Mirror Go

Go board, 9 by 9. Moves: 1 black E5; 2 white E6; 3 black E4; 4 white F6; 5 black D4; 6 white D6; 7 black F4; 8 white F5; 9 black D5; 10 white G4; 11 black C6; 12 white F3; 13 black D7; 14 white E3; 15 black E7; 16 white C5; 17 black G5; 18 white C4; 19 black G6; 20 white D3.
A mirrored game of Go. After the first move, black plays a rotated version of white's move. White is able to surround and capture a section of black's pieces, breaking the symmetry.

Mirror Go is an opening strategy in the board game Go. In Mirror Go, one player plays moves that are diagonally opposite those of this opponent, making positions that have a rotational symmetry through 180° about the central 10-10 point (tengen in Japanese). The Japanese term for Mirror Go is manego.