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Rules of Interpretation:  a summary of rules from various contemporary authors, in some cases handed down from others.

Chu Hsi’s Rules of interpretation from I-hsüeh ch’i meng (Introduction to the Study of the Classic of Change), with an analysis of the difficult rule for three changing lines in particular.

The Nanjing Rules as derived from the Zuo Commentary and Guoyu, with a simplification based on analysis of the data, what I personally think of the rules, and why.

The Foursome Pairs:  a list of the hexagrams showing each pair’s reversed opposite, in most cases creating a “foursome.”  Plus an alternate binary sequence, preserving a number of symmetries in the ordering.

The Anti-Hexagram, made by changing the non-moving lines in the original hexagram, is what the current situation is not changing into, or what is being avoided by the indicated change.  Here is an explanation of its relationship to the other hexagrams, and some examples of its use.

Ascending Hexagrams are the five overlapping hexagrams that link a pair of hexagrams.

The Pang Tong Yao:  the I Ching, with the hexagrams presented as pairs of reversed, rather than inverted, opposites, for detailed comparison of the judgments and line texs.  A companion to the previous two pages.

The Boolean I Ching displays selected hexagrams in pairs, and the hexagrams resulting from the application of the boolean operators AND, OR, XOR, XNOR, and NOT.  You can browse the various combinations to your heart’s content.

The Graphic I Ching:  what the yin and yang lines look like when expressed graphically, according to six different ordering schemes.

Using coins to consult the I Ching.  These are the simplest, most logical, and easiest to remember coin methods.  Four coins reproduce the yarrow stalk probabilities; three coins retain the traditional coin probabilities.

Using playing cards to consult the I Ching.  The origin of this method had nothing to do with blackjack.  Honest, I swear.

Memory wheels are sequences of 64 digits that contain all the hexagrams of the I Ching in an overlapping sequence.

Hexagram Triage is an idea that just came to me one day.