public IBestMoveResult BestMove(Board board, SearchConfig config, MoveTimer timer, CancellationToken cancelToken)
{
_timer = timer;
_cancelToken = cancelToken;
if (_isWalledOff)
{
var longestPath = NextMoveOnLongestPath(board, board.PlayerToMove);
return(new BestMoveResult(longestPath.Item1, longestPath.Item2));
}
else // otherwise fall back to alpha beta
{
var ab = new AlphaBeta().BestMove(board, config, timer, cancelToken);
// but if alpha beta thinks we'll lose, do longest move
if (ab.Score == int.MinValue)
{
var longestPath = NextMoveOnLongestPath(board, board.PlayerToMove);
return(new BestMoveResult(longestPath.Item1, longestPath.Item2));
}
return(ab);
}
}
public IBestMoveResult BestMove(Board board, SearchConfig config, MoveTimer timer, CancellationToken cancelToken)
{
_timer = timer;
_cancelToken = cancelToken;
if (_isWalledOff)
{
var longestPath = NextMoveOnLongestPath(board, board.PlayerToMove);
return new BestMoveResult(longestPath.Item1, longestPath.Item2);
}
else // otherwise fall back to alpha beta
{
var ab = new AlphaBeta().BestMove(board, config, timer, cancelToken);
// but if alpha beta thinks we'll lose, do longest move
if (ab.Score == int.MinValue)
{
var longestPath = NextMoveOnLongestPath(board, board.PlayerToMove);
return new BestMoveResult(longestPath.Item1, longestPath.Item2);
}
return ab;
}
}
