Back Rank Mate

A back-rank checkmate (also known as the corridor mate) is a checkmate delivered by a rook or queen along a back rank.

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0,0,0,0,0,0,32,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,129,0,0,0,0,0,129,129,0,136,0,0,0,0,0,160,0|7,2,0,0,blue_f.png,0,7,0,4,0,red_overlay.png,0,0,0,4,0,red_overlay.png,0,6,7,0,0,green_f.png,0|A back-rank checkmate (also known as the corridor mate) is a checkmate delivered by a rook or queen along a back rank.

Here black is prepared and has an escape rout if white's queen should attack on c8 by moving h6 opening up the h7 square, this is also called a flight square (or luft).

White made no such preparations and is vulnerable to black's rook.|0,7,0,0,red,7,2,2,7,blue|0,0,0,0,0,0,32,0,0,0,0,0,0,1,1,1,0,0,0,0,2,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,136,0,0,132,0,0,0,0,0,0,0,0,0,129,129,129,0,0,0,0,0,0,160,0|2,4,4,0,green_overlay.png,0,0,5,4,0,green_overlay.png,0,5,3,4,0,green_overlay.png,0,7,5,4,0,green_overlay.png,0|A friendly piece can offer some protection by being able to block the attack.  Here each blocker would have the defense of  the king.

However if you see yourself in jeopardy of a back rank attack opening up a flight square is the more permanent solution.|3,5,5,7,green,4,2,5,0,green|0,0,0,0,32,0,0,0,1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,132,0,0,0,0,160,0,0,0,129,0,0,0,0,129,8,0,0,0,0,136,0,0,0,0|0,3,9,0,red_overlay.png,0|From an actual game, a more subtle form of the back rank mate.  White's f2 pawn is preventing the king's escape from black's rook.  The black bishop is covering the rook from the white king.|3,7,3,0,red,7,4,3,0,green|

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