Nemorino

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Nemorino, an UCI compliant, free open source chess engine by Christian Günther, also supporting the Chess Engine Communication Protocol, written in C++ and first released in September 2016 under the GPLv3 license. Nemorino's board representation and move structure are taken from Stockfish. Nemorino supports Syzygy Bases based on Basil Falcinelli's Fathom API, applies a very lazy parallel search, and is able to play Chess960.

=Etymology= Nemorino is named after the a character of Gaetano Donizetti's comic operaL'elisir d'amore, premiered on May 12, 1832 at the Teatro alla Canobbiana in Milan. Nemorino, a poor peasant, in love with Adina, asks quack doctor Dulcamara for Isolde's love potion, who sells him a bottle of cheap Bordeaux wine instead ...

=Features=

Board Representation

 * Bitboards
 * Magic Bitboards
 * Copy/Make

Search

 * Iterative Deepening with Aspiration Windows
 * PVS / Alpha-Beta
 * Transposition Table
 * Zobrist Hashing
 * Lazy SMP
 * Selectivity
 * Mate Distance Pruning
 * Null Move Pruning
 * Late Move Reductions
 * Check Extensions
 * Recapture Extensions
 * Futility Pruning
 * Quiescence Search
 * Delta Pruning
 * Static Exchange Evaluation
 * Move Ordering
 * Hash Move
 * PV-Move
 * Internal Iterative Deepening
 * Killer Heuristic
 * History Heuristic
 * Followup History Heuristic

Evaluation

 * NNUE (Nemorino 6)
 * Tapered Eval
 * Material
 * Mobility
 * King Safety
 * Pawn Structure
 * Endgame Knowledge

Misc

 * Chess960
 * Pondering
 * Syzygy Bases

=See also=
 * Fiction
 * Nemo
 * Peasant
 * Tristram

=Forum Posts=

2016 ...

 * Nemorino - new engine by Christian Günther, CCC, September 23, 2016
 * Nemorino 2.0 by Christian Günther, CCC, January 16, 2017
 * Nemorino 2.0a is available ... by Frank Quisinsky, CCC, March 15, 2017
 * Nemorino 3 by Christian Günther, CCC, June 18, 2017
 * Re: TCEC 10 by Christian Günther, CCC, October 15, 2017 » TCEC Season 10
 * Nemorino 4 by Christian Günther, CCC, December 21, 2017
 * Nemorino 5 by Florentino, CCC, July 22, 2018

2020 ...

 * Nemorino 6 (NNUE) by Florentino, CCC, September 28, 2020
 * Re: will Tcec allow Stockfish with a Leela net to play? by Connor McMonigle, CCC, June 17, 2021 » NNUE

=External Links=

Chess Engine

 * Christian Günther / Nemorino — Bitbucket
 * Nemorino in CCRL 40/40

Misc

 * L'elisir d'amore from Wikipedia
 * Una furtiva lagrima from Wikipedia
 * The Searchers - Love potion number 9 (1963), YouTube Video

=References= Up one level