Diagonal

Cut the cloth in a diagonal direction.

A diagonal matrix is positive semidefinite if and only if all of its elements are nonnegative.

This line is diagonal.

Just when she said "Ooh, what a beautiful star," a star fell across the sky and a blue light quickly fainted in a diagonal trajectory, dragging behind a faint tail.

Cut the bread into diagonal slices the width of a finger.

White: rook on a1, pawn on b6, king on c8. Black: pawns on a7 and b7, king on a8, bishop on b8. White puts the opponent in zugzwang by playing the rook to a6, after which Black has only two options: take the rook on a6 or move his bishop to any other square on the diagonal b8-h2. In the first case, White advances his pawn from b6 to b7 and checkmates. In the second situation, the white rook takes the black pawn on a7, with the same result.

Ziri asked Yazid if he could borrow his diagonal pliers.

You should never leave both your king and queen on an open diagonal that can be controlled by the enemy bishop.

A skewer is called a tactical move whereby two pieces that are in the same line (row, column or diagonal) are simultaneously attacked, so that the first, when moving, dodging the attack, allows the capture of the other one.

Two or more checkers together, on the same diagonal, cannot be captured.