The 3-Coin Method: How to Consult the I Ching

For millennia, consulting the I Ching was an act reserved for initiates. The ritual required 50 yarrow stalks, a meticulous process of dividing and counting repeated eighteen times to obtain a single hexagram. The operation took between twenty and forty minutes, in absolute meditative silence. Only court diviners, Taoist monks, and Confucian scholars mastered its subtleties.

Then the Ming dynasty (1368-1644) changed the game. By replacing the yarrow stalks with three coins, the scholars of that era accomplished something revolutionary: they democratized the oracle. From a complex ritual accessible to an elite, the I Ching became a practice anyone could adopt, at home, with no prior training.

"Don't be daunted by the complexity of the I Ching and start by having fun. This work was conceived in a playful spirit, so don't hesitate — go directly to consult the Oracle since that is what draws you."
— Marie-Noelle Doublet, Mieux vivre avec le Yi King (translated from French)

It is precisely this democratization that gave its name to MING, the artificial intelligence of Virtual I-Ching. A direct tribute to the dynasty that made the oracle accessible to all. Today, MING extends this mission by offering everyone, in 13 languages, the ability to consult the I Ching and receive a personalized interpretation.

The original method: the 50 yarrow stalks

Before understanding the coin method, one must know what it replaced. The yarrow stalk ritual is described in the Great Appendix (Xi Ci) of the I Ching itself. Yarrow — Achillea millefolium — was considered a sacred plant by the ancient Chinese, endowed with divinatory properties.

The ritual begins with 50 stalks. One is removed, representing the Taiji — the primordial unity — and will not be used again. With the remaining 49 stalks, one performs a series of divisions and counts in four steps, repeated three times to obtain a single line of the hexagram. Since a hexagram has six lines, the entire process must be repeated six times — that is, eighteen manipulations in total.

This method produces different probabilities than the coin method: with the stalks, the probability of obtaining an old yang (9) is 3/16, a young yang (7) is 5/16, a young yin (8) is 7/16, and an old yin (6) is 1/16. Moving lines are therefore relatively rare, and young yin is more frequent than young yang. With coins, the probabilities are more symmetrical, as we shall see.

Despite its ritual beauty, the stalk method had a major flaw: its complexity made it inaccessible to most people. The oracle remained a prisoner of temples and palaces.

The Ming innovation: three coins, six tosses

The scholars of the Ming dynasty had a brilliant insight: three coins tossed simultaneously can produce the same four types of lines as the yarrow stalks, in a fraction of the time. The principle is of remarkable mathematical elegance.

Each coin has two sides:

• The yin side — traditionally the inscribed side — is worth 2
• The yang side — traditionally the plain side — is worth 3

The three coins are tossed together and their values added. The four possible results are:

• 6 (2+2+2) — Three yin sides. This is old yin, a moving yin line. It is yin but will transform into yang.
• 7 (2+2+3) — Two yin, one yang. This is young yang, a stable yang line. It stays yang.
• 8 (2+3+3) — One yin, two yang. This is young yin, a stable yin line. It stays yin.
• 9 (3+3+3) — Three yang sides. This is old yang, a moving yang line. It is yang but will transform into yin.

The probabilities with coins are perfectly symmetrical: old yin (6) and old yang (9) each have a probability of 1/8 (12.5%), while young yang (7) and young yin (8) each have a probability of 3/8 (37.5%). Moving lines are therefore relatively rare events — they occur only a quarter of the time — which gives them particular significance in a casting.

Building the hexagram: from bottom to top

To obtain a complete hexagram, the toss is repeated six times. A crucial point: the lines are built from bottom to top, exactly as a house is built from the foundations. The first line tossed is the bottom line (line 1), the last is the top line (line 6).

Let us take a concrete example. Imagine six successive tosses:

• Toss 1 (bottom line): 2+3+3 = 8 -> Young yin (stable) — —
• Toss 2: 3+3+3 = 9 -> Old yang (moving) ———○
• Toss 3: 2+2+3 = 7 -> Young yang (stable) ———
• Toss 4: 2+2+3 = 7 -> Young yang (stable) ———
• Toss 5: 2+2+2 = 6 -> Old yin (moving) — —×
• Toss 6 (top line): 2+3+3 = 8 -> Young yin (stable) — —

This hexagram has two moving lines — line 2 (old yang) and line 5 (old yin). These lines are the heart of your reading: they indicate the points of active transformation in your situation.

The second hexagram: the perspective hexagram

When a hexagram contains moving lines (value 6 or 9), those lines transform into their opposite: old yang (9) becomes yin, old yin (6) becomes yang. Stable lines (7 and 8) remain unchanged. This transformation produces a second hexagram — the perspective hexagram — which shows what direction your situation is evolving toward.

The first hexagram is your present situation. The second is the direction of change. Together, they form a dynamic picture — a snapshot that captures not only what is, but what is becoming. It is this temporal dimension that distinguishes the I Ching from all other divination systems.

If no toss yields a 6 or a 9, there are no moving lines and therefore no second hexagram. The situation is in a state of relative stability — the message is contained entirely in the single hexagram obtained.

Going digital: how Virtual I-Ching reproduces the casting

Virtual I-Ching faithfully reproduces the three-coin method in a digital environment. Each consultation simulates six tosses of three coins, with the exact same probabilities as physical coins. But the fundamental question is: where does the randomness come from?

The platform offers two modes:

Zen Mode uses a pseudo-random generator (PRNG). The randomness is calculated by your browser via deterministic algorithms. This mode is free, unlimited, perfect for exploring the I Ching and learning to understand it. It is mathematical randomness — unpredictable in practice, but theoretically reproducible.

Quantum Mode uses a certified quantum generator (QRNG) supplied by Quantum Blockchains, a company based in Poland (European Union). This generator measures quantum vacuum fluctuations — a physical phenomenon that is fundamentally unpredictable, that even infinite computing power could not predict. It is the purest randomness that science can produce.

"If I have allowed myself some liberties, I had to remain connected to the source."
— Marie-Noelle Doublet, Mieux vivre avec le Yi King (translated from French)

Remaining "connected to the source": that is exactly the spirit of Quantum Mode. By replacing the algorithm with quantum vacuum fluctuations, Virtual I-Ching does not merely simulate randomness — it plugs into the fundamental indeterminacy of the universe.

Formulating your question: the art of asking well

The quality of your consultation depends as much on your question as on your hexagram. The I Ching is not a vending machine for ready-made answers — it is a mirror that reflects the deep nature of your situation. You still need to know what to show it.

Closed questions — those that call for a yes or no — do not work well with the I Ching. "Am I going to get that promotion?" leads nowhere. The I Ching does not predict; it illuminates.

Prefer open and sincere questions:

• "What is the nature of my current professional situation?"
• "How should I approach this important decision?"
• "What do I need to understand about this relationship?"
• "What attitude should I adopt in the face of this change?"

Sincerity is the first condition. There is no point in asking a question if you have already decided the answer. The I Ching speaks to those who question it with an open heart — ready to hear what they do not yet know, or what they refuse to see.

A practical tip: take a moment of calm before formulating your question. Write it down if possible. The more precise and honest your question, the more relevant the answer will be. Not because the oracle reads your thoughts, but because a well-formulated question forces you to clarify what truly concerns you — and that clarification is already the beginning of the answer.

From the Ming dynasty to your screen

Seven centuries ago, Chinese scholars had the courage to simplify a millennial ritual to make it accessible to all. They were criticized by the purists of their era — and yet it is thanks to them that the I Ching became the most consulted oracle in the world.

Virtual I-Ching follows in this lineage. By bringing the three-coin method into the digital age — with the choice between classical and quantum randomness — the platform continues the mission begun under the Ming dynasty: putting the wisdom of the I Ching in everyone's hands, without barriers of language, culture, or prior knowledge.

Three coins, six tosses, 64 possible hexagrams, 4,096 combinations with mutations. And behind each combination, five thousand years of human wisdom awaiting your question.