Revision as of 08:56, 17 June 2021

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Nalwald logo ^[1]

Nalwald,
an UCI compatible open source chess engine by Jost Triller, written in the Nim programming language ^[2], first released in April 2021 ^[3]. Nalwald is a bitboard engine and generates sliding piece attacks Kindergarten like, by looking up four pre-calculated line attack arrays, 32-Kbyte each, indexed by square and inner six bit line occupancy ^[4].

Features

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 ** [[Delta Pruning]]
 ==[[Evaluation]]==
-* [[Piece-Square Tables]] indexed by [[King]] [[Squares]]
+* [[Tapered Eval]]
+* [[King]] [[Squares|Square]] contextual [[Piece-Square Tables]]
 * [[Mobility]]
 ** [[Rook on Open File]]
 * [[Pawn Structure]]
 ** [[Isolated Pawn]]
-** [[Duo Trio Quart (Bitboards)|Trio]]
+** [[Duo Trio Quart (Bitboards)|Trio Pawn]]
 ** [[Passed Pawn|Passed Pawns]]
 * [[King Safety]]