Ruy Lopez Ajedrez", written in 1561. Although it bears his name, this particular opening was included in the Göttingen manuscript, which dates from c. 1490. However, popular use of the Ruy Lopez opening did not develop until the mid-19th century, when Carl Jaenisch, a Russian theoretician, "rediscovered" its potential. The opening remains the most commonly used amongst the open games in master play; it has been adopted by almost all players during their careers, many of whom have played it with both colours. Due to the difficulty for Black in achieving equality, a common nickname for the opening is "The Spanish Torture".
Sicilian language word has come to us directly from Catalan (as opposed to Provençal or Spanish), the following are likely to be such examples: By the time the crowns of Castille and Aragon were united in the late 15th century, the Italianisation of written Sicilian in the parliamentary and court records had commenced. By 1543 this process was virtually complete, with the Tuscan dialect of Italian becoming the "lingua franca" of the Italian peninsula and supplanting written Sicilian. Spanish rule had hastened this process in two important ways: Spanish rule lasted over three centuries (not counting the Aragonese and Bourbon periods on