If the position after the null-move does not return a high value in the evaluation function, then clearly the first of the two moves did not contain a threat. As part of its search, Fritz allows one side to move twice (the other side does a null-move). ġ995 Fritz is built around a selective search technique known as null-move search. Frans Morsch told Chrilly Donninger about recursive null move, who popularized it by his Null Move and Deep Search paper in the ICCA Journal 1993. Nxc4+ 59.Bxc4 f5 60.a5 Kd6 61.Kc3 h5 62.a6 Kc7 63.Be6 Rf2 64.a7 Kb7 65.Kd3 h4Ħ6.a8=Q+ Kxa8 67.Ke3 Rxc2 68.Bxf5 Rc3+ 69.Kf2 Rxb3 70.Be4+ Ka7 71.Bd5 Rb2+ħ2.Kg1 h3 73.Be6 h2+ 74.Kh1 Ka6 75.Bd5 0-1įrans Morsch, as well as other Dutch computer chess programmers like Bart Weststrate and Dap Hartmann, did early experiments with recursive null move pruning in the late 80s, likely after it was discussed at the panel workshop during the WCCC 1986 after Don Beal's talk covering null move.
WCCC 1995 Playoff, Star Socrates - Fritz, Chris Joerg, Don Dailey, Frans Morsch, and Mathias Feist 26. Creative ChessBase partner Olaf Oldigs had suggested the name Fritz for the chess program.
Fritz was also a name given to German troops by the British and others in the first and second world wars, equivalent to Tommy, as the British troops were called by German and other troops.
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Whether you are a chess professional or an amateur: the ChessBase Online database will become indispensable from the first time you use it.The given name Fritz originated as a German nickname for Friedrich, or Frederick (der "Alte Fritz" was a nickname for King Frederick II of Prussia, and of Frederick III, German Emperor ), as well as for similar names including Fridolin. And you can also study the latest opening variations and access statistcs for all opening positions. Or you can load the games of Magnus Carlsen and see what makes the young Norwegian so irresistible. You can look through on your iPad ( or iPhone or iPod touch) all the great tournaments, like Zürich 1953 or the Fischer-Spassky match 1972, the chess detective story Karpov versus Korchnoi 1978 or Nakamura's amazing victory in Wijk aan Zee 2011. The whole history of chess in an app: 5 million chess games from 1624 till 2014! And every week new games from world class tournaments are added to it.
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