You can make other moves, but you can't capture any pieces?
I'm not able to kill the opponent's pieces

Well guys, I was required to restart my computer to fix this problem. Thanks for looking at this problem.
Happy Play Time!

I am playing in my mobile and facing the same problem. It allows to make move but does not allow to kill.

I Cannot KIll!!! This has happened multiple times to me!!!
Since you won that game, it looks like you solved your problem.

its weird its happening with me as well.
i couldnt kill any of my opponents pieces. i continued on mobile the same game and then i could but i lost 2 games on web because i couldnt capture any of opponents pieces.
i guess it has to do something with the browser. i am on Google chrome on a windows 7 machine.
developers please look into this issue.
I'm facing a weired problem today. I'm not able to kill the opponent's pieces. It doesn't allow me to do irrespective of playing with white or black. Does anyone face same kind of problem? Please help.