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Stockfish (Computer) vs AlphaZero (Computer)
AlphaZero - Stockfish Match (2018), London ENG, Jan-18
Spanish Game: Berlin Defense. Rio Gambit Accepted (C67)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Dec-18-18
Premium Chessgames Member
  keypusher: So here is a rarity, SF beating A0. I can hardly say anything intelligent about it without recourse to an engine of my own, which I don't have right now.

It's a rook-and-opposite-color bishop ending that goes monotonously to and fro for a long time. Between moves 57 and 103 almost nothing seems to happen. Then A0 unaccountably (to me) sacrifices a pawn, White's king breaks out of his enclosure and SF wins. But why that particular course of events happened, and why a half-dozen others could not have happened, I couldn't tell you.

Jan-17-19  Pyrandus: Une partie sans aucun enseignement, ni morale.
Jul-25-19
Premium Chessgames Member
  Sally Simpson: Hi K.P.

I went over this game and yes this a mystery. (I feature it.)


click for larger view

Alpha played 103...h4. If it was me making that move then it was played hoping for 104 g4 when 104...fxg4 wins for Black.

But Alpha does not play 'hope chess' to that extent. I'm reluctant to use the horizon effect, Stockfish even has the right Bishop for the Rook's pawn.

The game has been on the brink of three fold rep a number of times is this Alpha seeing no way of avoiding a coming three fold rep.

"Between moves 57 and 103 almost nothing seems to happen."

Agreed but Alpha has been setting a few humorous mirror traps, nothing deep enough to worry Stockfish, but nice to see a machine with a sense of humour.

There may be a 'no 3fold rep' in certain formations from Alpha who has has maybe given the constrained White King v the relatively free Black King too much credit.

I feel kind of proud. 103...h4 is a typical me trap! ( I think Alpha got it from reading my blog!)

***

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