Harald+Lüßen

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a German software developer, computer chess programmer and author of the WinBoard compliant chess engine Elephant, which is known for some bitboard comparisons in sliding piece attacks. In the late 80s, Harald already wrote two private chess programs, one in GFA-Basic, and the second one in C for the Atari ST. After more than 10 years "out of business", he found bitboard explanations in the German magazine Computerschach und Spiele, and started his work on Elephant in August 2002. He proposed Exploding Bitboards and elaborated on Michael Sherwin's approach dubbed Sherwin Bitboards.
 * Harald Lüßen**,

=Forum Posts=

2004

 * [|Elephant 1.00, a new winboard engine] by Harald Lüßen, CCC, March 15, 2004

2005 ...

 * [|Re: Compact Bitboard Attacks] by Harald Lüßen, Winboard Forum, September 13, 2006 » Exploding Bitboards
 * [|Re: New bitboard move generator] by Harald Lüßen, Winboard Forum, September 19, 2006 » Sherwin Bitboards
 * [|Re: New bitboard move generator] by Harald Lüßen, Winboard Forum, September 21, 2006
 * [|From PGN databases to a better evaluation] by Harald Lüßen, CCC, July 11, 2007
 * [|Re: BitBoard Tests Magic v Non-Rotated 32 Bits v 64 Bits] by Harald Lüßen, CCC, August 24, 2007 » Sliding Piece Attacks (Bitboard methods compared)
 * [|Python PGN reader and opening databases] by Harald Lüßen, CCC, November 11, 2007
 * [|Re: Bitboard Engine] by Harald Lüßen, Winboard Forum, Aprril 10, 2008

2010 ...

 * [|Perft and en_passant] by Harald Lüßen, CCC, September 11, 2012 » Perft, En passant
 * [|Draw by 50 move rule or mate] by Harald Lüßen, CCC, October 13, 2012 » Fifty-move Rule
 * [|Re: 5th WCCC 1986, video on youtube] by Harald Lüßen, CCC, March 20, 2013 (English summary) » WCCC 1986 Video

=External Links=
 * [|Elephant] from WBEC Ridderkerk

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