PhilippeB
PhilippeB
Joined: Jun 23, 2015
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January 25th, 2017 at 3:39:05 PM permalink
What is the gain from Late Surrender to Early Surrender in Spanish 21 ?
Say 6 decks, S17, No redouble, Basic Strategy

I ran sim in CVData and MGP's Blackjack Analyser and results are very different.

From -0.372% to -0.167% (+0.205%) for MGP
From -0.385% to +0.444% (+0.829%) for CVData
ChesterDog
ChesterDog
Joined: Jul 26, 2010
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January 25th, 2017 at 10:03:38 PM permalink
Quote: PhilippeB

What is the gain from Late Surrender to Early Surrender in Spanish 21 ?
Say 6 decks, S17, No redouble, Basic Strategy

I ran sim in CVData and MGP's Blackjack Analyser and results are very different.

From -0.372% to -0.167% (+0.205%) for MGP
From -0.385% to +0.444% (+0.829%) for CVData



I have an infinite-deck Excel sheet for S17, no redouble Spanish 21. It's approximate because it ignores the spaded bonuses resulting from splits, but this is only a small effect. With a change from late to early surrender, the sheet's player's EV changes:

From -0.445% to -0.233% (+0.212%) for my infinite-deck Excel sheet

I'm sure early surrender is less valuable in Spanish 21 than in regular blackjack because of the shortage of 10s in Spanish 21.
PhilippeB
PhilippeB
Joined: Jun 23, 2015
  • Threads: 6
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January 26th, 2017 at 2:24:30 AM permalink
Well. Thank you very much.
It seems that it's MGP who is right.
QFIT
QFIT
Joined: Feb 12, 2010
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January 26th, 2017 at 12:43:05 PM permalink
Both those numbers are likely incorrect. Change the way dlr auto-win on 21 is handled as suggested at BJTF.
"It is impossible to begin to learn that which one thinks one already knows." -Epictetus
PhilippeB
PhilippeB
Joined: Jun 23, 2015
  • Threads: 6
  • Posts: 35
January 29th, 2017 at 8:34:26 AM permalink
Not enough.

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