Chain, Breaking:

To find out the % chance to break a 1/2" chain, see the following chart:
See: Note - 3

Condition
of chain: Chance vs. Strength:
Poor: (Strength ÷ 3 (-1) = % chance to break chain successfully.
Fair: (Strength ÷ 4 (-2) = % chance to break chain successfully.
Good: (Strength ÷ 5 (-3) = % chance to break chain successfully.
Very good: (Strength ÷ 6 (-4) = % chance to break chain successfully.
Excellent: (Strength ÷ 7 (-5) = % chance to break chain successfully.
Superb: (Strength ÷8 (-6) = % chance to break chain successfully.

Example:
A character with a strength of 37 attempts to break a chain "Fair" condition.
He would have a 6% chance of success
(37 ÷ 4 = 8 (-2) = 6% chance

Notes:
1
Only one single attempt can be made to break a chain per person or creature.

2
All calculations will be rounded down to the nearest % (i.e., A person with a strength of 31 attempts to break a chain “Poor” condition: 31 ÷ 3 = 10 with 1 remaining. Drop the 1 = 10% chance to successfully break a chain).

3
For every 1/2" more thick a chain is, the % chance will be cut by 1/2 (rounded down).