Fencer: Thanks a lot for your infos Fencer, I appreciate the fact that you verified the code. I will still use Fischer's clock as it works pretty fine to me.

speachless: I don't think we have a general problem. Mostly because:

1) Fischer's Clock had been introduced many years ago and nobody ever complained about any suspicious behaviour. Yes, there were some complaints but they had been caused by misunderstanding the concept of this feature.

2) No problem of this kind ever happened to me, not even during the test phase. I am sure that a serious anomaly would have been discovered a long time ago.

3) Although I don't have time for a serious and thorough investigation, I've had a quick look at the source code. Everything seems to be normal and as it should be.

So, my best guess is that aaru was unlucky to find a specific combination of parameters that causes the issue he described. Unfortunatelly I cannot provide more information at this moment.

Fencer: Dear Fencer, do we have a general problem with Fischer's clock? Aaru is loosing lot's of them 'cause of time out, but in all of them the bonus time didn't work.... i use to set Fischer's clock on my new games/tournaments, but if it doesn't work in general or is it a singular error that occured several times to aaru?....... (aaru posted here various issues on his time-outed games)

thanks for taking care

It is very difficul.
+1000 games
It is not possible to notice all details.
Other thing. When you play on Android, you have no idea about time per move...

aaru: You are right, of course, but if you had noticed, it could help pin down the bug. If it was showing correctly the incorrect time limit then it is a calculation bug but if not then it would be a more difficult bug to find.

ThunderGr: I have no idea. Even it was 1 minut -> still should be 18 hours & 1 minut

aaru: Where you playing on time limit? How much time did you have after your last move? Had you noticed?

aaru: I see. Thank you for clarifying this.

aaru: Thanks for taking the time to explain this, I never could quite get my head around the Fischer clock and the time-out rules.

ThunderGr: You're wrong. In that case, the game should have ended on April 24
Pls read sth more about FC ->

http://www.chesscentral.com/chess_clock_how_use_a/157.htm


"Let's look at an example of a player's time usage (and his corresponding clock display) across the first few moves of a 40/20 Fischer increment game.

The White player at the start of such a game has "40:00" showing on his digital clock, which means that he starts with forty minutes in which to make all his moves. Black hits his button to start White's clock (and to start the game). White already knows what he wants to play, makes the move 1.e4, and hits his clock to complete his move. Three seconds have elapsed between the time Black hit his clock to begin White's move and White hitting his clock to end the move.

In a traditional "sudden death" game, White's clock would read "39:57" (showing that three seconds had been used) and that would be it. But since this is a "Fischer" time control game with a twenty second increment, the digital clock has been pre-programmed to add twenty seconds back to a player's time whenever his button is pushed. Thus twenty seconds gets added to White's clock when he presses the button to finish his move, and the timer's display now reads "40:17" (his initial 40 minutes - the 3 seconds he took to move + the 20 "bonus" seconds of the added increment):

40:00 - 0:03 = 39:57
39:57 + 0:20 = 40:17

Black plays 1...e5 and hits his clock to end his move and start White's timer. The White player snaps off 2.Nf3, again taking three seconds to make his move and hit the button on his timer:

40:17 - 0:03 = 40:14
40:14 + 0:20 = 40:34

...and so White has actually gained 34 seconds since the game's start because he's playing pretty quickly.

Black bangs out 2...Nc6 and hits his clock. The White player already knows he wants to play a Ruy Lopez and plays 3.Bb5, again taking three seconds to make his move and hit his clock:

40:34 - 0:03 = 40:31
40:31 + 0:20 = 40:51

White's picked up nearly a full minute - he now has nearly 41 minutes to make all the rest of his moves.

But Black has other ideas; either by design or by accident, he doesn't play the standard Ruy reply of 3...a6 and instead plays 3...Nf6. This throws White for a bit of a loop as he hasn't prepared for this move. He eventually figures out a reply but takes a full two minutes and thirty-four seconds to think, make the move, and hit the button on his clock:

40:51 - 2:34 = 38:17
38:17 + 0:20 = 38:37

...and White now has 38 minutes and 37 seconds left on his clock to make all of his moves before he'd "lose on time".

I've played quite a few online games using the "40/20" Fischer increment and discovered that, on average, each player usually uses about an hour to play; this is a good increment to use when you have about two hours to play a game. For a faster game you could easily start with a shorter "sudden death" time or a shorter increment (or both, such as "20/10": twenty initial minutes with ten seconds added each move). A few algebraic equations have been published which let you approximate the time a game will take when using a particular Fischer time control; although it's impossible to predict infallibly the length of time which a (theoretically) open-ended game will take, these equations can at least give players a "ballpark" idea of the expected duration of a game.

Fischer increments were officially recognized by the United States Chess Federation for tournament use starting in the mid 1990's. This caused a fair amount of contoversy at the time since players had to replace their analog clocks with (then more expensive) digital models. That initial furor has died down over time, but you'll see many players still using their analog clocks for casual "sudden death" games at chess clubs or between rounds at chess tournaments. (In fact, an analog clock is still my choice for "speed" games with my friends and family, since anyone can understand how to set and use one without any special instructions.)"  

In BrainKing we have 3 parts of Fischer's clock - A/B/C:
A - time for move (on the beginning of game)
B - time added after each move
C - maximum time for one move

Example #1 -> 30days/1day/30days

Games started at 8am. Your move at 9am
30 days - 1 hour + 1 day -> 30 days (because in C we have 30 days)

Example #2 -> 21days / 18hours / 31days 23 hours

Player X - dead time at 5pm, moved at 4:40pm (20 minuts before dead line)
20 minuts + 18 hours -> 18 hours 20 minuts

moistfinger: Maybe so, but, if I am not mistaken, the 3rd number in the fischer clock indicates the *absolute limit* of the game. That is, despite of what the other 2 numbers say, the game cannot exceed the *total* of the 3rd number. So, a game with a 30 days limit will end at the 30th day, no matter who's turn is to move at that time.

ThunderGr: Time limits are way too generous here, it's a bit of a joke. Some players wait until the very last moment before time-out to make a move, it's really quite sad. As far as I'm concerned slow players kill game websites, they suck all the enjoyment out of the games, makes everyone lose interest after a while. There are more and more of these guys here on Brainking (I'm not naming names but I'm itching to!). I have my own theory as to why.

aaru: The game had started 24/03/2014 with a 30 days limit, aaru. I think this is your problem. You should pay more attention to the time *limit* of a Fischer clock.
It is not just the 18 hours bonus, you know. It does not look like a bug to me.

game 6663653
Last move of my opponent: 2 June 2014, 17:25:25. Time out -> 2 June 2014, 19:40:00. 2:14:13 hours after move of my opponent !!! (FC with 18 hours bonus)

Fevga (AlterMann vs. aaru)

Ps.
Strange - I cannot put next picture to my Bug gallery.

aaru: When had the game started? I can see there is a 30 days limit.

game 6663440
Last move of my opponent: 1 June 2014, 17:59:00. Time out -> 2 June 2014, 02:50:00. 8:51:00 hours after move of my opponent (FC with 18 hours bonus !!!!!!!!!)
http://brainking.com/pl/PhotoAlbum?alid=2160&phid=16462
Nackgammon (AlterMann vs. aaru)

crosseyed: It would be my pleasure!

baddessi: When you do we must meet up.

crosseyed: thanks! Maybe next time to UK. Haven't seen any of England except for Heathrow

baddessi: Have fun.

ketchuplover: thanks. Very excited

baddessi:

You go girl

crosseyed: yes, going on a 12 day tour of Ireland. I will only be in England long enough to catch the plane to Dublin. WE are so excited!

baddessi: Will you be visiting the UK?

Bernice: as for the possible new owner of BK, I have nothing but respect for Fencer and all he has done to create and maintain this awesome game site, but if it changes hands, I will be happy to help the new owner in any ways I can

Bernice: Thanks Bernice! I will be on the lookout for rich Irish men for you!

Marshmud: um...I am going BECAUSE of Bushmills Friday!

Very much looking forward to meeting my Irish friends!

Wish you were actually going to be there with the pony mailitia, Jim. WHat a great time that would be!

baddessi: I hope you have a great time in Ireland over the next few weeks. You and the hubby will enjoy the beautiful countryside.. Don't let Geomomo try to trick you into buying his goats and beware of Bushmills friday.

baddessi: enjoy your holiday you lucky thing :) and maybe by the time you get back there will be a new owner of BK and that could be one of the things that could be fixed ;)

ThunderGr: no apologies needed. you sent me to the right place, unless you know of a place to set days off.
Thank you for you help!

baddessi: I confused the vacation days with the days off setting, obviously. Sorry.

Bernice: The only option I saw was to click on auto-vacation. I have 35 days left so it should be fine.
I remember in the past you could set actual days, but auto will be fine.
Thanks everyone for all the help! I will be gone the 4th thru the 20th if I time out, then sorry!

baddessi: you cant set any more...if you dont make a move on time it comes off an hour at a time I think....

baddessi: Actually, I don't think you can anymore, it's auto-vacation for everyone after the last change. But I could be wrong.

baddessi: It is under Settings -> Calendar

I haven't set vacation days for a very long time. Looked under settings and can't find where to designate vacation days. Any help greatly appreciated!

beach: Thanks, I've always wondered about that.

ketchuplover:  they were probably a knight or a rook and their membership expired so now they are a pawn

a brain pawn member have 791 started games? tyia

BGBedlam: Indeed

aaru: There seems to be a common thread running through all these examples you keep giving us aaru!

game 6667785
Last move of my opponent: 26 May 2014, 12:50:55. Dead time -> 26 May 2014, 23:09:00. So 10:18:05 hours after move of my opponent (FC with 18 hours bonus)
http://brainking.com/pl/PhotoAlbum?alid=2160&phid=16459
Tryktrak (AlterMann vs. aaru)

winterangels:

Hope it was angelic...and that you savored your angel's food cake...or was it devil's food cake?

winterangels: Happy Birthday. It is mine on the 29th.

Its mine today

Roberto Silva: LOL......I only have a couple as I have better things to do these days LOL...but someone is being a smart ----. But life goes on :)

Pedro Martínez: If a few of my games diappeared, I probably wouldn't notice...

Carpe Diem: I do confirm that one of my games has mysteriously disappeared indeed... Not that I care much... we can start a new one...

Bernice: Some kind of glitch, or error on the part of a player, seems much, much, much, much more likely then someone maliciously choosing two of your games to delete.

coan.net: NO...half way through games and they dissapear....someone deleted them. One was with Dolittle, and the other with Pedro Martinez....