Immovable Objects (pieces)

[fredthecat]

I suppose this has been knocke around on many an occasion but I don't seem to visit the forums often.

I've noticed that every now and then when trying to move a piece it reverts back to its starting position.  I am unable to move yet the clock is ticking and the chess problem has not been solved.  I've tried hitting reset and just going to the next problem but you have to take an error on the problem.   

Have others noticed this?  Are you subscribers or non-subs?  I intend to subscribe as this is simply the best tactics site out there. 

FtC

[drahacikfm]

This happened to me a couple times.  I tried to move a piece, and it just pops back to its original square ....   then I noticed that I was in check!  So I was trying to make an illegal move

Never had it happen to me on this site when I was making a legal move.

[angrypirate]

Yes,

Just confirming what Master Drahacik is saying....this only has happened to me when I was trying to make an illegal move.

[fredthecat]

Thanks guys, I'll have to pay better attention next time.