Swallow's tail mate also known as the Guéridon mate

Here is another checkmate in which the King’s own forces block its escape.

SteveB

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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,16,0,0,0,0,0,0,0,160,0,0,0,0,0,0,136,0,136,0,0,0,0,0,0,0,0,0,0||Here is another checkmate in which the King’s own forces block its escape.

Swallow's tail mate also known as the Guéridon mate is a common method of checkmating. It works by attacking the enemy king with a queen that is protected by a pawn other piece. The enemy king's own forces (in this example, rooks) block its means of escape||0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,16,0,0,0,0,0,0,0,0,0,0,0,160,0,0,0,0,144,0,129,0,132,0,0,0,0,0,0,0,0,0,0|4,4,0,0,green_f.png,0,6,5,0,0,blue_f.png,0,6,3,0,0,blue_f.png,0|What makes a Gueridon’s checkmate pattern possible?

1. The enemy king is exposed in the middle of the board.
2. The important escape squares are occupied the king's own forces, blue squares.
3. The attacking queen has cover in front of the enemy king, green square.
4. The enemy pieces are not in proper defensive positions.  Here the black queen can not cover the e5 (green) square.||0,4,32,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,160,0,0,0,144,0,0,129,0,129,0,0,0,0,0,0,0,0,0|4,5,0,0,green_f.png,0,6,4,4,0,green_overlay.png,0,6,6,4,0,green_overlay.png,0|Why call it the swallow's tail mate?  Because you are basically looking for this V pattern behind the enemy king.|5,5,4,6,green,5,5,6,6,green|0,4,32,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,136,0,0,0,0,0,0,0,160,0,0,0,144,0,0,129,0,129,0,0,0,0,0,0,0,0,0|4,5,0,0,x_red.png,0,4,5,4,0,red_overlay.png,0|Another view of the matting pattern.  The black king is not as well protected as one might think.  With whites crossing lines of fire the rook is not an issue.|1,0,5,4,green,7,2,5,4,green|0,0,0,130,0,0,0,0,0,0,0,136,0,0,0,144,1,0,0,0,0,0,1,0,0,0,0,0,0,1,32,0,0,129,0,0,0,0,0,0,16,0,0,0,0,0,129,0,0,0,129,0,0,129,160,129,0,0,0,0,0,0,0,0||This a from an actual game of mine, it looks like the Swallow's tail mate turned 45 degrees.  Do you see it?||0,0,0,130,0,0,0,0,0,0,0,136,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,32,0,0,129,0,0,0,0,0,144,16,0,0,0,0,0,129,0,0,0,129,0,0,129,160,129,0,0,0,0,0,0,0,0|1,7,1,0,aimage.png,B,4,7,1,0,blank.png,B,3,6,1,0,kingattack.png,0,3,5,0,0,blue_f.png,0,2,6,0,0,blue_f.png,0,4,7,0,0,green_f.png,0|And checkmate!

This is another case where a kings own pieces can be used against him.|7,1,7,4,green|8,0,0,0,0,8,0,0,1,4,0,32,0,0,0,1,2,1,0,130,1,1,1,0,0,0,1,0,132,129,0,0,129,0,129,1,0,129,0,0,0,0,0,129,0,0,16,132,0,129,0,0,160,0,0,0,0,136,0,144,0,136,0,0||Here is another one from an actual game.||8,0,0,0,0,8,0,0,1,4,0,32,0,0,0,1,2,1,0,130,1,1,1,0,0,0,1,0,132,129,0,0,129,0,129,1,0,129,0,0,0,0,0,129,16,0,0,132,0,129,0,0,160,0,0,0,0,136,0,144,0,136,0,0|6,4,1,0,kingattack.png,0,7,3,0,0,blue_f.png,0,7,5,0,0,blue_f.png,0,5,6,9,0,blue_overlay.png,0,5,4,9,0,blue_overlay.png,0,5,6,13,0,aimage.png,0,5,4,0,0,green_f.png,0|And checkmate!|6,5,4,5,green|

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