Same-colored-bishops annotation symbol

⮼ is Unicode character U+2BBC. U+2BBC is its code point, the stable number identifying the character in Unicode, and OVERLAPPING BLACK SQUARES is its standardized name. Its documented chess use is bishops of the same color. Older tables and programs may instead show ⊶. The phrase refers to the color of the squares each bishop travels on, not to whether the pieces belong to White or Black.

A bishop that moves on light squares can never switch to dark squares, and vice versa. When opposing bishops operate on the same square color, they can directly contest many of the same diagonals and targets. The symbol classifies that relationship, but it does not say that one bishop is better or that the position is won.

The contrasting case uses the opposite-colored-bishops annotation symbol. That distinction changes which squares the bishops can fight over, but its practical effect depends on the pawns, kings, and other pieces.