Author |
Message |
Topic: Aug 28 VH |
kragzy
Replies: 2
Views: 18235
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Forum: Daily Sudoku puzzles Posted: Tue Aug 30, 2011 12:15 am Subject: Aug 28 VH |
Also a 679 XY wing pivoted in R3C9 eliminating 7 in R1C2 solves it. |
Topic: 30 June VH |
kragzy
Replies: 6
Views: 28066
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Forum: Daily Sudoku puzzles Posted: Wed Jun 29, 2011 11:11 pm Subject: 30 June VH |
I lost track of the number of XY wings I used to 'clean up' this puzzle before finding the one that cracked it (a 134 pivoted in R6C6). In terms of VH techniques, this was about a 5 stepper for me. I' ... |
Topic: Jun 21 VH |
kragzy
Replies: 6
Views: 40334
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Forum: Daily Sudoku puzzles Posted: Wed Jun 22, 2011 1:29 am Subject: Jun 21 VH |
Ahhhhhhhhhhhhhhhhhhhhhhh.
Thanks Marty |
Topic: Jun 21 VH |
kragzy
Replies: 6
Views: 40334
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Forum: Daily Sudoku puzzles Posted: Wed Jun 22, 2011 12:51 am Subject: Jun 21 VH |
Sorry, I'll try copying the grid again.
+--------------+----------+------------------+
| 17 37 6 | 89 24 5 | 1349 1237 134789 |
| 157 9 8 | 6 24 3 | 145 127 147 |
| 2 4 3 ... |
Topic: Jun 21 VH |
kragzy
Replies: 6
Views: 40334
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Forum: Daily Sudoku puzzles Posted: Wed Jun 22, 2011 12:51 am Subject: Jun 21 VH |
I must be missing something here. I saw the first two XY wings mentioned by Clement, which gave me the following grid.
[code]
+--------------+----------+------------------+
| 17 37 6 | 89 24 ... |
Topic: May 10 VH |
kragzy
Replies: 15
Views: 76707
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Forum: Daily Sudoku puzzles Posted: Thu May 12, 2011 11:07 pm Subject: May 10 VH |
I certainly wasn't complaining. I enjoy a challenging puzzle. It was just that on this occasion, I thought I was blind to the obvious (which often happens!). As it turned out, I was not alone. Phew - ... |
Topic: May 10 VH |
kragzy
Replies: 15
Views: 76707
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Forum: Daily Sudoku puzzles Posted: Thu May 12, 2011 4:38 am Subject: May 10 VH |
I am relieved to read the comments above! I've just solved this one and thought I was making an absolute dog's breakfast of it. As it happened I went down the X wing, XYZ wing, XY wing path - but is w ... |
Topic: Pi Day Hard |
kragzy
Replies: 2
Views: 21432
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Forum: Daily Sudoku puzzles Posted: Mon Mar 14, 2011 10:10 pm Subject: Pi Day Hard |
The same naked triple occurs in Box 2 - with the same result. |
Topic: Feb 21 VH |
kragzy
Replies: 3
Views: 20494
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Forum: Daily Sudoku puzzles Posted: Sun Feb 20, 2011 10:55 pm Subject: Feb 21 VH |
A five minute puzzle that almost solved itself. Very few unsolved cells after basics, needing a a 246 XY wing to clinch it. |
Topic: Nov 23 VH |
kragzy
Replies: 13
Views: 56464
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Forum: Daily Sudoku puzzles Posted: Tue Nov 23, 2010 1:20 am Subject: Nov 23 VH |
Two steps for me: 258 XYZ wing centred on R8C3 which opens up a 578 XY wing centred on R9C3. |
Topic: Nov 16 VH |
kragzy
Replies: 4
Views: 22325
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Forum: Daily Sudoku puzzles Posted: Mon Nov 15, 2010 10:17 pm Subject: Nov 16 VH |
If you start in the top left corner on your search for XY wings, you'll solve it in a flash. |
Topic: Oct 6 VH |
kragzy
Replies: 6
Views: 27843
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Forum: Daily Sudoku puzzles Posted: Tue Oct 05, 2010 11:05 pm Subject: Oct 6 VH |
Also a 468 XY wing centred on R1C4 provides a solution. Since after basics this puzzle comprises only 1s, 4s, 6s, and 8s, I suspect that there are several solutions. I'll leave it to others to find th ... |
Topic: Jul 28 VH |
kragzy
Replies: 6
Views: 33166
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Forum: Daily Sudoku puzzles Posted: Wed Jul 28, 2010 11:39 pm Subject: Jul 28 VH |
The puzzle for a particular day becomes available according to local time. The time stamps are GMT, I think (or is that called UTC these days?).
Clement, in Tanzania, must do the puzzle shortly aft ... |
Topic: Jul 18 VH |
kragzy
Replies: 10
Views: 43656
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Forum: Daily Sudoku puzzles Posted: Tue Jul 20, 2010 2:27 am Subject: Jul 18 VH |
I just did this puzzle (a little late) and went to the forum expecting to see complaints about how easy it was.
Looking at Keith's 'after basics' grid, there is a one step 158 XY wing pivoted on r9 ... |
Topic: June 21 VH |
kragzy
Replies: 17
Views: 77393
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Forum: Daily Sudoku puzzles Posted: Mon Jun 21, 2010 12:21 am Subject: June 21 VH |
The shortest day on this side of the globe, and the longest puzzle, for me at least. Look carefully for hidden pairs in this messy puzzle. I missed one and wasted at least 30 minutes searching for 'ad ... |
Topic: Feb 16 VH |
kragzy
Replies: 12
Views: 55420
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Forum: Daily Sudoku puzzles Posted: Wed Feb 17, 2010 1:28 am Subject: Feb 16 VH |
Thanks Marty. The other mistake I made was saying that R6C3 becomes the pincer. It's actually the pivot. Not the computer, not my typing, just a fuzzy brain (smiley intended!) |
Topic: Feb 16 VH |
kragzy
Replies: 12
Views: 55420
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Forum: Daily Sudoku puzzles Posted: Wed Feb 17, 2010 12:04 am Subject: Feb 16 VH |
That smiley should be '8'. Don't know how that happened; must be the computer, couldn't possibly be my typing skills! |
Topic: Feb 16 VH |
kragzy
Replies: 12
Views: 55420
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Forum: Daily Sudoku puzzles Posted: Wed Feb 17, 2010 12:00 am Subject: Feb 16 VH |
Are you referring to:
r4c3 (A), r4c5 (*), r6c3 (B), r6c6 (C)?
Must the XY Wing (679) removes the common digit '7' from r4c5?
Hi Ema,
You're correct but you're not quite there yet. There i ... |
Topic: Feb 16 VH |
kragzy
Replies: 12
Views: 55420
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Forum: Daily Sudoku puzzles Posted: Mon Feb 15, 2010 11:14 pm Subject: Feb 16 VH |
And there's a good ol' XY wing (679) for those of us who, for no particular reason, prefer to avoid uniqueness solutions. |
Topic: Feb 14 VH |
kragzy
Replies: 12
Views: 47142
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Forum: Daily Sudoku puzzles Posted: Mon Feb 15, 2010 3:33 am Subject: Feb 14 VH |
Thanks Wendy. |
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