What is Epaulette Mate?
Checkmate Patterns : Epaulette Mate Explained
Epaulette Mate
The king, flanked by its own pieces on adjacent squares, is checkmated from the front.
The Epaulette Mate is a checkmate pattern in which the king is trapped on the edge of the board with its own pieces on the adjacent squares on either side—resembling epaulettes, the decorative shoulder ornaments on a military uniform.
The black king is trapped between two rooks (his epaulettes) Board is interactive - move a piece
The attacking queen (or other piece) delivers check from the front, covering all advance squares. The king cannot move sideways (blocked by its own pieces) and cannot advance.