Laser - UCI-compliant chess engine

Laser is a UCI-compliant chess engine.

This is a command-line engine only. To have a graphical interface, the executable can be used with any UCI chess GUI such as XBoard.

Laser is released under an open source license.

Features include:

Lazy SMP up to 128 threads.
Fancy magic bitboards for a 4.5 sec PERFT 6 @2.2 GHz (no bulk counting).
Evaluation:
- Tuned with reinforcement learning, coordinate descent, and a variation of Texel’s Tuning Method.
- Piece square tables.
- King safety, pawns shields and storms.
- Isolated/doubled/passed/backwards pawns.
- Mobility.
- Outposts.
- Basic threat detection and pressure on weak pieces.
A two-bucket transposition table with Zobrist hashing, 16 MB default size.
An evaluation cache.
Syzygy tablebase support.
Fail-soft principal variation search:
- Adaptive null move pruning, late move reduction.
- Futility pruning, razoring, move count based pruning (late move pruning).
- Check and singular extensions.
Quiescence search with captures, queen promotions, and checks on the first two plies.
Move ordering:
- Internal iterative deepening when a hash move is not available.
- Static exchange evaluation (SEE) and Most Valuable Victim / Least Valuable Attacker (MVV/LVA) to order captures.
- Killer and history heuristics to order quiet moves.

Website: github.com/jeffreyan11/laser-chess-engin
Support:
Developer: Jeffrey An, Michael An
License: GNU General Public License v3.0

Laser is written in C++. Learn C++ with our recommended free books and free tutorials.

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