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Blackjack Switch EV charts


In order to work out the switch decisions in Blackjack Switch for yourself you can use the three charts below, which show the values of all the possible three-card combinations in percentage format and assuming correct basic strategy; a value of 0.575 means that on a $100 wager you can expect to see an average win of $57.50; a value of -0.395 would mean an average loss of $39.50.

The process for calculating the switch decision is simple: locate the values of your two hands, sum them together, then do the same for the hands that would result from switching - and chose whichever gives the higher value.

Take a look again at the example on the last page, a 14 and 15 against dealer 7:



                         blackjack switch before - player 14 and 15 against a dealer 7.                                                   blackjack switch after - player hands changed to 11 and 18 after switching the top cards around.


Referring to the charts below, we see that the value of player 14 v. dealer 7 is -0.3526, and for 15, 0.3946; the sum of the two figures works out at -0.7472. Switching gives 18 and 11 v. 7, the values of which are +0.3343 and +0.3362 respectively, which, summed together, give +0.6705. Since +0.6705 beats -0.7464 by an awfully long way, switching is the correct decision.

Positive and negative values are coloured in yellow and grey respectively for greater clarity (chart details courtesy of the Wizard Of Odds blackjack switch appendix):


Hard totals
PlayerDealer
2345678910A
5-0.2695-0.1883-0.1509-0.1121-0.0723-0.1566-0.2219-0.2979 -0.3448-0.3484
6-0.2832-0.2004-0.1626-0.1236-0.0823-0.1891-0.2520-0.3250-0.3696 -0.3732
7-0.2551-0.1721-0.1347-0.0954-0.0561-0.1166-0.2558-0.3266-0.3607 -0.3908
8-0.1694-0.0884-0.0528-0.01720.01780.0347 -0.1049-0.2526-0.2918-0.3059
9-0.07210.00750.03840.07150.13340.12450.0534 -0.0956-0.1957-0.1669
100.05930.22130.27920.33860.39400.27040.16970.0722 -0.0185-0.0088
110.17280.33130.38510.44010.49260.33620.22960.11500.0734 0.0639
12-0.3561-0.3005-0.2783-0.2538-0.2108-0.2482-0.3055-0.3722 -0.4086-0.4128
13-0.4026-0.3439-0.2989-0.2551-0.2110-0.3021-0.3553-0.4130 -0.4507-0.4544
14-0.4389-0.3436-0.2993-0.2553-0.2110-0.3526-0.3977-0.4552 -0.4901-0.4933
15-0.4382-0.3436-0.2993-0.2556-0.2117-0.3946-0.4406-0.4943 -0.5267-0.5297
16-0.4385-0.3442-0.2998-0.2561-0.2131-0.4348-0.4774-0.5272 -0.5575-0.5605
17-0.3081-0.2175-0.1767-0.1382-0.0984-0.1731-0.4444-0.4789 -0.4751-0.5677
18-0.04160.04060.07090.10220.13150.33430.0442 -0.2419-0.2324-0.2772
190.22640.29860.31870.34390.36180.55100.53180.22770.0103 0.1376
200.48290.54660.55940.57520.58730.70770.73070.70010.5009 0.5472
Soft totals
PlayerDealer
2345678910A
A2-0.0895-0.02080.01050.04320.07660.0754 0.0106-0.0749-0.1428-0.1378
A3-0.1226-0.0444-0.01180.02160.05640.0338-0.0248-0.1098-0.1761 -0.1713
A4-0.1462-0.0659-0.03360.00060.0365-0.0054-0.0665-0.1478-0.2102 -0.2061
A5-0.1673-0.0863-0.0531-0.01850.0217-0.0470-0.1061-0.1849-0.2453 -0.2412
A6-0.1471-0.0658-0.03270.00680.07450.0037-0.1189 -0.1911-0.2399-0.2628
A7-0.04010.04390.07520.11680.17790.33640.0473 -0.1433-0.1884-0.2023
A80.22720.30200.32220.34630.36340.55180.53530.23110.0049 0.1355
A90.48370.54920.56090.57670.58840.70900.73100.70250.4974 0.5510
BJ,
switched
0.72820.78660.79210.79800.80320.86130.87030.8829 0.90600.8505
BJ,
natural
1.00001.00001.00001.00001.00001.00001.00001.0000 1.00001.0000
Pairs
PlayerDealer
2345678910A
A/A0.17950.33830.39230.44740.50180.34870.24280.1265 0.07170.0155
2/2-0.2548-0.1748-0.1389-0.08310.0147-0.1101 -0.1933-0.2720-0.3204-0.3247
3/3-0.2833-0.2013-0.1622-0.1101-0.0103-0.1661-0.2520-0.3249 -0.3696-0.3733
4/4-0.1692-0.0884-0.0522-0.01600.0196 0.0359-0.1041-0.2525-0.2912-0.3049
5/50.06030.22240.28080.34290.40050.27390.17050.0719 -0.0186-0.0086
6/6-0.3571-0.3004-0.2599-0.1645-0.0624-0.2517-0.3083-0.3741 -0.4106-0.4142
7/7-0.4369-0.2850-0.1968-0.1061-0.0102-0.1829-0.4016-0.4600 -0.4962-0.4984
8/8-0.2984-0.0946-0.01460.06270.1461 0.1814-0.1555-0.5026-0.5576-0.5595
9/9-0.04010.04170.09880.17300.24420.33590.1220-0.1844 -0.2297-0.2738
10/100.48290.54660.55940.57520.58730.70770.73070.7001 0.50090.5472



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