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Maciej Celuch vs. Leela

Public forum discussion.

#1 · Bill LeBoeuf

18 Dec 2018

Can anyone contact Maciej outside of LG to encourage him to sign up for the about to start Hex Championship?

#2 · Arek Kulczycki

18 Dec 2018

With or witout Maciej, I think the strongest Hex Championship ever has started.

#3 · lazyplayer

18 Dec 2018

I say, we should set up a fund, and the first HUMAN to win a tournament will get the prize! :) :)

#4 · lazyplayer

18 Dec 2018

If leela or gzero win this tournement, then the prize is conserved for next tournament, and so on.

#6 · Arek Kulczycki

19 Dec 2018

Leela messed with my head so much that I cannot even find a good opening move anymore

#7 · lazyplayer

19 Dec 2018

Arek, I'm also unsure what to play as first stone vs shalev. Suggestions? What are the fair choices here? :D

#9 · lazyplayer

19 Dec 2018

Force, Tengen? There is swap rule in hex. :D

#10 · shalev

20 Dec 2018

I downloaded leela and gzero's games to have a look at their opening preferences. They are both pretty varied until at some point in November, where leela started playing consistently: first c2 every game, then more recently a13 every game. Leela swaps a13 if you play it against her, but does not swap c2.

Interestingly, the bots seem to hate most openings on the 'a' column. You can sometimes catch them playing a3 or a4 (they swap a4 but not a3), as well as a10, but never a5, a6, a7, a8, or a9. This is despite the fact that the bots experiment with crazy moves like l3, f3, h3, and (the weirdest one) f2, a nonsense move that leela played several times as recently as November. Gzero sometimes plays k2 but leela never does.

It's unclear whether the bots swap most stones on the 'a' column, because we humans rarely play them either! A while back leela used to *not* swap a5, a6, a7, a8, and a9, but this probably changed recently (the only recent game I can find is this one where leela did swap a7).

I think I will open my games with a10. It's been a while since we've seen it in top level play, even though the equivalent of a10 was the hardest stone to solve on 9x9, and the bots agree that a10 is reasonably balanced.

#11 · lazyplayer

20 Dec 2018

shalev, make a serious effort to win against leela! If you need tips you can ask here, we'll help, heheheh. All humans vs the bot. I'm thinking about 6 g7 in my game.

#12 · lazyplayer

20 Dec 2018

shalev, so you're also rather clueless about A column as first stone. Same here. I'm not even sure a10 is weaker than a9 or a8 or a7.

#13 · lazyplayer

20 Dec 2018

I3, F3, G3, instead, they're reasonable. We tried the corresponding on 11x11 and we've found interesting games. On 11x11 they still win but on 13, who knows.

#14 · shalev

20 Dec 2018

I am trying my best against leela. I just think a10 gives me my best shot. Leela has already shown it can play a13 extremely well, and I think c2 is too weak.

I'm thinking 7. b6 in my game, leading to this. Is that stupid? Is white winning there?

#15 · shalev

20 Dec 2018

Lazyplayer, for your game, 6.g7 looks good but be careful not to delay the joseki too long. How do you plan on attacking the d5 stone? If you're sure you're going to play d4 later, then you might as well play it now. If you're keeping your options open for something like e4, then I guess it can make sense to delay the joseki a little bit.

#16 · lazyplayer

20 Dec 2018

Ehehe 7 b6 is something crazy that I invented in a blitz game against Maciej on playok. I think it's crazy.

#17 · lazyplayer

20 Dec 2018

For my game, my feeling is that the key is finding a refutation of black L6 and black L3 idea.

#18 · lazyplayer

20 Dec 2018

And yes D4 is an obvious choice but I don't want to give away possible future choices. There are a couple more ways to attack top-left for white.

#19 · lazyplayer

20 Dec 2018

6 h5 is the other obvious option in my game. Hmm. 6 g7 is rather crazy to be honest. Beautiful from a purely geometrical point but is it perfect play...

#20 · lazyplayer

20 Dec 2018

6 f9 is the one I like more. Or more precisely, the one I dislike less. In fact I tend dislike every move because I always see plenty of flaws and opportunities for opponent to kill me. :)

#22 · Arek Kulczycki

20 Dec 2018

Worst thing is that the leela-gzero game is total nonsense in my eyes. What were they both doing?

Leela the 4-4 maniac even played 12.f5 to compliment it's 4-4 haha. Later brilliant 18.g5 hahaha. And to conclude 36.e13 to the rescue!

WHAAAT? :D

#23 · lazyplayer

20 Dec 2018

Arek, gzero has played a mess, it's its style, leela is more ordered. And I guess leela must have made an error early in the game.

#24 · lazyplayer

20 Dec 2018

Basically, I think it's just luck, and when playing against leela, everyone need some luck.

#25 · David J Bush

20 Dec 2018

Maciej should show up again in January, when vacation days are restored. At least, I hope so. He needs to play TwixtBot also :-)

#26 · gzero_bot

21 Dec 2018

@lazy maybe if I refactor the code to not be so much of a mess, it will stop playing a mess! :)

#27 · Carroll

21 Dec 2018

Don't you think Leela knows from move 8, that she/it has lost, so then when you are clairvoyant, any losing move seem about the same?

Where is the first mistake if not move 1 ?

#28 · lazyplayer

21 Dec 2018

Caroll, j10 or i10 must be move loss. You can also say that move 2 is the loss and it should have swapped, but I don't agree with this.

#29 · lazyplayer

21 Dec 2018

I've not analyzed in depth eh, I'm just telling you my gut feeling about that game.

#30 · shalev

22 Dec 2018

12. f5 looks like the loss to me. I also didn't analyze much.

#31 · lazyplayer

22 Dec 2018

Shalev, look at Daniel's game vs leela. Not yet over but wow! :)

#32 · lazyplayer

22 Dec 2018

If leela wins, then it's wow for spectacular win. If Daniel wins, then wow for a finding a reasonably simple win. :)

#33 · shalev

22 Dec 2018

Yeah, I've been looking at it. Very curious to see if leela can pull a rabbit out of that hat, her position looks terrible.

Actually, 7. f7 looks so bad that it almost makes me suspect leela is buggy or something...

#34 · lazyplayer

22 Dec 2018

Ehehe, 7 f7 maybe is genial or maybe it's garbage, we'll see shortly. After white 20 f9, then come 21 e9, 22 e8, 23 d9! This is the trick that may save the game.

#35 · shalev

22 Dec 2018

I see what you mean, but it doesn't feel like enough if Daniel plays it right. I could be wrong, we'll see (I don't want to comment in detail in case Daniel doesn't want us to)

#36 · lazyplayer

22 Dec 2018

shalev, we can discuss the variation that has been discarded by leela. what would you do here? I think without this variation, leela was lost.

#37 · lazyplayer

22 Dec 2018

Well, daniel just resigned. My guess is that he blundered with 24 i6. I'm unsure if leela could 21 e9 can do something for leela.

#38 · lazyplayer

22 Dec 2018

Maybe leela can share its own analysis? Maybe leela isn't that strong tactically, but it has good sense of board-wide intuition. :)

#40 · lazyplayer

22 Dec 2018

I think even the bots can miss these "hex brilliances", for whatever they're worth! :D

#41 · gzero_bot

22 Dec 2018

Game #2036019 confused both the bots, they were both intent on fighting out the RHS battle (which was trivial) before diving into the LHS one.  After https://littlegolem.net/jsp/game/game.jsp?gid=2036019&nmove=55, then gzero searched out the LHS and jumped from 60% probability to 95+%.

Incidentally, and FWIW, I updated gzero to a brand new model today (with almost no testing)... and reduced search time to 5 minutes because (a) I don't think it really makes any difference in 99% of the moves it makes, and (b) it is using too much of my computer's memory.

#44 · Arek Kulczycki

22 Dec 2018

No, doesnt work indeed... Dont you dare saying leela is not that good tactically haha

#45 · lazyplayer

22 Dec 2018

Arek, leela played this, and it seems a white win to me. I'm unsure about this because I had no time to analyze it.

#46 · lazyplayer

22 Dec 2018

Maybe I'm missing something, but I see only this continuation or basically equivalent variants.

#47 · lazyplayer

22 Dec 2018

Arek, you miss the simplest thing, you're always looking for magic! :)

#50 · Daniel Sepczuk

22 Dec 2018

Yes, seems like game against leela was mine, but one blunder and I lost. Another intresting game vs gzero