Select every other panel on a Diamond grid

[Arvind_Roy]

Hi, Is there a way to select every other panel from diamond panel as I have shown in my sketch with a green dot? Please find script attached where I have tried to partition, flip matrix and cull list, but it doesn’t work.
Test.gh (11.9 KB)

[inno]

this can be one way

Test_inno.gh (13.3 KB)