Leela chess is here https://github.com/glinscott/leela-chess
It uses the exact MCTS algorithm as described in AlphaZero, with value and policy networks, but performs really badly in tactics (often missing 2-3 ply shallow tactics) To get a somewhat strong MCTS chess engine, I had to use alpha-beta rollouts instead, as described in https://www.microsoft.com/en-us/research/wp-content/uploads/2014/11/huang_rollout.pdf I think this could be suitable for 9x9 Go too. It has been a mystery for me how AlphaZero avoided into falling for shallow traps in chess. Daniel On Fri, Mar 2, 2018 at 10:22 AM, Xavier Combelle <xavier.combe...@gmail.com> wrote: > Where is leela chess. How many games it is trained on? > > Le 2 mars 2018 18:20, "Dan" <dsha...@gmail.com> a écrit : > >> Hello Aja, >> >> Could you enlighten me on how AlphaZero handles tactics in chess ? >> >> It seems the mcts approach as described in the paper does not perform >> well enough. >> >> Leela-chess is not performing well enough even though leela-go seems to >> be doing well. >> >> Daniel >> >> >> >> >> >> On Fri, Mar 2, 2018 at 4:52 AM, Aja Huang <ajahu...@gmail.com> wrote: >> >>> >>> >>> 2018-03-02 6:50 GMT+00:00 "Ingo Althöfer" <3-hirn-ver...@gmx.de>: >>> >>>> Von: "David Doshay" <ddos...@mac.com> >>>> > Go is hard. >>>> > Programming is hard. >>>> > >>>> > Programming Go is hard squared. >>>> > ;^) >>>> >>>> And that on square boards. >>>> Mama mia! >>>> >>> >>> Go is hard for humans, but in my own opinion I think Go seems to be too >>> easy for deep learning. So is programming Go now. :) >>> >>> Aja >>> >>> >>>> >>>> ;-) Ingo. >>>> _______________________________________________ >>>> Computer-go mailing list >>>> Computer-go@computer-go.org >>>> http://computer-go.org/mailman/listinfo/computer-go >>>> >>> >>> >>> _______________________________________________ >>> Computer-go mailing list >>> Computer-go@computer-go.org >>> http://computer-go.org/mailman/listinfo/computer-go >>> >> >> >> _______________________________________________ >> Computer-go mailing list >> Computer-go@computer-go.org >> http://computer-go.org/mailman/listinfo/computer-go >> > > _______________________________________________ > Computer-go mailing list > Computer-go@computer-go.org > http://computer-go.org/mailman/listinfo/computer-go >
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