Leela beats official world computer chess champion Komodo – end of era near for Classical engines?

Leela beats official world computer chess champion Komodo – end of era near for Classical engines?


Hi all. I have historically very important
chess game to show you today. Leela chess ID 11089 playing against the great Komodo chess
engine which is a triple TCDC winner as well as the official world computer
champion. In fact it won the triple this year in 2018. It won the world computer
Chess Championship classical, speed chess and also software championships. And it
is the ICGA which organises the official computer championship. The ICGA
is the international computer games Association which has been around for
many many years. So Leela against this great engine playing white here. d4 we
have the first four ply is the Dutch defense with this unusual Queen d3. e6 here Leela is on her own. Now just for
those interested in this opening by the way d5 there is an idea sometimes of a
gambit of g4 to justify the Queen being on d3. A very interesting idea. For example
there’s a game played in Denmark 2000 so they’re both
about 2400 it was a win for white after fxg4 h3 g3 – this position eventually
white won in 38 moves. So there’s some justification for Queen d3 to be
follow up with g4. So anyway in this game we see e6 and Leela doesn’t play g4
here. She actually plays c4 but it’s black which goes a bit crazy now. Komodo
has got a certain positional style. And probably somehow came up that this was a great idea b5. It looks a little bit like a mix between a Dutch defense
and the Benko gambit. It’s clearly evident the light squares are gripped by black
quite tightly here. A normal move like knight f6 – this could be just a fine
looking position and it’s a small edge for white.
Now b5 yes Leela actually takes this knight f6
you can see that the light squares are really in Black’s grip. It’s a very
interesting gambit. Nc3 a6 e3 just letting the pawn be taken
on b5. Not taking on a6 as that would activate the bishop for example looks as though Black
has got some piece pressure so it was actually left for black to take. Queen
takes now we have actually Bishop e7 Whilst it is tempting to play Bishop a6
maybe it doesn’t do too. Maybe the Queen just drops back. Okay castling rights though might be forfeited on the other hand the King might be heading to g2
later. So anyway we have Bishop e7 and the Queen does drop back voluntarily
here. Black castles Knight f3 knight c6 Bishop e2 Bishop a6
now here are after taking I thought that black actually has a really good looking
position because in particular this Bishop seems at this moment it doesn’t
seem to be the most wonderful bishop in the world but White is a pawn up. A solid
extra pawn up and it seems that Leela is often very good at actually
being a pawn up somehow she could make these pawns count when there’s been
fierce pressure out the opening. White castles here Queen a8 and there’s
certainly fierce pressure here both on the a and b files and the light squares
generally. We have a3 If Bishop d2 this isn’t totally
like losing for white. White actually ends up with a small edge even in this
kind of continuation. But we have a3 Ne4 Bd2 here offering
that Bishop. You might wonder about taking. I think this will activate black
too much and there’s gonna be some King side pressure as well. So Leela
isn’t going in for position there’s all sorts of options here
for black so we just just have actually after Ne4 for not
taking we have Bishop d2. But options for black here are interesting. So black
played rook b8 hitting the Queen. On knight takes, is taking that Bishop any
good This position with Nb4 being possible. Because of that battery
against a1 and it ends up. White ends up with a small edge actually for
example this continuation is okay for white. On Nxc3 instead this
is perfectly okay as well for white for example like this is a sample
continuation. White has a nice grip on the light squares here in
fact as well as an actual pawn up. So yeah it seems actually sustainable the
pressure. Queen c2 Nb4 here. Queen drops back Nxc3 Bxc3. Nd5 Qd3 but black’s light squares in particular seem quite
impressive here. The pressure does seem pretty impressive at this moment. Ra4
On Nxc3 it doesn’t really do anything as you might expect
maybe Ne5 and then this. White ends up being a significantly better basically
there’s no major like counter play here so we have actually after Queen d3
we have Ra4 Rac1 Bd6 Rc2 Rb3. Now Nd2 Rb8 Rfc1
so White’s position is looking solid
and still a pawn up. Queen c6 h3 Queen Qb5 yeah volunteering
the Queen’s coming off. Leela obliges and now a nifty Nb1 with ideas of
b4 because the knight is protecting a3 here. Sometimes they’ll
be ideas of b4. We have Rb3. For example if b4 is permitted then this is very nice
you know the knight is holding a3 and then the king can come over a bit this this
is perfectly nice for white. White has got a small edge so we have rook b3.
Bishop drops back to e1 now Nb6 King f1 Kf7 Nd2 kicking
the rook. Knight goes to f3. Some shuffling basically. high-level shuffling
b4 finally so there’s a commitment there. Rook d3 yeah because that
was now hit. So Rd3 Ra8 Rb3 h5.
Bishop d2 yeah Bishop c1 King g3 Be7 h4 looks as though
there’s nothing going on but White is getting a bit more solid here it seems
generally. And in fact here there might be a plan afoot with the e4 pawn break
at some point. Now black played g5 which seems pretty radical and isolates an h pawn. And for me that requires an investigation. Was this strictly
necessary to play g5? Let’s have a quick look at King f7 and this is just a
fictional variation. Rd3 Nd5 Nc4. This is just fictional. White
could play for e4 basically eventually if white plays for e4 this
actually gets to be a very nice position for white. For example this is a disaster
continuation for black so opening up that e-file means activating rooks exposing
other weaknesses in Black’s camp opening up the position so we have actually g5.
Yes it seems a little bit shaky the g5 that’s taken and it gives Leela another
plan now which Leela uses which is to put pressure on that H pawn. But first
reinforcing a3. Okay now taking on d5 another major event – the Knights
coming off and it looks as though there’s a padlock
on on the e4 break. So has that solved a major problem. Now I find this quite
instructive – the game continuation what to look out for here? Okay this is
double pawns and it’s that d pawn which is reinforcing against e4. If
white is able to open up the position sometimes other weaknesses get exposure
because active rooks leads to you know other problems but the paradox is
sometimes you might have to undouble the opponent’s pawns to create that
kind of rook activity to probe for other weaknesses. I think that’s like a key
instructive theme here if white can play for e4. But you’ll
notice first plan A before Plan B is well a bit of a toying plan to put
pressure on h5. We have now King f3 now the rook comes
in as though it’s double on h5. Kf2 Kf7 e6 now we have King e2 King e6 now rook h2 –
instead of King e6 you might be wondering h4 here – White would be better
in this scenario for example like this White is gonna be better in these
scenarios. This is an example where yeah one pair of rooks coming off means some
problems here arising you know there’s a passed pawn – potentially once the pin
can be got rid of there’s a passed a pawn which is on the cards maybe Kd3
first and then move the a pawn without Bb4.
So White has a big advantage there. So King e6 not h4 then the rooks as though
they’re going to be doubling they are doubling in fact. And here this is a
poisoned pawn. Rh7 – a very interesting tactical move actually to
bear in mind. If white takes this yeah because look at blacks last move it
seems to be hanging the pawn but if white actually takes here then rook takes
rook takes Bishop takes b4 bang. Because of this. This is just equal yeah
so we have Bishop c1 and now the that’s protected. Rh3 but now plan B
is to open up the position here very very instructive maybe it’s not the
first thing that springs to mind naturally because you might think well
these pawns are doubled why undouble them? But that is the very plan which Leela is
really interested in here. If you look after all this shuffling now I think
this is the key plan to outline there’s a lot of shuffling and it’s a bit of a
concern that this this sort of shuffling puts these games out of most people’s
radars to check out because this is a really fantastic plan for e4 here in
my view so if we if we can just filter out a bit at the shuffling and get to
get to the instructive bit which is coming up I assure you which is playing
for e4. And you see this f3 now f3 and it also implies maybe g4 but g4 is
never as effective. I’ll give you a sample now here. It looks as though g4
might be worth a punt. All black does is take so you know doubled remain
intact but as an outside passed pawn it’s not very desirable this. So not
g4 so we have rook f8. On Bishop d8 instead e4 here might
actually be valuable so even though the paradox of undoubling the pawns but look
at the rook activity and you might think well there’s nothing for the rook attack
to attack in fact there’s a key threat here of d5. And if that this pawn
moves them as Re6 hitting c6 if c6 has taken out we’ve got two connected
passed pawns so it’s fascinating that this undoubling the pawns by
taking out that pawn on d5 there’s actually d5 is now a legal possibility
which actually breaks further down black’s position
so if black has to play d5 lets just run with d5 then then there’s that but
if black plays rook h7 the fascinating thing here is d5
is very valuable to play so for example this and which rook is helping
against d5 and that’s just for me that’s one of the very beautiful paradoxes of
chess that sometimes undoubling the opponent’s pawns then you get to you
know navigate some other weaknesses basically it creates this balance of
activity versus structure and the activity can be used to probe for other
weaknesses in the opponent’s position now this scenario is very very fictional
this is just a fictional scenario. But it shows that the two connected pawns can
sometimes win against the the h pawn. Eventually white’s actually ending up
unblockading and black’s like getting desperate here
because of b6 so that’s just a winning position basically. So yeah all of these
implications arise with e4 here on Bishop d8. But black actually played rook
f8 and Leela again she’s slowly playing for e4 but e4 is on the cards
it’s really on the cards I assure you by the way black cannot take here on g3
The king is behind it as you’d expect and actually this rook takes g3
check bang oh yeah and there’s rook g8 to pick up the pawn if g2.
And if here then the pawns are dropping in case you’re wondering. So we
have actually e4 as the strategic break basically. Even though it involves
undoubling opponent’s pawns it’s kept in reserve so we’re going over the move 100
point now and it’s here it’s here at move 111 that e4 arrives on the scene And black actually takes with the f pawn. Black is not keen on undoubling the pawns here. Well that goes into an almighty pin
anyway so Bishop d8 pinning White’s pawn If we look at dxe4 this
position here in fact there’s g4 g4 is strong here because after h4 g5
and this is really dangerous. There’s ideas well there’s numerous
ideas but one example was Bishop d6 we could take on e8 and take on here with a
big advantage. Another is just you know – his looks like a nasty pin. Here Rg4
so we have Bishop d8 e5 Rf8 Bishop f4 and you might think isn’t it’s
a liability. Isn’t it a liability this sort of loose piece on h4.
Black actually played Bishop g5 now if h4 in fact there’s e6 here for
example this check and e7 is very strong. This position is pleasant. So h4 doesn’t do too much after
e6 and if hxg3 then yeah we’ve just seen that – e7 –
Maybe if dxe6 Rxe6 King f5 we have rook
takes c6 which gives two connected passed pawns taking out that blockade is
very very important and desirable so here this is just winning for white. This
is a winning position for White here. So we have Bishop g5 challenging the
bishop like that. But now e6 anyway and look yeah White is potentially
getting access to hitting c6 if taking so we have Bishop takes. e7 on gxf4
this is also strong. White has also got a winning position here. The rooks can’t
stop the pawn queening. Very strong totally winning so e7 Re8 gxf4 so this is a very strong
position now. We have you know potentially white if white gets another
move then there’s all sorts of things like Re5 to take on h5. So we have this
d6 – it’s necessary to try and take out one of the pawns and deprive the e5
square but check and now look – access to c6 so this e4 break has given
access to a key pawn now. a3 is protected now c6 it means now two
connected passed pawns on the Queen side It’s amazing to me to be honest
because there’s so much pressure and lockdown from from black’s gambit
positional gambit which Komodo is famous for its positional play. It seemed
entirely justified actually so but look at the outcome here. Two connected passed pawns now because of White’s very interesting breaking the center with e4
Leela is the master of pawn breaks but it’s what those pawn brakes
are connected to. It’s very interesting here to emphasize and underline the Queen side connected passed pawns. So check here h3 a4. They’re just driving
forward and d5 is very weak of course now here are a4 is necessary because
otherwise you can take on d5 immediately because b5 drops and that’s gonna be even. So a4
supporting b5 so d5 is going to drop. “Have the cake and eat it” Rh1 – on
h2 here the King gets in trouble actually white can take and drop a4
because of check and then this threatening mate and this is just just losing
basically. The pawns are all winning. It’s absolutely winning for White. So Rh1 Rh6 and we have Rh4 now.
Check yes – the pawns are being herded. The King could always step
back to b4 as it does now and yeah this is just getting really bad now for black.
This is really going south. This rook and pawn ending.
So we have now b5 dropping. It’s over – the game continues quite a bit
though. As you would expect with Leela games okay so f6 here. Bringing the king up f7 yeah as the pawns are just too much
basically it’s over. And here is a neat finish d8 very neat. Under Promoting a rook now Rfxd8 was played allowing this Queen
promotion. If the other way then Re7 check and then we have rook
d1 check. Rxd8 and Re8 just queening that way. So it’s all
pretty gone now so f8. yeah it’s just over.
And the rest of the game under certain competition rules it would have been
just terminated. The game carries on for a bit. To the death not too long to wait checkmate so yeah I
thought this was a really instructive game. The Komodo engine is a very fierce
engine and has beaten the likes of Stockfish I believe even recently has taken
Stockfish down. Very very strong engine especially I believe on very scalable
hardware. I think the official “world computer championship”
it’s like no holds barred hardware so scalability concerns and everything which
you might not get necessarily in software
I think Komodo is up there but the classical official world computer
championship requires a traditional operator as well and the Komodo team is
there you know they went as a team and you really need to be set up for some
competitions to be able to compete effectively in them. But TCEC has
been regarded as like one of the most important computer chess competitions
and it’s Stockfish which of course dominates that most of the time in
recent years especially this year but it’s still it’s still an interesting
landmark for Leela to beat the Komodo chess engine here. It was a bit of a
quirky opening – an interesting improvisation gambit from Komodo
that b5 that kind of hybrid between the Benko Gambit and the Dutch Defence. Let me know what you thought of this game if it you found it instructive. Comments questions
likes, shares appreciated. Thanks very much. And please check out www.chessworld.net to challenge me for a game 🙂

60 thoughts on “Leela beats official world computer chess champion Komodo – end of era near for Classical engines?

  1. Replayable game with indented variations: https://www.chessworld.net/chessclubs/ltpgnviewer32/ltpgnboard.asp?GameID=5023839&v=ymDA7-hdkKA
    Added to Alekhine's Defence playlist: https://www.youtube.com/playlist?list=PL9JCz2Gsbqe7xdhH151QMn1Ep3Gcy-Vgi

  2. well leela needs a bit more line of code
    all this mooves that repeat for ever, she need a sub routine to tell her try something else. which if we consider also the 50 move rule is important so leela will not get a tie in a winning position.

    what leela need to lean is to play a bit for material, many times she was the edge and still try to play positional
    just use the material advantage leella exchange the pieces , simplify things

  3. Waoow . it is astonishing and quiet promising for tcec matches. I thought top 3 engines could be beaten up again within other top 3.

  4. Progress is amazing.TCEC was not so long ago,and you can see that in a very short time period. Next summer we will all use Leela to analyse our games hahah.Cheers

  5. This was a very important victory for Leela, but the title of the video hints a bit too much optimism. Keep in mind that the opening given to Komodo was a quite weak one which is unpopular even at human level. That said, I am quite sure that as Leela gets better it will be able to take home wins from sound openings too. Curious to see the other game in which Leela won vs Komodo and the opening which was picked.

  6. I find this channel so interesting.
    It sort of replaces human players.
    Why would we be interested in what a human plays when
    we know that chess engines are much stronger?
    This is the future of chess.
    We will be observers of the true masters – computers.

  7. Dear leela.
    I stuck with you from the beggining! I saw great potential in you when others said I could do much better. When we first met you played like you were on drugs so I sat with you through those long hard nights and helped you get better when friends and family told me to find a new girl… They couldn't see what i saw in you but that's THEIR problem! Look at you now babe!…no.. look at US now :^)

  8. I actually think that Leela is actually a good, actually a GREAT chess engine actually. Actually, if she actually beats Komodo, she is actually one of the best actually! She really is actually a beast actually. Actually this was actually all I actually had to say. Just joking KC you're my favorite chess commentator…….. Actually. 😉

  9. Leela wiil be used to give analysis of the WC match in November on chessdom.com see: http://www.chessdom.com/world-chess-championship-2018-live-with-a-neural-network/

  10. leela should get a name that actually resembles the horrors traditional engines go through when playing her. Like Angle-Grinder or Chainsaw Girl. As for now it's just lovely sweet Leela 😀

  11. I wish they'd abolish this portion of the tournament where the first moves are forced. They're just stupid human openings with big flaws. This is a computer tournament, so let the computers play what THEY choose.

  12. KC, please put a troll face in the video every time Leela is trolling 😀 😀 everybody who would like that too, please like the comment

  13. Dear leela.
    I stuck with you from the beggining! I saw great potential in you when others said I could do much better. When we first met you played like you were on drugs so I sat with you through those long hard nights and helped you get better when friends and family told me to find a new girl… They couldn't see what i saw in you but that's THEIR problem! Look at you now babe!…no.. look at US now :^)

  14. That it was advantageous to undouble the pawns is a perfect example of why we should beware of "rules" that we pick up over time. Creativity should win out over dogma.

  15. Great game KC although disagree with the title. SF is the current TCEC champion and while it did lose to K in one game, it still has +2 against Komodo and currently leading the score.

  16. According to Nvidia a single Tesla V100 is the same performance as about 50x Intel Xeon E5-2690 v4 @ 2.6 GHz. Leela is using 4x V100 in CCCC (and 2x V100 in TCEC Bonus). Would Leela still be competitive without this massive hardware advantage?

  17. the correct answer to your question is no it is more the opesite with more time it is leela wich still should worrie and if you want to use you ridiclous time controls set up not even my engine settings but Asmfish 26-6-2018 and you will see totaly the opesite if Leela was any good put it up on test sets and see how bad she fails. yes i would like it actualy would play good chess but she doesn't yet.What i like more is see understand the Kings indian better then most curent engines what you realy should do on your testing use sicilian Najdorf poisned pawn Berlin Defence Grunfeld Indian the start up postion is a 27 year old analyze of me btw but if you keep playing verry fast time controls more the proberly leela evan tualy will be top engine but not at all at long time controles 120min 40 moves or better 4 hours 40 moves cause not many train leela at longer time controles leela will remain weak at long time controlles so i sugest let her play more of these games to make her stronger

  18. Man, after watching a lot of Leela's most recent games, this one seems relatively calm. haha Leela is an amazing engine. Considering this was a match against the reigning world champion chess engine, this almost seemed like Leela played more conservatively as opposed to outrageously. Crazy since that would seem to be a human tactic!

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