Comments?

https://worldofcardgames.com/#!replayer ... %3A1%7D%5D
Unread post by Richardb02 » Sun Oct 31, 2021 8:08 pm
Unread post by Wes (aka the legend) » Mon Nov 01, 2021 2:46 am
Unread post by raydog » Mon Nov 01, 2021 6:42 pm
Unread post by jspectre » Mon Nov 01, 2021 8:37 pm
Unread post by irishwolf » Mon Nov 01, 2021 9:30 pm
Unread post by raydog » Wed Nov 03, 2021 6:22 pm
Unread post by irishwolf » Wed Nov 03, 2021 8:50 pm
Unread post by Tbolt65 » Sat Nov 06, 2021 12:27 am
raydog wrote: ↑Wed Nov 03, 2021 6:22 pm
I tried putting this to the test (10,000 hands) and found it was much better for S1 to call up the KS R1.
Get euchred 13% of the time, make 2pts 13% of the time, make 1pt. the rest. Very good +EV.
If pass R1 and bid C R2, do a nice job euchring opponents when they do call R1 (they call about 25% of the time, and you euchre then 40-45% of the time)
Apologies, Wolf - 50% is indeed way too high. I mistakenly compared "points lost by being euchred" with "points won by winning the hand (1 pt)", and since the latter was only slightly lower than the former I said almost 50%. Clearly, the point values of the two cases are different.
So let me give the correct stats here:
S1 calls next (clubs) R2 and leads:
2pts: 464 hands (6%)
1 pt: 4466 hands (57%)
-2pts: 2904 hands (37%)
EV = 0.046 [includes the hands where another player bid R1, not shown here]
same as above, S1 leads:
2 pts: 516 (7%)
1 pt: 4233 (54%)
-2 pts: 3085 (39%)
EV = -0.001 [includes the hands where another player bid R1, not shown here]
same as above, S1 leads the:
2 pts: 449 (6%)
1 pt: 3816 (49%)
-2 pts: 3569 (45%)
EV = -0.19
Note that I also ran the scenario for 10,000 hands here - I had only run it for 1,000 hands before (another error) and it turns out bidding R2 is even worse than I suspected. This run of 10,000 hands shows everyone passing R1 78% of the time.
You are always very skeptical of my data, as am I, because my program may not be playing correctly. For example, if expert players would bid or pass a different subset of hands R1, that would leave a different subset to be played by S1 in R2, altering the results. And, obviously, the play of the hand when S1 does bid R2 (including the first lead) also matters [my program did by default lead the 9H, which seems to be the best choice].
I am only reporting my findings here because they overwhelmingly point to one play (i.e., calling the KS into the dealer's hand, R1) being better to the other (i.e., bidding next, R2). I don't pretend to be able to tease out subtle differences in play and say which is better.
Unread post by raydog » Sun Nov 07, 2021 4:44 pm
Unread post by Tbolt65 » Sun Nov 07, 2021 6:39 pm
Unread post by raydog » Sat Nov 20, 2021 3:49 pm
Unread post by Tbolt65 » Mon Nov 22, 2021 11:49 pm
raydog wrote: ↑Sat Nov 20, 2021 3:49 pmI understand what you are saying, Edward, but when I crunch the numbers I find that S1 bidding R1 gives them a better chance of winning the game than if they bag R1 and bid R2.
Given the current score (and current hand), no one is going to going bidding alone anymore in this game. So the possible point values for this and and subsequent hands (should they be necessary) are 1 or 2 pts for the dealing team or 1 or 2 pts for the non-dealing team.
There are 5 paths to victory for the team sitting N/S, as summarized in this table:
(they obviously can't lose any pts)
current hand next hand 3rd hand
1) +1 pt +1 pt +1 pt
2) +1 pt +1 pt +2 pt
3) +1 pt +2 pt
4) +2 pt +1 pt
5) +2 pt +2 pt
It's simply a matter of calculating the odds of each of these scenarios and summing them. Here are the odds I found of each team scoring 1 or 2 points by simulating 100,000 random hands:
current hand current hand subsequent
S1 bids R1 S1 bids R2 hands
dealing team scores 2 pts: 12.5% 28.9% 22.9%
dealing team scores 1 pt: 0% 12.4% 43.7%
other team scores 1 pt: 75.6% 44.7% 19.1%
other team scores 2 pts: 12.0% 14.0% 14.3%
Plugging the appropriate percentages into the victory paths shown previously, I find that N/S have a 36.3% chance of winning the game if S1 bids R1 in the current hand, but that drops to a 26.1% chance of winning if S1 passes R1 and bids next R2. Despite the fact that they score 2pts a few more times (through euchres) if they pass R1.
But maybe you don't trust the stats of who scores how many points if S1 bids R2. I tried a fake scenario where I boosted the % of 2 pt scores to 30%, and lowered the % of 1 pt scores to 40% (so a hugely better outcome for N/S in the current hand than expected), and using these numbers found that N/S still only has a 35.0% chance of winning the game. Even with all those 2pt scores.
What appears to be MOST important here is not letting the other team score a single point, which would end the game there and then.
You Imply here that S1 has a greater chance of making a mistake when passing a Round 1 a hand that could make a point and gives up points when they bag the same hand, thus ending the game. If the hand is strong enough to make a point conversely, it's also strong enough to get two points if the dealer picks up. Correct? So, if it does go pass-pass, and seat 1 now has the call in the second round and only just gets the 1 point they would have had if they had ordered Round 1. Nothing is lost. Correct? Hence the numbers in the long run should point to more euchres on a pass. Which you do say will get more euchre's but also say the chance of winning goes down significantly. How is that? When you have the deal, you'll get 9-9 more often when passing as you stated but how are you losing more often in this spot with your deal? This is what you want. This is the whole premise of bagging and getting it your deal and the score of 9-9. I believe Wes says it's like a 65% or 67% favor for the dealer at this point and I'll take that all day and every day. This is the best scenario you want with the hand we currently have being at a score of 7-9 on the previous hand. The only thing better is to go alone. This is not a hand you can go alone with, in any round. I think you may confuse the numbers because that 35% would be about right for E/W winning the game on N/S 9-9 deal.
I believe the hand generator is not playing optimally or near optimal in the Seat 1 and dealer scenarios or on the ensuing hand when S1 becomes the dealer on the next deal.
Tbolt65
Edward
P.S.: just to walk you through a sample calculation, the odds of team N/S winning the game by winning 1 pt in each of 3 games [scenario 1) above], if S1 bids R1, is given by (.756)(.437)(.191) = .063. Do this calculation for all 5 scenarios and add together to get 36.3%.
Unread post by irishwolf » Tue Nov 23, 2021 2:15 am
Unread post by Wes (aka the legend) » Tue Nov 23, 2021 12:59 pm
This reasoning doesn't work becuz virtually nobody does this. I mean you could be right that bagging is better but it wouldn't be becuz there's a great chance the "dealer will pick it up to protect the score". I've played over 30K games in the last 4 years. I know like 5 players including myself and you that will ever call light from the dealer spot to protect a score. But even with all that said......
This is the wrong mindset when up 9-7. You've talked about this before and I nodded when I read your post. You said something like, Up 9-6 you can protect, up 9-7 you really can't becuz the cost of getting euchred is too high. So in this spot even expert players' hands are tied here.
Unread post by irishwolf » Tue Nov 23, 2021 1:27 pm
Unread post by raydog » Tue Nov 23, 2021 6:47 pm
Unread post by Tbolt65 » Tue Nov 23, 2021 8:38 pm
raydog wrote: ↑Tue Nov 23, 2021 6:47 pmTo Edward: Calling Spades R1 and Clubs R2 are not identical for S1. Much better chances of making a pt. R1 (76%, by my simulation) than R2 (45%, by my simulation). It's those additional times getting euchred on a R2 call that scupper S1's chances of winning the overall game. The stats on R1 calls by S1 are purely how well their hand holds up. The stats on R1 passes / R2 calls by S1 are an amalgam of results from bids by other players, R1, PLUS how well S1's hand holds up on a Clubs bid (OK, but not great), so it gets a bit messy. But I still find it much worse than bidding R1.
Unread post by raydog » Tue Nov 23, 2021 10:16 pm
Unread post by irishwolf » Tue Nov 23, 2021 10:53 pm
Unread post by Tbolt65 » Tue Nov 23, 2021 11:22 pm
I'm talking about this specific hand only. Not any other possibly holdings or hand make up. Because any other holdings, score etc... will possibly have dramatic changes in the way the hand is approached. For the most part you can't put it into one bag. You have to deal with it on the fly and be able to scrutinize and use situational awareness that helps guide one in either making the the proper decision or a properly estimated gamble.raydog wrote: ↑Tue Nov 23, 2021 10:16 pmWhile the added euchres achieved when S4 (or S2) pick up do skew things to the advantage of S1, my simulation finds that S2 + S4 only declare trump 20% of the time if S1 passes, R1 [of course, the 20% of times when they have the strongest hands, and get euchred "only" 45% of the time]. Which means S1 ends up playing 80% of the hands with Clubs as trump. And so the two scenarios are not close.
You may argue that S4 will pick up the KS far more often - perhaps 50, 60, even 70% of the time, but I would deem that a mistake, as it is ultimately inviting far too many euchres and hurting their chances of winning the game. If their euchre rate is 45% on the BEST 20% of hands, it will be 60%+ on the next 20% of hands, and only getting worse from there. [Granted, S4 doesn't KNOW that their euchre rate will be that high, as they don't know S1 has such a strong hand. But even against a more random sample of cards in the other players' hands, their euchre rate would be unacceptably high]. But as I said in my reply to Irish, I can't properly simulate that kind of play. So I think we simply won't agree on how best to play this hand.
Ray
Unread post by Tbolt65 » Sun Nov 28, 2021 11:40 pm
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