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Dice mechanics

Contested rolls in Call of Cthulhu 7th Edition

Opposed checks and ties.

Explanation

Opposed checks in CoC compare outcomes on the percentile scale: highest success level wins, ties go to the higher skill. Use them when two actors directly compete and the scene needs a clear winner — chases, grapples, persuasion duels.

Examples
Example: direct contest

Use opposed rolls when two actors directly compete (chase, grapple, deception vs insight). Resolve it quickly and move on.

Example: avoid unnecessary contests

If the opposition is passive (a lock, a cliff), use a DV/DC instead of rolling twice.

Common mistakes (smallest fix)
  • Mistake: Using contests for everything. Fix: Use contests only for direct opposition; use DV/DC for passive obstacles.
  • Mistake: Re-rolling until someone wins. Fix: One contest should change the situation enough to move the scene forward.
Roll resolution cheat sheet
System guide
Learn the system’s core rules.
System glossary
Definitions for dice terminology.

Call of Cthulhu 7th Edition FAQ

How does the percentile system work in Call of Cthulhu?
How does the skill improvement system work?
What are the Characteristics in Call of Cthulhu 7e?
How does Sanity work in Call of Cthulhu?
What are Occupations in Call of Cthulhu?

Keep play fast

Use quick references, then jump back into the scene.

Contested rolls in Call of Cthulhu 7th Edition | RPG Stack