Marvin

Home * Engines * Marvin

[ Marvin the robot [1] Marvin,

an UCI and Chess Engine Communication Protocol compatible chess engine by Martin Danielsson, written in C. Marvin was originally developed in the early 2000s until 2005, released in May 2004 [2] and January 2005 [3] as closed source engine. After ten years “out of business”, Martin Danielsson restarted the development in 2015 - the completely rewritten Marvin 2.0.0 was released as open source engine under the terms of the GNU General Public License (GPL3) in March 2017 [4].

Board Representation

• Bitboards
• 8x8 Board
• Plain Magic Bitboards

Search

• Lazy SMP (3.0.0)
• Iterative Deepening
• Aspiration Windows
• Principal Variation Search (2.1.0)
• Move Ordering

History Heuristic Killer Heuristic

• Selectivity

Check Extensions Futility Pruning Reverse Futility Pruning (2.1.0) Null Move Pruning SEE Pruning Late Move Reductions Razoring

• Quiescence Search

Evaluation

• NNUE (5.0.0)
• Tapered Eval
• Material

Bishop Pair

• Piece-Square Tables
• Mobility

Rook on (half) open file Rook on 7th rank

• Pawn Structure

Pawn Hash Table Doubled Pawn Isolated Pawn Passed Pawn

• King Safety

Pawn Shield

• Tempo (4.0.0)
• Texel’s Tuning Method

Misc#

• PolyGlot Opening Book Fomat
• Pondering
• Syzygy Bases using Fathom (2.1.0)

See also#

• Marvin Minsky

Forum Posts#

2004 …#

• Marvin - new Winboard engine by Martin Danielsson, Winboard Forum, May 09, 2004
• New version of Marvin by Martin Danielsson, Winboard Forum, September 30, 2004
• Marvin 1.3.0 by Martin Danielsson, Winboard Forum, January 01, 2005
• How to run Marvin? by Harm Geert Muller, Winboard Forum, May 26, 2007

2017 …#

• Marvin 2.0.0 released by Martin Danielsson, CCC, March 21, 2017
• Marvin 2.1.0 released by Martin Danielsson, CCC, June 24, 2017
• Marvin 2.2.0 by Martin Danielsson, CCC, September 30, 2017

2018

• Marvin 3.0.0 by Martin Danielsson, CCC, February 10, 2018
• Marvin 3.1.0 by Martin Danielsson, CCC, July 05, 2018
• Marvin 3.2.0 by Martin Danielsson, CCC, November 08, 2018

2019

• Marvin 3.3.0 by Martin Danielsson, CCC, April 06, 2019
• Marvin 3.4.0 by Martin Danielsson, CCC, July 09, 2019

2020 …#

• Marvin 3.5.0 by Martin Danielsson, CCC, February 13, 2020
• Marvin 4.0.0 by Martin Danielsson, CCC, August 29, 2020 » TCEC Season 19
• Marvin 4.0.1 by Martin Danielsson, CCC, November 19, 2020

2021

• Marvin 5.0.0 by Martin Danielsson, CCC, January 12, 2021 » NNUE
• Re: will Tcec allow Stockfish with a Leela net to play? by Connor McMonigle, CCC, June 17, 2021 » NNUE
• Marvin 5.1.0 by Martin Danielsson, CCC, July 10, 2021
• Marvin 5.2.0 by Martin Danielsson, CCC, November 14, 2021

External Links#

Chess Engine#

• GitHub - bmdanielsson/marvin-chess: Marvin - An UCI/XBoard compatible chess engine
• GitHub - bmdanielsson/nnue-trainer: PyTorch trainer for NNUE style neural networks » NNUE
• Marvin in CCRL 40/40

Misc#

• Marvin from Wikipedia
• Marvin (comic strip) from Wikipedia
• Marvin (name) from Wikipedia
• Marvin (robot) from Wikipedia
• Marvin the Paranoid Android from Wikipedia ( Douglas Adams)
• Marvin Gaye - What’s Going On (1971), YouTube Video

References#

1. ↑ Marvin the robot, Animated Gif by Penyulap, August 23, 2012, Wikimedia Commons
2. ↑ Marvin - new Winboard engine by Martin Danielsson, Winboard Forum, May 09, 2004
3. ↑ Marvin 1.3.0 by Martin Danielsson, Winboard Forum, January 01, 2005
4. ↑ Marvin 2.0.0 released by Martin Danielsson, CCC, March 21, 2017
5. ↑ GitHub - bmdanielsson/marvin-chess: Marvin - An UCI/XBoard compatible chess engine

Up one Level