There are two charts depending on whether the dealer hits or stands on soft 17. From top to bottom are the hard totals, soft totals, and splittable hands. To use the basic strategy, look up your hand along the left vertical edge and the dealer's up card along the top. On this page 4-Deck to 8-Deck Blackjack Strategy Introduction Rummy (Blackjack variant popular in Costa Rica).21: Details on the Wizard\’s Simple Strategy.20: Blackjack doubling strategy when doubling after splitting aces is allowed.19: Blackjack splitting strategy when a back-player is betting.18: Basic strategy exceptions for three to six cards.16: Basic strategy when dealer exposes both cards.