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✅Reviewed by CasinoCalc Research Team
·🗓Updated April 28, 2026
·game guide21 3 blackjack — Guide & Strategy
21+3 blackjack combines classic blackjack with an exciting side bet. Win extra payouts by hitting specific card combinations.
What is the 21+3 bet?
A side bet using your first two cards plus dealer's up card. Matches pay up to 100:1.
What's the best 21+3 strategy?
Bet strategically on flush, straight, and three-of-a-kind combinations for highest payouts.
Pro tip: Place 21+3 bets on strong starting hands for maximum winning potential.