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[[FILE:cheating-cheat-chess-mirror-best-demotivational-posters.jpg|border|right|thumb|link=http://bestdemotivationalposters.com/delusion/|Mirroring <ref>[http://bestdemotivationalposters.com/tag/chess/ Chess Demotivational Posters & Images]</ref>]]
'''Horizontal Mirroring''' mirrors all [[Pieces|pieces]] along the vertical axis between the D- and E-[[Files|File]]. Applicable if both sides have lost their [[Castling rightsRights|castling rights]], horizontal mirroring should result in equal static [[Evaluation|evaluation]] [[Score|score]], but not necessarily equal [[Search|search]] result if [[Pieces|pieces]] and [[Squares|squares]] are traversed in different order. Along with [[Vertical Flipping|vertical flipping]] and/or [[Diagonal Mirroring|diagonal mirroring]], horizontal mirroring is used in pawn-less [[Endgame Tablebases|endgame tablebases]] to restrict a white king to the 10 squares of the a1-d4-d1 triangle of the board.
=Sample Position=
