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Author Topic: Buurtools  (Read 1540 times)
Johan Heyns
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« on: March 20, 2009, 02:09:18 PM »

What is the longest a puzzle have run on Burrtools?

I'm busy with a Cutler design and this this has now been running for almost 24 hour with no end in sight!!!

Any suggestions?
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Canuck
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« Reply #1 on: March 20, 2009, 03:34:02 PM »

Maybe PM RKB...can you modify/change the parameters somewhat to reduce the solve time?
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Johan Heyns
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« Reply #2 on: March 20, 2009, 03:40:33 PM »

Don't know.  It is an unpublished design so no other info is available.  I'll let it run and see what happens.
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cubefan
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« Reply #3 on: March 20, 2009, 03:40:59 PM »

hello Johan

I think the reason for the long time is: you are using buurtools  Huh?
and we all take burrtool   Cheesy

happy puzzling

Utahfan
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Canuck
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« Reply #4 on: March 20, 2009, 03:42:45 PM »

hello Johan

I think the reason for the long time is: you are using buurtools  Huh?
and we all take burrtool   Cheesy

happy puzzling

Utahfan


I agree that might have something to do with the long solve time Grin
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RKB
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« Reply #5 on: March 21, 2009, 03:22:32 PM »

Too bad... BurrTools is working anticlockwise on the southern hemisphere.
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rolly_wood
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« Reply #6 on: March 21, 2009, 04:27:35 PM »

Too bad... BurrTools is working anticlockwise on the southern hemisphere.
Principle of causality does not hold. You must start from the solution you are looking for... and go back

Off topic: recently I learnt that the tale of the vortex in the sink is a hoax  Huh? http://en.wikipedia.org/wiki/Coriolis_effect#Corrections_to_common_misconceptions_about_the_Coriolis_effect
Johan and Chinny: which side rotates your toilet's water?  I had been just once in the southern hemisphere but I forgot doing the experiment...

kidding Johan: I have no answer to your question
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« Reply #7 on: March 21, 2009, 04:46:16 PM »

Ou toppie, can you give us an update on this yet....
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Jack
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« Reply #8 on: March 21, 2009, 06:24:25 PM »

What is the longest a puzzle have run on Burrtools?

I'm busy with a Cutler design and this this has now been running for almost 24 hour with no end in sight!!!

Any suggestions?
Longer than a day is not exceptional; you´re far from beating me. Numbers tend to be large when playing around with 18 piece burrs.
Suggestions? Have a drink and a good night rest. What´s a day at a lifetime  Smiley

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Chinnomotto
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« Reply #9 on: March 21, 2009, 09:14:33 PM »

Roly,
Water always spins clockwise, same as we drive on the left side of the road
And every normal person uses metric measurements
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Johan Heyns
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« Reply #10 on: March 22, 2009, 02:17:40 AM »

I stopped it yesterday sometime, but it is now on 1.5 days with 2.2 months predicted left.  It is a six piece burr in a frame, but due to the shapes, the end result is a 20x20x20 block with only the outside fixed.  The complete internal is undefined.

End result attached what it should look like.

[attachment deleted by admin]
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Jack
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« Reply #11 on: March 22, 2009, 06:59:35 AM »

I stopped it yesterday sometime, but it is now on 1.5 days with 2.2 months predicted left.  It is a six piece burr in a frame, but due to the shapes, the end result is a 20x20x20 block with only the outside fixed.  The complete internal is undefined.

End result attached what it should look like.
Hi Johan,
it certainly looks very good. I'm not sure what you mean by stating "The complete internal is undefined". Don't you know the shape of the 6 pieces of the burr inside?
The program shouldn't be running that long on 6 pieces and a frame.
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RKB
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« Reply #12 on: March 22, 2009, 01:09:20 PM »

OK, I had a look at the BurrTools file and it took me only a few moments to find out what was wrong... Unfortunately I can't test it myself since BurrTools keeps aborting on my PC and that problem has to be solved first.

Now for Johan's problem (and I only post it here because it is an error that's often made by BurrTools users):

Since there are some 'half notches' involde the burr pieces were scaled up (x2)... whereas they have a physical length of 10 the get a length of 20 in BurrTools to cope with the half unit notches. But then the pieces that will make up the frame should become scaled up as well... something Johan forgot to do. So he ended up with pieces that would make a 10x10x10 frame to contain a burr of length 20. Something that obviously makes no sense and won't work.

But on the other hand the outer limits of the 20x20x20 cube hold not that much voxels to detect that there are too few in the pieces. That makes BurrTools search (almost)forever for a combination that would fill all the cubes on the outside. On the inside there are many variable voxels and since we all know these won't (and can't) affect the search for filling the outside.

It will only take a few hours (or less) to solve... I think. Adding different colors to the 'frame pieces' and the 'burr pieces' (and of course also to the result) will speed up things even more.
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Jack
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« Reply #13 on: March 22, 2009, 02:54:59 PM »

Hi Johan and Ronald

I have the same findings Ronald has; frame pieces are too small. When I repaired this, Burrtools keeps aborting on the problem. Not on other puzzles I tried afterwards.  Can it be that dimensions are simple too large for Burrtools to handle? In combination with the internal memory on my pc (3 GB)? If that's the case, using colors won't help.
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Johan Heyns
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« Reply #14 on: March 22, 2009, 03:12:27 PM »

My original file also continuously bombed out.  When I did it the second time I made the mistake of not doubling the stuff up.  Embarrassed Embarrassed

So the end result is Burrtools cannot handle this since it is too big.  &%$&^^&* Angry
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If you don't know where you are going, it does not matter which road you take. - Lewis Carroll

Seek not every quality in one individual.  -Confusious
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