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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
  • 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

Keep play fast

Use quick references, then jump back into the scene.