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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Tue Jun 12, 2007 9:38 pm Post subject: Hard puzzles, chains are not required. Rarely, ALS is. |
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These puzzles are generated using Ruud's SudokuCue. (Occasionally some other.)
The order and selection of the methods "allowed" varies, as may the symmetry. I mention big fish because I like them and I'll warn of Sue de coq when required.
I have all the "easy stuff" turned on and then these: UR types 1-4,
x-wing, finned-x, skyscraper (covers sashimi-x), xy wing, xyz wing,
swordfish, finned swordfish, sashimi swordfish, jellyfish, finned jelly,
sashimi jelly, ER (empty rectangle, covers regular turbot),
two string kite (the third form of turbot, skyscraper is the second),
BUG+1 and remote pairs.
Be warned that if I mention a big fish it is likely that you will not find it as solving order may well render it pointless or missing.
Remote pairs is an easy chain that I don't want to use but I do need to know when it may come in early and "shortcut" a puzzle.
Same for URs, but I do include them even when needed.
For solving I myself use anything I spot, including some short chains.
Coloring usually covers fish so feel free, I don't know it or use it.
I don't mind others posting here, in fact it is welcome. You are free to post puzzles requiring methods I don't use, but warn people please!
Finned swordfish, UR but not required.
Code: | . 4 8|1 . 9|5 7 .
9 . .|. 7 .|. . 1
. . .|4 5 3|. . .
-----+-----+-----
. . 3|. . .|2 . .
1 . .|. . .|. . 7
5 2 .|. . .|. 6 3
-----+-----+-----
. 8 .|2 . 4|. 5 .
. . 9|. . .|6 . .
. . .|. 1 .|. . . |
Last edited by wapati on Wed Jun 25, 2008 11:56 am; edited 5 times in total |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Wed Jun 13, 2007 1:06 am Post subject: |
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No BIG fish required, some work though!
Code: | 7 . .|. . 8|4 . 3
8 . 3|. . .|. . .
. 1 .|7 . .|. . 2
-----+-----+-----
. 6 .|. 7 .|. 8 .
2 . .|1 . 6|. . 4
. 9 .|. 5 .|. 7 .
-----+-----+-----
6 . .|. . 4|. 2 .
. . .|. . .|9 . 7
9 . 1|2 . .|. . 8 |
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| north55
| Joined: 02 Dec 2006 | Posts: 43 | : | | Items |
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Posted: Wed Jun 13, 2007 1:42 am Post subject: |
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I have seen your posts elsewhere, I like your puzzles.
Welcome! |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Wed Jun 13, 2007 8:00 pm Post subject: |
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SE rates this a 7.6.
It lacks big fish but has lots of small ones!
Code: | . . .|. . .|. . .
. 1 .|. . .|. 6 .
. . 9|1 . 3|8 . .
-----+-----+-----
7 . .|9 . 6|. . 1
1 . 2|. . .|4 . 6
. 6 3|. 4 .|7 8 .
-----+-----+-----
. . 7|5 . 8|6 . .
. . 1|7 . 9|2 . .
. 8 .|. . .|. 7 . |
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| daj95376
| Joined: 05 Feb 2006 | Posts: 349 | : | | Items |
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Posted: Thu Jun 14, 2007 12:08 am Post subject: |
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wapati wrote: | SE rates this a 7.6.
It lacks big fish but has lots of small ones!
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XY-Wings, XYZ-Wing, three X-Wings, finned X-Wing, Sashimi X-Wing, finned Jellyfish, 2-String Kite, Multiple Colors, and the usual collection of basic techniques. A nice assortment! |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Fri Jun 15, 2007 11:28 pm Post subject: |
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Not too hard by SE, quite hard by SQ. I see one finned sword, and many smaller baits.
Code: | . . 7|. . .|6 . .
6 1 .|. . .|. 4 7
. 2 4|. . .|9 5 .
-----+-----+-----
. 9 .|. . .|. 6 .
. . .|7 . 3|. . .
7 4 .|. 8 .|. 3 5
-----+-----+-----
1 . .|. 6 .|. . 4
. 8 6|. 1 .|5 7 .
. . .|8 4 5|. . .
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Sat Jun 16, 2007 11:58 pm Post subject: |
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SQ rates this 4500 with my settings but SE only a 6.6, because it sees no chains. Pretty fun though!
Code: | 7 . .|. . 8|4 . 3
8 . 3|. . .|. . .
. 1 .|7 . .|. . 2
-----+-----+-----
. 6 .|. 7 .|. 8 .
2 . .|1 . 6|. . 4
. 9 .|. 5 .|. 7 .
-----+-----+-----
6 . .|. . 4|. 2 .
. . .|. . .|9 . 7
9 . 1|2 . .|. . 8 |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Sun Jun 17, 2007 6:15 pm Post subject: |
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This is full of big fish. Plain and finned swords and a Jellyfish
Code: | 7 . .|4 . .|. . 9
. . .|. . 6|. . .
9 . 1|8 . .|2 4 .
-----+-----+-----
4 . .|. 6 .|5 . .
. . 5|2 . 8|6 . .
. . 9|. 5 .|. . 2
-----+-----+-----
. 3 4|. . 1|8 . 7
. . .|5 . .|. . .
8 . .|. . 7|. . 5
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Mon Jun 18, 2007 2:39 am Post subject: |
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This is tough. Not too hard, pretty darn difficult.
Code: | . . 7|. . .|. . 8
4 5 .|. . .|. 1 9
2 . 1|. 8 9|. . .
-----+-----+-----
. . 3|. . 6|. . .
. . .|4 . 7|. . .
. . .|8 . .|2 . .
-----+-----+-----
. . .|2 7 .|8 . 4
7 2 .|. . .|. 9 1
6 . .|. . .|7 . . |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Mon Jun 18, 2007 3:54 pm Post subject: |
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Swordfish abound!
Code: | . . 9|. . .|. 6 .
. 2 .|. . 4|. . 8
. 4 .|5 . .|1 . .
-----+-----+-----
. 9 .|7 . 3|. . 2
. . .|4 9 2|. . .
2 . .|6 . 5|. 1 .
-----+-----+-----
. . 2|. . 6|. 8 .
4 . .|1 . .|. 2 .
. 5 .|. . .|4 . . |
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| Ruud Site Admin
| Joined: 17 Sep 2005 | Posts: 708 | : | Location: Netherlands | Items |
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Posted: Mon Jun 18, 2007 7:26 pm Post subject: |
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Please let the lack of responses not keep you from posting these puzzles. The quality is great. So far, I've solved each of your puzzles by spotting a single AIC that bypasses all the fish. Am I cheating by doing this? _________________ Meet me at sudocue.net |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Tue Jun 19, 2007 3:36 am Post subject: |
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Ruud wrote: | Please let the lack of responses not keep you from posting these puzzles. The quality is great. So far, I've solved each of your puzzles by spotting a single AIC that bypasses all the fish. Am I cheating by doing this? |
I appreciate any feedback, thanks Ruud!
BTW, almost all are generated by your Suduko Cue, which I usually abreviate as SQ. I also generate with SE, for variety, although its weakness on fins is a big handicap for me.
I was quite interested when Tarek and Ravel (and a few others) posted solutions that involved a single chain. This is interesting data as well.
I'll look up AIC and for my own interest and as for your question as it being cheating...well, I have no objection to any method except guessing (T&E).
In that I mean people can use what they prefer, and I prefer avoiding coloring, chains and several other methods I don't know.
I have two questions for you.
Did this method solve the puzzle quickly, in the time sense?
Did you locate a backdoor and then look for eliminations (or placings) in that cell? |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Tue Jun 19, 2007 3:22 pm Post subject: |
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There is a swordfish, and a finned jellyfish, and various small fry.
Code: |
2 . 5|4 . .|. . .
. 6 .|. 2 1|. . 7
. 1 4|5 . .|. . .
-----+-----+-----
4 . .|. . 2|. . .
7 9 .|. . .|. 8 6
. . .|7 . .|. . 4
-----+-----+-----
. . .|. . 4|6 1 .
5 . .|6 1 .|. 7 .
. . .|. . 8|2 . 5
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| Mauricio
| Joined: 22 Mar 2006 | Posts: 21 | : | | Items |
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Posted: Wed Jun 20, 2007 2:05 am Post subject: |
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I'd think these puzzles are interesting. The only fish needed is a sashimi jellyfish
Code: |
1 . .|. . .|. 6 .
. . .|. . 8|. . .
. . .|. . 5|. . 2
-----+-----+-----
. . 3|7 . .|. 1 .
. 5 .|. . .|. 7 .
. 9 .|. . 2|8 . .
-----+-----+-----
9 . .|6 . .|. . .
. . .|1 . .|. . .
. 8 .|. . .|. . 5 |
A twin Code: |
1 . .|. . .|. 6 .
. . .|. . 8|. . .
. . .|. . 5|. . 2
-----+-----+-----
. . 3|7 . .|. 1 .
. 2 .|. . .|. 7 .
. 9 .|. . 2|8 . .
-----+-----+-----
9 . .|6 . .|. . .
. . .|1 . .|. . .
. 8 .|. . .|. . 5 |
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| wapati
| Joined: 12 Jun 2007 | Posts: 622 | : | Location: Canada | Items |
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Posted: Wed Jun 20, 2007 5:02 pm Post subject: |
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Nice BIG fish Mauricio!
This one has lots of small fish, LOTS.
Code: | 4 . .|. . .|. 1 8
. 9 .|. 4 .|. . .
. . 6|9 . .|. 4 .
-----+-----+-----
. . .|. 5 6|8 . .
1 . .|4 . 8|. . 3
. . 8|2 1 .|. . .
-----+-----+-----
. 5 .|. . 7|6 . .
. . .|. 3 .|. 5 .
7 3 .|. . .|. . 9 |
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