-this Jiri Dufek opening book gives best results with Rybka4 chess engine -download torrent which contains 3 rar files -use winRAR to Extract R401.rar -place resulting files in your chessbas 48938fc538 25f36f5a35c0031b67db369faa5e44bcdf8f6eca 382.12 MiB (400677195 Bytes)
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Rybka 4 Opening Book
Updated: Mar 18, 2020
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