Fig. 388 illustrates a six-piece puzzle joint, similar in some respects to Fig. 369 , but very much simpler. Both a back and front view of the piece D is shown for clearness of illustration. The method of assembling the pieces is as follows: Hold piece B upright, and fit piece D across; at the same time note that the smallxmarks are opposite each other. Take piece E and, holding it as shown, slideit up the piece B (see arrow) until E engages D and the smallomarks are opposite each other. Piece C is now fitted behind D, and then piece F will slide in position and push downwards. The key-piece A is now put in position, and the puzzle is completed.