Mish-Mash: Blackjack Bots | Mod Topic

[Farren]

Mod Topic for Blackjack Bots.

Access: StrangerCoug, Farren

Hands complete: 30/30

Next culling: n/a

Current bot stats (officially posted hands only):

Player Name	Bot Name	Stack Size
inspiratieloos	Zen Count/Basic	$1,217,500
Sirius9121	Apple Siri	$1,088,500

Current shoe: https://docs.google.com/spreadsheets/d/ ... edit#gid=0
Images: https://postimg.cc/gallery/2SqrQCc

[Farren]

Bot Programming:

Spoiler: Minimalist Bot

Insurance Behavior: Always buy insurance.

Betting Behavior: Bet $25000 (or cash on hand if lower) each round EXCEPT for every fifth hand. For every fifth hand, bet 30% of current cash (rounded to nearest valid bet).

Playing Behavior: If current total is 13, 14, 15, or 16, stand. If the bot has already hit twice and the current total is over 11, stand. Otherwise, hit.

Spoiler: Zen Count/Basic

Zen Count/Basic bot:

On deck shuffle:
Count = 0
N(Ace) = 24
N(2) = 24
N(3) = 24
N(4) = 24
N(5) = 24
N(6) = 24
N(7)=24
N(8)=24
N(9)=24
N(10)=96
N(Cards) = 312

On card dealt to any player:
i = Card type
N(Cards) -1
N(i) -1
If card (type), then count
Ace -1
10 -2
9 0
8 0
7 +1
6 +2
5 +2
4 +2
3 +1
2 +1

On asked bet:
TCount = Count*52/N(Cards)
If TCount > 7 then bet 100000
Elseif Tcount > 5 then bet 80000
Elseif Tcount > 3 then bet 50000
Elseif Tcount > 1 then bet 20000
Else bet 5000

On asked insurance:
If N(10)/N(Cards) > 1/3 then yes
Else no

On play: (insurance rules above overwrite basic strategy insurance)

Spoiler: ND bot

The chart I let her link doesn't cover betting; it just flat-bets the minimum every time.
https://www.onlinegambling.us/images/pa ... -table.png

Spoiler: Apple Siri

'bet = average of last round bets', white round 1 = average of all players who bet before me

For the purposes of how many bets there are, I've been interpreting doubling as increasing the existing bet and splitting as making a new bet.
-----------------------------
Surrender hard 16 (but not a pair of 8s) vs. dealer 9, 10, or A, and hard 15 vs. dealer 10
-----------------------------
Always split aces and 8s.
Never split 5s and 10s.
-----------------------------
Split 2s and 3s against a dealer 2-7.
Split 4s only if the dealer shows a 5 or 6.
Split 6s against a dealer 2-6.
Split 7s against a dealer 2-7.
Split 9s against a dealer 2-9 EXCEPT if the dealer has a 7
-----------------------------
Double hard 9 vs. dealer 3-6.
Double hard 10 except against a dealer 10 or A.
Double hard 11 except against a dealer A.
-----------------------------
Double soft 13 or 14 vs. dealer 5-6.
Double soft 15 or 16 vs. dealer 4-6.
Double soft 17 or 18 vs. dealer 3-6
-----------------------------
Always hit hard 11 or less.
Stand on hard 12 against a dealer 4-6, otherwise hit.
Stand on hard 13-16 against a dealer 2-6, otherwise hit.
Always stand on hard 17 or more.
-----------------------------
Always hit soft 17 or less.
Stand on soft 18 except hit against a dealer 9, 10, or A.
Always stand on soft 19 or more.

Always do top actions before lower actions if possible, i.e. split before hard/soft standing. Once an action is done, reconsider the whole program starting from the emoji .

Hand Template for 4 bots:

Spoiler: Hand Template (4 bots left)

Bot	Hand	Total	Bet	Stack
Minimalist Bot
Zen Count/Basic
ND bot
Apple Siri
Dealer

Hand Template for 3 bots:

Spoiler: Hand Template (3 bots left)

Bot	Hand	Total	Bet	Stack
Zen Count/Basic
ND bot
Apple Siri
Dealer

Hand Template for 2 bots:

Spoiler: Hand Template (2 bots left)

Bot	Hand	Total	Bet	Stack
Zen Count/Basic
Apple Siri
Dealer

[StrangerCoug]

I updated Zen's count in the tab for that in the spreadsheet. It should be OK to deal now:

Heads up: The gray cells in the shoe are those past the cut card. That's how we know when to redeal, and there are only a couple of deals from the shoe left. I was planning on switching to blue backs when the new shoe is shuffled.

[Farren]

Hand 15. (I'm going to be doing this piecemeal, as time allows.)

Bets start with Minimalist Bot.

Minimalist Bot: this *is* "every fifth hand", so bet 30% of current cash, rounded to nearest valid bet. 30% of $287,000 is $86,100. Bets must be in increments of $1,000; rounding down, final bet is

$86,000

.
Zen Count/Basic: per the spreadsheet, TCount = -6.15 roughly. -6.15 is not >7, >5, >3, or >1, so final bet is

$5,000

.
ND bot: no programming; final bet is

$5,000

.
Apple Siri: last round bets were $25,000; $5,000; $10,000 (based on the double); $14,000. Sum is $54,000, div 4 is $13,500. Rounded up, final bet is

$14,000

.

[Farren]

Looking at the last hand to figure out dealing order.

Bidding player gets first card, then down the line from there, with Dealer getting one card after everyone else gets first card.
Then second cards dealt out in same order (bidding player first, down the line, dealer last).
Then each player makes their decisions in order, making all decisions until standing or busting. Finally, dealer plays out.

Dealer's eight of hearts from Hand 14 wasn't marked off from the sheet; that's now done.

[Farren]

Minimalist Bot: 3S, 7S
Zen Count/Basic: 7D, 7S
ND Bot: 3H, QD
Apple Siri: 10D, 7C

Dealer: QS, 7S

Dealer has a Queen showing, so insert rigmarole about checking for a blackjack without offering insurance - no blackjack, yay for the players, hand continues.

[Farren]

Minimalist Bot: current total is not 13/14/15/16. Bot has not already hit twice. Ergo, HIT. It receives: 6C.
Current total is now 16; ergo, STAND.

Out of time for now; will be back to work on this later.

[Farren]

Zen Count/Basic: has a pair of 7s. Dealer's card showing is a Queen (10), so do not Split. It has a hard 14 vs. a Dealer Queen, so HIT. It receives: 10H, putting it at 24.

Bust.

[Farren]

ND Bot: has a total of 13, no Ace. Versus a Dealer Queen (equal to 10), it chooses to HIT. It receives: 8S, putting it at 21, which is an automatic STAND.

Apple Siri: has a hard 17. First relevant instruction: always stand on hard 17 or more. STAND.

Dealer reveals 7S, for a hard 17 of its own. Dealer always stands on 17+; dealer STANDs.

[Farren]

Results:

Minimalist Bot LOSES (16 < 17). -$86,000, for a new total of $201,000.
Zen Count/Basic LOSES (Bust). -$5,000, for a new total of $1,255,000.
ND Bot WINS (21 > 17). +$5,000, for a new total of $1,015,000.
Apple Siri PUSHES (17 = 17). +$0; total remains at $1,060,500.

[Farren]

Before the play:

Bot	Hand	Total	Bet	Stack
Minimalist Bot		10	$86,000	$201,000
Zen Count/Basic		14	$5,000	$1,255,000
ND bot		13	$5,000	$1,005,000
Apple Siri		17	$14,000	$1,046,500
Dealer		10

[Farren]

After the play:

Bot	Hand	Total	Bet	Stack
Minimalist Bot		16	$86,000	$201,000
Zen Count/Basic		24 OVER!	$5,000	$1,255,000
ND bot		21	$5,000	$1,005,000
Apple Siri		17	$14,000	$1,046,500
Dealer		17

Minimalist Bot loses $86,000.

Zen Count/Basic loses $5,000.

ND bot wins $5,000.

Apple Siri pushes, keeping its original bet.

[Farren]

Updating Zen's count:

33 : 17 -> 19
6: 16 => 17
77777: 11 => 16
8: 20 => 21
TTTT: 70 => 74

edit> Done.

[Farren]

Bot Name	Stack Size
Minimalist Bot	$201,000
Zen Count/Basic	$1,255,000
ND bot	$1,015,000
Apple Siri	$1,060,500

as of the end of Hand 15. I'll push that to the OP once the hand is officially posted.

All that's left is:

• double-checking
  
• formatting the "is it a Blackjack? Oh noes!"
  
• writing up flavor.

I can take care of those later this evening; should be able to post no later than 25 hours from now, possibly sooner.

[StrangerCoug]

That basically looks good to me. The fact that I forgot to cross off an eight means that Zen thinks he has erroneously seen one less eight than it actually has, but the error shouldn't affect the way it bets.

[Farren]

Going to see if I can build up something of a buffer, with the holidays approaching.

Hand 16. NOTE - the cut card comes up during this deal, so we'll be reshuffling after the hand's done, as you mentioned earlier.

Bets start with Zen Count/Basic.

Zen Count/Basic: TCount is at -5.mumble. Definitely not in the >1 or anything else category; it bets $5,000.
ND bot: bets $5,000.
Apple Siri: all four bets last round total $110,000; divided by 4 yields $27,500, rounded up to $28,000.
Minimalist Bot goes back to $25,000.

[Farren]

Cards dealt.

Zen Count/Basic: 3D, 7S
ND Bot: AC, 2C
Apple Siri: 3C, 9D
Minimalist Bot: KD, 2D

Dealer: JC, 2D

Dealer has a face card showing; rigmarole as usual. No blackjack.

[Farren]

Zen Count/Basic: has a hard 10 versus a Jack showing. That means no double down; just a HIT. It gets a 5D, bringing it to hard 15. Versus a Jack, another HIT - giving it a 10D, which is 25. BUST.

ND Bot: soft 13 versus the Jack. That calls for a HIT. It gets a 4D, making it a soft 17. Another HIT, this time with a QD and turning it into a hard 17, where it STANDs.

Apple Siri: hard 12 vs. the Jack. That's not a 4-6, so HIT. 9C brings it to 21 where it must STAND.

Minimalist Bot: also has a hard 12. Not a 13-16, so HIT. It gets a 7H, putting it at 19 ... which is not two hits and is also not a 13-16, so it HITS again ... getting a 10S and a very predictable BUST.

Dealer's turn. Dealer hits on hard 12, giving it a 10H. BUST.

[Farren]

Results:

Zen Count/Basic LOSES (bust). -$5,000 for a new total of $1,250,000.
ND Bot WINS (dealer bust). +$5,000 for a new total of $1,020,000.
Apple Siri WINS (dealer bust). +$28,000 for a new total of $1,088,500.
Minimalist Bot LOSES (bust). -$25,000 for a new total of $176,000.

[Farren]

Before the play:

Bot	Hand	Total	Bet	Stack
Minimalist Bot		12	$25,000	$176,000
Zen Count/Basic		10	$5,000	$1,250,000
ND bot		Soft 13	$5,000	$1,010,000
Apple Siri		12	$28,000	$1,032,500
Dealer		10

[Farren]

After the play:

Bot	Hand	Total	Bet	Stack
Minimalist Bot		29 OVER!	$25,000	$176,000
Zen Count/Basic		25 OVER!	$5,000	$1,250,000
ND bot		17	$5,000	$1,010,000
Apple Siri		21	$28,000	$1,032,500
Dealer		22 OVER!

Zen Count/Basic loses $5,000.

ND bot wins $5,000.

Apple Siri wins $28,000.

Minimalist bot loses $25,000.

[Farren]

The reshuffle reset Zen Count/Basic's counter. Done.

New stack sizes:

Bot Name	Stack Size
Minimalist Bot	$176,000
Zen Count/Basic	$1,250,000
ND bot	$1,020,000
Apple Siri	$1,088,500

[Farren]

Deck reshuffled; I added a new column and used random.org to generate a new list of 312 cards from 6 decks, all cards except jokers included. Old column being saved for archival reasons.

OP updated with new totals.

Hand 17.

Bets start with ND bot. It bets its usual $5,000.
Apple Siri: bets last round summed to $63,000. Divided by four, that's $15,750, rounded up to $16,000.
Minimalist Bot: not a hand divisible by five, so $25,000.
Zen Count/Basic: working off of a fresh deck, so TCount is 0. Still not >1, so minimum bet of $5,000.

Also, I think the insurance formula for Zen Count/Basic is wrong. It's working off of the Seen values, but based on what the bot's instructions are, it should be working off of the Current values, I think? Changing it from (K3/L3) to (K4/L4).

[Farren]

Dealing out cards:

ND bot: 4C, 5D
Apple Siri: AS, 2D
Minimalist Bot: 10C, QC
Zen Count/Basic: QH, 8D

Dealer: QD, 9S

Dealer has a face card showing.

[Farren]

ND bot has a hard 9 vs. a Queen. HIT: 3C. Hard 12 vs. a Queen: KH, 22, BUST.
Apple Siri has a soft 13 vs. a Queen. No double-down. HIT: KD, 13. HIT: 2C, 15. HIT: 10H, BUST.
Minimalist Bot has a hard 20. Its bug pops up again; HIT: 5D, BUST.
Zen Count/Basic has a hard 18 and STANDs.

Dealer reveals a 19 and STANDs. Everyone loses.