Hydra is currently (as of June 2005) very likely the strongest chess player in the world. It was designed by a team including Dr Christian ("Chrilly") Donninger who has written papers on computer chess. Hydra was previously known as, or more accurately evolved from Brutus. It works in a roughly similar fashion to Deep Blue, utilising large numbers of purpose-designed chips (in this case implemented as an FPGA). In Hydra, there are multiple computers, each with its own FPGA acting as a chess coprocessor. These coprocessors enable Hydra to search enormous numbers of positions per second; making each system more than 10x faster than an unaided computer. Hydra runs on a 64 node Xeon cluster, utilising about 32 of the nodes. The engine is able to evaluate up to a depth of about 18 ply (9 moves by each player), compared to Deep Blue, which only evaluated to about 12 ply. The search uses null-move heuristics. The overall current FIDE equivalent playing strength might be very roughly in the Elo 2900 range, and Hydra has so far no loss on record against an unaided human player. Hydra has, however, been beaten by humans who had access to the advice of lesser machines during their games against Hydra; for example, correspondence grandmaster Arno Nickel beat Hydra in a two-game correspondence match lasting six months. It is generally believed that teams consisting of strong human chessplayers and off-the-shelf chess hard- and software can likely still achieve substantial superiority over Hydra also in realtime play. =External Links= * [http://www.hydrachess.com/]Hydrachess
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Words begining with Hydra_(chess):
Hydra_(chess)
Hydra (chess)
Hydra is currently (as of June 2005) very likely the strongest chess player in the world. It was designed by a team including Dr Christian ("Chrilly") Donninger who has written papers on computer chess. Hydra was previously known as, or more accurately evolved from Brutus. It works in a roughly similar fashion to Deep Blue, utilising large numbers of purpose-designed chips (in this case implemented as an FPGA). In Hydra, there are multiple computers, each with its own FPGA acting as a chess coprocessor. These coprocessors enable Hydra to search enormous numbers of positions per second; making each system more than 10x faster than an unaided computer. Hydra runs on a 64 node Xeon cluster, utilising about 32 of the nodes. The engine is able to evaluate up to a depth of about 18 ply (9 moves by each player), compared to Deep Blue, which only evaluated to about 12 ply. The search uses null-move heuristics. The overall current FIDE equivalent playing strength might be very roughly in the Elo 2900 range, and Hydra has so far no loss on record against an unaided human player. Hydra has, however, been beaten by humans who had access to the advice of lesser machines during their games against Hydra; for example, correspondence grandmaster Arno Nickel beat Hydra in a two-game correspondence match lasting six months. It is generally believed that teams consisting of strong human chessplayers and off-the-shelf chess hard- and software can likely still achieve substantial superiority over Hydra also in realtime play. =External Links= * [http://www.hydrachess.com/]Hydrachess
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Hydra_(chess)
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