Valencia lectures part 1: King Alfonso's Book of Games
During last week's Valencia, cradle of modern chess festival, the audience could not only enjoy the Kasparov-Karpov match, but also a series of lectures on the history of chess, with special attention to Valencia's role in it. As promised, we'll now return in more detail to the lectures that were most interesting in our opinion. The first is about a medieval manuscript, the amazing Book of Games by Alfonso the Wise.Some time ago, I wrote an article about order and chaos in chess. I tried to elaborate on the question whether chess, like the universe, was ultimately governed by rules or by chaos. I thought my analogy between chess and the universe was a pretty smart one, but during the Valencia lecture of Dr. Ulrich Schaedler, director of the Musée Suisse du Jeu in Switzerland, on the Spanish manuscript Libro de los Juegos (Book of Games), I found out this analogy was anything but new. In fact, it was already old in the 13th century, when the Book of Games was written.Dr. Schaedler's lecture was good not only because of its interesting contents, but because, contrary to some other lectures given at the Valencia symposium, it was beautifully and clearly illustrated and contained many examples that were appealing not only to people who already knew a lot about chess history; it could also easily be enjoyed by people who came here with no knowledge at all about what has happened in chess before, say, the first official World Champion. Schaedler started his lecture with a question that everyone must have asked himself from time to time : are the things around us govered by rationality - by rules - or by chaos - i.e. chance? The Book of Games was written in order to answer this question.
All lectures were given in the same auditorium where Karpov and Kasparov played

King Alfonso 'el Sabio' dictating the manuscript
I am inclined to believe that they relied at least partially on their own experience: during the 13th century a new rationalist movement revolutionized scientific work. Had authors previously completely referred to ancient authorities such as Aristotle, Boëthius and Augustine, they now started to trust their own senses.However, there is one literary source, which offers so many parallels to the Book of Games that we may assume that it served as a possible source of inspiration: the chapter about games in the Latin epic called De Vetula, written in France between 1222 and 1266/68. Not only does the author pretend to be Ovidius, the Roman poet highly esteemed by Alfonso. But in the relevant chapter the author talks about practically the same games (Chess, dice, Backgammon, Alquerque, Merels with and without dice) and he applies a similar structure. Moreover it is in De Vetula that for the first time the possible outcomes and probabilities of playing with three dice are analysed, upon which most of Alfonso’s rules of dice games are based.And it wasn't only the (unknown) authors' own experience that was written down in the manuscript. According to Schaedler, from time to time the personal experience of King Alfonso, too, creeps into the text, for instance in the following lively description (fol. 1v) of board and table games, which, incidentally, gives us a very interesting perspective on medieval court life, where games evidently played an important role:
Those games are played sitting and each and every day, by night and by day, so that women too, who would not ride and are confined to the house, can play them. And also old and weak men or those, who prefer to amuse themselves in seclusion, not to cause any trouble or pain. Or all those, who find themselves under someone else’s power, captured or imprisoned for example, or seafarers or generally all those who have a hard time, because they cannot ride or go hunting nor go anywhere and therefore necessarily have to stay at home (fol. 1v), all those look for all kinds of games which would amuse and comfort them so that they would not be bored to death.(Schaedler notes that Alfonoso himself lived in exile during the last years of his life, and so the above fragment may well have been a "personal legacy" of the king.)
An old man playing chess with a courtisane

Teaching chess (elementary endgames it seems) to children
The highly sophisticated structure of the book of games is in my view a didactic masterpiece. [Alfonso] starts with the well known discussion of the fortuna-sapientia problem and describes the games accordingly (chess = ratio/thesis, dice = chance/antithesis, tables [i.e. backgammon, AWM] = best of both/synthesis). But then he surpasses the dialectic theory of that legendary Indian philosopher, and leads us to a new level of insight. This new level is characterized by the connection between microcosmos and macrocosmos, which had been demonstrated by the 'sabios antiguos'.For me, this synthesis of chess and dice (represented in Alfonso's book as the game of backgammon) definitely has an Eastern aspect. It reminds me of the equally ambitious modern-day book Gödel, Escher, Bach in which the author, Douglas Hofstadter, talks at length not only about science but also about Zen and Buddhism. But King Alfonso doesn't stop there. After all, we're talking about the Middle Ages, so the last step of his dialectic course is a familiar one: Christian truth.To scientifically 'prove' the superiority of Christianity, Alfonso introduced the so-called Astrological Chess. He considered this the most superior of all games, for this 'game' describes the planetary movement (the zodiac) and various deities according to specific rules. Reason leading to faith! An ingenious retorical trick indeed.

The best of both worlds: astrological chess