One-Eyed Jacks

One-Eyed Jacks is a very unique wild card game which is similar to Double Joker Poker, except instead of having two Jokers as the wild cards, the Jack of Hearts and the Jack of Spades are the wild cards. They can also act as natural cards to complete a Natural Royal Flush. All of these factors combined result in a very difficult and peculiar strategy, the majority of which is divided into Clubs and Diamonds vs. Hearts and Spades. This is one of the few games that a casino can comfortably offer with a player-advantage paytable without having to worry about being beaten frequently, due to the bizarre and complex strategy.

Because this game is suit-specific, the simplified deck is not as small as it is for most games. Instead of eliminating 95% of the processing time, only 73% can be eliminated. If you run a strategy guide or analyze a paytable, please be aware that it will take at least 5 minutes to analyze the game.

Deck Simplification

Hand Scoring Code

int GetHandType(int C1, int C2, int C3, int C4, int C5)
{
    int Hand = 0;

    int R1 = Rank[C1],
        R2 = Rank[C2],
        R3 = Rank[C3],
        R4 = Rank[C4],
        R5 = Rank[C5];

    int S1 = Suit[C1],
        S2 = Suit[C2],
        S3 = Suit[C3],
        S4 = Suit[C4],
        S5 = Suit[C5];

    bool Flush = (S1 == S2) && (S2 == S3) && (S3 == S4) && (S4 == S5);

    if (R1 > R2) { R1 ^= R2; R2 ^= R1; R1 ^= R2; S1 ^= S2; S2 ^= S1; S1 ^= S2; }
    if (R1 > R3) { R1 ^= R3; R3 ^= R1; R1 ^= R3; S1 ^= S3; S3 ^= S1; S1 ^= S3; }
    if (R1 > R4) { R1 ^= R4; R4 ^= R1; R1 ^= R4; S1 ^= S4; S4 ^= S1; S1 ^= S4; }
    if (R1 > R5) { R1 ^= R5; R5 ^= R1; R1 ^= R5; S1 ^= S5; S5 ^= S1; S1 ^= S5; }
    if (R2 > R3) { R2 ^= R3; R3 ^= R2; R2 ^= R3; S2 ^= S3; S3 ^= S2; S2 ^= S3; }
    if (R2 > R4) { R2 ^= R4; R4 ^= R2; R2 ^= R4; S2 ^= S4; S4 ^= S2; S2 ^= S4; }
    if (R2 > R5) { R2 ^= R5; R5 ^= R2; R2 ^= R5; S2 ^= S5; S5 ^= S2; S2 ^= S5; }
    if (R3 > R4) { R3 ^= R4; R4 ^= R3; R3 ^= R4; S3 ^= S4; S4 ^= S3; S3 ^= S4; }
    if (R3 > R5) { R3 ^= R5; R5 ^= R3; R3 ^= R5; S3 ^= S5; S5 ^= S3; S3 ^= S5; }
    if (R4 > R5) { R4 ^= R5; R5 ^= R4; R4 ^= R5; S4 ^= S5; S5 ^= S4; S4 ^= S5; }

    if (Flush && (R1 == 8))
    {
        Hand = 10;              // Natural Royal Flush
    }
    else
    {
        if ((R1 == 9) && (S1 > 1)) { R1 = 13; S1 = 4; }
        if ((R2 == 9) && (S2 > 1)) { R2 = 13; S2 = 4; }
        if ((R3 == 9) && (S3 > 1)) { R3 = 13; S3 = 4; }
        if ((R4 == 9) && (S4 > 1)) { R4 = 13; S4 = 4; }
        if ((R5 == 9) && (S5 > 1)) { R5 = 13; S5 = 4; }

        if (R1 > R2) { R1 ^= R2; R2 ^= R1; R1 ^= R2; S1 ^= S2; S2 ^= S1; S1 ^= S2; }
        if (R1 > R3) { R1 ^= R3; R3 ^= R1; R1 ^= R3; S1 ^= S3; S3 ^= S1; S1 ^= S3; }
        if (R1 > R4) { R1 ^= R4; R4 ^= R1; R1 ^= R4; S1 ^= S4; S4 ^= S1; S1 ^= S4; }
        if (R1 > R5) { R1 ^= R5; R5 ^= R1; R1 ^= R5; S1 ^= S5; S5 ^= S1; S1 ^= S5; }
        if (R2 > R3) { R2 ^= R3; R3 ^= R2; R2 ^= R3; S2 ^= S3; S3 ^= S2; S2 ^= S3; }
        if (R2 > R4) { R2 ^= R4; R4 ^= R2; R2 ^= R4; S2 ^= S4; S4 ^= S2; S2 ^= S4; }
        if (R2 > R5) { R2 ^= R5; R5 ^= R2; R2 ^= R5; S2 ^= S5; S5 ^= S2; S2 ^= S5; }
        if (R3 > R4) { R3 ^= R4; R4 ^= R3; R3 ^= R4; S3 ^= S4; S4 ^= S3; S3 ^= S4; }
        if (R3 > R5) { R3 ^= R5; R5 ^= R3; R3 ^= R5; S3 ^= S5; S5 ^= S3; S3 ^= S5; }
        if (R4 > R5) { R4 ^= R5; R5 ^= R4; R4 ^= R5; S4 ^= S5; S5 ^= S4; S4 ^= S5; }

        if (R4 == 13)
        {
            Flush = (S1 == S2) && (S2 == S3);

            if (Flush)
            {
                if (R1 >= 8)
                {
                    Hand = 9;       // Wild Royal Flush
                }
                else if (((R3 - R1) <= 4) || ((R3 == 12) && (R2 <= 3)))
                {
                    Hand = 7;       // Straight Flush
                }
                else
                {
                    Hand = 4;       // Flush
                }
            }
            else
            {
                if ((R1 == R2) && (R2 == R3))
                {
                    Hand = 8;       // Five of a Kind
                }
                else if ((R1 == R2) || (R2 == R3))
                {
                    Hand = 6;       // Four of a Kind
                }
                else if ((((R3 - R1) <= 4) || ((R3 == 12) && (R2 <= 3))) && (R1 != R2) && (R2 != R3))
                {
                    Hand = 3;       // Straight
                }
                else
                {
                    Hand = 2;       // Three of a Kind
                }
            }
        }
        else if (R5 == 13)
        {
            Flush = (S1 == S2) && (S2 == S3) && (S3 == S4);
            if (Flush)
            {
                if (R1 >= 8)
                {
                    Hand = 9;       // Wild Royal Flush
                }
                else if (((R4 - R1) <= 4) || ((R4 == 12) && (R3 <= 3)))
                {
                    Hand = 7;       // Straight Flush
                }
                else
                {
                    Hand = 4;       // Flush
                }
            }
            else
            {
                if ((R1 == R2) && (R2 == R3) && (R3 == R4))
                {
                    Hand = 8;       // Five of a Kind
                }
                else if ((R2 == R3) && ((R1 == R2) || (R3 == R4)))
                {
                    Hand = 6;       // Four of a Kind
                }
                else if ((R1 == R2) && (R3 == R4))
                {
                    Hand = 5;       // Full House
                }
                else if ((((R4 - R1) <= 4) || ((R4 == 12) && (R3 <= 3))) &&
                           (R1 != R2) && (R2 != R3) && (R3 != R4))
                {
                    Hand = 3;       // Straight
                }
                else if ((R1 == R2) || (R2 == R3) || (R3 == R4))
                {
                    Hand = 2;       // Three of a Kind
                }
            }
        }
        else
        {
            if (Flush)
            {
                if ((R1 == (R2 - 1)) &&
                    (R2 == (R3 - 1)) &&
                    (R3 == (R4 - 1)) &&
                   ((R4 == (R5 - 1)) || ((R1 == 0) && (R5 == 12))))
                {
                    Hand = 7;       // Straight Flush
                }
                else
                {
                    Hand = 4;       // Flush
                }
            }
            else
            {
                if ((R2 == R3) && (R3 == R4) && ((R1 == R2) || (R4 == R5)))
                {
                    Hand = 6;       // Four of a Kind
                }
                else if ((R1 == R2) && (R4 == R5) && ((R3 == R1) || (R3 == R4)))
                {
                    Hand = 5;       // Full House
                }
                else if ((R1 == (R2 - 1)) &&
                 (R2 == (R3 - 1)) &&
                 (R3 == (R4 - 1)) &&
                ((R4 == (R5 - 1)) || ((R1 == 0) && (R5 == 12))))
                {
                    Hand = 3;       // Straight
                }
                else if (((R1 == R2) && (R2 == R3)) ||
                 ((R2 == R3) && (R3 == R4)) ||
                 ((R3 == R4) && (R4 == R5)))
                {
                    Hand = 2;       // Three of a Kind
                }
                else if (((R1 == R2) && (R3 == R4)) ||
                 ((R1 == R2) && (R4 == R5)) ||
                 ((R2 == R3) && (R4 == R5)))
                {
                    Hand = 1;       // Two Pair
                }
            }
        }

    }

    return Hand;
}