#define CHDecodePiotrRankCase(caseVal,switchVariable,assignTo,valFor0,valFor1,valFor2,valFor3,valFor4,valFor5,valFor6,valFor7) case caseVal: switch(switchVariable) { case 0: assignTo = valFor0; break; case 1: assignTo = valFor1; break; case 2: assignTo = valFor2; break; case 3: assignTo = valFor3; break; case 4: assignTo = valFor4; break; case 5: assignTo = valFor5; break; case 6: assignTo = valFor6; break; case 7: assignTo = valFor7; break; default: NSAssert(NO,@"Invalid file value"); } break;
-(NSString*) encodeMoveToPiotrFormat:(bool)forLive
{
    char firstCharacter = -1, secondCharacter = -1;

    switch (self.sourceRank) {
            CHDecodePiotrRankCase(0, self.sourceFile, firstCharacter, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h');
            CHDecodePiotrRankCase(1, self.sourceFile, firstCharacter, 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p');
            CHDecodePiotrRankCase(2, self.sourceFile, firstCharacter, 'q', 'r', 's', 't', 'u', 'v', 'w', 'x');
            CHDecodePiotrRankCase(3, self.sourceFile, firstCharacter, 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F');
            CHDecodePiotrRankCase(4, self.sourceFile, firstCharacter, 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N');
            CHDecodePiotrRankCase(5, self.sourceFile, firstCharacter, 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V');
            CHDecodePiotrRankCase(6, self.sourceFile, firstCharacter, 'W', 'X', 'Y', 'Z', '0', '1', '2', '3');
            CHDecodePiotrRankCase(7, self.sourceFile, firstCharacter, '4', '5', '6', '7', '8', '9', '!', '?');
        default:
            NSAssert(NO,@"Invalid rank value");
            break;
    }
    if([self isCastleMove])
    {
        if(forLive)
        {
            switch (self.sourceRank)
            {
                    CHDecodePiotrRankCase(0, self.kingDestFile, secondCharacter, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h');
                    CHDecodePiotrRankCase(1, self.kingDestFile, secondCharacter, 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p');
                    CHDecodePiotrRankCase(2, self.kingDestFile, secondCharacter, 'q', 'r', 's', 't', 'u', 'v', 'w', 'x');
                    CHDecodePiotrRankCase(3, self.kingDestFile, secondCharacter, 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F');
                    CHDecodePiotrRankCase(4, self.kingDestFile, secondCharacter, 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N');
                    CHDecodePiotrRankCase(5, self.kingDestFile, secondCharacter, 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V');
                    CHDecodePiotrRankCase(6, self.kingDestFile, secondCharacter, 'W', 'X', 'Y', 'Z', '0', '1', '2', '3');
                    CHDecodePiotrRankCase(7, self.kingDestFile, secondCharacter, '4', '5', '6', '7', '8', '9', '!', '?');
                default:
                    NSAssert(NO,@"Invalid rank value");
                    break;
            }
        }
        else
        {
            switch (self.sourceRank)
            {
                    CHDecodePiotrRankCase(0, self.rookSourceFile, secondCharacter, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h');
                    CHDecodePiotrRankCase(1, self.rookSourceFile, secondCharacter, 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p');
                    CHDecodePiotrRankCase(2, self.rookSourceFile, secondCharacter, 'q', 'r', 's', 't', 'u', 'v', 'w', 'x');
                    CHDecodePiotrRankCase(3, self.rookSourceFile, secondCharacter, 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F');
                    CHDecodePiotrRankCase(4, self.rookSourceFile, secondCharacter, 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N');
                    CHDecodePiotrRankCase(5, self.rookSourceFile, secondCharacter, 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V');
                    CHDecodePiotrRankCase(6, self.rookSourceFile, secondCharacter, 'W', 'X', 'Y', 'Z', '0', '1', '2', '3');
                    CHDecodePiotrRankCase(7, self.rookSourceFile, secondCharacter, '4', '5', '6', '7', '8', '9', '!', '?');
                default:
                    NSAssert(NO,@"Invalid rank value");
                    break;
            }
        }
    }
    else if(self.promotingPiece == -1)
    {
        switch (self.destRank)
        {
                CHDecodePiotrRankCase(0, self.destFile, secondCharacter, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h');
                CHDecodePiotrRankCase(1, self.destFile, secondCharacter, 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p');
                CHDecodePiotrRankCase(2, self.destFile, secondCharacter, 'q', 'r', 's', 't', 'u', 'v', 'w', 'x');
                CHDecodePiotrRankCase(3, self.destFile, secondCharacter, 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F');
                CHDecodePiotrRankCase(4, self.destFile, secondCharacter, 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N');
                CHDecodePiotrRankCase(5, self.destFile, secondCharacter, 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V');
                CHDecodePiotrRankCase(6, self.destFile, secondCharacter, 'W', 'X', 'Y', 'Z', '0', '1', '2', '3');
                CHDecodePiotrRankCase(7, self.destFile, secondCharacter, '4', '5', '6', '7', '8', '9', '!', '?');
            default:
                NSAssert(NO,@"Invalid rank value");
                break;
        }
    }
    else
    {
        int fileDiff = self.destFile-self.sourceFile;
        char pieceToMove = [self pieceAtRank:self.sourceRank File:self.sourceFile];
        char promoteToPiece = self.promotingPiece;

        if(promoteToPiece > 90)
            promoteToPiece -= 32; //make promoteToPiece upper case

        if(pieceToMove == 'P')
        {
            switch(fileDiff)
            {
                case 0:
                    if      (promoteToPiece == 'N')   secondCharacter = '^';
                    else if (promoteToPiece == 'B')   secondCharacter = '#';
                    else if (promoteToPiece == 'R')   secondCharacter = '_';
                    else if (promoteToPiece == 'Q')   secondCharacter = '~';
                    else NSAssert(NO, @"Invalid promoting piece value %c", self.promotingPiece);
                    break;
                case 1:
                    if      (promoteToPiece == 'N')    secondCharacter = ')';
                    else if (promoteToPiece == 'B')    secondCharacter = '$';
                    else if (promoteToPiece == 'R')    secondCharacter = ']';
                    else if (promoteToPiece == 'Q')    secondCharacter = '}';
                    else NSAssert(NO, @"Invalid promoting piece value %c", self.promotingPiece);
                    break;
                case -1:
                    if      (promoteToPiece == 'N')     secondCharacter = '(';
                    else if (promoteToPiece == 'B')     secondCharacter = '@';
                    else if (promoteToPiece == 'R')     secondCharacter = '[';
                    else if (promoteToPiece == 'Q')     secondCharacter = '{';
                    else NSAssert(NO, @"Invalid promoting piece value %c", self.promotingPiece);
                    break;
                default:
                    NSAssert(NO, @"Invalid pawn promotion move - invalid file diff %d", fileDiff);
            }
        }
        else if(pieceToMove == 'p')
        {
            switch(fileDiff)
            {
                case 0:
                    if      (promoteToPiece == 'N')   secondCharacter = '^';
                    else if (promoteToPiece == 'B')   secondCharacter = '#';
                    else if (promoteToPiece == 'R')   secondCharacter = '_';
                    else if (promoteToPiece == 'Q')   secondCharacter = '~';
                    else NSAssert(NO, @"Invalid promoting piece value %c", self.promotingPiece);
                    break;
                case 1:
                    if      (promoteToPiece == 'N')    secondCharacter = ')';
                    else if (promoteToPiece == 'B')    secondCharacter = '$';
                    else if (promoteToPiece == 'R')    secondCharacter = ']';
                    else if (promoteToPiece == 'Q')    secondCharacter = '}';
                    else NSAssert(NO, @"Invalid promoting piece value %c", self.promotingPiece);
                    break;
                case -1:
                    if      (promoteToPiece == 'N')     secondCharacter = '(';
                    else if (promoteToPiece == 'B')     secondCharacter = '@';
                    else if (promoteToPiece == 'R')     secondCharacter = '[';
                    else if (promoteToPiece == 'Q')     secondCharacter = '{';
                    else NSAssert(NO, @"Invalid promoting piece value %c", self.promotingPiece);
                    break;
                default:
                    NSAssert(NO, @"Invalid pawn promotion move - invalid file diff %d", fileDiff);
            }
        }
    }
    return [NSString stringWithFormat:@"%c%c",firstCharacter,secondCharacter];
}