ChessPositionRanking
ZeroTier
ChessPositionRanking | ZeroTier | |
---|---|---|
29 | 344 | |
132 | 13,415 | |
- | 1.6% | |
2.5 | 8.7 | |
5 months ago | 15 days ago | |
Haskell | C++ | |
MIT License | GNU General Public License v3.0 or later |
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ChessPositionRanking
- Chess Position Ranking
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How to Store a Chess Game in 26 Bytes Using Bit-Level Magic
3. There's extra nuanced things you might want to handle in the coding, like that pawns can't be on their own back row. That is significantly harder.
It looks to me like https://github.com/tromp/ChessPositionRanking has resolved these sorts of issues, but I haven't dug into exactly how.
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Permutation Iteration and Random Access
Multinomial rankings can be combined with a dozen others to rank a subset of all chess positions including all legal ones. This allows one to sample millions of random such positions, determine how many are legal, and thus obtain an accurate estimate of 4.8&10^44 legal chess positions [2].
[1] https://github.com/tromp/ChessPositionRanking/blob/main/src/...
[2] https://github.com/tromp/ChessPositionRanking
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The number of legal Chess diagrams is less than 4 × 10^37 which is an improvement on the previous upper bound of 2 × 10^40 by Steinerberger.
The key words being "without promotion". Both bounds, this one and Steinerberger's, only consider positions reachable without promotion. Allowing promotions, one estimate suggests that the number is close to 4.82 × 10^44.
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eli5 With billions and billions of people over time, how can fingerprints be unique to each person. With the small amount of space, wouldn’t they eventually have to repeat the pattern?
source
- Accurately estimating the number of legal chess positions
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"Chess too simple for my big brain, not like mobile strategy game"
This one as well as Shannon number wiki seem to say that possible sensible moves are about 10^40 while and 10^120 while taking any moves (maybe including some illogical / illegal ones) .
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How to build a Chess Engine, an interactive guide
Shannon's estimate was based on very primitive methods; by generating random positions and using fairly advanced methods to see whether they are legal or not (ie., can you construct a proof game for it, or prove that it could never happen), you will get much closer. A group of people have been working on this, and their current best estimate is (4.822 +- 0.028) * 10^44, or a bit over 148 bits. (Amazingly enough, Shannon wasn't all that far off on this account! His estimated number of legal games seems much more dodgy, though.)
http://talkchess.com/forum3/viewtopic.php?f=7&t=77685&sid=e3...
Practically speaking, https://github.com/tromp/ChessPositionRanking gives a number between 0 and approx. 8.7 * 10^45 for any legal position, so it's only a couple of bits away from optimality.
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Ask HN: Teach Me Something New
The number of chess positions has now been estimated with 2 digits of accuracy as ~ 4.8 x 10^44: https://github.com/tromp/ChessPositionRanking
ZeroTier
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List of ngrok/Cloudflare Tunnel alternatives and other tunneling software and services. Focus on self-hosting.
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Is there a way to bind ZeroTier with the Android Blue Iris app?
EDIT - I'm tired and cross-eyed after a bunch of internet searching and rabbit holes... A supposed ZeroTier dev said on April 25, 2023 that this would be addressed in a future release of the app in this thread: https://github.com/zerotier/ZeroTierOne/issues/1952. On August 10th, another engineer said that they are waiting for a car to be delivered.
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ZeroTier-GTK development help
Solution 2: Wait for support from Zerotier-One with DBUS
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Gravitational Teleport alternatives - netbird, ZeroTier, and awl
4 projects | 29 Jun 2023
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Self-Hosted Mesh Network / VPN For User-Friendly LAN Gaming Network?
https://github.com/zerotier/ZeroTierOne (11.5k stars)
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Setup a Local Wifi Lan
If you just want to connect between your devices, you don't need any hardware. Just install zerotier on them.
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