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How long is the longest possible chess game?


  • 10 months ago · Quote · #21

    NewArdweaden

    On Chess.com it would be 500 moves, you cannot proceed from there.

  • 10 months ago · Quote · #22

    Scottrf

    GSHAPIROY wrote:
    Scottrf wrote:
    ViktorHNielsen wrote:

    Theoretically unlimited, neither player has to claim a draw at the 50-move rule.

    The longest game with a decisive result (1-0 or 0-1) is 250-ish.

    I've had a 350 move decisive game.

    On chess.com?

    450 sorry:

    http://www.chess.com/livechess/game?id=582483469

  • 10 months ago · Quote · #23

    DalaiLuke

    Scottrf wrote:
    GSHAPIROY wrote:
    Scottrf wrote:
    ViktorHNielsen wrote:

    Theoretically unlimited, neither player has to claim a draw at the 50-move rule.

    The longest game with a decisive result (1-0 or 0-1) is 250-ish.

    I've had a 350 move decisive game.

    On chess.com?

    450 sorry:

    http://www.chess.com/livechess/game?id=582483469

    sorry to admit, but I wasted 3 minutes of my life looking at this silliness

  • 10 months ago · Quote · #24

    Scottrf

    Probably as long as it took me to play it.

  • 10 months ago · Quote · #25

    DefinitelyNotGM

    Scottrf wrote:
    GSHAPIROY wrote:
    Scottrf wrote:
    ViktorHNielsen wrote:

    Theoretically unlimited, neither player has to claim a draw at the 50-move rule.

    The longest game with a decisive result (1-0 or 0-1) is 250-ish.

    I've had a 350 move decisive game.

    On chess.com?

    450 sorry:

    http://www.chess.com/livechess/game?id=582483469

    You got a won position and then messed about to make it really long. A human would resign.

  • 10 months ago · Quote · #26

    Scottrf

    DefinitelyNotGM wrote:

    You got a won position and then messed about to make it really long. A human would resign.

    I wouldn't be so sure:

    http://www.chess.com/echess/game?id=61000890

  • 10 months ago · Quote · #27

    ChessisGood

  • 10 months ago · Quote · #28

    MSC157

    Taking about the time... On chess.com it is
    14 (days) × 500 (moves) × 2 (players) = 14 000 days
    which equals
    38 years and 4 months 

  • 10 months ago · Quote · #29

    Nicholas_Shannon80

    The pawns don't need to capture each other. It can capture a piece and move off of its file and allow the opposing pawn "passage." So you only need to subtract a few moves from pawns moving up the board 1 square. It can later capture another piece to return to its original file where it will have clear passage. So how does that add up? Instead of subtracting 400 you subtract 16? Or do you not subtract anything?

  • 10 months ago · Quote · #30

    Nicholas_Shannon80

    Btw, this reminds me of a game where some guy calculated the fastest way to get 6 pawns on a single file. It was pretty funny.

  • 10 months ago · Quote · #31

    johntromp

    The longest possible chess game lasts 5898 moves according to

    http://www.chesschat.org/showthread.php?12548-Longest-possible-chess-game

    At http://www.cwi.nl/~tromp/chess/longest.html you can play through a game that's short by 3 moves...

  • 10 months ago · Quote · #32

    tmkroll

    I thought the pawns getting passed each other might be a bit more complicated than you calculated in actual practice... I admit I thought your number would be further off than 2 because of it.

  • 10 months ago · Quote · #33

    DefinitelyNotGM

    Depends on the time control...

  • 10 months ago · Quote · #34

    GSHAPIROY

    Somewhere from 800-850 moves

  • 10 months ago · Quote · #35

    GSHAPIROY

    Scottrf wrote:
    GSHAPIROY wrote:
    Scottrf wrote:
    ViktorHNielsen wrote:

    Theoretically unlimited, neither player has to claim a draw at the 50-move rule.

    The longest game with a decisive result (1-0 or 0-1) is 250-ish.

    I've had a 350 move decisive game.

    On chess.com?

    450 sorry:

    http://www.chess.com/livechess/game?id=582483469

    AAAAHHHH!!!! AND 10|10 TIME ALSO!!

  • 10 months ago · Quote · #36

    Henryk1

    You all have got the wrong end of the stick. If you only move once every 14 days the longest game could go on for years.

  • 10 months ago · Quote · #37

    NewArdweaden

    Henryk1 wrote:

    You all have got the wrong end of the stick. If you only move once every 14 days the longest game could go on for years.

    According to MSC157: Taking about the time... On chess.com it is
    14 (days) × 500 (moves) × 2 (players) = 14 000 days 
    which equals
    38 years and 4 months 

  • 10 months ago · Quote · #38

    Henryk1

    NewArdweaden wrote:
    Henryk1 wrote:

    You all have got the wrong end of the stick. If you only move once every 14 days the longest game could go on for years.

    According to MSC157: Taking about the time... On chess.com it is
    14 (days) × 500 (moves) × 2 (players) = 14 000 days 
    which equals
    38 years and 4 months 

    You missed out vacation time, but I think that is splitting hairs.

  • 10 months ago · Quote · #39

    MSC157

    Henryk1 wrote:
    NewArdweaden wrote:
    Henryk1 wrote:

    You all have got the wrong end of the stick. If you only move once every 14 days the longest game could go on for years.

    According to MSC157: Taking about the time... On chess.com it is
    14 (days) × 500 (moves) × 2 (players) = 14 000 days 
    which equals
    38 years and 4 months 

    You missed out vacation time, but I think that is splitting hairs.

    Yes, I know. Let's say both players are premium members... Oh god, that's complicated.

    They both have 90 days of possible vacation time. It refills in 45 months (3yr 9mh). But opponent refills it in 42 months of play, because he fills it also during other vacation time. So, unless I'm very much mistaken (and I probably am), it happens exactly 9 times for each player to use vacation time.

    So, 9 (times) × 2 (players) × 3 (months of vacation) = 54 months
    54 months = 4 years 6 months

    So actually it's around 42 years and 10 months. Laughing 

  • 10 months ago · Quote · #40

    Henryk1

    Now that is a long time. You would be pretty fed up if you accidentally timed out after about 40 yrs.


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