Breaking every HUMAN Principle in Chess! - Stocfish NNUE vs Leela C Zero - TCEC Season 19 Superfinal

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Top Chess Engine Championship, formerly known as Thoresen Chess Engines Competition (TCEC or nTCEC), is a computer chess tournament that has been run since 2010. It was organized, directed, and hosted by Martin Thoresen until the end of Season 6; from Season 7 onward it has been organized by Chessdom. It is often regarded as the Unofficial World Computer Chess Championship because of its strong participant line-up and long time-control matches on high-end hardware, giving rise to very high-class chess.
The TCEC competition is divided into seasons, where each season happens over a course of a few months, with matches played round-the-clock and broadcast live over the internet. Each season is divided into several qualifying stages and one "superfinal", where the top two chess engines play 100 games to win the title of "TCEC Grand Champion". In the superfinal, each engine plays 50 openings, once as each side. Beginning in Season 11 in 2018, a division system was introduced; the top 2 engines in each division are promoted, and the bottom 2 are relegated. Currently, there are 5 divisions (a Premier division, and divisions 1-4); newcomers generally start in division 4.
PGN OF THE GAME:
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. g4 h6 7. h4 a6 8. Nxc6 bxc6 9. Qd3 Nf6 10. g5 hxg5 11. Bxg5 Qb6 12. O-O-O a5 13. Qf3 Bd7 14. Bc4 Rb8 15. Bb3 c5 16. h5 a4 17. Nxa4 Qa5 18. Bxf6 gxf6 19. Nc3 Qb6 20. Qd3 Ke7 21. a3 Bh6+ 22. Kb1 Rhc8 23. Qc4 Rc6 24. Rhe1 Rc7 25. Rd3 Bf4 26. Nd5+ exd5 27. exd5+ Be5 28. Qh4 Kd8 29. Rxe5 dxe5 30. Rf3 Kc8 31. h6 Kb7 32. Bc4 Ba4 33. Rxf6 Qa5 34. Qe4 Bb5 35. d6+ Bc6 36. Qxe5 Re8 37. Qf5 Rd7 38. Rxf7 Qd8 39. Rg7 Kb6 40. b4 cxb4 41. axb4 Rxg7 42. Qc5+ Kb7 43. hxg7 Re1+ 44. Kb2 Qf6+ 45. c3 Qxg7 46. b5 Be4 47. Bd5+ Bxd5 48. Qxd5+ Ka7 1-0

[@dannygjk]

This opening line is great for monster calculators.

[@Jozarovschesschannel]

The Sicilian is always sharp

[@yashuaashanti9194]

L3

[@nielsharksen78]

2:21 Jozarov coaching Garry Kasparov about public relations

[@Jozarovschesschannel]

I really like Kasparov, if he would comment on chess all day i would follow every comment, but recently it is just Trump, Putin etc

[@spartancticonsultoriait6356]

True!

[@seanspawn7805]

@@Jozarovschesschannel Didn't know Trump played Putin OTB. Even I'd take Trump.

[@seanspawn7805]

@Brad Heilman Enough Brad. This is a real chess channel, not a political channel. Your love of the T man is ur love. Enjoy.

[@gausedukativnicentar4309]

@Brad Heilman I think a lot of people here would disagree, but this is not the place for that kind of a discussion. Let's talk about chess! :)

[@eaglethedigger]

Thank you. Your explanation of good and bad ideas (variants) within the game are clear and the point. I am a beginner and it is so nice to discover the tactics in the variants with your great commenting. Thank you!

[@Jozarovschesschannel]

Most welcome

[@willyh.r.1216]

"The art of attack in chess ... by Stockfish" should be the title of this beautiful game. Thank you for posting it!

[@Jozarovschesschannel]

Next time i will use your title for sure

[@BPShyam]

The way potential pawn breaks were analysed and refuted was mesmerising. I was sceptical of white's play with having a open B file, and even when it was down a piece with the potential to exchange pieces. Looked like Stock fish was in the driver's seat all through with precise calculations. Awesome analysis like always @Jazarov's chess channel!

[@Corteum]

Great analysis, Jozarov!

[@Jozarovschesschannel]

👍

[@robcat6377]

one thing i have noticed @Jozarov is that you have a very hit and miss style. what i mean by this is that you find some very beautiful and accurate continuations, but you also have a tendancy to like to not simplify when that is indeed the quickest way to your goal. knowing as i do the tendancy for high rated players to not want to swap stuff off, this suggests to me that you are a strong player yourself, however, some(most?)-times, the percentage game wins.

[@vidiveniviciDCLXVI]

Hey man another nice video, send love to Antonio with the recovery.

[@Jozarovschesschannel]

Thanks! Will do!

[@rickdynes]

Kasparov is a Hero...He doesn't Normalize dictators and would be dictators

[@bariseker4193]

15:52 black is actually not a whole rook up. White has 5 pawns for the rook so material equal.

[@yoru120]

It's depending on chess pieces position as well. And also, we often use the standard valuation of chess pieces: 1-3-3-5-9, means pawn = 1, knight = bishop = 3, rook = 5, queen = 9 But for stockfish it's far different, the average value overall of the Rook is 6.625, much stronger than 5 pawns, you can find it in wikipedia, here is the link en.m.wikipedia.org/wiki/Chess_piece_relative_value In Alternative valuations I will write that here anyway Pawn 1 - Knight 4.16 - Bishop 4.41 - Rook 6.625 - Queen 12.92 (Note that it's overall, the value will change depending on the position of pieces) I don't have real reason why stockfish judge all other pieces much more value than we thought, but i can guess it's because stockfish can use pieces more effective than human since it have insane calculation speed and depth.

[@Corteum]

What's so impressive for me is how strong SF is now after the introduction of NNUE. But even so, SF with NNUE still struggles with the following position (without multi-pv) for some reason -- it's a totaly computational mystery! 5rk1/pp3p1p/7b/2pR4/8/2P4P/P1PNr1P1/2K4R b - - 1 1 (winning move is.. Rxd2!! followed by Rd8 and c4!!---From Kaplan vs Bronstein, Hastings 1975).

[@Jozarovschesschannel]

Thanks i will check it out

[@l00d3r]

I don't know how to read that position. Where can I learn that notation? Thanks in advance.

[@Corteum]

@@l00d3r It's called a FEN (not a PGN). You copy and paste the FEN into a chess GUI like Arena, Fritz, or CuteChess. Look for a "paste FEN" option on the menu somewhere. Good luck.

[@l00d3r]

@@Corteum Thank you. I had Stockfish 12 and Lc0 analyse that position for 5 minutes. Neither could find Rxd2. They both suggested Rxg2 with around -4 advantage to black. After I forced Rxd2, the advantage was -6.5 (sf) and -3.1 (lc0). Interesting that Lc0 didn't find it, either.

[@isocle]

Saving this for later

[@The_Paranoid_Android]

best chess channel on youtube :)

[@Jozarovschesschannel]

Thanks for the good words

[@capablancalegendary3773]

Jozarov is the best

[@heroricspiritfreinen38]

FINISH HIM That thumbnail practically forced me to click on this video and boy was it a good choice

[@Jozarovschesschannel]

Thank you very much

[@nuroamado4203]

Insane game very entertaining!!!

[@dimaratosgeorgiadis2672]

It would be very interesting if they would organize a little match between nnue and the exact same version of alphazero that crushed stockfish back in 2018. It can't be all that difficult technically and probably all the chess world would be interested to see the stockfish's progress in relation with the legendary alphazero.

[@dimaratosgeorgiadis2672]

@The Deeper Mind i know, and nnue will crush it obviously but it would be interesting to see how much fish improved in relation to alpha because it didn't just lose it got annihilated even with 100x more time than alpha and also because that match got incredible attention, so i think that many people would be interested to see an Alpha vs nnue. Not leela, alpha.

[@intermitttence2022]

The only thing that we got that was kinda close was Leela, now Stockfish NNUE’s equal, vs Stockfish 8, where Leela beat Stockfish by a much larger margin than Alpha. It’s a shame that Alphazero was never released for public, but I’m grateful for the Leela team to continue the idea, who are just as talented as the DeepMind team were.

[@russianbotfarm3036]

On the fishcooking google groups forum (maybe it was the lczero forum), someone said that Google is now training for different types of chess - (like 960). If so, maybe they're retraining Alpha on regular chess, too, just for the lulz, and we'll see matches with a stronger Alpha! (note that this is entirely speculation, except for the rumor that Google is going with other chess variations).

[@mohammedsleiman9542]

Thanks a lot for the video. Great analysis as always.

[@Jozarovschesschannel]

Thanks

[@ayonmaity6150]

It seems very surprising that Lc0 cannot understand Sicilian defense variations and on the other hand Stockfish cannot understand Queen's Indian defence positions . Something to think about for the developers of the two engines .

[@Jozarovschesschannel]

Its really Like the Kasparov Karpov match

[@ayonmaity6150]

@@Jozarovschesschannel Yes Sir a thrilling one !!

[@coxscorner]

Amazing game.

[@danielgautreau161]

In the final position Black cannot play Kc8 to prevent White from playing d7 because of Qa8+ and then Qb7+ winning Black's Q. Amazing game.

[@Jozarovschesschannel]

👍

[@InfiniteUniverse88]

In TCEC, do engines get a chance to play each other on both sides of a preset position?

[@hassanhubbi8289]

Hello chess friends and welcome to jozarovs's chess channel

[@Jozarovschesschannel]

😜

[@voy_tech]

Those were some heavy punches.

[@Jozarovschesschannel]

Brutality mode on

[@lautarohoyos6074]

The evil laugh at the breaking move! Lol

[@Jozarovschesschannel]

Hahahah

[@ashesds1]

after stockfish plays h4 was c4 not possible by black to deflect the bishop from protecting b2?

[@luwangth999]

That twitter interruption was.hilarious..but liked the message though..It seems Politics in Russia is scary these days..,😁

[@Jozarovschesschannel]

It is scary worldwide

[@GenesisOfPorcupines]

Politics is scary everywhere and always.

[@_trismegistus]

Our politicians have failed us. We are the only reason they exist. It is absolutely up to us to speak out about what we want and need. No need to hide behind the chessboard.

[@rickdynes]

@@Jozarovschesschannel It is scary because people leave politics to the politicians INSTEAD of getting involved...Evil succeeds when it goes unchallenged

[@hagaiderech1765]

Just wow! 5 pawns for the rook.

[@Jozarovschesschannel]

It was a very sharp and beautiful game

[@mikekenworthy]

It appears that G4 is the answer to the Sicilian. And if you dare exchange queen's, you get mated. I'm not sure I could ever win:) as you say"Brutal"

[@rbnn]

I don’t think this is nearly as artistic as Kasparov-Topalov. In that game, among other things black’s position looked fairly normal; here Black obviously had huge development issues.

[@msalty2823]

Jozarov how is your brother in law Antonio "Agadmator" doing? Can you let us know if he has had the procedure and is doing okay? #agadmator?

[@Jozarovschesschannel]

He is recovering as expected. Thanks for the support

[@Jozarovschesschannel]

He Had the procedure, so far everything went good

[@msalty2823]

@@Jozarovschesschannel Glad to hear that. I look at both of your channels every day. My wife even knows your voices from the videos even though she does not play. Pass on my best wishes please. Thanks

[@Jozarovschesschannel]

M Salty i will, thank you very Much, i will send him the screenshot of our texting 💪

[@himantasaikia8724]

Great performance by Stockfish nnue... But sad to see Leela lose again. I have always supported Lc0 over Stockfish but this Stockfish NNUE I do have developed likeness because its just brilliant... Does anyone know how did it become stronger than Leela so soon... But the good thing is finally Leela has got an equal nemesis.

[@DaneWallinga]

Well NNUE stands for "Efficiently Updatable Neural Networks". Why is the acronym backwards? No idea. But basically it's a particular architecture of neural network where the evaluation can be updated incrementally. As the engine goes down the search tree, it doesn't actually have to recalculate the entire network for each move - much of the prior board state's evaluation can be reused. This makes it comparatively fast, so Stockfish can still do very deep searches. So it's really a whole new approach that's different from what Stockfish was doing before, but is also quite different from what Leela is doing. Leela has a *much* larger network than Stockfish NNUE, and rather than doing an alpha-beta tree search, uses a randomized Monte Carlo tree search. In any case, the reason Stockfish saw such a huge jump is just that it's doing something very novel - it's not just a minor tweak to the previous version. So it was probably going to be either a lot stronger than the old Stockfish, or a lot weaker - it would be quite lucky if a completely new evaluation method resulted in more or less the same playing strength.

[@intermitttence2022]

Dane Wallinga *Much stronger playing strength. Stockfish is now much better at openings because it has NNUE. The only reason why it still seems comparable to Leela is because Leela made monstrous improvements as well.

[@Jozarovschesschannel]

I really love when you guys give such unique comments about this engines. I always learn something new

[@ashesds1]

the other main game changer is actually nnue architecture runs very well on cpu only which makes it much more easily available to end consumers instead of buying expensive gpus for leela or other nns.

[@russianbotfarm3036]

@@Jozarovschesschannel There are google groups where people talk about the engines - 'fishcooking' for stockfish, and 'LCZero' for Leela.

[@danielcastillo9186]

Which match?

[@user-iz7yq1pk4h]

Game 112 watched ❤

[@adventuresofdavid]

I wrote the stockfish code and can't play chess....Leela scattered all the time....get over here...says stockfish!

[@adventuresofdavid]

Brutality! Fatality! Finish HIM!!!

[@jasonz9902]

5:24 I'd love to watch a game between you and Stockfich. Yes you will not lose ( opps edit that to will lose sorry) but that is not the point.I'd watch it and like it and create a new account to watch it like it again. Please think about it.

[@jasonz9902]

@The Deeper Mind I know that he will lose in under 30 moves but it would be fun to see anyway

[@jasonz9902]

I see the problem I here a typo in the post ha hah

[@Wi11daThri11]

"Kasparov should stay out of politics." Yes, agreed!!!

[@Jozarovschesschannel]

😄

[@adamsimpasa330]

Wasn't PCA political?

[@kaiaclifford4307]

Hi Boys 😍💋 💝💖♥️❤️

[@slupylp3090]

Anyone want to be my Boyfriend 😍💋 💝💖♥️❤️