YChess

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YChess, a family of chess programs by Roman Antonczyk, early Postcardware MS-DOS versions from the mid 90s running on 386 PCs with VGA or SVGA graphics cards. DOS Version 1.09, as available in the Internet Archive, mentions in its readme file a new command line options to adjust the transposition table size, recapture extensions, and modified passed pawn extensions. The later, no longer available Windows version YChess 1.0 was commercial distributed via the Kagi.com e-commerce micropayment platform. It is a native engine with an own WinBoard and UCI compliant GUI and apparently own endgame tablebases.

=Screenshots=

DOS
YChess 1.09 DOS Screen

Windows
YChess 1.0 Windows GUI

=Forum Posts=

1996 ...

 * Downloading YChess 1.08 by Alastair Scott, rgcc, July 30, 1996
 * ychess FAQ by Dimiter Kurtev, rgcc, August 16, 1996
 * YChess by Dimiter Kurtev, rgcc, September 04, 1997
 * YCHESS 1.10 !! by Jouni Uski, rgcc, May 21, 1997
 * Re: Deep Blue Vs. Kasparov by PMG, rgcc, June 21, 1999

2000 ...

 * The YChess case.... by Fernando Villegas, CCC, April 26, 2005
 * Will Zappa go the same way as Pirat/YChess GUI's ? by Michael Diosi, CCC, September 05, 2005
 * YChess by Fernando Villegas, CCC, September 28, 2008

2010 ...

 * Ychess 1.0 for Windows by Roman Antonczik by Norbert Raimund Leisner, CCC, August 24, 2013
 * Re: YChess 1.0 = a superb engine & GUI by Ruxy Sylwyka, CCC, August 26, 2013


 * YChess 1.0 = around 2575 ELO CCRL (4/40) by Ruxy Sylwyka, CCC, September 01, 2013
 * Tablebases Generator of YChess 1.0 by Norbert Raimund Leisner, CCC, September 25, 2013

=External Links=
 * YChess 1.09 : Free Download & Streaming : Internet Archive
 * Y Chess 1.10 hosted by Pavel Háse

=References= Up one Level