I already reported this bug to chess.com, but thought I would share my experience here.
Basically last night I was playing a few rapid games before going to sleep. On my final match of the night, I clicked "Game review", and to my confusion it took me to a game played by "guest" users.
This is now the game that is displayed under my "completed games" as well. You can check my profile to confirm this if you want to.
Note this guest game is not played by me, nor my opponent. I can't even find the original game now. I also get a 500 internal server error now when trying to look at my full "completed games" list.
My best assumption is I encountered a "game id" collision.
I'm just guessing here, but It seems game ids are (externally) identified by an 11 digit number (just based on my observations looking at game id's on chess.com). Because of the Birthday problem, this will result in a super high chance of game id collisions after a few hundred of thousands games, which I'm sure chess.com easily achieves.
If this is the case, I'm surprised this doesn't happen more often? Since it (hopefully) does not, I wonder what other issue could have caused the bug I'm experiencing. 🤔
It's a known issue and staff are working on fixing the problem for those members that were impacted.
I already reported this bug to chess.com, but thought I would share my experience here.
Basically last night I was playing a few rapid games before going to sleep. On my final match of the night, I clicked "Game review", and to my confusion it took me to a game played by "guest" users.
This is now the game that is displayed under my "completed games" as well. You can check my profile to confirm this if you want to.
Note this guest game is not played by me, nor my opponent. I can't even find the original game now. I also get a 500 internal server error now when trying to look at my full "completed games" list.
My best assumption is I encountered a "game id" collision.
I'm just guessing here, but It seems game ids are (externally) identified by an 11 digit number (just based on my observations looking at game id's on chess.com). Because of the Birthday problem, this will result in a super high chance of game id collisions after a few hundred of thousands games, which I'm sure chess.com easily achieves.
If this is the case, I'm surprised this doesn't happen more often? Since it (hopefully) does not, I wonder what other issue could have caused the bug I'm experiencing. 🤔