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PART I
Blackjack Formula
The Blackjack Formula by Arnold Snyder

BA + PA + RA + SA = % PROFIT
BA = Betting Advantage
PA = Playing Advantage
RA = Rule Advantage
SA = Starting Advantage
SA = DA + v
h = number of units of high bet
n = number of decks
c = percent dealt out
x = number of extra players
BC = betting correlation
PE = playing efficiency
v = sum of effects of rule variations
DA = deck advantage

STARTING ADVANTAGE BY NUMBER OF DECKS

DECKS DECK ADVANTAGE
1 + .02
2 .31
3 .43
4 .48
5 .52
6 .54
8 .58
9  

EFFECT OF RULE VARIATIONS BY # OF DECKS
    DECKS
  Variation 1 2 3 4 5 6
(1) No dbl on 11 - .820 - .775 - .760 - .753 - .748 - .745
(2) No dbl on 10 -. 150 - .480 - .470 - .465 - .462 - .460
(3) No dbl on 9 - .130 - .103 - .094 - .090 - .087 - .085
(4) No dbl 8,7,6 .000 .000 .000 .000 .000 .000
(5) No soft dbl - .130 - .107 - .099 - .095 - .092 - .091
(6) Hits soft 17 - .190 - .205 - .210 - .213 - .214 - .215
(7) No splitting non-aces - .014 - .027 - .031 - .033 - .034 - .035
(8) No splitting aces - .160 - .170 - .173 - .175 - .176 - .174
(9) No splitting non-aces - .210 - .230 - .237 - .240 - .242 - .243
(10) No hole card - .100 - .108 - .110 - .111 - .112 - .113
(11) Dbl after splits +.140 +.140 +.140 +.140 +.140 +.140
(12) Dbl any # cards +.240 +.232 +.230 +.229 +.228 +.227
(13) Dbl on 11 after split +.070 +.070 +.070 +.070 +.070 +.070
(14) Dbl on 14 after split +.050 +.050 +.050 +.050 +.050 +.050
(15) Re-split Aces +.030 +.055 +.063 +.067 +.070 +.072
(16) Draw to Split Aces +.140 +.140 +.140 +.140 +.140 +.140
(17) Surrender +.024 +.054 +.065 +.070 +.073 +.075
(18) Surrender
(Hits Soft 17)
+.030 +.065 +.077 +.082 +.086 +.088
(19) Early Surrender +.630 +.630 +.630 +.630 +.630 +.630
(20) Early Surrender
(Hits Soft 17)
+.730 +.730 +.730 +.730 +.730 +.730
(21) 2 to 1 Pay Off +2.320 +2.285 +2.273 +2.267 +2.264 +2.262

SYSTEM COMPARISONS
System 2 3 4 5 6 7 8 9 X A
Wong’s halves +1.5 +1 +1 +1.5 +1 +1.5 0 -1.5 -1 -1
Revere Point Count +1 +2 +2 +2 +2 +1 0 0 -2 -2
Dubner/Hi-Lo +1 +1 +1 +1 +1 0 0 0 -1 -1
Ian Anderson +1 +1 +1 +2 +1 +1 0 -1 -1 -2
Revere Advanced (’73) +2 +2 +3 +4 +2 +1 0 -2 -3 0
Uston Point Count +1 +2 +2 +3 +2 +2 +1 -1 -3 0
Hi-Opt II +1 +1 +2 +2 +1 +1 0 0 -2 0
Revere Advanced +/- +1 +1 +1 +1 +1 0 0 -1 -1 0
Einstein/Hi-Opt 0 +1 +1 +1 +1 0 0 0 -1 0
Canfield Expert 0 +1 +1 +1 +1 +1 0 -1 -1 0
Gordon +1 +1 +1 +1 0 0 0 0 -1 0
Ten Count +1 +1 +1 +1 +1 +1 +1 +1 -2.5 +1
 
 
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