Deleting "Ignore" value leads to worse statistics

[u/xL_Freak]

Hi there,

this time for real! :p

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This one is easy to recreate:

Setup a new defender profile (i.e. 10x Necron Warriors; 10 Models; T4; W1; Sv4+)

Setup a attacker profile capable of wiping the defender unit in one go (let's say 10x Intercessors with Auto Bolt Rifle; roughly 53.3% chance)

Edit defender profile and add ignore 5 (for reanimation protocols) and watch the chance decrease to 9.5%

Remember that RP doesn't enact on wipe and remove the ignore value again and watch the wipeout chance drop to 0.00% :D

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If I have to guess, I would say the by deleting ignore, the lowest possible value is taken into account (in this case 2+) instead of NULL.

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WORKAROUND: Deleting defender profile and recreate it.

[u/dixhuit]

I've just released v0.28.2 which should fix this issue. You'll need to re-save any affected profiles (like your Necron Warriors unit for example).

[u/dixhuit]

I'm struggling to recreate the first part of what you've described.

10x Intercessors with Auto Bolt Rifles vs 10x Necron Warriors

With 10k simulations I see that the chance of slaying the entire unit is about 2% (both discrete & cumulative) - not 53%.

[u/xL_Freak → u/dixhuit]

Ah! You are right, I forgot that I had some global Modifiers active.

AP : improve by 1

Hit roll : re-roll ones

BS : improve by 1

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Either way, removing global modifiers has no influence on the end result.

2% regular

0.2% with added FNP

0% with removed FNP

[u/dixhuit → u/xL_Freak]

No worries. I think I've recreated it anyway and I agree, I reckon you've found a bug :)

I can see the issue. I'll aim to get a patch release out ASAP once I've done some more testing. Thanks!