Deadlock stalemate

What is the game result when one side cannot move at all, even considering that moving into check is legal? For example, in this position, Black to move has no legal moves whatsoever. Black cannot pass, yet can't move at all, let alone let their king be captured even if they wanted to.

Stalemate. It's harder to achieve stalemate in Fog of War chess given that moving into check is legal, but still possible, as you've shown with an example here.

I've played over 8,000 games of Fog of War chess and never once have had a stalemate. They're very rare. Draws by repetition happen somewhat commonly though.

I’m with LTF, it is impossible to truly stalemate, but you can still draw. I have even found a game that the 50 move rule was implemented

We should still update the documentation then, because it only says stalemate isn't possible (at all). It should say it's much rarer but is a draw.