Lozza

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a JavaScript open source chess engine and user interface by Colin Jenkins, first introduced in March 2014. To play a game of chess or to analyze a position via FEN [|online], Lozza requires a [|modern] [|web browser] since it is instantiated as [|web worker]. As UCI engine, Lozza can be used in Windows GUIs like WinBoard or Arena via Edmund Moshammer's jsUCI tool starting with jsuci.exe lozza.js. Other JavaScript based UCI engines, also [|source-to-source compiled] to JavaScript, are able to run under Lozza's [|web] based user interface, for instance the [|Emscripten] port of Stockfish 5, Stockfish-js.
 * Lozza**,

=Description= Lozza represents the board using a 12x12 mailbox array and two lists of white and black pieces. The principal variation search inside the classical iterative deepening framework features a transposition table indexed by Zobrist keys and state of the art selectivity, amongst others null move pruning, late move reductions, and IID. It has implemented the simplified evaluation function by Tomasz Michniewski.

=See also=
 * Geography

=Forum Posts=

2014

 * [|Lozza - A javascript UI and engine] by Colin Jenkins, CCC, March 01, 2014
 * [|Javascript chess engine using simplified eval] by Colin Jenkins, CCC, September 13, 2014
 * [|Lozza - a Javascript web based UCI engine - update v1.10] by Colin Jenkins, CCC, October 18, 2014

2015 ...

 * [|Stockfish in Lozza UIs] by Colin Jenkins, CCC, January 07, 2015 » Stockfish
 * [|Lozza - A Javascript Engine - version 1.14] by Colin Jenkins, CCC, January 25, 2015
 * [|Lozza website updated to 1.15] by Colin Jenkins, CCC, April 24, 2015
 * [|Lozza 1.16] by Colin Jenkins, CCC, October 31, 2015
 * [|Lozza v1.17 release] by Colin Jenkins, CCC, July 29, 2016
 * [|Lozza 1.18] by Colin Jenkins, CCC, April 17, 2018

=External Links=

Chess Engine
> [|Lozza - javascript chess engine - Help] > [|lozza.js]
 * [|Lozza - javascript chess engine]
 * [|Lozza 1.15 64-bit] in CCRL 40/40

Lozza UI

 * [|Play Lozza online]
 * [|Analyse/evaluate a FEN]
 * [|Play Stockfish under Lozza-UI online]

Misc

 * [|Lozza from Wikipedia]
 * [|Urban Dictionary: Lozza]

=References= =What links here?= include page="Lozza" component="backlinks" limit="20"
 * Up one level**