There's still a few problems. The betza parser incorrectly interperets L as (2,3) and J as (1,3), when it should be the other way around. Second, there's something wrong with my diagram here, because the Knight's initial moves (imafN) aren't darkened. Third, your Four Board Chess and Golden Age Chess don't give en passant rights to the pawn. And finally, I would suggest adding Betza's "o" for cylindrical pieces, in addition to "oo" for toroidal ones.
There's still a few problems. The betza parser incorrectly interperets L as (2,3) and J as (1,3), when it should be the other way around. Second, there's something wrong with my diagram here, because the Knight's initial moves (imafN) aren't darkened. Third, your Four Board Chess and Golden Age Chess don't give en passant rights to the pawn. And finally, I would suggest adding Betza's "o" for cylindrical pieces, in addition to "oo" for toroidal ones.