Get-HadoopChallenge.ps1

[CmdletBinding()]
Param (
    [ValidateScript({ Test-Path $_ } )]
    [string]$Path = "c:\Test"
)

$ResultHash = @{
    "1-0" = 0
    "0-1" = 0
    "1/2-1/2" = 0
}
$DisplayHash = @{
    "1-0" = "White"
    "0-1" = "Black"
    "1/2-1/2" = "Draw"
}


$Start = Get-Date
$Results = ForEach ($Dir in (Get-ChildItem $Path -Directory | Sort Name | Select -First 10))
{
    ForEach ($File in (Get-ChildItem "$($Dir.FullName)\*.pgn" -File))
    {
        $RawFile = (New-Object System.IO.StreamReader -Argument $File.FullName).ReadToEnd()
        ForEach ($Group in ($RawFile | Select-String -AllMatches -Pattern '\[Result \"(.*)\"').Matches)
        {
            $ResultHash[$Group.Groups[1].Value] ++
        }
    }
}

$ResultHash.Keys | Where { $_ -ne "*" } | Sort | Select @{Name="Winner";Expression={ $DisplayHash[$_] }},@{Name="Count";Expression={ $ResultHash[$_] }}

Write-Verbose $(New-TimeSpan -Start $Start -End (Get-Date)) -Verbose

First run was 4 minutes 20 seconds (did screen shot that one). Second run was even better!