Chaos Space Marines: rules coverage (2026-10-02)

T-541, the first batch of T-542 (Jordan, 2 Oct, before sleeping: "add all special rules to units, all detachment rules, at the very least"). Made by node tools/coverage.js --faction "Chaos - Chaos Space Marines" from docs/data/unitfx.json, leaderfx.json, detfx.json and armyfx.json; each ability read on Wahapedia's 11th-edition pages and written in our own words. A report: the calculator reads the dice effects (units' own behind flags.json's "unitfx"); nothing here changes a published score or letter.

Statuses. Modelled: the dice effect is all of it. Partly: some of it is dice, the rest noted. Noted: nothing for the dice; where it would be, can't yet says what the engine lacks. Unread: not in our data yet. An effect that starts off in the calculator (a damaged bracket, a rare condition) is marked so; the player switches it on.

Totals

A datasheet counts as modelled when every ability on it is dice, partly when some are, noted when none are.

What's here. Every Chaos Space Marines datasheet in BSData's catalogue at our commit (the three Crucible characters aside), read against Wahapedia's 11th-edition page on 2 Oct, and the 17 detachments. Dark Pacts, the army rule, is in armyfx.json as a pick each time a unit shoots or fights (Lethal Hits or Sustained Hits 1). The Leadership test and the D3 mortal wounds on a failure aren't in the maths. Cult of the Dark Gods is noted.

Decisions taken alone.

• BSData lists two kinds of names among unit abilities. These are noted rather than read as abilities:
  • The Marks of Chaos (Khorne, Nurgle, Slaanesh, Tzeentch): picked at muster, they matter only under Pactbound Zealots.
  • The Crusade Chaos Boons (Warp Stalker, Eightfold Eyes and the rest): Crusade rules, not matched play.
• Pactbound Zealots' Marks of Chaos is now a pick of the unit's Mark. Each Mark gives criticals on 5+ for melee or shooting, or re-rolled hit 1s for Undivided. The switch is by hand, because a passed Dark Pact isn't in the maths.
• Re-rolls that widen from 1s to all start off with their condition named: Legionaries, Rubric Marines and the Armoured Spearhead tanks. Once-a-battle effects start off too: Chance for Glory, Unholy Bloodshed and Dark Ritual. So does the Forgefiend's Daemonic Ordnance, because it costs Hazardous.
• Formidably Resilient (the Terminator Lord halves damage) is partly. Halving only the Lord's own model is a leader-only mod, so it's set for the Lord on his own.
• Plague Marines' Blessings is noted as having no effect in this army, as the page's FAQ says.

What the army needs next. The Dark Pact's Leadership test and its mortal wounds on a failure come first: every unit uses them. Then the marks one unit puts on a target (Focus of Hatred is in; Spirit Thief and Death Hex reach the whole army), and Precision.

Vocabulary gaps, by how many units need each

What the engine would need to model the rest, from each rule's can't yet and kind; a unit counts once per gap.

Datasheets

Every ability

Leaders: what they give the unit they lead (leaderfx.json)

Core abilities on the datasheets that touch the dice

Detachments

Enhancements (upgrades for one character; never in the calculator or the letters yet)

Stratagems (names only; their dice are a later card)

Army rules (armyfx.json)