Why x2?

May be because of tie (exactly 50% APS) - in this case both bots get by 1 point.

Or 0.5 points without the multiplier.

Lolz. I remember that I was very supporting of the idea to measure how "undefeatable" a bot was. But I can't recall being the one to use the PL analogy. I do remember fighting fiercely for focusing on plain Average Percent Scores and not all that ELO hoochie coochie, but lost that argument back then. It feels like a glitch in the matrix when you remind me of the old PL discussions, because one of the first questions I had when "returning" to Robocode this time was "What is APS?". =)

Funny, I feel like a bunch of stuff you used to advocate for came to fruition in your absence. APS is one. Another is that we now do a pretty good job separating out gun terminology like Visit Count Stats, GuessFactors, Pattern Matching, and Play It Forward, instead of using confusing names for multi-part systems, like “GuessFactor Targeting” == VCS + Segmentation + GFs or “TronsGun” == KNN + PIF.

PS - Can you see more than 3 replies now, or still having that problem?

I have no troubles reading the full threads any longer. I like how I get notified when there are replies to threads I've engaged in. Just wish there was a Like button. =)

Or, maybe, it was Pulsar. I'm sure, that it was European, but not Englishman and i think it was Swede. I saw conversation about it somewhere in old wiki, i think