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Best of John Grochowski

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BJ Bob and Single Deck BJ

11 July 2021

My card-playing pal Blackjack Bob contacted me early in June to say it was about time we got together. It had been more than a month, and he was ready for some 21 talk.

We met for lunch at a non-casino restaurant, and after the usual small talk about families and work, I asked what was up.

"We had a large family gathering over Memorial Day weekend," he said. "Good chance to reconnect. My cousin Jim cornered me for some blackjack talk, and you know I'm always ready for that.

"He said he'd been poking around online and found single-deck blackjack. His eyes lit up. Jim is no expert but he knows one deck is better than six. So I asked him about the other rules. I swear his eyes glazed over. Jim didn't even notice whether the dealer hit soft 17. He didn't notice if double downs were restricted."

That drew a big "ouch!" from me. I asked if Jim at least noticed whether blackjacks paid 3-2 or 6-5.

"He said blackjacks paid 6-5," Bob said, "so at least he had that going for him.

"I sat him down and explained the facts of life. Single-deck isn't always best. Other rules count, too. And I ticked off some major rules to watch."

These are the rules Bob told Jim to watch:

  • Blackjack pays 3-2 vs. blackjack pays 6-5. Beware of tables that pay 6-5 odds, meaning a $10 bet pays only $12. That adds 1.4 percent to the house edge -- more than the entire house edge based on other rules at most games.

  • Dealer hits or stands on soft 17: It's better for players if the dealer stands on soft 17. The dealer can't beat your standing hands of 17 or better if he stands on all 17s, but he can if he hits soft 17. Hitting soft 17 increases the house edge by about two-tenths of a percent.

  • Player may double down on any first two cards vs. player may double down only on specific hands:

It's best for players to have more options as long as the players take their time to learn basic strategy and know how to use the options.

Restricting doubles to hard totals of 9, 10 or 11, increases the house edge by about a tenth of a percent, or about two-tenths if they're restricted to hard 10 or 11.

  • Double down after splitting pairs: If the casino doesn't allow you to double after splits, it increases the house edge by .14 percent..

  • Players may split pairs, once, twice or three times: If you're allowed to split up to three times for a total of four hands, great. The house edge rises by .01 percent if you can split only twice or .1 percent if you can split only once.

How did Jim take it?

"He was doubtful," Bob said. "So I used one of your favorite, the house edge calculator at wizardofodds.com.

"I defined one game as single deck, dealer hits soft 17, you can double down only on hard 10 or 11, no double after splits, and split pairs only once. I think most online games are continuous shuffle, right? So the house edge with basic strategy is .48 percent.

"Then I plugged in six decks, stand on all 17s, double on any first two including after splits, split three times, and the edge came up as .41 percent."

Did the lower edge on the six-deck game convince Jim?

"Maybe not, but it at least raised some doubts. And I did my duty."

Look for John Grochowski on Facebook (http://tinyurl.com/7lzdt44) and Twitter (@GrochowskiJ).
John Grochowski

John Grochowski is the best-selling author of The Craps Answer Book, The Slot Machine Answer Book and The Video Poker Answer Book. His weekly column is syndicated to newspapers and Web sites, and he contributes to many of the major magazines and newspapers in the gaming field, including Midwest Gaming and Travel, Slot Manager, Casino Journal, Strictly Slots and Casino Player.

Listen to John Grochowski's "Casino Answer Man" tips Tuesday through Friday at 5:18 p.m. on WLS-AM (890) in Chicago. Look for John Grochowski on Facebook and Twitter @GrochowskiJ.

John Grochowski Websites:

www.casinoanswerman.com

Books by John Grochowski:

The Craps Answer Book

> More Books By John Grochowski

John Grochowski
John Grochowski is the best-selling author of The Craps Answer Book, The Slot Machine Answer Book and The Video Poker Answer Book. His weekly column is syndicated to newspapers and Web sites, and he contributes to many of the major magazines and newspapers in the gaming field, including Midwest Gaming and Travel, Slot Manager, Casino Journal, Strictly Slots and Casino Player.

Listen to John Grochowski's "Casino Answer Man" tips Tuesday through Friday at 5:18 p.m. on WLS-AM (890) in Chicago. Look for John Grochowski on Facebook and Twitter @GrochowskiJ.

John Grochowski Websites:

www.casinoanswerman.com

Books by John Grochowski:

> More Books By John Grochowski