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Hydra (Computer) vs Ruslan Ponomariov
2nd Festival Internacional de Ajedrez Man - Machine (2005), Bilbao ESP, rd 3, Nov-22
French Defense: Tarrasch. Closed Variation (C05)  ·  1-0



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find similar games 2 more Hydra/Ponomariov games
sac: 25.exd6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Nov-26-05  weisyschwarz: <csmath> Hey, thanks! But Ponomariov could have taken lessons from Nickel. Nickel's defense didn't allow the pawn chain to build up, and then trot out the king to an open left field. As you say, the knights had their day. Ponomariov should have adopted the Tarrasch the way Nickel did, with basic opening development. Hydra didn't seem stunned by the Grandmaster's play.
Nov-27-05  PinkPanther: <csmath>
How is what Ponomariov did anti computer strategy? Even my old regular version of Fritz 8 laughed at that move. As soon as he played Kd7 the eval went to +1.83 or something like that, and it's not like the computer thought it was better and just floundered around. Even my regular old Fritz 8 shredded black's position to pieces just like Hydra did.
Premium Chessgames Member
  beenthere240: White's 19th move is a nice sac offer. I guess if it's accepted, then 20 d5 when black has a world of bad choices. Or is there something even stronger for white on move 20?
Nov-28-05  weisyschwarz: <beenthere240>, L. Kavalek offers "After 19...dxe4 20.d5! black's position quickly deteriorates, for example 20...exd5 21.Rxb6+ Kxb6 22. Nxd5+ wins; or 20...Nd8 21. d6 traps the black queen. [After] 20... Na7, [then] 21.Rxb6+! Kxb6 22.d6 Qd8 23.Be3+ Kb7 24.Bxe4+ Kc8 25.Bxa7 and white crashes through". So much for the old myth that computers lack the creativity to make sacrifices. I don't think there is anything stronger. L. Kavalek says after 20. Nd6 "Black is in trouble, because this pesky knight controls many squares and can be supported by the dark bishop."
Nov-28-05  weisyschwarz: <Pink Panther>, Kavalek says the "anti-computer strategy" began with 8...c4?!, and the idea is to block the position. Ponomariov should have used "the Nickel defense" "coin" a term, hahaha! 0-:
Nov-28-05  child of my tears: Hydra was really all over Ponomariov in this game, although there's no disgrace in that for Pono. Some of Hydra's moves seem so quiet to my eyes, its only moves later you realise how wickedly positional they really are.
Nov-29-05  TigerPawns: 19. Nde4 is one of the most beautiful moves i've ever seen. The knight just laughs it's way to a game winning square at d6. Moves 23 to 29, beginning by deferring the recapture, just laugh at the whole black position. An old computer might have not seen deeply enough to exploit the bad king position and have liquified into an equal end game, but it's seems that these days such a provocation is like paving a highway to ones own jugular.
Nov-29-05  Karl Marx Artiaga: kasparov vs hydra? any guess who wins?
Nov-29-05  like a GM: < kasparov vs hydra> 2-8 :p
Nov-29-05  bishopawn: I will say:

Kasparov 5
Hydra 5

Nov-30-05  Mendrys: Bad chess is bad chess. This system may have confused older computers but nowadays they exploit moves that he would never play against a human in brutal fashion. 4 moves to get the king to a7 across an open b file with a white rook on it. Yikes!
Nov-30-05  TigerPawns: actually 19. Nde4 is not that hard for my crappy laptop with an old version of fritz to find, after a few minutes...
Dec-06-05  notyetagm: 19 ♘de4!! is the most brilliant tactical move that I have seen all year.
Premium Chessgames Member
  patzer2: Indeed 19. Nde4!! is a brilliant tactical and positional pseudo-sacrfice combined. If Black declines the offer, then White obtains a positionally and tactically won game with 20. Nd6! as in the game.

However, the acceptance of the pseudo-sacrifice makes for even more interesting tactics than the game continuation. If 19...dxe4, then White wins with the discovered attack 20. d5!, uncovering multiple threats against Black's wrecked Queenside and weakened king position.

The following detailed analysis with Fritz 8 clearly demonstrates White's decisive advantage after 19. Nde4!! dxe4 20. d5! :

19. Nde4!! dxe4 20. d5! Nxe5 (20... exd5 21. Nxd5 Qc5 22. Nxb6 Kc7 ; 20... Nd8 21. d6 ; 20... Na7 21. Be3 Nb5 22. Bxb6 Kxb6 23. Qe3+ Kb7 24. d6 Qd8 25. Bxe4+ Kc8 26. Qc5+ Nc7 27. Rxb8+ Kxb8 28. Qb6+ Kc8 29. Rb1 Nb5 30. Qxa6+ Kb8 31. Qb7#) 21. Qxe5 Qd6 22. Qxe4 Ka7 23. Bf4 Qd8 24. Bxb8+ Qxb8 25. dxe6 fxe6 26. Nd7 .

Premium Chessgames Member
  patzer2: Notice how 21. Ba3!! and 24. Ba4! prepare an instructive mating attack to overwhelm Pono's weak King position.

These prepatory attacking moves set up the combined discovered attack and clearance move 27. d7! which clears the way for the brilliant waiting move 28. Qc7!!, when a quick mate or decisive win of material will quickly follow.

Dec-18-05  notyetagm: Yes, <patzer2>, this victory by Hydra is perhaps the best purely tactical demolition that I have seen all year.
Dec-22-05  THE pawn: It's really funny how engines can change the course of the game. I've been running my really old program on 19.(?) and he's not even able to find Nde4!! after 6 minutes of thinking. Chessmaster 9k had a hard time finding it. Maybe it's because of the extremely profound moves Ba3! and Ba4 that follow 19.Nd4!! and he can't figure out how to play the rest of the game.
Dec-23-05  THE pawn: did I say chessmaster 9k? woups I mean't GNUchess who took 19 minutes to find the move. Chessmaster 9k impressed me, he found the move in 19 seconds, which is awsome for a so-called lesser program, he even got the following combination precisely after only 31 seconds.
Dec-01-06  notyetagm: Hydra has not one octopus but -two- octopi after 20 ♘d6!.

Position after 20 ♘d6!:

click for larger view

Knights do not get any better than this.

Dec-01-06  s4life: I wish we could see games like this in the current man vs machine...
Dec-01-06  notyetagm: <s4life: I wish we could see games like this in the current man vs machine...>

You mean interesting games full of pieces, in which the queens survive beyond move 15?

Yes, that would be nice but with Kramnik it ain't gonna happen.

Mar-06-09  dwavechess: 22/29 concur with Rybka 3 at 3 min. per move for Hydra
Sep-13-09  Lady In Black: its really delightfull seeing a nervous top king losing badly.sorry,i love blood.
Premium Chessgames Member
  profK: 10...b4 sets a great cross lever. Best is 11.Bb2 bc3 12.Bc3 Bb4 and Black has a lotta space.
Feb-16-19  amadeus: Hail Hydra.
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