Doch

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Doch, an UCI compliant chess engine by primary author Don Dailey, supported by chess advisor and evaluation expert and Don's long time collaborator Larry Kaufman. The development started in 2007, and it was first released to the public as free engine in fall 2009.

=Komodo= In January 2010, Doch evolved to Komodo to become one of the strongest programs ever.

=Etymology= Doch is acronym of Don's Chess. Quote from a Frank Quisinsky interview, December 2009 : Doch was never intended to be the name that would stick. When I first decided to write this program I needed a name and did not want to spend days obsessing over it. I did not want to call it "chess" but it needed a name to give it some personality. Doch stands for DOn's CHess. I never got around to giving it a proper name and I feel a bit immodest calling it after my own name! =Copy-Make= Doch was a 64-bit aka bitboard program, applying a Copy-Make approach with a position state of 192 byte allocated on the stack position search( position_state *prev, ...  ) {  position_state  new_position; ... other stuff foreach move in movelist do { make( prev, &new_position, move ); } }

=See also=
 * Komodo
 * Occam

=Forum Posts=
 * Doch 09.980 (uci) by Don Dailey available by Jim Ablett, CCC, November 13, 2009
 * Doch 1.2 update (uci) by Don Dailey available by Jim Ablett, CCC, December 15, 2009
 * Doch 1.3.1 by Don Dailey, CCC, January 05, 2010
 * A New Name for Doch.... by Fernando Villegas, CCC, January 07, 2010

=External Links=
 * Computerschach, Interview with Don Dailey by Frank Quisinsky, Schachwelt.de, December 18-20, 2009
 * doch - Wiktionary

=References= Up one Level