Leela Chess Zero traps Stockfish with BLACK

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ChessNetwork

ChessNetwork

Күн бұрын

Пікірлер: 208
@NeilGirdhar
@NeilGirdhar Жыл бұрын
It would be really cool to see *two* evaluation bars: Stockfish's and Leela's. I wonder how long Stockfish thought it was ahead.
@olavbakke2889
@olavbakke2889 Жыл бұрын
Sometimes it's only for one move because it's often unusual moves that gets pruned away quickly that's the winning idea's. If you prune away your opponents best and winning move before calculating deep enough, you obviously lose. After the move is played it has to be looked at and it's way easier to find why it wins. Other times it's a positional squeeze where the advantage just increases slowly. edit: Here it obviously takes stockfish forever to understand what even humans can understand. Stockfish took forever to understand that the rook was in jail and wasn't coming out. An example of the strongest engine struggling with a positional concept.
@tmpwow4282
@tmpwow4282 Жыл бұрын
Well that's what the Lichess analysis is showing. If Gotham chess is to be believed Leela said the position with b4 was -4
@BrennenChua
@BrennenChua Жыл бұрын
I think tcec would have that info if you click the archived game. There would be 2 or 3 simultaneous eval graphs.
@eshneto
@eshneto Жыл бұрын
One of the greatest chess videos ever and this is an understatement. Thank you for this wonderful job, Jerry!
@critercat
@critercat Жыл бұрын
Not many humans would have the patience to wait 60+ moves to capitalize on a trapped rook.
@RyanEmmett
@RyanEmmett Жыл бұрын
Great choice of game! These chess engines are so strong now it's mind boggling. Stockfish trapping it's own rook on b3 was clearly a bad idea to a human, but it took an engine as strong as Leela to show how to punish it. Incredible!
@DosDebug
@DosDebug Жыл бұрын
Indeed engines are engines but the way you’ve reviewed the game, you make it look so easy for humans. This video is amazing. Thanks for your efforts & time you spend making such videos.
@psilocyberspaceman
@psilocyberspaceman Жыл бұрын
Leela played that rook trap like a true master. It was beautiful to watch.
@Rubrickety
@Rubrickety Жыл бұрын
As black, I would have accidentally undefended my b4 pawn about thirty times during that sequence.
@jimohara
@jimohara Жыл бұрын
That’s one of the best games I’ve ever seen
@RoyGazoff
@RoyGazoff Жыл бұрын
Always loved your explanation of ideas in a simple way. And the choice of games as well 👌
@ChessNetwork
@ChessNetwork Жыл бұрын
👍
@kulkidspin7691
@kulkidspin7691 Жыл бұрын
Jerry is the best
@jlsabinas8578
@jlsabinas8578 Жыл бұрын
That was an amazing game! That Stockfish was on the wrong end of it makes it even more amazing; you don't EVER see Stockfish taken to the back of the woodshed like that!
@truwigl3582
@truwigl3582 Жыл бұрын
Fantastic analysis of an incredibly high level game, thanks Jerry.
@Tehbrainlessone
@Tehbrainlessone Жыл бұрын
97% accuracy no blunders VS. 98 accuracy and no blunders. What a story!
@sophon44
@sophon44 Жыл бұрын
Well, Stockfish deeming Stockfish flawless isn't really surprising.
@olavbakke2889
@olavbakke2889 Жыл бұрын
Rb3 is a game losing blunder from a slightly better position. Stockfish is obviously blind to it's own mistakes. Otherwise it wouldn't make them lol.
@mitic8231
@mitic8231 Жыл бұрын
Jerry always delivers good stuff.
@dodekaedius
@dodekaedius Жыл бұрын
It's like watching two super villains fight for dominance over humanity...
@rayawake
@rayawake Жыл бұрын
Yes, great comment
@BBBIW-84
@BBBIW-84 Жыл бұрын
Somehow, as there is no beauty on it
@aggiejedimaster
@aggiejedimaster Жыл бұрын
I enjoyed the pop quiz that had a 68-move answer!
@DiMono
@DiMono Жыл бұрын
After 25 Rb3, Stockfish had the evaluation at 0.7, but Leela already had it at -4.x. Leela knew all the way back there that the game was over. Stockfish sometimes has difficulty recognizing the importance of trapped pieces, and this is one of those times.
@nix4110
@nix4110 Жыл бұрын
What is -4.x? Is that -4?
@DiMono
@DiMono Жыл бұрын
@@nix4110Minus 4.[something] I don't remember what the second part was, so I put x instead as a variable.
@folwr3653
@folwr3653 Жыл бұрын
This is one of the best illustrations of the difference between brute force calculation and a neural network. Stockfish: in twenty moves I still have my rook, so I am OK😊. Leela: I can keep the rook in prison as long as I want 😂, so I am better. Only 45 moves later Stockfish realizes: oops, my rook is not safe anymore and will be taken in twenty moves😮. Leela: told you so!
@pierQRzt180
@pierQRzt180 Жыл бұрын
Stockfish is far away from brute force. There is a ton of pruning going on.
@thedeadbaby
@thedeadbaby Жыл бұрын
but it still is brute force. why didnt it prune the losing rook b3 move? it coulsnt go deep enough to see thar its a move that loses.
@markrobertson3054
@markrobertson3054 Жыл бұрын
Stockfish destryos leela
@kevin27966
@kevin27966 Жыл бұрын
I believe SF uses a blend of lightweight pattern-savvy NN-based position evals + super-efficient calc-based tree pruning. Leela OTOH uses slow & deep NN-based pattern recognition for both eval and tree pruning. The problem for SF is that the worthlessness (and/or eventual loss) of "permanently trapped" pieces lies way beyond the calculation-driven tree-pruning horizon. Leela is trained such that move pruning and pos eval coordinate. Thus once leelas NN gets the faintest hint that trapped pieces are correlated with eventual wins, BOTH her move selection and pos evals will be driven to explore lines that sacrifice material or other positional advantages in order to set and stengthen such traps. And as she trains against herself, she gets better and better at recognizing and using the pattern. Assuming SF also trains its NN with self-play, the recognition of subtle patterns like this (where material payoff is way beyond calculation horizon) will not be reinforced, because efficient calc-based pruning is so quick to discard any branch that sacs material for advantages way beyond calc horizon. What i wonder is: would Leela be a more formidable foe if she was able to learn that SF has this blindspot? Her self-training likely causes her to assume opponent also recognizes the trapped piece pattern (and would actively avoid it). So there are probably a lot of lines where leela could attempt to trap a piece (longterm advantage +3.0) with material sac (shortterm material value -2.0). However, she might also see that the opponont can pass up the sac and refute the trap with a line valued at -0.1. But if she trained against SF and learned its blindspot, she could learn when to expect SF to have no clue that the longterm value of the trap is -3.0 and would almost certainly grab the illusory +2.0 material advantage.
@yrrahyrrah
@yrrahyrrah Жыл бұрын
Leela was just teasing Stockfish at the end: "Look, I can give away 3 queens and I'm still winning!" Btw, love how they let the computers play these games to mate nowadays. I remember when the losing side would just resign, "sparing" some computational energy of the chess computers or something. Maybe it was just them being used to humans resigning and implementing that into computer chess.
@Pat6578
@Pat6578 Жыл бұрын
Thanks for the video! Please make more videos of computer vs. computer analysis, Jerry. They're always so interesting and enjoyable.
@ChessNetwork
@ChessNetwork Жыл бұрын
👍😎
@bobjasper4805
@bobjasper4805 Жыл бұрын
Thank you Jerry .. you are super cool!
@jamesdelb6885
@jamesdelb6885 Жыл бұрын
A brutal squeezing of the trapped rook. That rook was about as trapped as any rook ever was.
@centaurs87
@centaurs87 Жыл бұрын
What a beautiful game, and excellent commentary. "The trapped rook game"
@tfinmoraes
@tfinmoraes Жыл бұрын
What a game, and what an analysis, Jerry! Thank you.
@Hereson
@Hereson Жыл бұрын
Excellent analysis
@Trias805
@Trias805 Жыл бұрын
I like it that the engines don't resign so we get to see the checkmate. This one wasn't interesting, but sometimes you'd love to see it to the very end, but players resign before it happens.
@richardfredlund8846
@richardfredlund8846 Жыл бұрын
very satisfying to see one over arching theme ... where the rook is trapped and eventually taken. re the pawns promoting at the end, I don't really know, but I guess maybe it's making a bee line for some table base?
@bobjasper4805
@bobjasper4805 Жыл бұрын
Correct !! It is still a database app :))
@tr0gd0r0090
@tr0gd0r0090 Жыл бұрын
As soon as I saw Levi post his review I was really hoping to see you cover this! Your leela game videos are some of my favorites
@Trias805
@Trias805 Жыл бұрын
22:12 She wanted extra style points for 3 queen sacrifices.
@alwinteron9949
@alwinteron9949 10 ай бұрын
Leela trolling stockfish
@jerryholder6999
@jerryholder6999 Жыл бұрын
That was a fun analysis, thanks!
@ludwigrevolution3288
@ludwigrevolution3288 11 ай бұрын
The last couple of pawn sac moves was just Leela taunting Stockfish change my mind
@Djdjfjdjuwidjfjfj
@Djdjfjdjuwidjfjfj 7 ай бұрын
most likely that is just how leela has learned to end games, because the entire goal of ML is just to simply win games and not lose, how you do it is irrelevant
@roderickmain9697
@roderickmain9697 Жыл бұрын
Is Leila just trying to demoralise opponents by making two queens that just get captured. "Hey look. I've made two queens - you are just useless"
@DennisAllard
@DennisAllard Жыл бұрын
Not sure if you mentioned it, but this is the first time Stockfish lost as white in two years. Agadmatot covered this game as well, and mentioned that.
@Skry1880
@Skry1880 Жыл бұрын
Jerry is back and so are we ❤
@Tod_oMal
@Tod_oMal Жыл бұрын
This game should be showed in every chess school.
@Joel-co3xl
@Joel-co3xl Жыл бұрын
These engines have endgame databases for all positions with up to 6 (or is it 7?) pieces. So if they see a line that reaches a solved position they will always go for it, even if they have to give up material to get there -- it's safer.
@Aca99100
@Aca99100 Жыл бұрын
I dont think AI engines use endgame databases
@AgnaktoreX
@AgnaktoreX Жыл бұрын
@@Aca99100 Yes they do, these engines are made to win games and with endgame databases you immediatly have the best possible solution.
@Flamewarden_Honoushugoshin
@Flamewarden_Honoushugoshin Жыл бұрын
They really wrote a small novel with this one huh? The 115 page story of "The Hostage Rook"!
@B1G_Dave
@B1G_Dave Жыл бұрын
I love setting 68 move traps
@raymondbizot8893
@raymondbizot8893 Жыл бұрын
i laughed out loud
@ChessNetwork
@ChessNetwork Жыл бұрын
One of the deeper traps out there. 😎
@WtItCbtLoR
@WtItCbtLoR Жыл бұрын
Thank you for the sharing all those insights on this game, Jerry. These analysis videos you're making really boost my chess IQ. It's particularly interesting how stockfish ran its rook aground on b3. I guess even engines can make ill advised decisions.
@olavbakke2889
@olavbakke2889 Жыл бұрын
Interesting case of Stockfish struggling with a positional concept. Goes to show that top engines are still capable of blundering.
@FunnelCakeRyan
@FunnelCakeRyan Жыл бұрын
"Kingside castles, no sides castles" got me :D
@ChessNetwork
@ChessNetwork Жыл бұрын
😎
@a.o.3523
@a.o.3523 Жыл бұрын
It's one thing to move like a computer, but to analyze why they moved where they did...BRAVO!
@preparedsurvivalist2245
@preparedsurvivalist2245 Жыл бұрын
These high level computers REALLY like suffocating their opponents by restricting activity. My perception of how the computer views this strategy is that it seeks to bait the opponent into inadvertently trapping one of his pieces in an attempt to maintain equality. Then it patiently applies pressure with tactics all over the board, understanding the opponent will eventually be a little worse due to a hindered piece. And of course, at some point the position will lead to a decisive material imbalance after the trapped and constricted piece becomes too much of a liability and is either captured or fails to contribute to the game in a meaningful way.
@Paintball5225
@Paintball5225 Жыл бұрын
Thank you Jerry, I really enjoy your content! Keep it up.
@j.503
@j.503 10 ай бұрын
Your commentary was excellent and relaxed. As far as the tactical complications of the chess-playing machines is concerned: whoosh!
@matt96533
@matt96533 Жыл бұрын
Great video. Loved the rook and pawn being trapped
@TheAdarshMehta
@TheAdarshMehta Жыл бұрын
Intelligent analysis as always, Jerry sir! ♥️
@mastrake
@mastrake Жыл бұрын
Thank you! A supper interesting game.
@Tod_oMal
@Tod_oMal Жыл бұрын
World Class analysis. Congrats.
@Cloudland117
@Cloudland117 Жыл бұрын
What a weird ending? Maybe the computer wanted those squares available for its queen? Maybe it just knew it was winning so it stopped caring?
@kingdweeb5065
@kingdweeb5065 Жыл бұрын
On the ending, that seems to be a general problem in neural networks. Theres no more reward than a guaranteed win, so it can start messing around. There are solutions, but they usually dont impact actual performance so no point. Ive seen it pop up independently in 6 mediums and multiple architectures, for example rocket league's nexto bot would stop trying when far enough ahead.
@nullthenightcat
@nullthenightcat 4 ай бұрын
Lazy computers.
@TymexComputing
@TymexComputing Жыл бұрын
O-O-O - Queenside castle O-O - Kingside castle O! - no-side castle :)
@roippi3985
@roippi3985 Жыл бұрын
I like O-no :)
@beereaucrat3233
@beereaucrat3233 10 ай бұрын
so high level... can't make a single mistake or you will be slapped down.
@benashley2955
@benashley2955 Жыл бұрын
I enjoy watching your analyses of these more than those of human games
@Jaylooker
@Jaylooker Жыл бұрын
No need to rush taking a trapped piece
@ginoginoh
@ginoginoh Жыл бұрын
Amazing game, thanks for sharing it!
@thedeadbaby
@thedeadbaby Жыл бұрын
basically the engine is not able to see its blunder past some risdiculous number of moves. brute force conputation doesnt work in many positions
@davidstar2362
@davidstar2362 Жыл бұрын
GREAT JERRY. THANKS
@notices_demons
@notices_demons Жыл бұрын
Hey hotrod, who da funk is Jerry and what does he have to do with the price of tea in China?
@roippi3985
@roippi3985 Жыл бұрын
My personal favorite move is the 54..f3+ clearance sac. Guaranteeing white has two long-term weaknesses, beautiful.
@othomile
@othomile Жыл бұрын
Leela was flossing at the end there lmao
@chrishauser5505
@chrishauser5505 Жыл бұрын
I'm still amused by the bizarre moves the engines make in obviously won endgames. Thanks for another great video, Jerry. You really do a great job on these engine games.
@tjitsekoster9379
@tjitsekoster9379 Жыл бұрын
The difference between winning and losing is 1% accuracy.
@beereaucrat3233
@beereaucrat3233 10 ай бұрын
yes, if you make the slightest mistake, computer will key on it and pry open your position till you collapse.
@michaelmuller5856
@michaelmuller5856 Жыл бұрын
A dumb theory on 22:10 I could imagine Leela being lazy since the position after 104. Rxh1 is down to 7 pieces and an "obvious" table base position for her. On the other hand, she has to calculate any faster mates with 8-pieces and beyond by herself.
@drob9673
@drob9673 Жыл бұрын
Please give us more leela v stockfish
@JonathanGibbs-h2c
@JonathanGibbs-h2c Ай бұрын
Leela finally beat stockfish with black
@ChessNetwork
@ChessNetwork Ай бұрын
Rare! 😎
@redreoicy6698
@redreoicy6698 Жыл бұрын
At the end i guess Leela is taking tablebase in 3 as better than mate in 6
@ramazanhoxha4265
@ramazanhoxha4265 Жыл бұрын
that rook was out of the game so early...
@halidegrlic4683
@halidegrlic4683 Жыл бұрын
this is most complicated analaysis which i know from Jerry .. Greetings from Bosnia and Herzegovina
@GODZIJMETONS
@GODZIJMETONS Жыл бұрын
10:15 What would happen if black would play dxc3 instead of the queen move? The move looks nice (due to opening the diagonal file attacking the f2 square) but complicated to calculate all the following moves.
@sheggle
@sheggle 11 ай бұрын
At the very least you're also freeing the rook tho
@ajaxmajor
@ajaxmajor Жыл бұрын
oh dope another Leela x Jerry vid I can watch 30 times
@SN00888
@SN00888 Жыл бұрын
we are back with neural network chess computers boys! man, i missed these. leela now feels like proper successor to alpha zero, who also used to wreck stockfish. i love it.
@whenthingsfly4283
@whenthingsfly4283 Жыл бұрын
Funny thing is Leela is already far stronger than AlphaZero ever was.
@joeystenbeck6697
@joeystenbeck6697 Жыл бұрын
Possible ending explanation: 50-move rule with pawn leads to the neural net having a slight bias toward getting rid of the pawns. Or favors having open boards, or something. Whatever the case, it isn’t important to play the fastest win if you’re guaranteed to win regardless, so the training could’ve been a bit wonky for completely winning end games
@jonnoel8606
@jonnoel8606 Жыл бұрын
The rook trap literally no human could lay out in advance.
@Tod_oMal
@Tod_oMal Жыл бұрын
A true masterpiece by Leela. Wow.
@pierQRzt180
@pierQRzt180 Жыл бұрын
Lc0 is not really optimized for fast endgames. It gives away material as long as it is not losing
@AgentSmith911
@AgentSmith911 Жыл бұрын
Amazing squeeze by Leela. SF was better out of the opening, Leela reached a drawing position and then managed to see that she was better where SF was blind and suddenly Black was winning.
@moesheri9385
@moesheri9385 Жыл бұрын
thx Jerry 😊
@Andrewthestagehand
@Andrewthestagehand Жыл бұрын
Weird how stockfish didn't just sacrifice the exchange to at least have some counter play. It really liked that rook.
@codegeass7162
@codegeass7162 Жыл бұрын
When did it have the chance to sacrifice the exchange?
@isavenewspapers8890
@isavenewspapers8890 Жыл бұрын
@@codegeass7162Wow, 56 minutes ago. Cool.
@Andrewthestagehand
@Andrewthestagehand Жыл бұрын
There were plenty of times. I can't remember when, rewatch the video.
@alonamaloh
@alonamaloh Жыл бұрын
I think it is possible that the neural network Stockfish uses for evaluation (NNUE) has no way of learning about trapped pieces, given its design. There might be room for improvement by defining some hand-crafted features (e.g., the number of squares each piece can move to that are not attacked by a less valuable enemy piece) and feeding them as part of the input to the neural network. LCZero's network architecture is much more complex and probably has figured out having trapped pieces is a problem.
@oliviapg
@oliviapg Жыл бұрын
Giving away the pawns at the end was just to reach a tablebase position and from there it's just lookups. Not the fastest conversion but the easiest computationally.
@andrew1717xx
@andrew1717xx 8 ай бұрын
Perhaps. 😊
Жыл бұрын
This game really left an impression on me. The first thing I thought was to state a bad Bishop strategy against a dead Rook, but she's not dead, it's worse than that, she still needs protection, time and resources. The bishop is fighting with a rook in agony. Was there not a time to accept this sacrifice in A3?
@cshorler
@cshorler Жыл бұрын
Well I think I spotted 3 of the moves, but probably got the deeper reasoning behind all of them wrong!
@donquixote8462
@donquixote8462 Жыл бұрын
Giving the promoting pawns away freely was really weird. Neural nets must be watching some hyper bullet time scrambles or something.
@Mike_1_
@Mike_1_ Жыл бұрын
most likely because it had already calculated the win without the extra material, so it saw no need to overcomplicate, after all, the only thing neural nets care about is the win, point being neural nets dont care if they win by material at all, the material is just a means to an end
@WayOfHaQodesh
@WayOfHaQodesh Жыл бұрын
So weird when the machines play...
@lifes3ps
@lifes3ps Жыл бұрын
anyone know the opening eval? was this a black advantage opening?
@hmartinlb
@hmartinlb Жыл бұрын
Stockfish 16 gives it around +0.70 with 9. a4 / Qg3 / h4 at depth 40. Move order doesn't seem to matter. So solidly in the "bad line for black" territory. lc0 is of similar opinion
@lifes3ps
@lifes3ps Жыл бұрын
.@@hmartinlb thanks man, had to watch Levi to realize the last time SF lost an advantage position. it was 2 years ago in a sicilian. forgot bout that one. All i remembered was the double win in the trompowski attack even longer ago
@masonthebesttoeverdoitsmith
@masonthebesttoeverdoitsmith Жыл бұрын
This was awesome
@n8style
@n8style Жыл бұрын
incredible game, goes to show what a beast stockfish is that it takes a 60 move deep strategic idea to beat it
@hqcart1
@hqcart1 Жыл бұрын
leela won dude
@arnoudh6203
@arnoudh6203 Жыл бұрын
@@hqcart1 leela sure did. your point?
@Sp00n00n00n00
@Sp00n00n00n00 Жыл бұрын
The reason for dumping the material at the end might just be that it found a book winning endgame with the fewest number of pieces first and just beelines for it rather than searching deeper for a quicker win.
@williamturns1647
@williamturns1647 Жыл бұрын
These kids are so good!
@jamesdelb6885
@jamesdelb6885 Жыл бұрын
There's a game where Alpha gives up the Lopez Bishop for a pawn (just left the B there for a pawn to capture) in an Italian type position against Stockfish in order to trap the Black light squared Bishop and Rook in the corner.. I can't find the game again though I would love to see you analyze that one.
@Hungnguyen-nl6id
@Hungnguyen-nl6id Жыл бұрын
Good job
@pberPSR
@pberPSR Жыл бұрын
as far as chess videos go this one is rated 3862
@favthenewkid
@favthenewkid Жыл бұрын
Why didnt white push on the king side earlier?
Жыл бұрын
Tanks for that. I have watched this game before with Gotham chess and was terrible. I guess we can call this strategy " bad beshop x terrible rook" it's amazing how every pawn it's in a dark square....crazy game
@jangronwald40
@jangronwald40 Жыл бұрын
you know the commentary is brilliant when you yourself come up with the key moves of a 3800 engine while going through the game. thank you jerry!
@scheimong
@scheimong Жыл бұрын
Man this reminded me of that game in 2018/2019 when A0 locked up SF8's queen in the corner. Honestly I still think that one was more aesthetic, but this one is very close (not to mention played at a much higher level of course).
@BamThwok76
@BamThwok76 Жыл бұрын
that was rad
@othomile
@othomile Жыл бұрын
I think they have programmed it to floss if it's completely winning 😂😂
@alexalexis7461
@alexalexis7461 Жыл бұрын
Stockfish is a league above Leela or any other engine, but when it comes to closed positions it still needs to catch up with Leela
@johnvegas806
@johnvegas806 Жыл бұрын
do the computers ever resign
@IschmarVI
@IschmarVI Жыл бұрын
iirc, once the evaluation shifts past a certain point, the engine with the advantage is awarded the win. I don't know the exact specifics on that though.
@abcdefghilihgfedcba
@abcdefghilihgfedcba Жыл бұрын
They’re not coded to ever resign, but tournament organizers can make their own rules saying like “if both engines agree it’s mate in 10” then the game ends there so it’s not a waste of computation power to play the mate in 10 out since they already know it’s lost etc.
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