Rule 6 cancels 10 points when the Moon occupies the same sign as Mars, a combination classically called Chandra-Mangal yoga. It is the weakest rule of the ten, and it is the only one that will usually make your net score go up rather than down.
This page covers how rule 6 is evaluated, what it is worth, the cases where it interacts with other rules, and a worked example with the actual arithmetic.
How is rule 6 evaluated?
The Moon’s association is traditionally said to cool and stabilise Mars, softening how the dosha expresses. Our engine scores that at 10 points, the lowest weight in the set, using same-sign occupancy as the test.
Two things justify the low weight. First, Chandra-Mangal is classically a wealth yoga rather than a Dosha Bhanga condition — using it as dosha mitigation is a defensible extension of the association, but it is the weakest textual link among the ten rules. Second, and more importantly, the rule has a structural side effect that works against you.
Why does this rule usually raise the score?
Because if the Moon occupies the same sign as Mars, then Mars necessarily occupies the 1st house counted from the Moon — and the 1st house is one of the six trigger houses. Rule 6 cannot fire without simultaneously creating a Chandra Lagna trigger.
The arithmetic is not close. A 1st-house trigger from the Moon reference adds roughly 18 raw points, while the rule removes 10% of the total. In almost every chart, the trigger it creates outweighs the cancellation it grants.
Is that a flaw in the scoring?
No — it is an accurate consequence of two classical rules interacting, and we would rather surface it than hide it. The detection rule (Mars in the 1st from the Moon is a trigger) and the cancellation rule (Moon with Mars mitigates) come from different parts of the tradition and were never reconciled with each other. Our engine applies both faithfully and shows you the result.
What does rule 6 do to a real score?
Two charts, identical except for the Moon.
| Cancellation | Net score | Status | |
|---|---|---|---|
| Moon clear of Mars | 10% | 45 | Anshik |
| Moon conjunct Mars — rule 6 fires | 20% | 54 | Manglik |
The second chart has twice the cancellation and a worse result, and its status has moved from partial to full. Adding the Moon conjunction gained 10 points of mitigation and cost a 1st-house Chandra Lagna trigger worth more than that.
This is the single clearest illustration on the site of why cancellation count is a poor guide to severity. Read the net score, never the number of rules that fired.
What should you know before relying on this rule?
This rule is never absorbed, so it stacks with the others — but its practical value is close to nil, and it may be negative.
If your report shows Chandra-Mangal yoga, treat it as information about your chart rather than as good news. Check whether the Moon is your triggering reference point; if it is, this rule is very likely costing you more than it gives.
How does rule 6 compare with the other nine?
Rule 6 carries 10 of the 100 points available across the ten rules, and cancellation is capped at 85% in total — classical tradition treats a dosha as mitigated rather than erased, so no chart reaches zero.
The rules most worth reading alongside this one:
- Rule 4 — Jupiter aspect — read the rule
- Rule 5 — Guru-Mangal — read the rule
- Rule 10 — Navamsa — read the rule
The complete ten-rule reference sets all of them out together with their weights and sources.
Frequently asked questions
What is Chandra-Mangal yoga? The Moon and Mars occupying the same sign. In cancellation terms it is worth 10 points, the lowest of the ten rules.
Does Chandra-Mangal yoga help or hurt? It usually hurts the net score, because it necessarily creates a 1st-house trigger from the Moon reference that outweighs the 10 points it grants.
Why include a rule that makes things worse? Because it is a genuine classical cancellation condition and excluding it would misrepresent the tradition. We include it and explain the interaction.
Is Chandra-Mangal a wealth yoga? Classically, yes — that is its primary meaning. Its use as dosha mitigation is an extension, which is why it carries the lowest weight.
Does a degree orb apply? No. Same-sign occupancy is the test.
Should I want this yoga in my chart? For Mangal Dosha purposes, generally not. For its classical wealth significations, that is a separate question this scoring does not address.
Where to go next
To see which of the ten rules actually fire on your chart rather than reading them in the abstract, run the cancellation calculator — it reports every rule tested, including those that did not apply and those that could not be evaluated. Our methodology documents how the weights are derived and where our scoring decisions depart from classical instruction.