The Czech Pirc

 What are your thoughts on the Czech Pirc 1) e4 d6 2) d4 Nf6 3) Nc3 c6 and are there any books written on it ? I can't seam to find any.

You should have posted this in the opening section of the forum. It's perfectly fine but somewhat uncommon. I don't know if there is a book specifically on the Czech but you should be able to find parts of it in general books about the Pirc.

I'm not going to claim that it is refuted, but white should be getting a large advantage if he plays correctly. Certainly inferior to other, more reputable defenses, but of course is playable.

1...d6 Move by Move by Cyrus Lakdawala covers the Czech defense and the related Pribyl defense (among other lines). His reccomendations are 

1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.f4 Qa5

and

1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3 Bg4

Czech speaks for itself. Acutally there is a new German Chessable course on the Czech available. https://www.chessable.com/die-tschechische-verteidigung-rattenscharf-modernisiert/course/235452/ also Short&Sweet.

it often has the flavor of a quirky philidor . But if white plays early f4 and releases tension at the right time, he is just much better. Black has decent practical chances because they are pitfalls white must avoid between the exposed kingside, an exposed queen if qxd4 and threat of losing bishop pair with moves like nc5 (Vs d3 bishop) and ng4 if bishop goes to e3. But some minor prep beforehand usually leaves white much better.

i would just play some line of the philidor if you like the formation. the hanham philidor through the pirc move order is prob up your alley.

Czech out: The Rebellious Czech Defense | Chessable

The Rebellious Czech Defense | Chessable