Section 5: Scoring & Winning

Schedule 2, section 2 gives blackjack priority as a specifically defined opening hand: an ace and a 10-value card received as the first two cards. A three-card total of 21 is a valid total but is not a blackjack.

Source: section 5, section 2, section 14, section 15, Section 15, section 24, section 25, Section 25, section 22

Send this to your friend — argument over.