internal static int GetAbsRankDifference(this SquareCoordinate startingCoordinate, SquareCoordinate endingCoordinate)
{
return(Math.Abs(startingCoordinate.GetRankDifference(endingCoordinate)));
}
internal static bool IsOnDiagonalAdjacentSquare(this SquareCoordinate startingCoordinate, SquareCoordinate endingCoordinate)
{
return(Math.Abs(startingCoordinate.GetRankDifference(endingCoordinate)) == 1 &&
Math.Abs(startingCoordinate.GetFileDifference(endingCoordinate)) == 1);
}
