if your the Devil and your playing poker with God

this also makes you wonder how God can give people "free will" when he already knows what they are going to do before he ever makes them

so the question is, can god "roll the dice" ?

can he make himself not know something ?

but then that would go against the "all knowing" thing

Normally, God would know. But he was playing against the Devil. So their powers didn't work against each other. That's why God says "How are we going to trick each other?"