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The chess bot on Delta Air Lines will destroy you (2024) [video]

338 points25 daysyoutube.com
woopwoop25 days ago

Last time I flew Delta they no longer had this bot, which made me sad. One of my favorite parts of flying was getting absolutely crushed into a tiny cube by the airplane seat's easy chess bot, and then again by the airplane seat itself when the person in front of me reclines their seat.

mrandish25 days ago

> then again by the airplane seat itself when the person in front of me reclines their seat.

This reminds me of the time I had my laptop open on the tilt-down tray and the very large man in the seat in front just repositioned his girth (not even reclining the seat) but it flexed the seat back enough that my laptop screen was momentarily caught between the tray below and recessed lip above and was almost crushed.

kimixa25 days ago

That happened to me when I had an ipad in a standing case and the seat in front cranked back - trapping then pinging the tablet across me and by neighbour's lap.

Though the ipad itself wasn't damaged, a couple of glasses didn't make it, and required the steward to try to brush up whatever fragments of glass they could.

I feel that airlines are a microcosm of "Do you care about who you actions might affect?" - similar to the "Do you return the cart to the corral" test at supermarkets - are you willing to put even the smallest bit of effort to significantly improve other people's experiences?

vasco25 days ago

Airlines shouldn't have reclining seats, it's bad design. Blaming people for the bad design is stupid. I never recline and still blame it on the design. Stupid people exist, you should design for that.

+3
sp825 days ago
+3
CalRobert25 days ago
+1
123pie12325 days ago
+1
nostromo25 days ago
+4
baxtr25 days ago
rsynnott25 days ago

This is one thing I like about Ryanair; they don't.

dec0dedab0de25 days ago

I think that they should just make reclining mandatory

spydr25 days ago

> do you care about who your actions might affect

This one surprises me every time I fly. When I have the aisle seat I can be up and out in 10 seconds. It seems to make like everyone else will plop down , place down 3 different liquids on the tray and then take a nap. When I ask to use the bathroom I end up feeling like a nuisance

+2
mywittyname25 days ago
hamdingers25 days ago

Selecting the aisle seat is consenting to be asked to get up, so don't feel bad for asking.

That said, 10 seconds is not a realistic expectation. Ask before it's an emergency.

haritha-j25 days ago

I actually quite liek yanair's no frills no recline design. For some reason it feels less clusterphobic to me. it just feels more spacious and roomy, despite the absence of space.

VTimofeenko25 days ago

And if you are the airline the answer is a resounding "no"

+1
nebula880425 days ago
sejje25 days ago

Gorilla glass vs gorilla

reincarnate0x1425 days ago

(I get the joke) Not even gorillas even, the seats on most US carriers are too small and narrow for a lot of adult men even if they're in good shape. I had to sit shoulder to shoulder with one poor guy an entire flight to New Zealand because both of our shoulder widths are wider than the seats and I wanted to make sure my girlfriend had room enough to sleep. We were both good sports about it and were joking about needing a smoke afterwards, but it was not fun unless he wanted to lean halfway out into the aisle. I'm taller than average but not a giant.

+1
mabster25 days ago
thomc25 days ago

Lost an Apple iBook screen this way. Guy in front slammed his chair back while I was working on a presentation and the screen got caught at the perfect angle to flex it and it died.

Didn't blame him, lesson learned, and I move my own seat back very slowly now.

faidit25 days ago

Scary.. Did the airline comp you for that?

immibis25 days ago

Of course not!

bink25 days ago

I swear this happens to me almost every time I fly.

jack_pp25 days ago

now you know to check who's sitting in front of you. rookie mistake

neal_jones25 days ago

Opened a laptop on my last flight and this was my immediate and persistent fear

VBprogrammer25 days ago

Even when travelling for work I could never bring myself to get a laptop out on an aircraft. I only do it on the train occasionally if I've got something I'm deep into and a table to myself.

crystal_revenge25 days ago

> when the person in front of me reclines their seat.

As a reasonably tall person I have never reclined my seat and will forever consider anyone who does an asshole.

The very fact that you can but don’t do something is the precise space where assholeness is defined.

mjrbrennan25 days ago

This is fair on shorter flights ~1-4 hours, but I am reasonably tall too and I am not suffering through a 14 hour overnight flight without reclining. I don't think there is anything wrong with it in this case, and flight attendants will force people to de-recline their chair in meal times etc.

OlympusMonds25 days ago

Surely you should blame the airlines, rather than the individuals. They cram more people on, giving you less space - but charge the same - and you get mad at other customers, rather than them for cramming you in.

BeetleB25 days ago

> They cram more people on, giving you less space - but charge the same - and you get mad at other customers, rather than them for cramming you in.

Airline fares are very cheap. Just the other day they compared the cost of flying from London to Calcutta decades ago vs now - much cheaper now. You'll see the same when you compare domestic flights.

Yes, it's true that you had more leg room back then. Now you have the option to pay the same high fares and get similar leg room, or be cheap and get less leg room.

Classic example of "more choice leads to more dissatisfaction".

crystal_revenge25 days ago

I pointed out exactly the opposite: surely moral action is only possible when one has agency.

If an airline needs to force you to be a decent person, then you have no right to claim decency in the first place.

People who lean their seats back are assholes. Claiming “but this is permitted!” proves my point.

I can’t imagine what a nightmare world it would be if decency were only possible through the exercise of external authority.

+1
rkomorn25 days ago
BeetleB25 days ago

> People who lean their seats back are assholes.

Clearly, many HN users, as well as much of the population, disagree with you.

You may want to re-evaluate your moral values.

+2
grayfaced25 days ago
monkey_monkey25 days ago

They're absolutely not assholes. People who expect the world to revolve around them and cater for their every whim are probably more deserving of that title.

hackingonempty25 days ago

If you don't fit in the smallest seat then buy a bigger seat. Someone using the space they paid for is not being an asshole.

avh0225 days ago

Tall people don't choose their height, fat people (mostly) choose their weight.

Edit: also, if the airline can't deal with a certain percentile of the population under their normal product, they should figure out how to make it happen. It's discrimination to not account for tall people

lostlogin25 days ago

Could a down voter chime in?

lostlogin25 days ago

I just did that. And having paid an extra $1000 per seat for 3 seats, the airline (Qatar) gave them to someone else.

Neat. Now what do I do?

Typed from a 17 hour flight to New Zealand.

arjvik25 days ago

I personally believe that the ideal situation is in fact everyone reclining their seat

kstrauser25 days ago

I'm about 6' tall, even. In some cattlejets, my knees physically touch the seat in front of me. A lady on a recent flight flung her seat back and I cried out involuntarily in sudden pain.

I understand why she wanted to lean back. And yet, when she did, it freaking hurt. I'm around the 80th percentile in height in the US, and while my doctor says I could lose a few pounds, I wear a men's large shirt so I'm not exactly enormous. Even though they seat can technically recline, you cannot convince me that they're actually meant to.

mjevans25 days ago

Can I have the 5th element padded roller beds that are disinfected between every use?

bschwindHN25 days ago

My ideal airline would be one where you show up to the airport with your luggage, check it in, and then they knock you out and load you on the plane.

You get woken up at your destination after they've taken you off the plane. It would be the closest thing you can get to teleportation.

Then the airline wouldn't have to fuss with preparing shitty food and coffee or deal with annoying passengers. A win for everyone!

+1
cwillu25 days ago
taskforcegemini25 days ago

they had this in "the 5th element"

jen2025 days ago

Not every seat reclines: the one in front of the exit row is a key example.

bluGill25 days ago

I get significant pain when I sit fully upright. If I must fly I need to recline. I've been to a doctor (and had surgery...) but the pain is there and reclining is required for minimal comfort. Deal with it, the seats are small, but my seat is going to affect you, you are just a jerk for thinking you need that extra space.

tayo4225 days ago

I have never come across this opinion until it seemed to have blown up on the internet in the last few years.

kstrauser25 days ago

Seats have gotten smaller. It wasn’t a big deal 30 years ago because you could reclining without mashing the person behind you.

It’s kind of like a yoga studio with mats 3 feet apart when they use to be 6. You’re allowed, and encouraged, to spread your arms out wide, but now if you do you’re going to have a hand in your neighbor’s face. The yoga studio laughs at the visitors arguing about whether one’s an asshole for using their arm space, or for telling others to stop slapping them in the face, when the whole thing is their fault.

nerdawson25 days ago

If I have the option to recline my seat, and doing so is going to make me more comfortable, that’s what I’m going to do.

I can live with the person behind me thinking I’m an asshole.

The airline offers the facility and I won’t sacrifice my own needs for fear of upsetting a stranger.

kstrauser25 days ago

“It’s all about me!”

I suspect they’re not the only person around you who thinks you’re an asshole.

+1
54235423423525 days ago
fleroviumna25 days ago

[dead]

johnyzee25 days ago

The only winning move is not to play.

lapetitejort25 days ago

How about a nice trip on a train?

shermantanktop25 days ago

Depends. How’s the Amtrak chess bot?

+1
bink25 days ago
+2
runarberg25 days ago
dyauspitr25 days ago

I don’t have 5 days to travel across the country.

+6
farialima25 days ago
dostick25 days ago

Why not trei a holiday in Sweden this yër? See the loveli lakes.

mattnewton25 days ago

This wouldn’t bother me as much but it’s really like 5-7 days depending on freight use of the lines and they can’t tell you ahead of time what it’s going to be somehow?

DANmode25 days ago

Can’t bring your work with you?

That sucks.

nimih25 days ago

[flagged]

kazinator25 days ago

Some low cost airlines no longer have anything. A small fold-out tray to hold your tablet. There is Wi-Fi to access an intranet with flight information and maybe some entertainment. If you have that, you just load it up with games from your play store.

reincarnate0x1425 days ago

I prefer the Airbus 31x and 32x models without the entertainment systems so much more. On United the Boeing had fucking ads playing NON STOP THE ENTIRE FLIGHT and because I boarded early I'd try to turn off as many around me as possible because somehow the flying public does not mind bright flashing annoying lights in their faces for HOURS.

jquery25 days ago

This is a United thing, not a Boeing/Airbus thing.

JumpCrisscross25 days ago

> because somehow the flying public does not mind bright flashing annoying lights in their faces for HOURS

We do. United has just positioned their economy products a hair below Delta by, in part, pulling off crap like this.

Dylan1680725 days ago

"somehow does not mind" wasn't about airline choice, it was about people not hitting the off button.

kaonwarb25 days ago

This is increasingly common in domestic US full-price airlines. It makes sense, in a way - most folks have their own devices, and the airlines save money and weight and don't have to worry about future tech obsolescence - but still makes me a bit sad.

kazinator25 days ago

Right? That's why I don't want a car with any system for entertainment, beyond generics like speakers. The car is ideally going to last 25+ years, by which time that shit will be obsolete. The software won't be upgradable, etc.

technothrasher25 days ago

> but still makes me a bit sad.

I'm still sad the movie projectors are gone from the planes, also the little curtains for the windows, and the carve at your seat prime rib service.

jen2025 days ago

The thing I really wish domestic airlines would take away is reclining seats in economy. Nothing good comes from having them.

silisili25 days ago

Same. I most recently flew Frontier and despite looking really spartan, it was actually super comfortable. And no reclining to fret over the whole flight.

+1
1515525 days ago
QuiEgo25 days ago

I've long enjoyed both Alaska's and Southwest's version of this.

_zoltan_25 days ago

Last I flew AA inside the US, I could watch the entertainment content on my own device via the on board wifi. This was great.

adityaathalye25 days ago

> getting absolutely crushed into a tiny cube by ... the airplane seat itself

Perhaps this is the real reason why they call themselves "Delta".

eschneider25 days ago

Yeah...I know some delta pilots and apparently the inflight computers were sometimes spending more time playing chess than flying the plane...

sudokatsu25 days ago

You have 30 minutes to move your cube

jbn25 days ago

this is a beautiful zeugma you have here.

nimski25 days ago

bravo

nomilk25 days ago

There's a bug in the Delta Air Lines chess program. After cxd6 en passant, the captured pawn isn't removed [0]. White's bishop is then able to check the black king through the pawn (the pawn that should have been removed) [1].

[0] https://drive.google.com/file/d/1Nyov4F7eWbT8uNoeclPY8uXVG6f...

[1] https://drive.google.com/file/d/1eEPBHqE5rpefE9gWflgS_hUwYGS...

teraflop25 days ago

I guess it's just a display bug, then? Though it's hard to imagine what kind of bug would lead the game state and the visual representation to get out of sync in that particular way.

DoctorOW25 days ago

They're probably using an OSS chess engine in something like C++, but using HTML/CSS/JS for the interface. 90% moves could be represented by a chess board as a 2D array, checking the engine accepts it as a valid move, and then replacing what's on that square be it empty space or a now captured piece. Castling, pawn promotion, and en passant are the edge cases with en passant being the most obscure.

throwaway3829425 days ago

My guess is they only remove captured pieces on the moved-to square (maybe relying on an implicit capture by overwriting an array entry). This is probably easier than actually tracking pieces that get captured.

dominicrose25 days ago

The game is likely in javascript but because of this bug we know it's not using React because with React the programmer doesn't update the view, React does.

AnotherGoodName25 days ago

I wonder if they gave the chess bot X seconds of thinking time in an era when computers were slower?

The way you set difficulty for turn based game ai is that you limit how far ahead the algorithm searches. If you set the lookahead based on compute time your difficulties will be way out of line if someone upgrades the CPU.

Telemakhos25 days ago

Something similar happened to the macOS chess game, which has always been bundled with OSX/macOS. Once upon a time it was easy to beat in easy mode, which restricted how long it could thing in advance.

When Big Sur rolled out around 2020, Apple introduced a bug which disabled the difficulty slider: no matter what it was set to, it was hard or impossible to beat. In macOS Sequoia, the Chess app got updated again, and supposedly they fixed the difficulty slider, but in the interval silicon improved so much that the old restraints (like think for only a second) mean little. The lowest levels play like a grand master.

mh226625 days ago

is there some reason to implement it as a time limit instead of iterations or something else deterministic? it being affected by CPU speed or machine load seems obvious.

or whatever makes sense if “iterations” isn’t a thing, I know nothing about chess algorithms

twoodfin25 days ago

It’s simpler. Chess is a search through the space of possible moves, looking for a move that’s estimated to be better than the best move you’ve seen so far.

The search is by depth of further moves, and “better” is a function of heuristics (explicit or learned) on the resulting board positions, because most of the time you can’t be sure a move will inevitably result in a win or a loss.

So any particular move evaluation might take more or less time before the algorithm gives up on it—or chooses it as the new winner. To throw a consistent amount of compute at each move, the simple thing to do is give the engine consistent amounts of time per move.

+1
TheDong25 days ago
microtherion25 days ago

A time limit is also deterministic in some sense. Level settings used to be mainly time based, because computers at lower settings were no serious competition to decent players, but you don't necessarily want to wait for 30 seconds each move, so there were more casual and more serious levels.

Limiting the search depth is much more deterministic. At lower levels, it has hilarious results, and is pretty good at emulating beginning players (who know the rules, but have a limited skill of calculating moves ahead).

One problem with fixed search depth is that I think most good engines prefer to use dynamic search depth (where they sense that some positions need to be searched a bit deeper to reach a quiescent point), so they will be handicapped with a fix depth.

Dylan1680725 days ago

> One problem with fixed search depth is that I think most good engines prefer to use dynamic search depth (where they sense that some positions need to be searched a bit deeper to reach a quiescent point), so they will be handicapped with a fix depth.

Okay, but I want to point out nobody was suggesting a depth limit.

For a time-limited algorithm to work properly, it has to have some kind of sensible ordering of how it evaluates moves, looking deeper as time passes in a dynamic way.

Switch to an iteration limit, and the algorithm will still have those features.

microtherion25 days ago

Heh, I was just discussing this some minutes ago: https://news.ycombinator.com/item?id=46595777

Disparallel25 days ago

Getting more thinking time tends to give surprisingly small improvements to playing strength. For a classical alpha-beta search based engine, for a given ply (turn) you might have ~20 moves to consider each depth of the search tree. If you're trying to brute force search deeper, a 10x increase in compute time or power doesn't even let you search an extra ply.

Elo gains for engines tend to come from better evaluation, better pruning, and better search heuristics. That's not to say that longer search time or a stronger CPU doesn't help, it just doesn't magically make a weak engine into a strong engine.

gridspy25 days ago

There is a strategy called alpha beta pruning meaning you can discard a lot of move options quickly based on the results of similar branches. That and caching similar board states means 20x options does not mean 20x CPU time.

333c25 days ago

The comment you're replying to already mentions this.

yccs2725 days ago

True, although better pruning can massively lower the effective branching ratio compared to pure alpha-beta, making the algorithm benefit more from longer search time again (which is why pruning is so important).

Sohcahtoa8225 days ago

Naming it the "Turbo" button rather than making "turbo mode" the default and then pressing a button for "slow" mode, IMO, was marketing genius, even though the results are the same.

Blizzard did a similar thing in World of Warcraft during the beta. After playing for a while, your character would get "exhausted" and start earning half experience for killing mobs. The only way to stop being exhausted would be to log off or spend a LONG time in an inn. At some point, they flipped the script. They made the "exhausted" state the default, and while offline or in an inn, you would gain a "rested" experience buffer, where you would earn double experience.

The mechanic worked exactly the same, but by giving it different terms, players felt rewarded for stepping away from the game occasionally, rather than punished for playing too long. They also marketed it as a way of giving players a way to "catch up" after spending a day or two offline.

exidy25 days ago

The original intention behind the turbo button was to give a way to set the clock speed something closer to a 4.77 MHz Intel 8088 for the benefit of games that relied on CPU cycle timing. Therefore turbo was the default and slow mode the exception.

For some reason this feature persisted in PC compatibles long past having any useful purpose, e.g. toggling a 386 between 33 MHz and 25 MHz. Perhaps manufacturers feared any PC without such a button would be perceived as slower, even though as you say, it's really a slow-down button not a turbo button.

Dylan1680725 days ago

Different senses of "default".

Yes of course you'll keep it on the fast speed as much as you can, not the slow speed. But it's still presented as fast being a bonus rather than slow being a malus.

Nition25 days ago

Alternatively, since there's only one difficulty provided ("easy"), I wondered if the programmer have selected say, DifficultyLevels array index 0 meaning the easiest, but it was actually sorted hardest first.

owenversteeg25 days ago

In short: it plays far too well (~2500 ELO.) People think it originally played at a reasonable level and accidentally got more powerful as the seatback computers got more powerful; the same thing happened to the Mac chess app with the release of the M1.

xxs25 days ago

>Mac chess app with the release of the M1.

That would be exceptionally sloppy development. Phones have had more than enough power for long enough. 4 core Skylake (Mac 2016) would be well beyond human capabilities, if it's just raw power.

The "thinking" (difficult) limit should be considered moves ahead, both depth and count. With a possible limit to time, if there is any time control.

s1gsegv25 days ago

You can code review it for yourself, it’s open source: https://github.com/apple-oss-distributions/Chess/tree/Chess-...

IIRC it does just set a time limit on thinking

Ajedi3225 days ago

> 4 core Skylake (Mac 2016) would be well beyond human capabilities

Not if the computer's time limit is set at 15 microseconds. It's not a question of whether the computers have "enough power"; just whether they are more powerful now than they were previously.

And yes, obviously that's a very sloppy and error-prone way to implement a difficulty control.

dominicrose25 days ago

I'm guessing the app got better precisely because there was a time limit.

epolanski25 days ago

Even a computer from 20+ years ago will comfortably crush Carlsen, it really goes down to the specific engine used, chess engines have evolved a lot during the years.

Carlsen knows how to play anti-bot chess where some engines may struggle, but that only applies to amateurish engines.

ghc25 days ago

> the same thing happened to the Mac chess app with the release of the M1

I fired up Chess shortly after getting an M1 and got destroyed a bunch of times. I thought that I was just extremely out of practice and quit playing for years. I guess it's better to find out late rather than never.

dylan60425 days ago

we used to stress test Macs by running the Chess app full tilt. Does it even make the fans run on AppleSi?

anthk25 days ago

Eh, no. A single Core Duo would be enough to challenge most masters with GNUChess or StockFish, no Apple fanboyism it's needed.

Heck; even Nanochess was rough for a novice like me, and that on an n270 CPU.

_diyar25 days ago

The idea is that there is a time limit for each move, and that the faster processors can do more work in the same time and thus have higher elo.

kimixa25 days ago

I think the issue is that people limited compute time as a proxy for difficulty.

In that case you'll hit issues on any device that performs significantly differently from that which it was tuned in.

Though I am slightly amused by people using the apple chip as an example of "high performance" in a problem that scales very well with threading.

anthk25 days ago

Precisely a Core Duo and a custom build with -O3 -ffast-math (a Chess engine doesn't requiere anything further from integers) and -march=$YOUR_CPU_THERE can yield crazy performance speeds without needing an m4 and a great match even for masters.

markgall25 days ago

Is this really true? I played a few games with it in August. It's not very good.

It's one of those old programs where 95% of the moves are pretty strong. But if you just do nothing and sit back it will occasionally make a random blunder and then you grind it out. I figured it's how they were able to weaken a chess engine back in the day; can't adjust the overall strength, so add random blunders.

I'm only about 2000 on lichess but I beat it pretty much every time, especially once I realized there is no reason to try anything sharp.

strstr25 days ago

My suspicion is that the bot was a fairly standard chess bot, but the difficulties were set based on computation time. As airplane computers got better, it turned into a beast.

As a result, if you tried this on older planes, it might have been “easier”

monster_truck25 days ago

One of my first paid iOS dev jobs was porting a Go game from iPad to iPhone, don't even think the 4 was out yet. It also used computation time based difficulties. By the time I was done writing it, I knew a few tricks I could eke a win out with on 19x19.

When the iPhone 5S came out, I tried it on a whim to check the UI scaling etc... the beginner difficulty on a 9x9 board deleted me. It was grabbing something like 64x more samples per go, the lowest difficulty on the 5S (instant responses) never lost a single game vs the highest difficulty 3GS (15 second turns)

iPhones had a lot of moments like that. Silly bullshit like "what if every pixel was a cell in a collection view" would go from "oh it can barely do 128" to "more responsive than that was, with 2 million" in a few gens.

plorkyeran25 days ago

One of the minor weird things about iOS development early on was just how fast the transition was from the simulator being dramatically faster than actual devices to the simulator being slower than devices. When I started out you’d get things working nicely in the simulator and then discover it’s an order of magnitude too slow on a phone. Just a few years later and my phone was faster than my laptop until thermal throttling kicked in.

throwaway697725 days ago

Chess on M series Macs has the same issue. Even level 1 is easily 2000+ Elo because of the same thing.

microtherion25 days ago

Oh, this led me down a rabbit hole…

I was maintainer of the Chess app from the early 2000s to about 2015. We first noticed in 2004 that level 1 (which was then "Computer thinks for 1 second per move) was getting stronger with each hardware generation (and in fact stronger than myself).

So we introduced 3 new levels, with the Computer thinking 1, 2, or 3 moves ahead. This solved the problem of the engine getting stronger (though the jump from "3 moves ahead" to "1 second" got worse and worse).

A few years after I had handed off the project, somebody decided to meddle with the level setting code (I was not privy to that decision). The time based levels were entirely replaced with depth based levels (which eliminates the strength inflation problem, but unfortunately was not accompanied by UI changes). But for some reason, parsing of the depth setting was broken as well, so the engine now always plays at depth 40 (stronger than ever).

This should be an easy fix, if Apple gets around to make it (Chess was always a side project for the maintainers). I filed feedback report 21609379.

It seems that somebody else had already discovered this and fixed it in a fork of the open source project: https://github.com/aglee/Chess/commit/dfb16b3f32e5a6633d2119...

hinkley25 days ago

I found a used copy of Warcraft 3 at the store about ten years after it came out, proudly brought it home, fired it up and didn’t recall the graphics being quite that awful, but the first time I tried to scroll the map sideways it shot to the far end because they didn’t build a timing loop onto the animation and I shut it down, disappointed.

Unfortunately they never released a remastered version of it. They seem to have made some clone of it called “reforged” whatever the fuck that means.

+1
jasonwatkinspdx25 days ago
+1
bombcar25 days ago
+1
droptablemain25 days ago
barbs25 days ago

Sorry if this is a dumb question but did you patch it to the latest version? I don't know if the in-game updater still works but from memory you could download some sort of patch exe file and update it that way.

+2
psunavy0325 days ago
the_af25 days ago

> they didn’t build a timing loop onto the animation

Wow.

1984 (!!!) IBM PC (DOS) port of the game Alley Cat had timings built it. They actually used the system clock if I remember correctly, so it would always run at the correct pace no matter how fast the computer. Last I checked it, decades later, it still ran at the correct speed!

I guess some lessons don't get passed on?

cwillu25 days ago

There's an SC2 custom campaign that reimplements the wc3 campaign that is worth a look.

afandian25 days ago

I think it means gcc -O0

monster_truck25 days ago

AFAIK the only reason Chess even ships at all anymore is as a burn utility. They'll set it to AI vs AI at max difficulty to stress the system and make sure the cooling/power management works.

+1
microtherion25 days ago
lurk225 days ago

> I'm only about 2000 on lichess

That puts you in the top 7% of players on the site. I have a hard time believing you could get to that rating without knowing that.

jibal25 days ago

They aren't talking about the site, they're talking about their strength (as measured by that site) so it can be compared to the numbers in the article.

Uehreka25 days ago

> I figured it's how they were able to weaken a chess engine back in the day; can't adjust the overall strength, so add random blunders.

In tom7’s Elo World, he does this (“dilutes” strong Chess AIs with a certain percentage of random moves) to smooth the gradient since otherwise it would be impossible to evaluate his terrible chess bots against something like Stockfish since they’d just lose every time. https://youtu.be/DpXy041BIlA?si=z7g1a_TX_QoPYN9b

redox9925 days ago

Such a great video.

sbrother25 days ago

1. Uh, isn't 2000 like extremely fucking good?

2. I played a chess bot on Delta on easy and it was really bad, felt like random moves. I beat it trivially and I am actually bad at chess, ~1000 on chess.com. I wonder if this one is different?

NewsaHackO25 days ago

Yeah, he just casually said he had an elo that high, as if that doesn't blow 90% of people out of the water.

umanwizard25 days ago

Note that 2000 on lichess is probably weaker than 2000 on chess.com (or USCF or FIDE)

dmuino25 days ago

That's true, I'm 2050-2100 lichess, around 1800 on chess.com. Never played a rated tournament but played some rated players who were 1400-1500 rated USCF, and they were roughly my strength, maybe a bit better. Still the Delta bot, easy mode, was much, much better than me.

+2
fragmede25 days ago
citrus133025 days ago

It's still significantly stronger than the average online chess player

mcmoor25 days ago

I heard it's never intended to be the same since initial rating for Lichess and chess.com respectively is 1500 and 1200. So they should have 300 rating difference on average. Quite fitting with what the other commenter claims actually.

+1
reassess_blind25 days ago
Jach25 days ago

This was my experience on a long Delta flight, I don't remember if I picked easy or not but it was laughably bad. I took its lunch money for a game and then turned the screen off. I was mostly irritated by the horrible touch interface, it felt so laggy among other issues. (I don't have a ranking, I barely play these days and usually just in person, but my memory says around 1400 back in the yahoo chess days as a teen but it's probably closer to 1000 now.)

bluedino25 days ago

I wonder if it's different on different planes? I can easily beat my friend and he won a few games on a flight, I played on a different flight and got crushed for two hours straight. I'm probably 1400-ish

mna_25 days ago

What's your name on lichess? Wanna play me?

tmathmeyer25 days ago

Not only is the delta chessbot bad (My low 1600s lichess-elo self can win handily every single time against any difficulty, white or black), but there's also a sequence of moves I found which deterministically causes the game to crash. I should probably record it next time I'm on a flight.

dmuino25 days ago

I'm 2100 rapid on lichess, 2050 blitz and bullet. I got destroyed every single time I played the easy mode version on Delta. It knew opening theory. It did not blunder a single time in the middle game. I never made it to an end game.

gridspy25 days ago

Sounds likely it had an opening book dataset. You just needed a weird opening

mvkel25 days ago

There's only one difficulty setting

ChipopLeMoral25 days ago

If, as people suggest, the difficulty is time based, it would be easier on older planes.

saberience25 days ago

I think you must be talking about something else, the Delta bot in discussion here has about 2500 ELO and basically crushes anyone who isn't a professional chess player.

conartist625 days ago

There used to be a chess program in windows 3.1 that would destroy me every time. Not that I was very good, of course! But I think if you just code the known opening books it's not too hard to make a bot that requires a skilled player to beat.

s3p25 days ago

I am so glad this made first page news on HN!!

Years ago I remember flying with Delta and wondering why the delta bot could beat me in a handful of moves on EASY. Absolutely insane.

tromp25 days ago

Sometimes the airlines chess app gives you the option to play another passenger, but even after waiting for half an hour I've never been hooked up with another player. Has anyone else been able to?

chrisfosterelli25 days ago

Yes, as someone who is usually flying with my GF, I love this feature! Unfortunately air canada's implementation is abysmal and anytime there is a pilot announcement it interrupts the game long enough to break the network connection and cause it to end the game.

tantalor25 days ago

The best part about this is sneaking a look at your opponents screen if you are lucky enough to sit behind them.

cheeze25 days ago

Does this... help with chess?

Nition25 days ago

I think that might have been the joke.

fragmede25 days ago

you can see the possible moves they're thinking of making

DaanDL25 days ago

You can look into their minds? Don't think drawing arrows is a thing on the air line chess apps.

4d4m25 days ago

Super fun

TomatoCo25 days ago

Ah, the Zap Brannigan school.

Grisu_FTP25 days ago

Being one Seat behind instead of one step ahead

nightpool25 days ago

It only works with passengers on your same flight. In practice, it's good for kids in the same family or school group who are sitting across the aisle from each other. I've used it for some of their other games

billforsternz25 days ago

I know I'm getting old when I read comments like this. It wouldn't have occurred to me in a million years that it might pair me with passengers on another flight. I'm conditioned by having first experienced this feature probably 30 years or so ago when pairing to passengers on other flights would have been science fiction.

dheera25 days ago

Aren't they all hooked up to Wi-Fi now? Why the restriction on same flight?

DaSHacka25 days ago

That's how the system was originally designed, before in flight WiFi was common. If they're gonna hook it up to the broader internet and allow playing games cross-flight, they might as well just hook it up to an existing service like chess.com and have a significantly larger user base imo

acomjean25 days ago

one flight I was on had trivia which allowed multiplayer. We ended up with about 10 playing the game. I thought it was a good idea for a networked computer and captive audience.

FergusArgyll25 days ago

Yeah, that's my experience as well. I only did once, and it was against my father...

We should coordinate flights

bdamm25 days ago

Some day we might fly on the same airplane!

YokoZar25 days ago

This reminds me of a bug I reported in 2007 Ubuntu where the default "easy" chess difficulty was too hard. It was eventually fixed in 2014 by using different chess engines. https://bugs.launchpad.net/ubuntu/+source/gnome-chess/+bug/1...

What a world where we have to put significant extra work into making the computer bad enough that a human can compete.

JALTU25 days ago

On the other hand, the poker apps encourage me to consider a career change. I regularly crush the "opposition" with my card-counting skills. World Series of Poker, I am all-in!!! ;-)

stevage25 days ago

Card counting in poker?

brewdad25 days ago

Gotta keep track of how many more cards you get in seven card stud.

LtdJorge25 days ago

Do you mean Blackjack?

ccamrobertson25 days ago

United sadly removed games from its in-flight entertainment so I can no longer trounce 6 year old Magnus.

jfaat25 days ago

I see some chess players so I want to plug the chess coaching app [0] I'm building. I don't know many chess players and could use feedback, but I had been paying for chess.com premium and tried some others and it's always game-level feedback which is insane to me because it's really not that helpful (as evidenced by my abysmal rating.)

I'm running games through stockfish/lc0/Maia and doing some analysis of patterns across multiple games, then feeding that to an agent who can replay through positions and some other fun stuff. Really keen to find out if it's helpful for anyone else!

[0]https://chessfiend.com

taftster25 days ago

I'm going to check this out, as it's legitimately attempting to solve the gap in online chess coaches. As said on the home page, I don't want to know what to play, I want to know why I'm not seeing it or how to think about the move differently. This is the gap and I hope you find success. I'm definitely going to check it out.

taftster25 days ago

But to ask, did you consider "chessfriend" instead of "chessfiend" for branding? "fiend" can carry a negative connotation, which I'm not particularly lining up with in your product.

jfaat25 days ago

I hadn't considered that name specifically but I'm not married to the branding! I appreciate that feedback and your other comment validating I'm not the only person with this problem. Happy to chat more via email (in bio)

guytv24 days ago

I wanted to check it out. After login I am immediately redirected to a page asking for $80/year without me even understanding what the service does. Unrealistic expectation. Show me value first, ask for money later

gip25 days ago

I played the bot (probably early 2025) and wasn't that impressed. I won 5-1 or something like it. I did win one or two local chess tournaments in the past but I'm really not an impressive chess player.

cnlwsu25 days ago

Same. I just played it and rocked it and I am a 500 on chess.com. I think this is older version

muyuu25 days ago

I don't think I've played this bot. I guess the few times I flew in America wasn't with Delta as I would definitely try chess if available.

From what I've seen in the video I'd give the bot around 2100 FIDE equivalent. Granted you don't play bots like you play people. This bot essentially plays top engine moves and every now and then it introduces suboptimal moves. This technique can be played against choosing appropriate openings and being patient with calculation.

runarberg25 days ago

Icelandair’s chess engine was equally brutal (well maybe only slightly less brutal). I played a couple of rounds on medium difficulty only to realize I didn’t stand a chance. I played a few more on beginner, and still lost all my game by blundering some tactics to the engine. Just before landing in Iceland I manage to get one game to the endgame, where the bot finally starts feeling like a beginner (well an advanced beginner) and I got one victory in.

specproc25 days ago

I used to fly a lot of Turkish, and their one's laughably bad. If anyone here works for Turkish Airlines, get yourself a better Chess bot.

tomjakubowski25 days ago

Don't be surprised when you learn their so-called "chess bots" are actually people, lying hidden below the floor of the passenger cabin, moving pieces with the help of levers and magnets.

anematode25 days ago

Sounds like a potential Amazon product.

jibal25 days ago

Sounds like https://en.wikipedia.org/wiki/Mechanical_Turk (because that's the joke).

+1
Dylan1680725 days ago
Terretta25 days ago

Turkish Airlines likes their passengers to feel smart.

hk133725 days ago

I had similar experiences playing the computer in Tzar: Burden of the Crown. It’s not chess but it is a strategy game.

https://en.wikipedia.org/wiki/Tzar%3A_The_Burden_of_the_Crow...

Hydrus_T23 days ago

I don't understand why this post is getting so much attention. What's so special about this specific chess bot? Developing a 2500 chess.com rating level chess bot is by no means a hard task.

efitz25 days ago

Someday a delta engineer will go fix the UI bug where the labels for the difficulty levels were inverted in order compared to the enums used by the chess engine.

whazor25 days ago

Inside entertainment systems it would be nice if you could select an ELO score to play against, with a slider and persona's (like chess.com has?).

shen25 days ago

The Air Canada bot is too easy on medium but hard is unplayable because the computer is too slow at making each move.

lspears25 days ago

This is great