••• Current position: Home   Home Rybka engine Installation Computer chess Links Rybka team Contact one Welcome to RybkaChess.com! deutsche Website Rybka is a UCI chess engine programmed by International Master Vasik Rajlich Regular Updates for Noomen.ctg New versions of Jeroen Noomen's .ctg opening boook will be released regulary! The latest update is from 2016-10-13. Free download: Noomen.ctg (Updated)