r6c4 - (7=5)r5c5 - (5=4)r5c7 - (4=2)r2c7 - r2c1 = r7c1 - r7c2 = (2-3)r4c2 = (3)r6c3; r6c6<>3

Ted
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Thu May 06, 2010 3:58 am    Post subject: Reply with quote

Quote:
The type 1 UR solves the puzzle in one step. After ignoring it, I found few VH/VH+ steps; I specifically did not see the move posted by Marty.

If you still have your post-basics grid and want to post it, I'll see if my move is there. But don't go to a lot of trouble, it's not a big deal.
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Thu May 06, 2010 1:23 pm    Post subject: Reply with quote

Marty R. wrote:
Quote:
The type 1 UR solves the puzzle in one step. After ignoring it, I found few VH/VH+ steps; I specifically did not see the move posted by Marty.

If you still have your post-basics grid and want to post it, I'll see if my move is there. But don't go to a lot of trouble, it's not a big deal.


Here it is Marty.

Code:

+-----------+-------------+---------+
| 5  7  238 | 4   23  6   | 28 1  9 |
| 23 6  1   | 9   8   7   | 24 34 5 |
| 9  4  238 | 1   23  5   | 6  38 7 |
+-----------+-------------+---------+
| 7  23 4   | 235 9   238 | 58 6  1 |
| 8  9  26  | 26  57  1   | 45 47 3 |
| 1  5  36  | 367 4   38  | 9  78 2 |
+-----------+-------------+---------+
| 23 23 57  | 8   157 4   | 17 9  6 |
| 4  1  57  | 57  6   9   | 3  2  8 |
| 6  8  9   | 23  17  23  | 17 5  4 |
+-----------+-------------+---------+

Play this puzzle online at the Daily Sudoku site

Ted
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Thu May 06, 2010 4:02 pm    Post subject: Reply with quote

tlanglet wrote:
Marty R. wrote:
Quote:
The type 1 UR solves the puzzle in one step. After ignoring it, I found few VH/VH+ steps; I specifically did not see the move posted by Marty.

If you still have your post-basics grid and want to post it, I'll see if my move is there. But don't go to a lot of trouble, it's not a big deal.


Here it is Marty.

Code:

+-----------+-------------+---------+
| 5  7  238 | 4   23  6   | 28 1  9 |
| 23 6  1   | 9   8   7   | 24 34 5 |
| 9  4  238 | 1   23  5   | 6  38 7 |
+-----------+-------------+---------+
| 7  23 4   | 235 9   238 | 58 6  1 |
| 8  9  26  | 26  57  1   | 45 47 3 |
| 1  5  36  | 367 4   38  | 9  78 2 |
+-----------+-------------+---------+
| 23 23 57  | 8   157 4   | 17 9  6 |
| 4  1  57  | 57  6   9   | 3  2  8 |
| 6  8  9   | 23  17  23  | 17 5  4 |
+-----------+-------------+---------+

Play this puzzle online at the Daily Sudoku site

Ted

Ted, the 38s in boxes 35 are connected by the 8s. Extend the 3 from r3c8 to r2c8 to establish the pincers, then transport the 3 from r2c8 to r7c1 via r2c1. However, I had a 39 in r7c8, which is obviously wrong if I had that 23 pair in r7. I have no idea of how I got there.
Back to top
View user's profile Send private message
keith



Joined: 19 Sep 2005
Posts: 3340
Location: near Detroit, Michigan, USA

PostPosted: Thu May 06, 2010 5:22 pm    Post subject: Reply with quote

I found it sufficient to work on 2 only:
W 2-3 in R1C3
W 2-3 in R4C4
XY with transport -258 in R4C2

I think you can substitute an XY and an XYZ wing for the first two W's.

Keith
Back to top
View user's profile Send private message
nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

PostPosted: Thu May 06, 2010 8:04 pm    Post subject: Reply with quote

I resisted the UR temptation as per Ted's advice, found an xy-wing (23-28-38 ) in boxes 2 and 3, which took out the 3 in r3c5/2 in r3c3. The resulting w-wing (r3c3,r6c6 via col 8 ) solved the puzzle.
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Marty R.



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

PostPosted: Thu May 06, 2010 9:52 pm    Post subject: Reply with quote

Quote:
I specifically did not see the move posted by Marty.


Let's try this again. I erred in prior posts, both in saying that I had no Type 1 and in describing my M-Wing. The 38s in boxes 35 are linked by 8s and the 3 in r3c8 is extended to r2c8 to form pincers at a and d. Extend one abc and the other def and the new pincers cf take out the 3 from r7c2. Sorry about any confusion I created.

Code:
+-------------+-----------+------------+
| 5   7   238 | 4   23  6   | 28 1   9 |
| 23b 6   1   | 9   8   7   | 24 34a 5 |
| 9   4   238 | 1   23  5   | 6  38  7 |
+-------------+-------------+----------+
| 7   23f 4   | 235 9   238 | 58 6   1 |
| 8   9   26  | 26  57  1   | 45 47  3 |
| 1   5   36e | 367 4   38d | 9  78  2 |
+-------------+-------------+----------+
| 23c 2-3 57  | 8   157 4   | 17 9   6 |
| 4   1   57  | 57  6   9   | 3  2   8 |
| 6   8   9   | 23  17  23  | 17 5   4 |
+-------------+-------------+----------+
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