Well looks like same issue as mine,

see the topic 'Unable to enter reversi room' under technical section, that is what I have added.

And for me too its been 2 days since the 5 games (reversi, memory, four in a row, chess, checkers) are not working, rest all the games are working just fine.

Thanks,
practicekitty

Also i am not sure if it is related to gift subscription, because I am not a subscribed member and never had this problemm before, but suddenly 2 days back it started.

practicekitty

Hi,i have the same problem from 2-3 days  i cant connect to play chess.if somebody fix this can help me.Thank you

Me too on checkers - seems to be after I accepted a gift subscription as well a couple of days ago.  I worked around it yesterday, I cant remember how - maybe I looged in again.