12v4 question

[Cacarulo]

so in complete zen count index, it says you should hit 12 against 4 when the true count is 1 or lower. im confused if you play blackjack and you get 10, 2 and the dealer shows 4 on your very first hand, then the true count should be lower than 1 unless its a single deck game. if this is the case, should the basic strategy say to hit 12 vs 4?

You're not specifying the number of decks so I'm assuming it's 6D,S17.
One thing is 12v4, which is total-dependent, and another is T,2v4, which is composition-dependent.
For Zen the index is 0 in both cases. If I remember correctly, in 2D,S17 the index is 0 and 1 respectively.

Hope this helps.

Sincerely,
Cac