Classical Geomancy · Shield Chart · Ilm al-Raml
What Is Geomancy?
A strict question method built from odd and even marks. Cast four mothers, derive the daughters, nieces, witnesses, judge, and outcome, then inspect every rule that produced the shield.
How This Cast Is Built
A machine-usable implementation of the procedural spine from the dossier.
Four Mothers
The first sixteen marks are reduced to odd or even rows, producing four mother figures.
Parity Combination
Daughters are read from the mothers; nieces, witnesses, and judge are made by row-wise odd/even combination.
Judge and Outcome
The fifteenth figure is checked for evenness, then the outcome is formed from the first mother and the judge.
Why Geomancy Belongs Here
It is not modern personality content. It is a rule-governed classical question system.
Geomancy is an older divinatory art known in the Arabic tradition as ilm al-raml, the science of sand. A question is reduced to a set of odd and even rows, and those rows generate a full shield chart by fixed procedure.
That is why it fits this site. Traditional Astrology already favors techniques where the calculation can be audited: sect, dignities, house rulership, planetary motion, and horary perfection. Geomancy has the same appeal. The first figures determine the rest; the witnesses determine the judge; the judge must pass a validity rule.
The Strict Rules
The result is derived, not improvised.
Odd or Even Lines
Each line count is reduced to one dot if odd, two dots if even. Four rows make one figure, and the first sixteen rows make the four mothers.
Daughters From Rows
The daughters are not separately chosen. They are extracted across the mothers: top rows form the first daughter, second rows form the second, and so on.
Combination by Parity
Later figures come from combining rows. Matching rows produce two dots; different rows produce one dot. This creates the nieces, witnesses, judge, and final outcome.
Judge Validity
The judge, the fifteenth figure, must have an even total. If the judge has an odd total, the cast is invalid and should be rejected rather than interpreted.
The Shield Positions
Sixteen places, each generated from the figures before it.
Mothers
Positions 1-4 are the only figures directly cast from line counts. They are the seed of the whole chart.
Daughters
Positions 5-8 are drawn from the rows of the mothers. They reveal what was already contained in the original cast.
Nieces
Positions 9-12 are generated by combining mothers and daughters, narrowing the chart toward judgement.
Witnesses
Positions 13 and 14 are the questioner and asked-about witnesses, representing the two sides brought before the judge.
Judge
Position 15 is the balancing figure. It must be even, and it carries the strongest summary of the cast.
Outcome
Position 16 reconciles the first mother with the judge, giving a final derived outcome rather than a new random sign.
Geomancy and Horary
Two question systems, two rule sets.
Geomancy answers through a shield chart derived from parity. Horary answers through an astrological chart for the moment and place of the question. Both are useful here because both are structured systems with strict internal rules.
The free geomancy tool is best for seeing the shield logic directly. The Horary Oracle is the paid planetary version: $5/month for unlimited focused questions, calculated from Swiss Ephemeris positions, Regiomontanus houses, significators, applying aspects, reception, and strictures against judgement.
Ask a Planetary Question Instead
Horary is the astrological companion to geomancy: a deterministic rules engine for focused questions, unlocked for $5/month.
Open the Horary Oracle