Double Exposure Blackjack is a variant of blackjack in which both the dealer's cards are revealed to players at the start of the hand. Knowing the dealer's hand provides significant information, and without rules modifications would be advantageous to the player. The main rules changes to provide the casino with the advantage are even money payouts on blackjack (compared to 3:2 at normal tables) and ties losing (compared to pushing in standard blackjack). Other rules changes also exist to the detriment of players. Certain tables restrict doubling down and splitting, and do not allow doubles after splits. The game was invented by Bob Stupak, former owner of Vegas World and Stratosphere casinos. The basic strategy for this game is different, both because the player can see dealer cards 11 to 20 and because the player loses all ties except blackjacks. For examples, two ten-value cards are split whenever the dealer has 13 through 16, and a hard 20 must be hit if the dealer has a 20.
