Spies and unrest

[mivayan]

thejeff said:
The second time I already had roughly 150 unrest there. He had the standard capital 25 PD and judging from the troops that attacked my poor spies another 60 or so patrolling. With the penalty from unrest his chances should have been slim, but he caught all 4 spies.

Is the roll only made once for patrolling, so if he got a good open-ended roll all stealthy units are likely to be caught?

Perhaps the ai only patrolls once now and then.

Manuals formula for stealth strength: 40 + 20 (spy's stealth bonus) = 60
Destealth strength: 60 (Sum of destealth strength of patrollers, about 60 guys, probably without bonuses or fly) - 50 (unrest /2, capped at unrest100) + 16 (for province defence of 25, assuming the ai never raised it) = 35.

The spy is found if 35 + 2d25 (open ended) > 60 + 2d25 (open ended)

Catching all four at once is a bit lucky but nowhere near requiring the open-ended part of the die rolls.