This exponential growth pattern – the number of moves roughly doubles for each piece added – has been dubbed Haworth’s Law. It was observed that as the number of pieces increases in these record positions, the length of the perfect-play solution extends dramatically. Now he reveals which portions of the eight-piece tablebases have been completed and presents some of the most interesting positions found.Īs tablebases advanced in solving more complex endgames, researchers were able to determine the longest possible forced win in positions with a total of three to seven units. Marc was the co-discoverer of the famous seven-piece position in which it takes White over 500 moves to force a win.
ENDGAME TABLEBASE SEARCH OR EXPLORER UPDATE
One such developer, Marc Bourzutschky, has written a fascinating article-length update on the progress of his work, published on the Dutch endgame-study site, ARVES. In the years since the releases of these databases, programmers have been building on the eight-piece version, which of course requires tremendous computer resources. As discussed in that blog series, the two most comprehensive tablebases currently are the Lomonosov and Syzygy, both of which cover all possible endgames with up to seven pieces. If you’re new to the subject, though, refer to my introductory Adventures with endgame tablebases.
Many readers will be familiar with tablebases, software that effectively plays perfect chess in certain endgame positions.
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