IID (skipped when in check and Score greater than alpha)

[tomitank]

Only in a PV node?

1. is without IID?

Time control?

[hgm]

I don't really know what you mean by robustness. How do you define it? And how do you measure it? (To be clear, these are not rhetorical questions: I genuinely want to know your answers.)

'Robust' means that it always works, even in pathological cases.

One way to measure it would be to take the worst ratio of the node counts of two subsequent iterations, on a large set of test positions. Large ratios indicate pathological situations (e.g. where it has to change PV).

[AlvaroBegue]

I don't really know what you mean by robustness. How do you define it? And how do you measure it? (To be clear, these are not rhetorical questions: I genuinely want to know your answers.)

'Robust' means that it always works, even in pathological cases.

One way to measure it would be to take the worst ratio of the node counts of two subsequent iterations, on a large set of test positions. Large ratios indicate pathological situations (e.g. where it has to change PV).

That's a good idea. I should make a test for that so I can run it after every change.

Thanks for the idea!