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

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

#231

Post by yccs27 »

Disparallel wrote: post #110
AnotherGoodName wrote: post #5

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.

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,…

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).

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

#232

Post by FergusArgyll »

tromp wrote: post #33

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?

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

We should coordinate flights

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

#233

Post by DoctorOW »

teraflop wrote: post #89
nomilk wrote: post #87

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...

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.

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.

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

#234

Post by anthk »

kimixa wrote: post #230
anthk wrote: post #213

Earlier quoted context omitted.

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.

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.

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.

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

#235

Post by rrr_oh_man »

foota wrote: post #199
baxtr wrote: post #184

Earlier quoted context omitted.

It wouldn't surprise me if Ryanair had reclining seats that reclined only if you paid for it.

"Your neighbor is trying to recline, outbid them to stop them..."

One verification can to you, sir, for this chuckle.

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

#236

Post by jbn »

woopwoop wrote: post #4

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.

this is a beautiful zeugma you have here.

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

#237

Post by baxtr »

iainmerrick wrote: post #219
baxtr wrote: post #184

Earlier quoted context omitted.

It wouldn't surprise me if Ryanair had reclining seats that reclined only if you paid for it.

I think the secret of Ryanair is that their goal is actually to make their turnarounds as fast and efficient as possible, not explicitly to make money by adding a fee for every little aspect of the service. If anything can possibly slow down flight boarding, disembarking or cleanup, they'll first try to remove it completely, and only if people object too much will they reluctantly offer it with a fee. Pocket on the s…

Great analysis and insight! Thanks for sharing

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

#238

Post by short_sells_poo »

iainmerrick wrote: post #219
baxtr wrote: post #184

Earlier quoted context omitted.

It wouldn't surprise me if Ryanair had reclining seats that reclined only if you paid for it.

I think the secret of Ryanair is that their goal is actually to make their turnarounds as fast and efficient as possible, not explicitly to make money by adding a fee for every little aspect of the service. If anything can possibly slow down flight boarding, disembarking or cleanup, they'll first try to remove it completely, and only if people object too much will they reluctantly offer it with a fee. Pocket on the s…

I never thought of it this way, but now it's clear.

I found that once I tack on luggage, a seat with more space, etc.. they become more expensive than traditional airlines with the same package.

In other words, their business model really seems to be to cater to the "least hassle" passengers who travel light and don't need any extras.

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

#239

Post by DaanDL »

nostromo wrote: post #181
vasco wrote: post #171

Earlier quoted context omitted.

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.

I think reclining is appropriate at night only. If it were up to me, they would be locked upright during the day.

Night or day is a vague concept on an 11 hour flight

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

#240

Post by notnaut »

close04 wrote: post #228
CalRobert wrote: post #226

Earlier quoted context omitted.

So why is the recline button there?

Mainly because they were introduced when the seats were set farther apart. Now companies squeeze more rows and keep the same seats. But also because with any shared resource there's an expectation of decency involved. Some people just betray that expectation. They're the ones with the mentality that "they shouldn't have served alcohol if they didn't want me to get insufferably drunk", "they shouldn't have put the can…

I’m several inches over 6’ and if I don’t get a fire exit seat I’m highly likely to get seated behind someone who will call me “extremely rude” for wrangling uncomfortably and bumping their seat uncontrollably when they inevitably decide that extra 6 degrees of recline is worth more than my knee cartilage.
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