Blackjack

1. 01

   Build 312 cards (6 × 52) in a fixed order, then Fisher–Yates with floats 0 … 310.

2. 02

   Cards are dealt from the top: player, dealer, player, dealer (hole), then by action.

3. 03

   The whole shoe order is fixed when the hand starts, so the dealer's draw cannot depend on your play.

float(k) and the rest of the notation are defined in the byte stream.

A fresh six-deck shoe is shuffled for every hand. Blackjack pays 3:2. The dealer stands on soft 17 and peeks for blackjack on an ace or ten.

Double on any two cards, including after a split. Split up to three hands. Split aces receive one card each.

Insurance pays 2:1 when the dealer shows an ace. No surrender.

The hint toggle shows the basic-strategy play for these exact rules. Returns are 99.5% only if you follow it.