browse_opening {bigchess}

Browse opening

Description

Browse opening winning and drawing percentages by table and barplot

Usage

browse_opening(df, movetext = "")

Arguments

df

data frame with imported chess games from read.pgn() function.

movetext

movetext string, default is "" means browse first move for White. The standard English values are required: pawn = "P" (often not used), knight = "N", bishop = "B", rook = "R", queen = "Q", and king = "K".

Value

Data frame from tree_move function and plot from plot_tree_move function.

Examples

f <- system.file("extdata", "Kasparov.gz", package = "bigchess")
con <- gzfile(f,encoding = "latin1")
df <- read.pgn(con,quiet = TRUE,ignore.other.games = TRUE,stat.moves = FALSE)
# Analyze best Kasparov openings:
bo <- browse_opening(subset(df,grepl("Kasparov",White)))
# Analyze 'best' answer to Kasparov Ruy Lopez:
bo <- browse_opening(subset(df,grepl("Kasparov",White)),"1.e4 e5 2.Nf3 Nc6 3.Bb5")
# Analyze best answer to "1.e4 e5 2.Nf3" in aggregated data
browse_opening(FirstTwoMoves,"1.e4 e5 2.Nf3")