Surrender rule (a chance to refuse playing on a box with loss of half of a bet) didn't exist in blackjack from the very beginning. To be more exact, it has been added quite recently and not all the professionals could immediately underwent which profit it brings to the player.
However it all is left in the past. Now it is already calculated how surrender reduces casino advantage, while the basic strategy gives absolutely clear recommendations by circumstances it should be used in.
Moreover, a new online game named «Blackjack Surrender» has been presented in online casinos (perhaps, in some real casinos as well), which surrender is possible at any two cards in. Here we offer you to learn more about this version of American blackjack produced by CTXM company.