How to make a thermopylae style variant?

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Avatar of Tsar_TheBFDIFan2763

I tried trapping a zombie rook (the zombie is a f checker) in a cage with a royal green pawn that has 50 lives, but somehow when red moves green gets checkmated. I want to replicate thermopylae chess. Can somebody please help?

Avatar of A_Yim_Sandwich

dam bro

Avatar of Tsar_TheBFDIFan2763

How

Avatar of Tsar_TheBFDIFan2763

Can anyone help