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Subject: Things my computer has tought me about San Juan. rss

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Mark Haberman
United States
Painesville
Ohio
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So I've been working on a computer version of San Juan, because I wanted to try my hand at A.I. I've got a semi-finished product (the A.I. is mostly good but the interface needs some work), so I did what any good geek would do...

I had my A.I. play itself for 1000 3-player games and logged the results for further analysis.

Here are some insights I was able to make based on the results.

1. Player 2 has a considerable advantage.

Here are the actual numbers of games won per player:

Player2 354
Player1 331
Player3 315

Player 2 has the advantage because in the first round, there are only two roles that are of any help. The builder and the prospector. Player 3 ends up taking the mayor, or possibly the producer if they happened to build a production building. Meanwhile Player 1 has to wait 5 more turns before being able to select a second role. Since the Builder and prospector offer nearly identical advantage in the first round, Player 2 essentially gets the best role 2 rounds in a row and a nice head start.


2. The carpenter is the best choice for a first build.

Here are the winning percentages based on first building built:


BuildingName


 Cost WinCount LossCount WinRate
Carpenter 3 235 191 0.551643192488263
Poorhouse 2 49 52 0.485148514851485
Quarry 4 48 52 0.48
Library 5 7 9 0.4375
Prefecture 3 241 323 0.427304964539007
Archive 1 12 19 0.387096774193548
Gold Mine 1 83 147 0.360869565217391
Tool Forge 1 58 139 0.294416243654822
Sugar Mill 2 9 23 0.28125
Well 2 57 186 0.234567901234568
Tobacco Storage 3 38 135 0.219653179190751
Market Hall 4 33 122 0.212903225806452
Market Stall 2 70 276 0.202312138728324
Chapel 3 1 4 0.2
Statue 3 30 129 0.188679245283019
Victory Column 4 6 38 0.136363636363636
Trading Station 2 15 96 0.135135135135135
Tower 2 4 40 9.09090909090909E-02
Coffee Roaster 4 1 10 9.09090909090909E-02
 
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Mark Haberman
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Re:Things my computer has tought me about San Juan.
Read the article above this one. I hit submit on accident.
 
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