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a WinBoard protocol 2 compliant chess engine written by Severi Salminen in C with some x86 assembly routines, first released in December 2001 [1]. As bitboard engine, it uses rotated bitboards to calculate sliding piece attacks, and otherwise applies PVS alpha-beta with null move pruning, mate threat extensions, futility pruning, and SEE inside an iterative deepening framework without aspiration windows [2]. Requem has a simple evaluation function supported by a pawn hash table, and has some sense of pawn islands. It is not aware of repetitions [3], and lacks a main transposition table [4].
Section of Mozart's Requiem, K 626 [5]

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  1. ^ Requiem (a WinBoard compatible engine) RELEASED! by Severi Salminen, CCC, December 09, 2001
  2. ^ Requiem v0.52 released by Severi Salminen, CCC, February 07, 2002
  3. ^ To Severi Salminen about Requiem by Benny Antonsson, CCC, January 16, 2002
  4. ^ Homepage of Severi Salminen - Requiem
  5. ^ A section of a page from the manuscript of Wolfgang Amadeus Mozart's Requiem, K 626. (1791), showing Mozart's heading for the first movement. It was supposedly written for his own funeral. Austrian National Library, Codex 17561a, folio 1 (recto), Requiem (Mozart) from Wikipedia

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