H7: The four displacements (Versetzen)

"Mark, you have heard before that there are Four Guards. So you shall now also know the Four Pre-emptings that break the same Four Guards. Also hear that the Pre-emptings are nothing more than breaking with four hews.

Mark, the first hew is the Crooked-hew, which breaks the guard that is called the Ox.

Mark, the second hew, that is, the Thwart-hew, which breaks the guard From the Day.

Mark, the third hew, that is, the Squinter, which breaks the guard that is called the Plow.

Mark, the fourth hew, that is, the Parter, which breaks the guard that is called the Fool.

And you shall find how you shall break the four guards with the hews before, in the descriptions of the same hews."

In essence, these four displacements act as a sort of "paper,rock,scissors" to the four guards, with particular strikes defeating specific guards.  While Zornhau is not specifically described as one of the Versetzen, with proper use it displaces many strikes coming from the Vier Lieger.