Magical gene / ground and strong white

Black Holes

Solid hard-edged patches with scalloped margins, dropped anywhere at all - face, limbs, belly, over the base of the mane - each with a satellite dot or two beside it.

What it can come out as

Outcome	Carrying
Black Holes	`Bhl/Bhl` · `Bhl/n`
Wild type	`n/n`

How each one is actually drawn - region by region, and the layers it is built from - is on the coding tab.

Crossing two of them

Finding one

About 1 in 2,500 wild horses is born showing this. That is the whole of the supply: catch one, or make one with the carrot below. Breeds set their own pools and a breed built around this gene will carry it far more often than the wild population does.

Wild pair	Shows as	How often
`Bhl/Bhl`	Black Holes	0.002% — 1 in 50,000
`Bhl/n`	Black Holes	0.038% — 1 in 2,632
`n/n`	Wild type	99.96%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/black_holes.json — a data-driven gene, not a Java class. It is listed in the index.json beside it and registered by Genes' class initialiser at startup.

Key	`horsegenetics.black_holes`
Phase	magical — it adds signed colour in phase 3, after the pigment has resolved
Priority	213 — where it sits in the one `(priority, key)` paint order
Alleles	`Bhl` · `n`
Varies per horse	3 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built from	PATCHES, SPECKLE, SPOTS, TOWARD

What it paints

Each outcome, described the way the gene file describes it, and then the layers that draw it in the order they are painted. The prose is the part a reader checks a bake against; the list underneath is what the engine actually did.

Black Holes

Three to twelve solid patches a side, longer than they are tall and lying roughly nose-to-tail, with margins that are hard but scalloped rather than smooth. Placement is unrestricted: unlike almost everything else, these can land on the face, the lower legs, the belly midline or across the base of the mane. About a fifth of them carry one to three small dots just outside the margin. The fill is one thing per horse, either the animal's own main coat colour or flat black regardless of it.

the patches — PATCHES × SPECKLE, painted with TOWARD
the satellite dots — SPOTS, painted with TOWARD

Wild type

No holes.

Paints nothing.