Difference between revisions of "Xiphos"
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* [http://www.talkchess.com/forum/viewtopic.php?t=67179 Xiphos 0.2.2] by [[Milos Tatarevic]], [[CCC]], April 20, 2018 | * [http://www.talkchess.com/forum/viewtopic.php?t=67179 Xiphos 0.2.2] by [[Milos Tatarevic]], [[CCC]], April 20, 2018 | ||
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67820 Xiphos 0.3] by [[Milos Tatarevic]], [[CCC]], June 25, 2018 | * [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67820 Xiphos 0.3] by [[Milos Tatarevic]], [[CCC]], June 25, 2018 | ||
| + | * [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=68508 Xiphos 0.4] by [[Milos Tatarevic]], [[CCC]], September 24, 2018 | ||
=External Links= | =External Links= | ||
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[[Category:GPL]] | [[Category:GPL]] | ||
[[Category:UCI]] | [[Category:UCI]] | ||
| + | [[Category:Military]] | ||
Revision as of 16:56, 25 September 2018
Xiphos,
an UCI compliant open source chess engine by Milos Tatarevic, written in C, licensed under the GNU General Public License v3.0, first released on February 28, 2018. Xiphos utilizes bitboards with BERLEF mapping (a1=56, a8=63, h1=0, h8=7) [2]. Sliding piece attacks are determined by either magic bitboards, or if compiled for BMI2 capable x86-64 processors, by PEXT bitboards. Xiphos executables are available to run under Linux, Mac OS and Windows. Still work in progress with a relatively simple evaluation function, the first Xiphos release should already be on par with engines rated around 3000 Elo on CCRL 40/4 scale [3].
Contents
Acknowledgements
Milos Tatarevic was inspired by Garry Kasparov's book Deep Thinking: Where Machine Intelligence Ends and Human Creativity Begins [4] [5], which evoked his childhood passion computer chess, wondering how hard it could be to develop an engine strong enough to suppress the legendary Deep Blue - giving it a try. The Home (Thank You) and following open source engines were mentioned as further inspiration in the author's acknowledgements [6]:
Selected Features
Search
- Parallel Search using Threads
- Iterative Deepening
- Aspiration Windows
- Principal Variation Search
- Transposition Table
- Singular Extensions (0.2)
- Pruning
Evaluation
Misc
Forum Posts
- New engine: Xiphos by Milos Tatarevic, CCC, February 28, 2018
- Xiphos 0.2 by Milos Tatarevic, CCC, April 14, 2018
- Xiphos 0.2.2 by Milos Tatarevic, CCC, April 20, 2018
- Xiphos 0.3 by Milos Tatarevic, CCC, June 25, 2018
- Xiphos 0.4 by Milos Tatarevic, CCC, September 24, 2018
External Links
Chess Engine
Misc
References
- ↑ Graphic of Bronze Age swords, Xiphos (fig. 1-3 left) and Makhaira (fig. 4), Image from the 4th edition of Meyers Konversationslexikon (1885–90), Wikimedia Commons
- ↑ xiphos/game.h at master · milostatarevic/xiphos · GitHub
- ↑ New engine: Xiphos by Milos Tatarevic, CCC, February 28, 2018
- ↑ “Deep Thinking” | Kasparov
- ↑ Garry Kasparov (2017). Deep Thinking: Where Machine Intelligence Ends and Human Creativity Begins. with contributions by Mig Greengard, amazon.com
- ↑ xiphos/README.md at master · milostatarevic/xiphos · GitHub
- ↑ xiphos/search.c at master · milostatarevic/xiphos · GitHub
- ↑ xiphos/eval.c at master · milostatarevic/xiphos · GitHub
