why is this not checkmate??

Zeerooth@lemmy.antemeridiem.xyz to AnarchyChess@sopuli.xyz – 37 points –
15

Wait doesn’t white lose here? Black bishop takes white bishop, white king is in checkmate?

So it's basically the "call an ambulance – but not for me" meme

Black Bishop (very bottom right corner) takes White Bishop?

If you look carefully at the very corner of the screen you’ll see black’s only legal move