The game is quite common around the country, you find it set up by its organizers in places with pedestrial traffic, it is run mainly by our hausa brothers (though other tribes are not exempted). The rules are simple enough: 3 playing cards on the table, the handler reueals to you the color underneath the cards: two red and one black, and tells you "no choose red, red na danger, if u choose black you don chop". He overturns the cards and proceeds to rearange them: swapping their positions repeatedly but slowly enough that a kid can easily keep track of the winning black card. He then asks you to pick.choosing Red means u lose ur money, while black means ur money is doubled(they even encourage you stake up to 10k!!). Easy money right? Wrong. D game is practically unwinnable. If you pick 16 times, it would all be red. As a scientist am really curious how this is posible

Sleight of hands.