ChessEngine

An UCI-compatible Chess Engine written in C++20 with an Android and WearOS UI written in Jetpack Compose.

This project uses the evaluation values (in the file Evaluation.cpp) from the Stockfish Chess Engine, licensed under GNU GPL 3.0.

Features

Search:
- AlphaBeta Pruning
- Aspiration Window
- Iterative Deepening
- Futility Pruning
- Reverse Futility Pruning
- Null Move Pruning
- Late Move Reductions
- Quiescence Search
- Lazy SMP
Move Ordering:
- Hash Move
- MVV/LVA
- Killer heuristic
- History heuristic
Evaluation:
- Evaluation Tapering
- Piece Square Tables
- Threats/Attacks
- Pawn Structure (Connected/Isolated/Double/Passed)
- Piece Mobility
- Long Diagonal Bishop
- Bishop Pairs
- Rooks on Open Files
- Rooks on Queen Files
- Pawn Shield
Other:
- Zobrist Hashing
- Transposition Table
- Pawn Structure Table

Building

Android and WearOS

To build the for project for Android you will need at least:

Android Studio Arctic Fox
Android SDK Version 31 (Android 12)
NDK 23.1.7779620

Linux

Please note that the Linux version of the engine has no UI but can be used with any UCI-compatible chess interfaces.
To build the for project for Linux you will need at least:

CMake 3.18
C++20 Compiler:
- GCC 10
- Clang 13

Compatible Interfaces

License

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.