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Leela Chess Zero (abbreviated as LCZero, lc0) is a free, open-source chess engine and volunteer computing project based on Google's AlphaZero engine. It was spearheaded by Gary Linscott, a developer for the Stockfish chess engine, and adapted from the Leela Zero Go engine.
AlphaZero ran on a machine with four TPUs in addition to 44 CPU cores. In a 1000-game match, AlphaZero won with a score of 155 wins, 6 losses, and 839 draws. DeepMind also played a series of games using the TCEC opening positions; AlphaZero also won convincingly. Stockfish needed 10-to-1 time odds to match AlphaZero. [23]
By January 2019, Leela was able to defeat the version of Stockfish that played AlphaZero (Stockfish 8) in a 100-game match. An updated version of Stockfish narrowly defeated Leela Chess Zero in the superfinal of the 14th TCEC season, 50.5–49.5 (+10 =81 −9), [37] but lost the Superfinal of the next season to Leela 53.5–46.5 (+14 =79 -7).
This essentially meant AlphaZero could learn chess by itself. The initial tests with AlphaZero were staggering; in a 100 game match against the current strongest engine Stockfish, AlphaZero won 28 games and tied the remaining 72. [12] In many ways AlphaZero served not only as a breakthrough for chess computing, but for the AI world in general.
On 5 December 2017, DeepMind team released a preprint on arXiv, introducing AlphaZero, a program using generalized AlphaGo Zero's approach, which achieved within 24 hours a superhuman level of play in chess, shogi, and Go, defeating world-champion programs, Stockfish, Elmo, and 3-day version of AlphaGo Zero in each case.
A chess playing program provides a graphical chessboard on which one can play a chess game against a computer. Such programs are available for personal computers, video game consoles, smartphones/tablet computers or mainframes/supercomputers. A chess engine generates moves, but is accessed via a command-line interface with no graphics. A ...
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Support for Internet games for Windows Me and XP ended on July 31, 2019, and for Windows 7 on January 22, 2020. [10] Several third party games, such as Candy Crush Saga and Disney Magic Kingdoms, have been included as advertisements on the Start menu in Windows 10, and may also be automatically installed by the operating system. [14] [15 ...