The "logical problem of evil" is one kind of the "problem of evil." It is claimed that there is a logical inconsistency between belief in the existence of an omniscient, omnipotent, and wholly good God and belief in the existence of evil. Alvin Plantinga argued by his "free will defense" that they are consistent. In this paper I present his argument. Then three objections against his argument are mentioned. They are based on compatibilism, God's omnipotence, and God's knowledge of counterfactuals of freedom. Plantinga's responses to these come next. They are based on a counterexample, Leibniz's lapse, and transworld depravity. It is nearly accepted by all parties that Plantinga's defense is successful. Now the problem is the evidential one. For this problem to be solved, there must be a theodicy. And Plantinga gives one. But this is not successful at all. Muslims have to pay attention to this neglected area.
