tree_move {bigchess}

Compute tree for a given move

Description

Compute tree for a given move (frequencies and winning percent)

Usage

tree_move(df, move)

Arguments

df

data frame containg move and Result column from pgn function or data frame containing aggregated data from such df (containg columns: Result, W1, B1, W2, ..., WN, BN, Freq)

move

character indicating which move should be browsed, example "W1"

Value

Data frame containg White_score (White winning percent), Draws_percent, Black_score and N (number of games). Sorted by power of move (White_score times N which describes popularity and score of move) descending.

Examples

f <- system.file("extdata", "Kasparov.gz", package = "bigchess")
con <- gzfile(f,encoding = "latin1")
df <- read.pgn(con,quiet = TRUE,stat.moves = FALSE)
# Analyze best answers to 1. e4 in Kasparov games (both white and black)
tree_move(subset(df,W1=="e4"),move = "B1")
# Analyze openings in aggregated data
tree_move(FirstTwoMoves,"W1")