Tom Likens
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Tom Likens,
an American electrical engineer and as AMD employee part of the design team implementing the Zen microarchitecture with the Ryzen series of x86-64 CPUs, first released in March 2017 [1].
As computer chess programmer, Tom Likens is author of the Chess Engine Communication Protocol compatible chess engine Djinn, which was his third attempt to write a chess program.
Tom Likens has been interested in bitboards ever since he read the Atkin and Slate paper on Chess 4.5 [2] (circa 1978).
In 2005, Tom was a bit tired of bitboards and learned towards some type of 0x88 and Vector Attacks [3] inspired by CCC posts of Christophe Théron [4] [5], but finally stuck to bitboards.
Forum Posts
2000 ...
- Nice Rotated-bitmaps Article by Hyatt in ICCA by Tom Likens, CCC, February 07, 2000 » Rotated Bitboards [6]
- Interesting EGTB bug by Tom Likens, CCC, April 16, 2002 » Endgame Tablebases
- How to handle EGTB stalemates by Tom Likens, CCC, March 02, 2003 » Stalemate
- Hamming distance and lower hash table indexing by Tom Likens, CCC, September 02, 2003
- Evaluation-based Reductions and/or Extensions by Tom Likens, CCC, December 28, 2003 » Extensions, Reductions
- Implementing Planning in an Engine by Tom Likens, CCC, February 04, 2004 » Planning
- Time to implement Learning by Tom Likens, CCC, February 26, 2004 » Learning
- Evaluating Pinned Pieces by Tom Likens, CCC, May 19, 2004 » Pin
2005 ...
- Open Sourcing your Engine by Tom Likens, Winboard Forum, October 05, 2005
- Move ordering at different (Knuth) node types by Tom Likens, Winboard Forum, February 21, 2006 » Move Ordering, Node Types
- Compact Bitboard Attacks by Tom Likens, Winboard Forum, March 14, 2006 » Kindergarten Bitboards
- New version of Djinn 0.920 (Windows 32 & Linux 32/64) by Tom Likens, Winboard Forum, March 21, 2006
2010 ...
- Djinn 0.969 Released (64-bit + 32-bit) by Tom Likens, CCC, October 20, 2012
- How Do You Automatically Tune Your Evaluation Tables by Tom Likens, CCC, January 07, 2014 » Automated Tuning
2015 ...
- Re: AMD's Ryzen launches March 2, outperforming Intel's Core by Tom Likens, CCC, February 28, 2017 » AMD
- Re: My New AMD Rzyen 1800X System by Tom Likens, CCC, May 12, 2017
- Re: Ryzen tips by Tom Likens, CCC, May 15, 2017
- Re: buying a new computer by Tom Likens, CCC, July 09, 2019
External Links
References
- ↑ Re: AMD's Ryzen launches March 2, outperforming Intel's Core by Tom Likens, CCC, February 28, 2017
- ↑ David Slate, Larry Atkin (1977). Chess 4.5 - The Northwestern University Chess Program. Chess Skill in Man and Machine, reprinted (1988) in Computer Chess Compendium
- ↑ Open Sourcing your Engine by Tom Likens, Winboard Forum, October 05, 2005
- ↑ Re: Question:1.hashtable 2.board 3.C by Christophe Théron, CCC, June 13, 2000
- ↑ 0x88 is not so smart by Christophe Théron, CCC, June 13, 2000
- ↑ Robert Hyatt (1999). Rotated Bitmaps, a New Twist on an Old Idea. ICCA Journal, Vol. 22, No. 4