/// <summary>
/// Returns a string that describes the given principal variation.
/// </summary>
/// <param name="position">The position the principal variation is to be played on.</param>
/// <param name="depth">The depth of the search that yielded the principal variation.</param>
/// <param name="value">The value of the search that yielded the principal variation.</param>
/// <returns>A string that describes the given principal variation.</returns>
private String CreatePVString(Position position, Int32 depth, Int32 value)
{
List <Int32> pv = GetCurrentPV();
Boolean isMate = Math.Abs(value) > NearCheckmateValue;
Int32 movesToMate = (CheckmateValue - Math.Abs(value) + 1) / 2;
switch (Restrictions.Output)
{
// Return standard output.
case OutputType.GUI:
String depthString = depth.ToString();
String valueString = isMate ? (value > 0 ? "+Mate " : "-Mate ") + movesToMate :
(value / 100.0).ToString("+0.00;-0.00");
String movesString = Stringify.MovesAlgebraically(position, pv);
return(String.Format(PVFormat, depthString, valueString, movesString));
// Return UCI output.
case OutputType.UCI:
String score = isMate ? "mate " + (value < 0 ? "-" : "") + movesToMate :
"cp " + value;
Double elapsed = _stopwatch.Elapsed.TotalMilliseconds;
Int64 nps = (Int64)(1000 * _totalNodes / elapsed);
return(String.Format("info depth {0} score {1} time {2} nodes {3} nps {4} pv {5}", depth, score, (Int32)elapsed, _totalNodes, nps, Stringify.Moves(pv)));
}
return(null);
}
/// <summary>
/// Returns the PGN string of the game.
/// </summary>
/// <returns>The PGN string of the game.</returns>
public String GetPGN()
{
StringBuilder sb = new StringBuilder();
sb.Append("[Date \"" + _date + "\"]");
sb.Append(Environment.NewLine);
sb.Append("[White \"" + White.Name + "\"]");
sb.Append(Environment.NewLine);
sb.Append("[Black \"" + Black.Name + "\"]");
sb.Append(Environment.NewLine);
String result = "*";
switch (_state)
{
case GameState.WhiteWon:
result = "1-0";
break;
case GameState.BlackWon:
result = "0-1";
break;
case GameState.Draw:
result = "1/2-1/2";
break;
}
sb.Append("[Result \"" + result + "\"]");
sb.Append(Environment.NewLine);
String initialFEN = _initialPosition.GetFEN();
if (initialFEN != Position.StartingFEN)
{
sb.Append("[SetUp \"1\"]");
sb.Append(Environment.NewLine);
sb.Append("[FEN \"" + initialFEN + "\"]");
sb.Append(Environment.NewLine);
}
sb.Append(Environment.NewLine);
sb.Append(Stringify.MovesAlgebraically(_initialPosition, _moves, StringifyOptions.Proper));
if (result != "*")
{
sb.Append(" " + result);
}
return(sb.ToString());
}