[Guide] THE HUNT IS ON! An In-depth Guide on Pokeradar and HAs Hunting [Ver. 2.0].

[EeveeBailey]

"Fixed bug where PokeRadar chains would randomly break for no reason (Yes we ACTUALLY fixed it this time)"

Um... Yeah... About that... See, there have been times when I would enter the shaking grass patch, a battle would conclude... but then my chain would break for no reason... And this happened like five damn times...

I've only been using the radar outside the labyrinth so I don't have a huge sample size, but it's worth noting that the shiny Duplicats, Eevees, and even regular Duplicats are one of the main reasons to use the Radar in the first place. In my experience, the chain would randomly stop only when being right on the left-most edge of the grass, or the bottom left corner. I would defeat the Eevee/Duplicat or catch it but the chain would just stop for no reason.

If I were to guess, maybe it's possible that if the Radar does in fact account for where you can/cannot go, maybe it has a chance of spawning the grass right beneath the player and because it's so close it's super likely to break the chain. Or alternatively, the game tries to select the patch of grass the NPC is standing in, but because it's not allowed to do so, just glitches out and stops. That would be my guess anyway since only like 1 patch of grass tends to appear when you're near the very edge.

So, if you read the explanation under that part of the changelog, you'll see that this was related to a bug with Repel in which, when walking toward one of the patches, the game would roll for an encounter and determine if one would happen, and THEN apply the Repel affect. The end result was that the PokeRadar would behave as if a random encounter did in fact happen, thus breaking the chain. So you'd get to a grass patch that was supposed to have been a guaranteed continuation, but then nothing would happen.

The Radar won't generate a grass patch underneath the player or any other NPCs (that was a possibility before but got fixed as well). However, small patches or areas in corners / edges do have the risk of not finding a valid place. The Radar will reroll another time if that happens, and usually will find valid patches that way. Still, it's a possibility that the second attempt will fail, so it's usually best to avoid those areas anyway. Resetting the radar, as @Iron mentioned, is a great trick to keep the chain going.

I will say that I'm VERY glad I read this before trying to go on another Duplicat-hunting run. A 5% chance for ONE 31 IV stat at a 40 chain?!? HA! That's not even remotely CLOSE to worth trying to build up a 40 chain when I'm lucky to get 20! Better to catch every one that I can and just pray to RNJesus. Especially since I've already gotten like 3 2-IV-Stat Duplicats and one with 30 in Speed, Sp DEF, and Sp ATK. without even breaking 30.

Also not quite accurate. If the 5% "improved IV" chance lands, it will take one random IV that is less than 30 and change it to a 31. The key point is that it does this regardless of if there are already 31's there, so not only do you get more 1IV's in general, but it also raises your overall chances of getting 2IV+ mons. Maxing your chain also gives you better shiny odds (bested only by Masuda Method breeding), so there's additional motivation to aim for a max chain.