61–70 of 162 posts
I wish this discussed the timing arbitration of each move. Based on the packet information (if that is correct & complete) then the timing is done entirely on the clients. However, they show the time in seconds which can't be right so I am curious how accurate this packet schema is (or if those are float values). Regardless, one thing I find maddening about chess.com is the time architecture of the game. I haven't se…
Vladimir Kramnik agrees with your observations about chesscom.
I wish this discussed the timing arbitration of each move. Based on the packet information (if that is correct & complete) then the timing is done entirely on the clients. However, they show the time in seconds which can't be right so I am curious how accurate this packet schema is (or if those are float values). Regardless, one thing I find maddening about chess.com is the time architecture of the game. I haven't se…
> it feels like the SERVER is tracking the time TBH this is what I expected for all online chess. How else to reconcile the two players' differing clocks and also prevent client-side cheating?
So essentially lichess chose StackOverflow approach - (rather) beefy servers, instead of "treating them like a cattle". Interesting that they accumulate and periodically store game state. Unfortunately it is not very clear, where they store ongoing game state - in redis or on server itself. Also cost breakdown doesn't have server for redis, only for DB. BTW, their github has better architectural picture, than overly…
I wish this discussed the timing arbitration of each move. Based on the packet information (if that is correct & complete) then the timing is done entirely on the clients. However, they show the time in seconds which can't be right so I am curious how accurate this packet schema is (or if those are float values). Regardless, one thing I find maddening about chess.com is the time architecture of the game. I haven't se…
- "While these moves could be calculated client-side, providing them server-side ensures consistency - especially for complex or esoteric chess variants - and optimizes performance on clients with limited processing capabilities or energy restrictions." Just a wild guess: might be intended to lower the implementation barrier for new open-source software clients on new platforms, and/or preempt them from implementing…
I wish this discussed the timing arbitration of each move. Based on the packet information (if that is correct & complete) then the timing is done entirely on the clients. However, they show the time in seconds which can't be right so I am curious how accurate this packet schema is (or if those are float values). Regardless, one thing I find maddening about chess.com is the time architecture of the game. I haven't se…
> it feels like the SERVER is tracking the time TBH this is what I expected for all online chess. How else to reconcile the two players' differing clocks and also prevent client-side cheating?
Earlier quoted context omitted.
> it feels like the SERVER is tracking the time TBH this is what I expected for all online chess. How else to reconcile the two players' differing clocks and also prevent client-side cheating?
Track the two clients pings? What client side cheating prevention would you need to do in chess? Afaik you can't cheat by clipping through walls or jumping around on the map.
Earlier quoted context omitted.
> it feels like the SERVER is tracking the time TBH this is what I expected for all online chess. How else to reconcile the two players' differing clocks and also prevent client-side cheating?
Track the two clients pings? What client side cheating prevention would you need to do in chess? Afaik you can't cheat by clipping through walls or jumping around on the map.
I wish this discussed the timing arbitration of each move. Based on the packet information (if that is correct & complete) then the timing is done entirely on the clients. However, they show the time in seconds which can't be right so I am curious how accurate this packet schema is (or if those are float values). Regardless, one thing I find maddening about chess.com is the time architecture of the game. I haven't se…
Seems right.
If you export/download games from lichess, they use the .pgn (Portable Game Notation) format, which is a standard plain-text format circa 1993, used by pretty much everyone for describing a chess game.
Lichess follows the specification to the letter, and as it only technically allows one-second accuracy, lichess only record moves with one-second accuracy. It seems insane, but that's how they do it.
Chess.com also exports PGN files, but they add a decimal place, allowing subsecond accuracy. No one has a problem with this. There is no software which cannot handle this. But Lichess refuses to "break" the spec.
lichess PGN export example:
> 1. d3 { [%eval -0.15] [%clk 0:01:00] } 1... g6 { [%eval 0.04] [%clk 0:01:00] }
Chess.com PGN export example:
> 1. d4 {[%clk 0:02:58.6]} 1... b6 {[%clk 0:02:59.2]}
Earlier quoted context omitted.
> Unfortunately, I'm afraid, drawing something like that during interview may not land a job at faang =( Yet another reason to be skeptical of the quality of hiring in faang if anything.
Why feel anything about it at all? You work at FAANG: be glad for the money or quit if there isn't any. You don't work at FAANG: bad hiring makes it easier for you to get hired and make money.
Looking at second-order effects, many companies look up to FAANG for "best practices", which often includes them blindly copying their hiring practices. Without feeling or calling out any healthy skepticism, the software hiring world becomes a worse place overall.