Cai, iba pre info:
nedavno som to riesil a nasiel som na to plugin "List category posts".
Na stranku kde chces zobrazit posty vlozis tento kod a parametre si upravis podla potreby:
[catlist template=MyPosts orderby=date order=DESC numberposts=15 date=yes dateformat="j.n.Y G:i" excerpt=yes]

Popis:
List Category Posts allows you to list posts from a category into a post/page using the [catlist] shortcode. This shortcode accepts a category name or id, the order in which you want the posts to display, and the number of posts to display. You can use [catlist] as many times as needed with different arguments. Usage: [catlist argument1=value1 argument2=value2].

Btw podobny plugin pre stranky je "Subpage View":
A plugin for showing subpages on a given page. Insert into MCE by using [subpage-view attributes] an example [subpage-view depth="1"]. View WordPress Codex for shortcode help. A CodeWork plugin for WordPress.