There is a common ground between the two players. You might call it second guessing your opponent. But one's own mind is safe from intrusion. It is when you move into the common ground, that's when your opponent can unleash great mind power, creating a turmoil that can trap the unwary, the unprepared. One of great energy, rather chaotic, like shortly before dawn.
Some players freak out and commit dumb mistakes.
And this is my only explanation. The mind is more than the intellect, more than the combination-making imagination. Stepping into the common ground reminds me of the fool card in the tarot deck. One stands on the edge of a precipice. Below lies the abyss.