Talk:Holiday Crystal Sale December 20 2012/@comment-5116140-20121226151228

OK, this is weird, my villagers [on Amazon]  are quite frugal so we did n o t participate in any of the 1219a-f challenges. The wierd thing is that yesterday, we saw both  iap1225b  and  iap1225d  challenges appear as icons on the left of the screen, each offering a reward of 3450 crystals for purchasing the mountain. The price was still at 50% off as well. So a single purchase of $49.99 could trigger both rewards!

Can this be explained by the predicate conditions above? I can't quite work out the logic, but was very pleased with the surprising result. There is some kind of mistake somewhere in that hornet's nest of predicate logic.