This is not checkmate. How?

Put the thing that prevents checkmate in the comments

there’s a queen on z348

Black forgot to pay rent for the g4 square and as a result, the tile disintegrated and the queen fell into the abyss

someone else is playing on another board in an endgame and somehow the rook of that game is on the g-file too, able to capture the queen

We're playing double move Chess and we can capture the king.

The g4 square belongs to the white king and we are playing Monopoly chess, so the queen goes bankrupt and is out of the game

The queen blew up killing both the white king and black king

so it is a draw

black king plays chess with white king and loses, so they decide to call it a draw (but on the chessboard they play chess the story can continue)

The White King has a bottle of bleach. He splashes it on the queen, turning it white.

the king can jump off the board and swim to another board