Uses a Spanish deck (no 10s). Defaults to Dealer hits soft 17, late surrender allowed, and the Spanish rule “player 21 always wins” (even vs dealer 21 or blackjack).
Bonuses (simple set): 5-card 21 pays 3:2, 6-card 21 pays 2:1, 7+-card 21 pays 3:1. (Bonuses apply to non-doubled hands only.)