Oh, dear. My bad. I actually simplified the rule slightly
veeeeery early on (there had been maaaaybe one or two koan posts at the time I did it?), thinking that no koans were out that would have been affected by the change, buuuut somehow I missed LOOPING, which is, indeed, under the changes, white, and, embarrassingly, was the original black koan I gave.
More details (I've marked with a spoiler but I don't believe this should give any new relevant information that wasn't divulged in earlier hints)
In some of the earlier hints
you may recall this example:
Pretend the letters that matter are the first, third, and fifth letters of a koan (this isn't true of the rule, but we'll use it for the sake of example).
Also pretend that the koan AxBxC is white (it wouldn't be, but again, for the sake of example...), where "x" represents any letter. The koans AxCxB, BxAxC, BxCxA, CxAxB, and CxBxA would also be white.
Generally speaking, the three important letters must be in a specific location in the koan, but may be in any order within those positions.
Originally I had it so the letters had to be in the same order as they appeared in PINEAPPLE, which is probably why I chose LOOPING as the first black koan - everything the rule asked for is in it, but it's not in the right order. Upon further thought, though, I thought it was going to be too difficult, so I decided that it would be fine as long as it was there... and didn't double check the lists for affected koans, because there were only like no more then 10 koans at that time.
Sorry about that.
I checked for other erroneously marked koans and didn't find any, but due to sheer numbers, it wouldn't surprise me if there's at least one hiding around here.
I DID find two black koans that should have been left off of the abridged list, but I'll fix that next time I post a koan list instead of editing this one.
Next time I host, I'm definitely going with an easier rule.
White KoansAAAAXAAAA BACEIBBDE KILLERAPPLE PEARN
AAACA BACEIDFGO LAAPING PECAH
AAACH BEACH LEACH PINEAPPEE
AAAXAAA CAANA LEMON PINEAPPLE
AACAH CHEAP LOOMING PINEEPPLE
AAPAA CODES LOOPING PINEOPPLE
AAXAA ELPPAENIP LOPIG POLIC
AAXAXAAXA FORUM LOPOING PONEAPPLE
AAXAXAXAA GEART NINEAPPLE POSTMODERNISM
ADENINE GREAG OOPIN POUTT
AEACH GREAT OOXOO PPLEAPINE
AECAH HACEP PALIC REACH
ANTHROPOGENICALLY HCAEP PANEAPPLE TAERG
AOXAO IEACH PCEAH XAXAX
AOXOA KAPII PEACE
AXAAXAAXA KAPUU PEACH
AXAXAXA KEBAB PEARL Black KoansA AXXXA LEMMINGOLOGICAL PONTT
AAAAA BBBBBBBBB LEMMM PPAPP
AAAAAAAAA BCDFG LOOPING PPEPP
AAAAH CCCAC LPPNP PPPPP
AAAXXXAAA CCCCA MAAAT PPPPPAAAA
ABCDE CHIPS MANGO QQQQQ
ACCOMMODATIONISTS COMPUTERS MMMMM QUEUING
ACEHP EEEEE NANNA STRUG
AEAAH ELPPA ONMLE TANGO
AEIOU EPCAH OOOOO TRIBE
AEIOUXXXXYYYY EPCHA PINEBPPLE XAAAX
AEIOUXXXXYYYYZZZZ GGGAA PINEXPPLE XXAXX
APE GGGAE PINEYPPLE XXXXX
APPLE HHHHH PIZZA
APPLEPINE IIIII PNPPL
ATEGR LEMMING POMEGRANATE