![decision trees for the openings in the Game of Go in different historical eras [OC]](https://www.europesays.com/wp-content/uploads/2025/04/1745391249_e2q6hbicsewe1-1920x1024.png)
The figure shows the opening moves in the Game of Go) a series of decisions organised into Reingold-Tilford trees to a depth of seven moves.
Beginning with the first move at the center of the tree (gray dot), each player sequentially chooses a point on the board to play their stone. The thickness of each line corresponds to the number of games of that era that followed this move sequence.
Each branch's coloration indicates which opening variants were used, with some labeled using SGF coordinates on the bottom-right.
Made with R and igraph, using the gogod database.
Posted by babeheim
2 comments
Interesting data and presentation! Quick question – was something different in the rules for the Imperial Era? There is no starting grey line like there is for all other eras.
Your title is a little misleading, as decision trees are a very different thing.
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