Blackjack Cheat Sheet

Basic strategy for Blackjack

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Cards of dealer
Your hand 2 3 4 5 6 7 8 9 10 A
8HHHHHHHHHH
9HDDDDDHHHH
10DDDDDDDDHH
11HHSSSSSSSS
12RRRRRRRRRR
13PPPPPPPPPP
14HHSSSSSSSS
15PPPPPPPPPP
16PPPPPPPPPP
17HHHHHHHHHH
A, 2PPPPPPPPPP
A, 3PPPPPPPPPP
A, 4HHHHHHHHHH
A, 5PPPPPPPPPP
A, 6PPPPPPPPPP
A, 7HHHHHDDRHH
A, 8PPPPPPPPPP
A, 9HHHSSHDHHH
A, 10PPPPPPPPPP
  • H
    means Hit (you should take another card)
  • S
    means Stand
  • D
    means Double Down
  • P
    means Split
  • P
    means Split if you can double after split, otherwise you should hit
  • R
    means Split if you can double after split, otherwise you should hit

Strategy of card counting

Hi-Lo:
Real count: divide your running count value by number of decks. If running count is from 2 to 6 = add + 1, 7, 8, 9 will give you 0 when cards from 10 to King subtract -1

Strategy of K-O
From 2 to 7 = add +1; 7,8,9 shall give 0; when cards from 10 to Ace subtract -1

Hi-Opt strategy 1:
When cards from 3 to 6 = add +1; 2,7,8,9 and Ace shall give 0; when cards from 10 to King subtract -1

Hi-Opt Strategy 2:
2,3,6,7 shall give +1; 4 and 5 add +2; 8 and 9 don’t give anything; from 10 to King subtract -2 Aces are counting separately regardless of main count.

Strategy tips

  • Player is advised to stand if he has got 17+
  • Player is advised to stand on soft 19-20
  • Player is advised to hit if dealer has got 7+
  • Player is advised to hit if he has got 8-
  • When dealer has got 4,5 or 6 player is advised to double if he has soft 13-18
  • If dealer didn’t receive any Ace player is advised to double up with 11
  • If dealer has got 9- player is advised to double up with 10
  • If dealer has got 6- player is advised to double up with 9
  • If dealer has got 6- player is advised to split 22 and 33
  • Player is advised to split AA and 88
  • Player should avoid splitting TT and 55
  • Player should avoid taking insurance
Hand value Probability
of busting
21 100%
20 92%
19 85%
18 77%
17 69%
16 62%
15 58%
14 56%
13 39%
12 31%
11 or less 0%

Cards value

From 2 to 9 – the original value (2 means 2; 3 means 3 etc).

From 10 to King – all cards have got the value of “10”

Ace – either 1 or 11