Laser, an UCI compliant open source chess engine by Jeffrey An and Michael An, written in C++11, first released in summer 2015 under the GNU General Public License. Laser 1.0, released in December 2015, already performes lazy SMP [1].
Laser experiment [2]

Features

Board Representation

• Bitboards
• Fancy Magic Bitboards

Search

• Lazy SMP up to 128 Threads
• Iterative Deepening
• Fail-Hard Principal Variation Search
• Transposition Table
  • Zobrist Hashing
  • Two Bucket System
• Selectivity
  • Adaptive Null Move Pruning
  • Late Move Reductions, since 1.3 also at PV nodes
  • Futility Pruning
  • Reverse Futility Pruning
  • Razoring
  • Move Count Based Pruning (Late Move Pruning)
  • Check Extensions
  • Singular Extensions
• Quiescence Search
  • Captures
  • Queen Promotions
  • Checks on first three plies
• Move Ordering
  • Internal Iterative Deepening
  • Static Exchange Evaluation
  • MVV/LVA
  • Killer Heuristic
  • History Heuristic

Evaluation

• Evaluation Cache
• Piece-Square Tables
• King Safety
• Pawn Structure
• Mobility
• SWAR Tapered Eval à la Stockfish
• Tuned with reinforcement learning, coordinate descent, and a variation of Texel's Tuning Method

Misc

• Syzygy TB support (1.3)

Forum Posts

• Laser 0.1 moves instantly every move for me by Graham Banks, CCC, September 18, 2015
• Laser 1.0 Release by Jeffrey An, CCC, December 24, 2015
• Laser 1.1 Release by Jeffrey An, CCC, April 18, 2016
• Laser 1.2 Release by Jeffrey An, CCC, September 17, 2016
• Laser 1.3 Release by Jeffrey An, CCC, January 08, 2017
• Laser 1.4 Release by Jeffrey An, CCC, May 11, 2017
• Laser 1.5 Release by Jeffrey An, CCC, December 27, 2017

External Links

Chess Engine

• jeffreyan11/uci-chess-engine · GitHub
• Releases · jeffreyan11/uci-chess-engine · GitHub
• Laser 1.3 64-bit 4CPU in CCRL 40/40

Misc

• Laser from Wikipedia
• Laser (disambiguation) from Wikipedia
• Au5 & Fractal - Laser Beam Show, YouTube Video
  

References

1. ^ Laser 1.0 Release by Jeffrey An, CCC, December 24, 2015
2. ^ A military scientist operates a laser in a test environment. The United States Air Force Research Laboratory (AFRL) Directed Energy Directorate conducts research on a variety of solid-state and chemical lasers, Image was released by the United States Air Force with the ID 090809-F-5527s-0001, Wikimedia Commons
3. ^ uci-chess-engine/README.md at master · jeffreyan11/uci-chess-engine · GitHub

What links here?