Doubling: In
Spanish 21, players are allowed to double down on any number of cards, not just on the first two cards -C as in
blackjack. Moreover, some variations of
Spanish 21 allow 'redoubling,' or doubling down on a hand that has already been doubled. ... seven-or-more-card
21 pays 3:1. six-card
21 pays 2:1.
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