This checkmate occurs from a corner square with a Rook or a Queen, defended and protected by a pawn or a Bishop in the long diagonal which includes the corner square. The opposing King is checkmated at the square in one of the back ranks in the third file from the wing file (a or h file) in which the corner square is located where the Rook or Queen is positioned for checkmating.
[Game examples, sources credit:
with pawn: http://www.chesscity.com/ANALYSIS/Beginner/checkmate_patterns.htm
with Bishop: http://www.forthnet.gr/chess/anders.html]
Anderssen's Mate with pawn Barebones Mating Position
DIAGRAM ADM-1A
Anderssen's Mate with Bishop Barebones Mating Position
DIAGRAM ADM-1B
Anderssen's Mate with pawn-Game Example DIAGRAM ADM-1C
