Take-back is for children; no self-respecting player should even think of playing this, not even in an unrated game. For shame.
what is a take back game ?

unratted and you can take back a move if its a mistake ... not everyones cup of tea!!
Thanks for your answer, I was wondering about the same thing!

unratted and you can take back a move if its a mistake ... not everyones cup of tea!!
Thanks for your answer, I was wondering about the same thing!
You take that back this instant, vincentcoffin!
lostapiece your too hard on him ,take that back.....
Within a TAKEBACK game, an extra button "TAKEBACK" is displayed throughout the entire game, alongside SUBMIT MOVE, OFFER DRAW, CONDITIONAL MOVES. Both sides can takeback at any time. When it is your move, clicking on TAKEBACK undoes your opponent's previous move - and it becomes their turn again.
When it is NOT your move, clicking on TAKEBACK undoes your previous move - and it becomes your turn again. This can be repeated all the way back to the beginning of the game. You can't undo CHECKMATE (or once the game is over).
There is no way out of TAKEBACK mode within a TAKEBACK game.