Find Chess counts

Function Start-EphingThreads {
    Param($ScriptBlock, $threads)
	$SyncTable.ThreadsInProg = New-Object System.Collections.ArrayList
	$Synctable.Runspaces = @{}
	$SessionState = [System.Management.Automation.Runspaces.InitialSessionState]::CreateDefault()
	$SessionState.ApartmentState = "STA"
	$SessionState.Variables.Add((New-Object -TypeName System.Management.Automation.Runspaces.SessionStateVariableEntry -ArgumentList 'SyncTable', $SyncTable, ""))
	$SyncTable.RunspacePool = [RunspaceFactory]::CreateRunspacePool(1, $Threads, $SessionState, $Host)
	$SyncTable.RunspacePool.Open()
	for ($i = 0; $i -lt $Threads; $i++) {
		$Synctable.Runspaces["Script$i"] = [Powershell]::Create().AddScript($Scriptblock).AddArgument($i).AddArgument($Directory)
		$Synctable.Runspaces["Script$i"].RunspacePool = $SyncTable.RunspacePool
		$Synctable.Runspaces["Handle$i"] = $Synctable.Runspaces["Script$i"].BeginInvoke()
	}
}

$ScriptBlock = {
    $WhiteWin = 0
    $BlackWin = 0
    $Draw = 0
    Do {
        [System.Threading.Mutex]$Mutex
        Try {
            [Bool]$Created = $false
            $Mutex = New-Object System.Threading.Mutex($true, "MyMutex", [ref] $Created)
            If (!$Created) {$Mutex.WaitOne()}
            $FileList = $SyncTable.FileList
            $FileListCount = $FileList.Count
            $FileName = $SyncTable.FileList[0]
            $SyncTable.FileList.RemoveAt(0)
        }
        Finally {
            $Mutex.ReleaseMutex()
            $Mutex.Dispose()
        }
        $file = New-Object System.IO.StreamReader -ArgumentList $FileName
        $temphash = @{}
        :loop while ($true ) 
        {
            try
            {
                $line = $null
                $line = $file.ReadLine()
                if ($line -eq $null)
                {
                    $file.close()
                    break loop
                }
                if($line.StartsWith('[Result'))
                {
                    $temphash[$line]+=1
                }
            }
            catch
            {
                $file.close()
                break loop
            }
        }
    [System.Threading.Mutex]$Mutex
    Try {
        [Bool]$Created = $false
        $Mutex = New-Object System.Threading.Mutex($true, "MyMutex", [ref] $Created)
        If (!$Created) {$Mutex.WaitOne()}
        $Wwin = $SyncTable.WhiteWin
        $SyncTable.WhiteWin = $Wwin + $temphash['[Result "0-1"]']
        $BWin = $SyncTable.BlackWin
        $SyncTable.BlackWin = $BWin + $temphash['[Result "1-0"]']
        $dr = $SyncTable.Draw
        $SyncTable.Draw = $dr + $temphash['[Result "1/2-1/2"]']
    }
    Finally {
        $Mutex.ReleaseMutex()
        $Mutex.Dispose()
    }
    } while ($FileListCount -gt 1)

}
$TotalThreads = 6
$Global:SyncTable = [HashTable]::Synchronized(@{})
$SyncTable.FileList = New-Object System.Collections.Arraylist
Get-ChildItem 'C:\temp\ChessData-master' -Recurse -Filter '*.pgn' | ForEach-Object { $null = $SyncTable.FileList.Add($_.FullName) }
$SyncTable.WhiteWin = 0
$SyncTable.BlackWin = 0
$SyncTable.Draw = 0
Start-EphingThreads -ScriptBlock $ScriptBlock -threads $TotalThreads
$EndScriptCount = 0
do {
    $EndScriptCount = 0
    for ($i = 0; $i -le 20; $i++) {If ($SyncTable.Runspaces["Handle$i"].IsCompleted -eq $true) {$EndScriptCount++}}
    Start-Sleep 1
} while ($EndScriptCount -lt $TotalThreads)
$WWin = $SyncTable.WhiteWin
$BWin = $SyncTable.BlackWin
$Draw = $SyncTable.Draw
Write-Host "W: $WWin B: $BWin D: $Draw"

This gets me:

W: 1493574 B: 2013976 D: 1848775

Days : 0
Hours : 0
Minutes : 1
Seconds : 18
Milliseconds : 728
Ticks : 787280400
TotalDays : 0.000911204166666667
TotalHours : 0.0218689
TotalMinutes : 1.312134
TotalSeconds : 78.72804
TotalMilliseconds : 78728.04