Betsy

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Home * Engines * Betsy

Hurricane Betsy [1]

Betsy,<br/ a WinBoard compatible chess engine by Landon W. Rabern, written in C with a little Assembly, released in September 2000 [2]. Originally written in Pascal with its own text interface it was rewritten in C using rotated bitboards. Betsy applies PVS with null move pruning, and various standard and some aggressive non-standard extensions and reductions. According to a former Arena site, Betsy was the first published chess engine able to play Chess960, and was therefore Arena partner engine.

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  1. Hurricane Betsy in the Gulf of Mexico in September of 1965 as taken by the TIROS-8 weather satellite. Source: NOAA Photo Library, September 4, 1965
  2. Betsy from WBEC Ridderkerk (Internet Archive)

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