Lise Dart Chess Engine

Lise is Beginner chess engine re-written in Dart which uses mixture of opening book + negamax + minimax.
Lise can play well known opening pawn structures/ piece placement and plays intermediate middlegame/opening play and beginner endgame play.

Remarks

Engine uses Dart chess library for legal chess move generation, chess rules checks, etc.

Terminal Chess Play

Lise Acheivements:

• Beating Stockfish level 1

• drawing 3 times to beginner trained Maia Chess engine

Engine Algorithm

Lise is a beginner engine, who has some sense of opening pawn structures and plays middlegame/endgame
like a beginner to intermediate player.

Algorithms

LiseChessEngine uses Minimax, Negamax and Opening book

Opening Book

White openings:

• Queens Gambit
• Kings Gambit
• g3 system
• london

Black Openings:

• French
• Caro can
• Slav
• KID
• Ownes Opening

Negamax Algorithm
Chessprogramming.org

• runs on depth 3, more the depth better move but slower search
• functions with eval function

Eval function

• takes account of chess board area and all legal moves
• gives white double the advantage compared to black to play as a defensive player as black, attacking player as white.

Engine Upgrades

Lise is still being worked on, with intentions to add

• A full tablebase support for better endgame play
• more opening support
• support for playing white side
• support for tactics creation
• transition to NN for dynamic piece values

Setup

• make sure to have dart installed
• git clone
• cd chess_enginelise
• enter command dart run

you will see lise playing itself a sample game of 4 moves.

Lise Java

this is remake of Lise chess engine which was written in Java, can more learn about Java version here