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. 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 (circa 1978). In 2005, Tom was a bit tired of bitboards and learned towards some type of 0x88 and Vector Attacks inspired by CCC posts of Christophe Théron, 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
 * 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

=References= Up one Level