The Letter Ches is made up of 2 Zayins which are written next to one another and connected together on top. The right Zayin should have no Tagin. All of it's corners should be squared, except for the top right corner, which should be rounded. The left Zayin should have all of its corners squared, and instead of having 3 Tagin like a regular Zayin, it should have 1 Tag coming out of the upper left corner. The connection between the two Zayins is imperative, as if it's broken the letter will look like two Zayins instead of a Ches.