## Sunday 15 May 2016

There are many I Ching card decks available. Artists and graphics experts have been inspired by the I Ching to create some really intersting design.

Below there's a gallery (by no mean complete) of I Ching decks that are available or extensively reviewed on the Web.

Each deck contains 64 cards: one for each hexagram. Each card displays, besides the hexagram itself, other information like its number and its name; most decks also display an ispirational image that may be directly inspired to the I Ching traditional text or to a specific theme the deck is related to.

#### Getting the entire hexagram

The easiest way to get an hexagram using an I Ching deck is to shuffle it, pick a card and look at the heaxgram depicted on the card. If the procedure is done correctly, each hexagram has the same probability: 1/64. No moving lines.

#### Casting one line at the time

To get the lines one by one use the following procedure:
1. Shuffle the deck and pick a card;
2. Draw the topmost line of the hexagram;
3. Get two other cards;
4. If topmost lines of both cards are of the same type of the drawn line, then it is a moving line;
5. Reinsert the cards in the the deck ;
6. Repeat step 1 to 5 other five times drawing the resulting lines from the bottom to the top of the hexagram.
This will generate lines with probabilities very close to the three coins method (with slightly lower probability for moving lines):

Prob(6) = Prob(9) = (32*31*30)/(64*63*62) = 29760/249984 = 11.9%
Prob(8) = Prob(7) = 3*(32*32*31)/(64*63*62) = 95232/249984 = 38.1%
Prob(yin) = Prob(yang) = 1/2

#### Variations

Alternatively you can generate six hexagrams from which derive six line using the process described for the I Ching Book method. It is reccomended that you reinsert the card every time.