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Rybka - for the serious chess player. [ #Computer chess ] [ Downloads ] ••• • • Downloads Free downloads 2016-10-13!

With many corrections, additions, improvements, novelties and a few extra lines. Please make sure always to use the following options (see Book Options): 1. Tournament Book should be switched ON; 2.

Minimum games should be set to 3; 3. Up to move should be set to 100 2016-07-05 a new gambit testsuite for engine testing with exciting gambit lines. 2016-05-27, a whole new opening book in.ctg format by Jeroen Noomen, author of the Rybka 3 opening book. The book is very solid, most work was done in the Sicilian (Najdorf, Sveshnikov), Ruy Lopez (Marshall, Zaitsev), Slav (Classical and Semi-Slav), Queen's gambit and Nimzo/Queen's-Indian. 2015-12-24, based on Worldchampionship matches from Botvinnik-Smyslov 1957 and Spasski-Fischer 1972 through to Kasparov-Karpov 1990.

In.pgn and.abk format. 2015-07-30: A collection of seven test suites including three opening suites (sicilian, king's indian, benko) and the latest gambit and short lines suites. In Arena format (.abk). 2015-06-15: GambitLines.ctg is an openingbook that can be used in the ChessBase GUI. It is meant for engine-engine testing.

The book contains gambit lines only: one side has a (small) material advantage, the other side has to prove compensation. 2015-06-07: ShortLines.ctg is an openingbook that can be used in the ChessBase GUI.

It is meant for engine-engine testing. The purpose of the book is to give the engines only a small number of opening moves and keep as many pieces on the board as possible. Typically, the book is only six moves deep. In some cases more opening moves are available, to make games more interesting. 2015-05-17: 100 short lines, to force the programs to calculate as early as move 2 and as late as move 8. The goal is to prevent test positions with already several pieces off the board and / or test positions with most pieces already developed. Thus, programs have to solve the development problems themselves.

2015-05-17 - Jeroen Noomen merged all his test suites in one BIG test suite! 2014-11-12, a huge collection of important positions from the Bg5 Najdorf intended for engine testing. 2014-06-21, the 30 positions have been taken from very recent top GM games, for engine testing. 2012-04-16, 50 topical, trendy, sharp, modern and sometimes murky positions, for engine testing.

2012-02-04, a collection positions from the Benko gambit. Designed for engine vs.

Engine testing. 2012-01-29, a collection of important positions from the King's Indian Defence. Designed for engine vs. Engine testing. 2011-12-17, a collection of positions from the sicilian opening.

Intended for engine vs. Engine testing.

2011-12-03 The 2012 version of Jeroen Noomen's set of opening positions. Intended for engine vs engine testing, gives a balanced representation of modern chess (pgn file). 2011-03-05, an update for the Rybka 4 engine, fixing various bugs. 2010-12-04 - contains all games played by Rybka on Lukas' cluster (pgn file). 2009-10-09 All (ca. 2009-03-04 - a selection of older Rybka versions (from Rybka 1.0 to Rybka 2.2), for collectors and Rybka fans.

2008-10-21 by Sedat Canbaz, one of the very best opening books for computer chess. 2008-09-10 - one of the strongest free.ctg books (by Sedat Canbaz). 2008-07-26 - an updated version of Jeroen Noomen's set of opening positions.

Intended for engine vs engine testing, gives a balanced representation of modern chess. 2008-07-26 - Jeroen Noomen's set of gambit positions. Intended for engine vs engine testing.