Can now move pieces

Sources/Engine/Pieces/Bishop.swift

@@ -12,20 +12,8 @@ final class Bishop: Piece, DiagonalMoves {
 		return pseudoLegalPositions.filter { isLegal(on: $0) }
 	}
 
-	override func move(to dst: Square.Position) {
-	}
-
 	override func isLegal(on pos: Square.Position) -> Bool {
-		if let board = board, let s = board[pos] {
-			if let p = s.piece {
-				if p.color == color { return false }
-				if p.kind == .King {
-					delegate?.notify(.kingInCheck(self))
-					return false
-				}
-			}
-		}
-		return true
+		super.isLegal(on: pos)
 	}
 
 	init(with color: Color, on position: Square.Position) {