Rybka 4, DVD-ROM

For years Rybka has been the uncontested number one in computer chess andsince its great breakthrough in 2006 the program has won with remarkableregularity one world title after the other. So that this state of affairs will continue in the future, the Rybka-team gathered around programmer Vasik Rajlichhas developed a new version which is even better: Rybka 4 plays more aggressively and more tactically .During the last two years the engine has been improved in almost all areas. Onemajor theme has been the understanding of the attack on the king. The newRybka 4 is in this case more precise and reliable than its predecessor. At thesame time the search function now operates more quickly and efficiently andthe evaluation function delivers even more spot-on judgments. As for the playingstyle, Rybka 4 logically continues the development of the past few years.Thanks to further development in the tactical area too, the new Rybka 4 will beindispensable for all those who work and analyse with chess engines. Rybka 4is delivered with the new user-friendly Fritz 12 interface and contains a database of 1.5 million games and includes CLASSIC membership for playchess.com for one year.