Is this faster than your fixed shift approach introduced one year ago?
http://www.talkchess.com/forum3/viewtopic.php?t=66538
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- Tue Feb 19, 2019 8:46 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Shift and Address included into Magic number
- Replies: 2
- Views: 221
- Mon Dec 03, 2018 8:05 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Extension stage in MCTS
- Replies: 3
- Views: 662
Re: Extension stage in MCTS
Guess you mean expansion strategy ... using the UCB1 formula, see
https://www.youtube.com/watch?v=UXW2yZndl7U
https://www.youtube.com/watch?v=UXW2yZndl7U
- Tue Nov 27, 2018 6:42 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: CCR board representation
- Replies: 7
- Views: 840
Re: CCR board representation
Yes, 128-bit xmm registers with SSE may be treated as vector of four floats or two doubles, as well since SSE2 as integer vectors of 16 bytes, eight words, four double words or two quad words. AVX or AVX2 two times more. There are 8 of these SIMD-registers in 32-bit mode, and 16 in 64-bit mode. http...
- Mon Nov 26, 2018 6:33 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: CCR board representation
- Replies: 7
- Views: 840
Re: CCR board representation
Good luck with CCR, you may try using 256-bit ymm register of x86 AVX2 for one register boards, to make/unmake by board ^= tbl[enumMove] ;-) related cpw stuff: https://www.chessprogramming.org/Nibble#ArrayOfNibbles CCR with "vertical" nibbles: https://www.chessprogramming.org/Quad-Bitboards https://...
- Sat Nov 03, 2018 9:37 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Which author what engine?
- Replies: 6
- Views: 990
Re: Which author what engine?
Conversion and revisiting, replacing links etc. takes some time - most of the programming stuff is done. I still have a job and a bike ...
- Sun Aug 12, 2018 10:30 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Attacks From table
- Replies: 12
- Views: 2449
Re: Attacks From table
Hi Edsel,
with magic or pext bitboards, most use "On the Fly" generation ...
For some references see
https://www.chessprogramming.org/Attack_and_Defend_Maps
Good luck,
Gerd
with magic or pext bitboards, most use "On the Fly" generation ...
For some references see
https://www.chessprogramming.org/Attack_and_Defend_Maps
Good luck,
Gerd
- Tue Jul 03, 2018 8:19 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Chess Programming Wiki
- Replies: 32
- Views: 17227
Re: Chess Programming Wiki
I have noticed the announcement that Wikispaces, which is hosting the Chess Programming Wiki, is shutting down ( http://blog.wikispaces.com/ ). I hope there are plans to migrate the content elsewhere, because it has been a good resource and reference. --Jon We have wikitext backups, and some months...
- Tue Jun 05, 2018 9:02 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Bitboard for a non-chess game
- Replies: 4
- Views: 1209
Re: Bitboard for a non-chess game
The naive disjunctiv normal form approach would be, with some subexpressions to optimize oneEmptyNeighbor = ( occupied_shift_left & ~occupied_shift_down & ~occupied_shift_right & ~occupied_shift_up) | (~occupied_shift_left & occupied_shift_down & ~occupied_shift_right & ~occupied_shift_up) | (~occup...
- Fri Apr 20, 2018 11:30 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Chess Programming Wiki
- Replies: 32
- Views: 17227
Re: Chess Programming Wiki
CPW is under Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0).
The new wikimedia cpw makes good progress and will be available in about July with revisited and new content and links. No need to waste bandwidth or memory.
The new wikimedia cpw makes good progress and will be available in about July with revisited and new content and links. No need to waste bandwidth or memory.
- Mon Mar 19, 2018 9:30 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Chess Programming Wiki
- Replies: 32
- Views: 17227
Re: Chess Programming Wiki
We have wikitext backups, and some months time to look for another host. How about digitalocean.com? They're $5/mo. and you get 25gb of ssd disk space, a full linux shell enviornment where you can install whatever you want. I would like to see the 'wikitext backup' for this page: https://chessprogr...