Does anyone know where I might find calculated odds of success against the Ease Factors most commonly used in ArM? Even better if it includes a matrix referencing different skill levels vs. each EF.

roll | percent |
---|---|

0 | 100 |

1 | 90 |

2 | 90 |

3 | 80 |

4 | 70 |

5 | 59 |

6 | 49 |

7 | 38 |

8 | 28 |

9 | 16.9 |

10 | 6.9 |

11 | 5.9 |

12 | 5.9 |

13 | 4.8 |

14 | 4.8 |

15 | 3.8 |

16 | 3.8 |

17 | 2.69 |

18 | 2.69 |

19 | 1.69 |

20 | 1.69 |

21 | 0.59 |

it does obviously depend on whether you are using a simple or stress die...

Yes. But the probability distribution of the simple die is very... well, simple.

@Tugdual, will your table work as a "sliding scale" to incorporate Characteristics and Skills?

If, for example, a grog with +1 Perc and 5 skill in shotgun is fighting a vampire in our saga with light conditions that give him an Ease Factor of 12 for the shot, would I "slide" these percentages so that 6 is now 100%, making 12 a 49% probability of success? (Wait, make that 8 at 100%, our HR long guns are +2 on Attack).

Yes, that's the raw stress dice roll.

With an EF 12 and a 5+1+2 for a HR long gun, that leaves 4 points for the dice roll for 70% success.

OTOH, 100% success assumes a roll of zero is not a botch.

So I grokked how the table worked but botched Remember Stress Die Rules:)

Thanks for the table and clarification.