Fat Fritz 2 - Ein unmoralisches Angebot by Topschach Benny, Febru(German).Stockfish sues Chessbase! by mwyoung, ProDeo Forum, July 20, 2021.Stockfish: Our lawsuit against ChessBase by Kurt Lanc, CCC, July 20, 2021.Fat Fritz question by Leo Anger, CCC, July 18, 2021.Time to rethink what Albert Silver has done? by Srdja Matovic, CCC, July 03, 2021.It walks like a clone, it quacks like a clone.
Fritz chess how to#
How to make a double-sized net as good as SF NNUE in a few easy steps by Chris Whittington, CCC, February 28, 2021.An actual interesting computer chess read about FF2 by Dietrich Kappe, CCC, February 27, 2021 » Stephen Ham article.The distinction between engines and neural nets by Madeleine Birchfield, CCC, February 26, 2021.Why I stood up for Allie is why I stand up for FF2 by Dietrich Kappe, CCC, February 23, 2021 » Allie.Fat Fritz 2 nets: Github posted vs commercial by Tibono, CCC, February 22, 2021.Are neural nets (the weights file) copyrightable? by Adam Treat, CCC, February 21, 2021.Interesting read about Fat Fritz 2 by Marc-O Moisan-Plante, CCC, February 19, 2021.FF2 verses SF, what are the important differences? by Dann Corbit, CCC, February 13, 2021.Calling All Armchair GPL Lawyers by Andrew Grant, CCC, February 12, 2021.by Tord Romstad, Twitter, February 10, 2021 Re: Fat Fratz 2.0 Copyleft Infringement by Joost VandeVondele, FishCooking, February 10, 2021 Fat Fratz 2.0 Copyleft Infringement by Bernt Nicht, FishCooking, February 10, 2021.by Gian-Carlo Pascutto, Twitter, February 09, 2021 Re: Fat Fritz 2 by gladius, CCC, February 14, 2021 » CCRL Fat Fritz 2 by Jouni Uski, CCC, February 09, 2021.Fat Fritz for Linux by Joshua Shriver, CCC, December 20, 2020.
Fritz chess update#
Re: Fat Fritz Update by Albert Silver, CCC, December 12, 2020
Fritz chess license#
In summer 2021, the Stockfish team filed a lawsuit against ChessBase to enforce the consequences of the license termination concerning Fat Fritz 2 and the allegedly Stockfish derivative Houdini 6 sold by ChessBase. The Stockfish community, denying Fat Fritz 2's originality as claimed by ChessBase, initially reacted with the release of Stockfish 13 on Febru. While the separated none GPL licensed NNUE file had a replacement on GitHub, it was not identical with the commercial purchased network, yielding in weaker play. The initial release had the 40 MiB NNUE file embedded inside the Fat Fritz 2 executable,Īnd was soon separated after the intervention of the Stockfish community due to a possible GPL license violation. Using the original Fat Fritz as initial supervisor to evaluate chess positions, the learning of Fat Fritz 2 was reinforced by Stockfish's alpha-beta search. The network was trained by Albert Silver with the help of Daniel Uranga and Dietrich Kappe, who provided scripts and ideas.įurther credits were given to the Stockfish contributors, and in particular Yu Nasu for his groundbreaking work on NNUE, and Hisayori Noda for the initial Stockfish NNUE implementation. Lc0 and DeusX aka Fat Fritz components Fat Fritz 2įat Fritz 2, released on February 09, 2021, is based on NNUE technology and Stockfish 12 with a double sized network,Īnd thus, running on a CPU, not requiring expensive GPU graphic cards for game playing like its predecessor. Fat Fritz was further supported by Daniel Uranga. The project and its underlying techniques were emphasized by a talk of AlphaZero co-author Thore Graepel at ChessBase, attended by German computer chess icon Thomas Nitsche along with his sons and Math42 authors Raphael Nitsche and Maxim Nitsche. Initially introduced as a cloud project in summer 2019, inspired by DeepMind's ground breaking AlphaZero approach combining Deep learning with Monte-Carlo Tree Search (MCTS) ,Īnd Albert Silver's Deus X experience, relaxing Leela Chess' "Zero" paradigm of pure reinforcement learning due to supervised learning, Fat Fritz was released in November 2019 as part the Fritz 17 package,īest supported by a GPU card such as Nvidia GeForce 20 series.