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Rybka (Computer) vs Hikaru Nakamura
"The Bully Pulpit" (game of the day Apr-01-2011)
ICC blitz 3 0 (2008) (blitz), Internet Chess Club, Mar-15
Grob Opening: General (A00)  ·  0-1
ANALYSIS [x]

FEN COPIED

find similar games 2 more Rybka/Nakamura games
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Kibitzer's Corner
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Jul-16-08  Resignation Trap: Another instance of Nakamura toying with a computer.
Jul-16-08
Premium Chessgames Member
  Gilmoy: 61.Nxe6 111.Bxe4 Nakamura perfectly times a 2nd exchange sac to avoid a 50-move draw. 124..Nxf5, "knowing" that Rybka won't accept a draw while it's ahead in material (the modern-day meta-horizon effect?), hence 174.c4 Rybka "must" offer a non-draw. Rope-a-dope.

Computers still don't evaluate these closed positions correctly. Rybka evidently overvalued its Rooks, thought it was "winning", and refused to draw.

Jul-16-08  estebansponton: 271 jugadas al pedo!!!
Jul-16-08  lopium: <estebansponton: 271 jugadas al pedo!!!> Not really, for black at least since he won.
Jul-17-08  notyetagm: What an incredible final position.


click for larger view

Jul-17-08
Premium Chessgames Member
  Check It Out: <gilmoy> Thanks for that explanation, this game makes sense to me now.

Playing through this game was like playing Asteroids.

Jul-17-08
Premium Chessgames Member
  DarthStapler: Adding this to my collection LOL
Jul-17-08  notyetagm: <Check It Out: <gilmoy> Thanks for that explanation, this game makes sense to me now.>

A very good explanation of Nakamura's anti-computer strategy.

Jul-17-08
Premium Chessgames Member
  JointheArmy: One of the most amazing finishes I've ever seen. I like how Nakamura completely humiliates the human programmer of Rybka.
Jul-17-08  micartouse: Fun stuff. The whole approach to the game is cool - setting up the anti-comp pawn formation, sacrificing material, and just waiting for the computer to sacrifice pawns in order to avoid the draw. 271 moves in 3 minutes - is that right?

And what's with the Grob?

Jul-17-08  metatron2: i agree, <gilmoy> gave a very good explanation.

only regarding that part:

<Computers still don't evaluate these closed positions correctly. Rybka evidently overvalued its Rooks, thought it was "winning", and refused to draw.>

we should consider the fact that Rybka had just a few seconds to evaluate that position correctly (i didn't see the game but i assume that the purpose of all that Naka repeated moves was to waste Rybka's time).

i think that having more time, Rybka wouldn't have played 174. c4????

Jul-17-08
Premium Chessgames Member
  JointheArmy: <we should consider the fact that Rybka had just a few seconds to evaluate that position correctly (i didn't see the game but i assume that the purpose of all that Naka repeated moves was to waste Rybka's time).>

Keep in mind Nakamura had the same time to evaluate the position, so fair is fair.

Jul-17-08  metatron2: <Keep in mind Nakamura had the same time to evaluate the position, so fair is fair.>

correct, and that is where this part gets in:

<Rybka won't accept a draw while it's ahead in material (the modern-day meta-horizon effect?), hence 174.c4 Rybka "must" offer a non-draw>

it is true that there is basically a flaw in Rybka's decision making that Naka (and most other humans) don't have:

it shouldn't have played such a risky move without being sure about it.

still, that "bug" would have no effect had Rybka had more time, and thus that conclusion about its closed positions evaluation was a bit too extreme imo.

Jul-17-08  VinnyRoo2002: I just don't really see what the big deal about this game is. Nakamura shuffled pieces for too many moves, Rybka pressed for a win and blundered. This seems like a waste of time to me.
Jul-17-08  Riverbeast: Lock em up, lock em down!

Then watch for that swarm of killer B's...

Looks like Nakamura's cracked the code, and found the glitches in the Rybka beast

Jul-17-08
Premium Chessgames Member
  JointheArmy: <<<<<<<<<<<<<<<<<<<<I just don't really see what the big deal about this game is. Nakamura shuffled pieces for too many moves,>>>>>>>>>>>> Rybka pressed for a win and blundered.>

You answered your own question.

Jul-19-08  madlydeeply: I suppose I'm late to the party. This game is hilarious. This is pure chess humor. Which makes Nakamura a pure chess comedian. This humor could only be comprehended by a chess player. Any more jokes, Naka? Ho
Jul-19-08  Jim Bartle: Many of my games are just as hilarious.

Not intentionally, but still...

Jul-19-08  sleepkid: I have some scepticism about the validity of this game at the listed time control.

This is a 3/0 blitz game on ICC? I've made some pretty fast moves in a blitz game, but 271 moves in under 3 minutes? I think not.

This is a composition of some sort (possibly by trying out lines against Rybka at home, figuring out what it would play, and then taking it online.) or possibly two computers playing each other.

Jul-19-08
Premium Chessgames Member
  JointheArmy: <sleepkid> You haven't seen many Nakamura games at 3 0 have you?
Jul-20-08  sleepkid: <You haven't seen many Nakamura games at 3 0 have you?>

I've played plenty of games myself at 3/0. Being Nakamura or not has nothing to do with it.

Put a chessboard on your desktop (no pieces, just the image of one) and then go ahead and execute 135 separate mouse click, drags, and releases in under 3 minutes. You have about 1.3 seconds to perform each one (watch out for hand cramp.)

That's not impossible, but then you have to start factoring in things like "thought time", potential lag time from your server, reaction time, and hand eye coordination.

To make 271 moves in under 3 minutes a move has to be made every .6 seconds. Rybka can do this. My feeling is that Nakamura could only have done this if he had already tried and practiced this specific win against Rybka before hand, and he had absolutely zero lag, and at no time did he mistakenly grab the wrong piece, and he's got an incredibly responsive mouse for his computer, and then at the end he had enough of a time lead on Rybka to say "Oh, I'll just toy with him and underpromote to bishop."

We're really entering the realm of the improbable on this one.

This was either a composition (or pre-planned win), or two engines playing each other (the winning engine being programmed to underpromote.)

Jul-20-08  holland oats: This game is a real knee slapper. The position arising around move 100 made me chuckle a bit...notice how the Nakamura gets all his pawns on light squares to abet the dark bishop and the computer is left shuffling his rooks and king behind his pawn fence. And then later on its like someone flipped a switch and the computer is in "Onward at all costs" mode, hilarious.

Oh yeah and sleepkid, I'm pretty sure Nakamura uses premove. People could probably play thousands of moves in 3 0 with premove (moving a piece before your turn to take the minimal amount of time).

Jul-20-08  lost in space: LOL!!!!! Great example of how to win against silicon monsters.

I would really be happy to be able to win in such a manner against comps!

Jul-20-08  ravel5184: How come this game says it's 255 moves?
Jul-20-08  yxcvbnm: in my opinion it´s a shame that games like this are in the database. seriously.
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