Adverb
Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.
Source: Webster's dictionaryA gold general (金) moves one square orthogonally, or one square diagonally forward, giving it six possible destinations. Source: Internet
A horse moves and captures one point orthogonally and then one point diagonally away from its former position, a move which is traditionally described as being like the character 日 Rì. Source: Internet
Cannons move like chariots, any distance orthogonally without jumping, but can only capture by jumping a single piece, friend or foe, along the path of attack. Source: Internet
Due to the conformal property of the stereographic projection, the curves intersect each other orthogonally (in the yellow points) as in 4D. Source: Internet
The chariot moves and captures any distance orthogonally, but may not jump over intervening pieces. Source: Internet
Because they cannot move orthogonally, the players' unpromoted bishops can reach only half the squares of the board, unless one is captured and then dropped. Source: Internet