Okay, but I'm worried I cannot make one rule: Ships have to stay in the sea.
Battleground Chess
You can confine pieces in the Play-Test Applet with the aid of a 'morph' board. When you click the link 'Morphing & Confining' you can indicate inaccessible squares by pressing 'Create Holes' and then the board squares that should be inaccessible. Finally you can assign that 'morph board' to the piece type that you want to confine by clicking on its move in the table.

Wow. Um. I thought normal chess was complicated.
Normal chess complicated?

Can you explain why Battleground Chess has worse reputation than Thick of It and the My mom won't let me play chess series?

Can you explain why Battleground Chess has worse reputation than Thick of It and the My mom won't let me play chess series?
Because thick of it is by ksi
and battleground chess is by you
You can use the Play-Test Applet for creating HTML code for an Interactive Diagram, and then insert that code in a HTML page.