Leela Chess Zero traps Stockfish in the King’s Indian Defense, Simagin variation | TCEC Superfinal

Featured is game 71 between Leela Chess Zero (LCZero) and Stockfish from the Top Chess Engine Championship, Season 21's Superfinal match of 100 games. The opening is a King's Indian Defense, Simagin variation. I was curious enough about many of this game's alternative human-like moves that it kept my attention for nearly 10 hours. Stockfish's pressure on c4 gave great direction to Leela Chess Zero's play. After some preparation, Stockfish executed a tactical sequence on the queenside. Leela reacted with a deep trap that allowed Stockfish to remain a pawn up, while essentially being a rook down!
Leela Chess Zero 0.28-dev+ 69626 | Rating: 3623
Stockfish 14_202107131735 | Rating: 3639
PGN
1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bg5 a6 11. h3 Bc8 12. e4 Nd7 13. Rc1 b5 14. Qd3 Rb8 15. Bd2 bxc4 16. bxc4 Rb4 17. Nd1 Ra4 18. Rc2 Ne5 19. Nxe5 Bxe5 20. Kh2 Bd7 21. Ne3 Bd4 22. h4 Qe8 23. Rb1 Bxe3 24. Bxa5 Bxf2 25. Rxf2 Rxa5 26. Rb7 Qd8 27. a3 Bc8 28. Rb8 Qd7 29. Rfb2 Qg4 30. Ra8 g5 31. hxg5 Qxg5 32. Rbb8 Qh6+ 33. Kg1 Qc1+ 34. Qf1 Qe3+ 35. Qf2 Rxa3 36. Qxe3 Rxe3 37. Rxc8 Rxc8 38. Rxc8+ Kg7 39. Kf2 Rc3 40. e5 Rxc4 41. exd6 exd6 42. Rd8 Rc2+ 43. Kf3 Kf6 44. Rxd6+ Ke5 45. Rxa6 f5 46. Rh6 Kxd5 47. Rxh7 Kd6 48. Rh5 Ke5 49. Bh3 Rc3+ 50. Kf2 Rc2+ 51. Kf1 Rc1+ 52. Ke2 Rc3 53. Rxf5+ Kd6 54. Rf3 Rc1 55. Re3 Ra1 56. Kf3 Kc6 57. g4 Ra8 58. g5 Rh8 59. Be6 Rf8+ 60. Kg4 Kb6 61. g6 Ra8 62. Bc4 Rd8 63. g7 Rd7 64. Rb3+ Kc7 65. Rb7+ Kxb7
I'm a self-taught National Master in chess out of Pennsylvania, USA who was introduced to the game by my father in 1988 at the age of 8. The purpose of this channel is to share my knowledge of chess to help others improve their game. I enjoy continuing to improve my understanding of this great game, albeit slowly. Consider subscribing here on KZbin for frequent content, and/or connecting via any or all of the below social medias. Your support is greatly appreciated. Take care, bye. :)
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[@testtube173]

How far away do people believe chess is from being completely solved? Is it even feasible?

[@michaelfetter5413]

No one is actually, publically, even trying to solve chess. There is a whole professional industry that does not want chess to be solved. That is why all of these engines start from pre-determined, human positions. If they started from actual scratch, they might play something so extreme as to be forcing, that humans would find absurd. They might (almost definitely) forfeit meta objectives like control of the center. Who knows? The point is - all public engines nowadays are starting from human standpoints. Their progress toward solving the game is ("coincidentally") limited. I expect this insight to be the basis of future videos and topics. I look forward to watching my content be said by more popular voices, to their benefit.

[@FernandoPiancastelli]

@@michaelfetter5413 isn't Leela reasoning the same as AlphaZero, as in, there's no opening theory input, and the engine arrives at opening theory from scratch? AlphaZero and Leela have yet to provide a completely novel opening, or at least play a lesser used one.

[@paulthompson9668]

If processing power continues to advance in accordance with Moore's Law, it will be about 200 years before chess is strongly solved.

[@Radjehuty]

@@michaelfetter5413 they actually do include games with no open book in TCEC. I'm not sure what you are trying to predict as a reason why they always start from human positions. The real reason is purely for entertainment. Non open book games are almost always boring draws. TCEC purposely chooses open books that are imbalanced to see how both engines defend or attack. This has its problems when determining which engine is stronger but it does add entertainment value since nobody wants to watch thousands of draws.

[@Censeo]

To be sure the game is solved, all games possible will need to be looked at up until table bases. That will never happen

[@JoeyDavoli]

I don’t comment often on anything, but I had to pause the video 1/4 of the way through to be certain to commend you on what has quickly become my favorite video of yours. Your passion and joy of the game is apparent, infectious, and scholarly. Thank you for all you do.

[@ChessNetwork]

Thank you very much Joseph. 👍🏼

[@Horzinicla]

@Fluffy Maximus Maximus and Network sittin' in a tree

[@inemanja]

Not bad, but I need to put playback on Giri speed (1.5x)

[@TheSlowPianist]

@@Horzinicla F-I-A-N-C-H-E-T-T-O-I-N-G!

[@sawqs94]

@@ChessNetwork I'm bad at chess but your vids make it easy and fun, where have you been all my life? Take a quick sub.

[@Zhames]

I feel like I benefitted not just from the concrete analysis of this specific game, but also from Jerry’s example of what it means to understand a game more generally. Clearly, it’s about much more than just memorizing all the moves. It’s about asking questions, comparing alternative lines, identifying strategic focal points, and weighing different plans against one another. Thanks, Jerry. Now I feel like I could look at a few games on my own and have at least a rough idea of what it would mean to understand them fruitfully.

[@hiwibaba22]

Thanks Jerry you are so generous with your time and energy. So many people appreciate your work. Have a great holiday season!

[@andrzejgorecki7831]

Thanks Jerry. Very instructive! Qe1 move is super interesting indeed! Interesting how Leela transformed bad knight on the rim into even worse rock on the rim.

[@Nerfgunninja]

Love these engine game analyses! Such an interesting form of the game

[@artjomkorolev222]

Huuge amount of work you've done, Jerry. I do appreciate this kind of videos. Thank you very much indeed to share with us your thoughts and ideas. Looking forward to watching more.

[@The_Irate_Penguin]

Oh, how often have my anthropomorphized rooks stood around staring at each other, asking themselves: "what now?" 10:29

[@RyanC232]

Never change your voice. The calm soothing sounds of your analysis reminds me that not everything is tone dependant. Makes you appreciate the game and life more. thankyou sir!

[@nofanfelani6924]

Wait, 40mins video for a single game? Great!!!

[@crimsonchin142]

I LIVE for these long videos with deep explanation , perfect thing to watch

[@jonshive5482]

So much tactical subtlety in this game 99% of chessplayers simply ain't gonna see it. Goes to show how deep this incredible game is.

[@BauKim]

Get Jerry thank you for the content. I only realized today something very important about your commentary. I really appreciate your discussion of themes rather than simply showing tactics. It really helps me understand the game in a broader sense. Thank you

[@keeper2828]

Another awesome analysis, thank you for sharing this. This is not the first time Leela manages to isolate Stockfish's pieces and this one in particular by leaving the c5 pawn around is very instructive. Kind of reminds me of different positions where you make use of your opponent's blocked pawns to shield your own pieces.

[@mada9891]

14:45 This position is the closest to "box art" I've seen recently. Queen commanding in the center, all pieces on board, white taking more space, etc. It just struck me as pretty cool as a "chess battle" position.

[@EsotericStarWarsRubbish]

Your videos are like curling up with a warm blanket. Thanks for continuing to upload, really excited to watch this game.

[@michaelbaker9347]

Qe1 was excellent analysis! I can't imagine a world where black gives up the "dragon" bishop for a rook, leaving white with an unopposed dark square bishop and dark square holes all around the king

[@Ramuk44]

Your videos about Engine chess are my favorite Jerry, keep 'em coming!

[@Sam-oz8pn]

I love how passionate Jerry is about this game, his excitement at the pawn sac was contagious! It's incredible that he spent 10 hours looking through this one, and it shows; the ideas are beautiful, thorough, and well-presented. Jerry, if you ever get so engrossed in a game again, please share it with us!

[@youuuuuuuuuuutube]

That was top 3 of the most instructive chess videos I had ever seen. That's what genius engines combined with top commentary can do.

[@chrishauser5505]

Love your Leela videos; there is so much depth to these games, and your analysis always helps me understand them better!

[@Dataemil]

A jerry notification, at 4am, with leela chess! Absolutely fantastic! Hype it up yo

[@maxcoy1771]

Always a joy and pleasure to see your insights/commentary on these chess engine games

[@scarletevans4474]

I almost never like watching long videos on youtube, but yours feel like 15m or less, even though they are few times longer! One gets immersed into the chessboard and loses the track of the time! Thank you for all these enjoyable and insightful videos! ♥

[@ethan3038]

Yeeeeeeeessss! These engine games are my absolute favorite series of yours. So glad you are still covering them

[@andybellingham4433]

Excellent analysis Jerry.

[@heffalump111]

I believe many would apprechiate more of these kind of videos, which is to say, engine games, from you.

[@buddydiamond8736]

Jerry I absolutely love your in-depth analysis videos like this one. Your videos alone, above any other content available online have taught me 90% of what I know about opening theory. I can't wait to implement these ideas into my own KID games, especially since I groan every time I see Nf6 g6 after d4 c4. Thanks a lot!

[@user-BlackBear90]

Very instructive game! Love your analysis!

[@adrianok7329]

I love these engine series! By far my favorite Chess video on KZbin. Keep it up!

[@coulie27]

Extraordinary. Thank you for spending the time on this!

[@MoonBurn13]

Thanks Jerry. You study computer matches so we don’t have to! It’s actually your analyses that make these deeply calculated machine games interesting. Did you say some of these sidelines are from your own calculations?

[@ChessNetwork]

I used an engine throughout and tested the stuff I was curious about.

[@mindin2941]

Like the way you break it down. Great commentary and analysis

[@blahsomethingclever]

AWESOME 👍👍👍 miss coverage like this. MORE PLEASE

[@zacharyheflin6794]

Thanks for your analysis Jerry ! Always appreciated !

[@Amethyst_Friend]

A beautiful smooth game, thank you for the excellent analysis.

[@Riuhkuhku]

oh my god thanks for all that work, such well done

[@justinlewtp]

Very good analysis, all my questions on the many variations have been answered in this video, great job!

[@CITAS4U]

Amazingly explained, bro. You're a Capo!

[@ProPiixel]

Incredible analysis. By far the best video on your channel. Keep up the great work Jerry 👍

[@mwgreen3572]

This was so enjoyable and informative, thanks a lot.

[@LevelofClarity]

Thank you for posting this and thank you for the, as always, thoughtful analysis, Jerry. This video with your analysis is gold. Thanks, again.

[@CarloRossiTheGreat]

I can't express how helpful and instructive you are. A real inspiration. Both in chess and general demeanor. You've helped me tremendously.

[@sashaboydcom]

Always fascinating seeing how chess can be played beyond the limitations of human thought

[@DeathEaterLink]

Everything above 1700 level is well over my human thoughts

[@RikMaxSpeed]

Excellent analysis, but I’d love to see the evaluation graph for this game: at what point did stockfish realise it was doomed? where did Leela spot the opportunity? I think these would be helpful cues.

[@jamesdelb6885]

Great analysis! Thank you.

[@noseonscent1935]

Absolutely fascinating Jerry! Awesome video.

[@johngreen523]

Epic analysis Jerry. I thought while watching, "this is what it would look like in a magnus v magnus match" lol TY

[@marnixp.navarro1792]

Thank you!. For your wonderful,entertaining lecture.

[@SuperMegaDima]

Very instructive analysis. Thanks.

[@surisavitri9141]

This is an awesome analysis

[@azamat_bagatov69]

Excellent analysis, pls keep making these videos

[@IMaginatory7232]

Yes, more Jerry covering engine games. This is my favorite kind of video from this channel.

[@danger_donkey]

What a lucid analysis of such a complex game. Bravo!

[@chipurmunki]

Awesome analysis, thank you! Definitely saving this game

[@waleedalawadhi2030]

Very instructive! Well spent time!

[@damonm8204]

what a beautiful game ...Queen e1 wow ... thanks a lot Jerry ... always been a big fan of your work on AlphaZero and his descendant

[@ChessNetwork]

Thank you Damon

[@user-eq3qf6ty6u]

Me: being a 900 pawngrabber Computer: suggests to capture a pawn 12:40 Me: Good boi!

[@TimeisaSquigglyLine]

These engine games with some master analysis are always so entertaining and inspiring!

[@TheMarksT]

Great job with a very interesting game!

[@RyanEmmett]

Very instructive, thanks Jerry.

[@reshad8570]

You are a saint, Jerry!

[@flippert0]

Very insightful!

[@cloesdidier5992]

Always love to watch your videos where you deeply analyse games. Lots to learn and understand the "why" of moves.

[@WtItCbtLoR]

Great study. Thank you, Jerry!

[@mfer134]

Amazing work Jerry

[@chrishimmelmann]

Great stuff, thank you!

[@jamorrison82]

Excellent analysis. I play the KID as black so this was extremely helpful. The in depth variations and well-articulated explanations were fantastic and helpful, because I actually learned things I can use in my own games. Thanks Jerry!

[@chessanalysis64]

Amazing Analysis by a World Class Mentor, Thanks Jerry

[@nicksamek12]

This is the 4th time going through this video, and I've learned a new lesson each watch through. What a game, and what a great analysis of it.

[@frodoraskolnikov196]

Great video Jerry! Qe1 is a super interesting idea.

[@Sack_Zement]

awesome as always

[@mickbeirne3427]

Really interesting and deep. Thanks!

[@AdultChess]

Awesome video!

[@elimwells6131]

That was great, thank you!

[@corruo]

It's been fascinating watching Lc0 vs Stockfish over the years. It seems Stockfish is still stronger through sheer calculation, but there have been a number of games now where Leela has demonstrated a deeper positional understanding that exploits the piece evaluation. Leela seems happy to say "you can keep your rook because is not worth it's full value in this position."

[@roflmatol]

This is hugely understating, if not completely misunderstanding how Stockfish works. No modern engine evaluates positions by assigning "values" to pieces without considering the position like an intermediate player would, otherwise they would not be able to easily beat the best human players. Stockfish crushed Leela in this match, by the way. It was not even close in the end: 19 wins to 7.

[@roflmatol]

Lc0's approach to developing a chess engine also seems to have plateaued. Despite being around for a while now and tons of donated GPU training hours, it hasn't been able to take the crown from Stockfish

[@ghost79ish]

I'm too tired to even grasp this. Crazy, crazy game.... I'll probably have to watch again tomorrow.

[@sexdrugsrocknroll420]

Hey Jerry, thanks for the upload , haven't watched yet, really excited ,u said you watched this all day haha I'm sure this will be a very educational video as I'm sure this will be one that I watch multiple times

[@pranavshinde4247]

Nice breakdown

[@marpawe]

Greetings from Warsaw! Love your work.

[@josephcosco6171]

Wow xcellent breakdowns good job

[@homerp.hendelbergenheinzel6649]

Tanks for sharing. Excellent video

[@mooseminddayan4650]

i cant believed I watched all of that XD. 40 minutes of my life gone. Thanks Jerry. You're the best

[@michelnormandin8068]

Joyeuses Fêtes de fin d'année, Jerry. Keep on the good work!

[@BillyStewartGuitar]

Thank you for the lesson Jerry! Best of the season to you and Merry Christmas from me.

[@ChessNetwork]

👍🏼

[@naturalmystic67]

Nice work, Jerry.

[@peterpetrov6522]

Thx Jerry! This chess channel is really good! For some reason the algorithm always gives me annoying content like Checkmate with a king and rook for 1 second, Fastest 1 min game, 17 knights against 16 bishops--who would win, the best 30 sec game ever. None of this crap here.

[@ChessNetwork]

Thank you Peter

[@OregonMikeH]

Great job here, Thank You!

[@MrSupernova111]

Hi Jerry! I had this video bookmarked for a few days due to the length and I'm glad that I finally got around to watching it. I always learn something new from your videos. There were several instructive positions in this game but the most interesting to me was 7:42 which helped me further develop my strategic planning skills. Thank you very much! Cheers!

[@Chisito23]

Thanks for such a great analisis

[@shantoreywilkins651]

🎩🎯

[@WillToWinvlog]

@@shantoreywilkins651 hat target?

[@danjo6537]

Hi jerry glad to see you doing great I love your analysis Please do more chess computers games analysis 🙏

[@zxvc849]

wow i didnt realize video is 40 minutes long, very nice analysis

[@lain_is_skill]

Great video

[@bobby5776]

Thank you Jerry!

[@rommelfernandez9723]

Well explained

[@chessanalysis64]

Unconventional Thinking and Analysis !!! Thanks Jerry

[@sneak2attack]

Amazing video

[@burakbeyy216]

It is unbelievable how you figured out the reasoning behind even the most unnatural looking moves. Keep up the great work.

[@greyfox3954]

I love this style of content. Very calm and collected thorough analysis with all the sidelines. Similar with the Shogi content from Hidetchi, very appreciate it. Also, is there a video on the Nimzo-Larsen opening, starting with the Knight? I mainly play this :)

[@phen-themoogle7651]

Very very nice commentary, you covered all the questions I had, very easy to follow! thanks :)