You know nothing about compression algorithms?Ed Trice wrote:So tell me, what compression technique did they use "20 years ago" that compressed data that used all 256 numbers from 0 to 255 within a single byte?
Oh, that's right, there was none
Checkers Is Strongly-Solved for 8-pieces
Moderators: hgm, Rebel, chrisw
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Re: Checkers Is Strongly-Solved for 8-pieces
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Re: Checkers Is Strongly-Solved for 8-pieces
You're trapped in a runlength "tunnel vision," which is very difficult to break out of. First, let me say there were several mistakes in your post, and I don't have time to address them.
The details emerge once you are actually writing the code and getting results. You soon find out that "compression logic" for WLD does not apply to DTW. Not only that, once you figure out the compression logic, the "light bulb moment" occurs, and everything falls into place.
The details emerge once you are actually writing the code and getting results. You soon find out that "compression logic" for WLD does not apply to DTW. Not only that, once you figure out the compression logic, the "light bulb moment" occurs, and everything falls into place.
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Re: Checkers Is Strongly-Solved for 8-pieces
You didn't answer my question.syzygy wrote:You know nothing about compression algorithms?Ed Trice wrote:So tell me, what compression technique did they use "20 years ago" that compressed data that used all 256 numbers from 0 to 255 within a single byte?
Oh, that's right, there was none
What did "they" use 20 years ago to compress Distance To Win for checkers?
Since you don't know, I'll inform everyone.
The answer is you didn't see past the tip of your nose when you made your post. You read what the Chinook team did, but you don't have the intelligence to realize their techniques "20 years ago" couldn't be applied to Distance To Win data. So now you look like you're an even dumber ass than before.
Instead of admitting you're wrong, you're still trying to deflect attention away from the fact you don't know what the hell you're talking about.
So answer the question. Or just stop being an ass and find some other topic to troll.
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Re: Checkers Is Strongly-Solved for 8-pieces
Perhaps you are unaware that the poster you replied to improved compression of chess DTZ databases by more than most people would have believed possible?Ed Trice wrote:You didn't answer my question.syzygy wrote:You know nothing about compression algorithms?Ed Trice wrote:So tell me, what compression technique did they use "20 years ago" that compressed data that used all 256 numbers from 0 to 255 within a single byte?
Oh, that's right, there was none
What did "they" use 20 years ago to compress Distance To Win for checkers?
Since you don't know, I'll inform everyone.
The answer is you didn't see past the tip of your nose when you made your post. You read what the Chinook team did, but you don't have the intelligence to realize their techniques "20 years ago" couldn't be applied to Distance To Win data. So now you look like you're an even dumber ass than before.
Instead of admitting you're wrong, you're still trying to deflect attention away from the fact you don't know what the hell you're talking about.
So answer the question. Or just stop being an ass and find some other topic to troll.
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Re: Checkers Is Strongly-Solved for 8-pieces
You seem to have serious issues.Ed Trice wrote:You didn't answer my question.
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Re: Checkers Is Strongly-Solved for 8-pieces
He unaware this is are also the chess forums. The chess people know more better than the checkers.jwes wrote:Perhaps you are unaware that the poster you replied to improved compression of chess DTZ databases by more than most people would have believed possible?
Then also...
... the indexers are the maddest ones.
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Re: Checkers Is Strongly-Solved for 8-pieces
I compressed the 8-piece database more than any other available program, with the ratio of over 30 positions per byte.jwes wrote:Perhaps you are unaware that the poster you replied to improved compression of chess DTZ databases by more than most people would have believed possible?
http://worldchampionshipcheckers.com/db ... isons.html
So, yeah, I know about compression.
I also solved checkmate in 268 for Queen + Pawn vs. Queen on an 80-square board, so I don't need any "lessons" from the peanut gallery.
The purpose of this thread was to ANNOUNCE an accomplishment, and the pissants showed up trying to discredit it.
You can all go to hell if that's your stance.
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Re: Checkers Is Strongly-Solved for 8-pieces
Yes, thank you.Ed Trice wrote:The purpose of this thread was to ANNOUNCE an accomplishment ...
I've learned a bit both from you and from your interlocutors. One point is that there isn't a rule in checkers similar to the 50 move rule in chess, so all the talk about DTZ tables is weird.
Deasil is the right way to go.
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Re: Checkers Is Strongly-Solved for 8-pieces
There is such a rule, which differs for each checkers variant. For 8x8 checkers, mostly played in the US/UK, there is a 40 move rule (80 ply). For 10x10 draughts, mostly played in the Netherlands, France, Russia and formerly French Africa, the rule is 25 moves without conversion (50 ply) until a draw.Dirt wrote:Yes, thank you.Ed Trice wrote:The purpose of this thread was to ANNOUNCE an accomplishment ...
I've learned a bit both from you and from your interlocutors. One point is that there isn't a rule in checkers similar to the 50 move rule in chess, so all the talk about DTZ tables is weird.
sources:
http://www.usacheckers.com/rulesofcheckers.php
http://www.fmjd.org/docs/Annex%201%20of ... aughts.doc
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Re: Checkers Is Strongly-Solved for 8-pieces
What you have posted is quite official looking, but there seems to be many official rules for checkers.Rein Halbersma wrote:There is such a rule, which differs for each checkers variant. For 8x8 checkers, mostly played in the US/UK, there is a 40 move rule (80 ply). For 10x10 draughts, mostly played in the Netherlands, France, Russia and formerly French Africa, the rule is 25 moves without conversion (50 ply) until a draw.Dirt wrote: I've learned a bit both from you and from your interlocutors. One point is that there isn't a rule in checkers similar to the 50 move rule in chess, so all the talk about DTZ tables is weird.
sources:
http://www.usacheckers.com/rulesofcheckers.php
http://www.fmjd.org/docs/Annex%201%20of ... aughts.doc
Deasil is the right way to go.