Rook:

Step 1:

Diagonal 	&& Invalidate
Space occupied 	&& Invalidate

Step 2:

Same direction 	|| Invalidate
Space occupied && Invalidate
Repeat 2

Knight:

Step 1:

Diagonal && Invalidate

Step 2:

Diagonal && Invalidate
Same direction && Invalidate

Step 3:

Same direction || Invalidate
Space occupied && Invalidate

Bishop:

Step 1:

Diagonal || Invalidate
Space occupied && Invalidate

Step 2:

Same direction || Invalidate
Space occupied && Invalidate
Repeat 2

Queen:

Step 1:

Space occupied && Invalidate

Step 2:

Same direction || Invalidate
Repeat 2

King:

Step 1:

Space occupied && Invalidate

Pawn:

Step 1:

Forward || Invalidate
Space occupied && Invalidate

Step 1:

Forward || Invalidate

Step 2:

90 || Invalidate
EnemyOccupied || Invalidate