disable sidebar in pages only ?

Sure, take a look here: https://codex.www.ads-software.com/Conditional_Tags

thanks Yosemite.

it is obvious.

but what is the excat condition ?

if page displayed = no sidebar

what is the code ?

ok

i disabled the sidebar from the pages

but i need the pages without narrowcolumn limitation

it is 450 px width. (style.css)

i wnat ti increase it to 600.

but this affects not only the bage but all the other pages in the blog including the main page (index)

any solution ?

Just create a new template.

https://codex.www.ads-software.com/Stepping_Into_Templates

new template …

creative solution.