#region Define regex results
[regex]$whiteWin = '\[Result "1-0"\]'
[regex]$blackWin = '\[Result "0-1"\]'
[regex]$Tie = '\[Result "1/2-1/2"\]'
#endregion

#region Main Process All pgn files
Get-ChildItem -Path C:\Users\Irwin\Downloads\ChessData-master\ChessData-master -File *.pgn -Recurse |
ForEach-Object {
   $pgnFile = Get-Content $_.FullName -Raw
   [PSCustomObject]@{
      FileReference = $_.Name
      WhiteWin = ($whiteWin.Matches($pgnFile)).Count
      BlackWin = ($blackWin.Matches($pgnFile)).Count
      Tie = ($Tie.Matches($pgnFile)).Count
   }
} |
Export-Csv .\export\ChessMatchesResults.csv -Delimiter "`t" -NoTypeInformation
#endregion