If this is correct, it suggests that the Göttingen manuscript is Lucena's later and more mature work. ↑ Dr. Fritz Clemens Görschen (1911–1981) writes in Schach Echo (1975) that King Alfonso V of Portugal had the manuscript when he visited France in the winter of 1474–5 and that it had been written in 1471 (Hooper & Whyld 1996, p. 156), although Eales 1985, p. 74, brands this as speculation. ↑ The text for the first sample game begins: "Thus your lordship plays the king's pawn to the fourth square from the king's place, and if the opponent does the same, play the king's knight to the third square of the king's bishop, and if he guards the pawn with the pawn of the king's bishop, take his pawn with the knight…".