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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sun Nov 23, 2008 6:25 am Post subject: Puzzles by daj |
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| Danny A. Jones wrote: | I really enjoy posting puzzles for others to solve. I generate them with my puzzle generator and then go through them manually to try and find those that present a reasonable level of difficulty for manual solvers.
Of course, I sometimes miss a shortcut and someone cracks a puzzle with less effort than I'd expected. There are also times when everyone misses a technique that opens up the puzzle. Nothing's perfect! |
Now, we have a Forum for daj95376 to post his puzzles for others to enjoy!
(And, to discuss.) |
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nataraj
Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria
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| Posted: Sun Nov 23, 2008 12:12 pm Post subject: |
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Good idea, Keith!
I like Danny's puzzles a lot and I'm glad we have our own sudoku creator in residence  .
Are you going to move over all the threads from the "others" section? That'd be quite an impressive bunch to start things off ...
[Edit: The threads have been moved - keith]
Last edited by nataraj on Fri Dec 19, 2008 3:45 pm; edited 1 time in total |
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Guest
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| Posted: Sun Nov 23, 2008 2:52 pm Post subject: |
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| tlanglet wrote: |
Please bring them on Danny ..........
Ted |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sun Nov 23, 2008 5:27 pm Post subject: Guest |
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Welcome to the forum! I plan to post a more formal invitation as a Sticky soon.
Thank You for your warm reception  __ I'll do my best to provide acceptable puzzles. |
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CORUJA
Joined: 16 Jun 2007
Posts: 15
Location: BRUMADINHO - MG; BRAZIL
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| Posted: Mon Dec 01, 2008 7:32 pm Post subject: daj95376 |
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Danny,
Very happy with this new forum! I really enjoy solving your puzzles .
Coruja |
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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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| Posted: Thu Jan 15, 2009 6:49 pm Post subject: daj |
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I missed something. How do we get daj's puzzles?
Sounds interesting.
Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Jan 15, 2009 7:37 pm Post subject: Re: daj |
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| Earl wrote: | I missed something. How do we get daj's puzzles?
Sounds interesting.
Earl |
Earl,
Just hit your "Back" button and look at the index of topics. Generally, one topic = one puzzle. I've been doing way fewer Menneske and Vanhegan since Danny has published his puzzles. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu Jan 15, 2009 7:42 pm Post subject: Re: daj |
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| Earl wrote: | I missed something. How do we get daj's puzzles?
Sounds interesting.
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DAJ is a new member to this forum who has waaaaay too much time on his hands. He's been around FreeCell/Sudoku forums for awhile. Keith recognized him when he joined.
DAJ also has an old puzzle generator whose design was (hopefully) to create extremely difficult puzzles. It was moderately successful. Fortunately, the old generator could be modified to restrict which techniques were allowed when creating puzzles. This often resulted in difficult puzzles based on a limited set of solution techniques.
DAJ has been tweaking his generator and generating puzzles that he then manually examines for suitability for posting. Feedback from forum members has helped guide him in his selection process. He's always open to constructive suggestions
(Gosh, I love talking about myself in the third person.  ) |
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Thu Jan 15, 2009 9:27 pm Post subject: Re: daj |
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| daj95376 wrote: |
(Gosh, I love talking about myself in the third person. ) |
Well that aside, I like your puzzles and really admire your energy.
Thanks for your presence! |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Thu Jan 15, 2009 11:03 pm Post subject: Re: daj |
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| daj95376 wrote: |
(Gosh, I love talking about myself in the third person. ) |
And, in UPPER CASE! 
Danny, does your solver do these reversible XY-chain loops / cycles we have been talking about?
Keith |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Fri Jan 16, 2009 1:00 am Post subject: Re: daj |
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| keith wrote: | Danny, does your solver do these reversible XY-chain loops / cycles we have been talking about?
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Point me to a link please. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Fri Jan 16, 2009 7:16 am Post subject: Re: daj |
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| keith wrote: | Danny, does your solver do these reversible XY-chain loops / cycles we have been talking about?
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Keith, my solver has minimal support for loops. This is because I don't record intermediate eliminations in a chain. All secondary loop eliminations are picked up individually. If a loop causes the initial cell to be reduced from "abcdef" to "bd", then I report it.
Just to make sure there's no confusion, I pick up XY-Chains just fine.
| Code: | your loop
+----------------+----------------+----------------+
| 2 5 39 | 4679 367 3467 | 8 37 1 |
| 79a 67-9 367-9 | 1 8 2 | 39b 4 5 |
| 4 1 8 | 79 5 37 |2-39 237 6 |
+----------------+----------------+----------------+
| 59 69 2 | 3 1 8 | 7 56 4 |
| 3 8 67 | 45 67 45 | 1 9 2 |
| 57d 4 1 | 267 267 9 | 35c 3-56 8 |
+----------------+----------------+----------------+
| 8 23 5 | 26 9 36 | 4 1 7 |
| 6 79 79 | 8 4 1 | 25 25 3 |
| 1 23 4 | 257 237 357 | 6 8 9 |
+----------------+----------------+----------------+
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| Code: | my solver's output
{ 2} -9r2c1 7r2c1 5r6c1 3r6c7 9r2c7 [XY-Chain] <> 9 [r2c23]
{ 1} -5r6c1 7r6c1 9r2c1 3r2c7 5r6c7 [XY-Chain] <> 5 [r6c8]
{ 1} -3r2c7 9r2c7 7r2c1 5r6c1 3r6c7 [XY-Chain] <> 3 [r3c7]
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Danny |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sun Apr 26, 2009 8:51 pm Post subject: |
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| Effective immediately, my rating of puzzles is cancelled |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Mon Apr 27, 2009 12:06 am Post subject: |
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| daj95376 wrote: | | Effective immediately, my rating of puzzles is cancelled |
will you still have them grouped or sorted by sets?
and if so, will the set determine the techniques required?
or will the puzzles have no "hint" as to how difficult they are? |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Apr 27, 2009 12:29 am Post subject: |
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| storm_norm wrote: | | daj95376 wrote: | | Effective immediately, my rating of puzzles is cancelled |
will you still have them grouped or sorted by sets?
and if so, will the set determine the techniques required?
or will the puzzles have no "hint" as to how difficult they are? |
I've merged sets T_03 and T_04, and plan to merge in T_05 -- the last set I generated (awhile back). The puzzles will now be identified sequentially as Puzzle NR_nnn. So far, I have not committed to merging in the few remaining XY_02 puzzles, but it's still a possibility.
Since the puzzles are no longer rated, I'll no longer be going back a week and edit puzzles to include my solutions for them.
Finally, as you may have noticed, I've also trimmed back to posting just one puzzle per day. This was suggested to me a long time back, and I've finally decided to heed that suggestion. I was posting multiple puzzles per day expecting people with various levels of experience to post replies to them. That isn't happening, so there isn't any need to continue posting multiple puzzles per day. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Apr 27, 2009 12:51 am Post subject: |
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| Quote: | | I was posting multiple puzzles per day expecting people with various levels of experience to post replies to them. That isn't happening, so there isn't any need to continue posting multiple puzzles per day. |
Far be it from me to tell you how many puzzles to post. I just want to make the point that there are probably more people enjoying the puzzles than actually post replies. I personally reply to a number of puzzles, but I also do puzzles that I don't reply to because I have nothing worthwhile to say. |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Mon Apr 27, 2009 1:45 am Post subject: |
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| Quote: | | I just want to make the point that there are probably more people enjoying the puzzles than actually post replies |
just to add to that point. one of the biggest points of discussion in the forum is how often (or not) the VH puzzles are published.
Danny,
your "VH" type puzzles are/should be filling in the gaps in time between VH's nicely.
especially for the ones who want more practice with VH type puzzles. all someone has to do is pull up your VH puzzles and get all the practice needed. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Apr 27, 2009 3:42 pm Post subject: |
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| Danny, if I may add one more thought, I hope you will rethink the cancellation of the ratings. I don't think they need to be complex, like assigning a group of moves to a given level, but it would be helpful if they were graded simply, like 1, 2 and 3. I personally pass up the VH but do the VH+ and Adv., so there's an example of how they help me, and perhaps others. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Apr 27, 2009 4:33 pm Post subject: |
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Okay, I'll continue to post and mark a VH puzzle daily. These puzzles will not have XYZ-Wing, though.
I'll then post a second puzzle daily that has no rating. I will keep the XY_nn set designator, but all remaining puzzles will fall into the the NR_nnn category. If someone gets stuck, then they can post a PM and ask others for comments. Discussions (see first post in this thread) have been seriously lacking in this sub-forum, and not posting ratings is one way that I'd hoped to encourage them -- especially among those who had been silently working VH-only puzzles.
We'll see how this works out. |
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