Ruy Lopez, Exchange Variation Qf6 7.Qd3. There are two "ECO" classifications for the Exchange Variation. Bibliography Ruy Lopez, Exchange Variation The Exchange Variation of the Ruy Lopez is a chess opening that begins with the moves: Black may recapture on c6 with either pawn; although 4...bxc6 is playable, 4...dxc6 is almost always chosen at master level. Black has gained the at the cost of a weakened pawn structure, due to his doubled pawns on c6 and c7. White aims to reach an endgame in which he has the superior pawn structure, which may become an important factor. Thus, Black is compelled to strive for
Ruy Fernández de Fuenmayor Ribas, Contador of the Royal Treasury. Citations Sources Ruy Fernández de Fuenmayor Ruy Fernández de Fuenmayor (Santo Domingo, 1603 - Venezuela,1651) was a Spanish soldier who was governor of Venezuela Province between 1637 and 1644. Fuenmayor was born in 1603, the son of Fernández de Fuenmayor and Juana Figueroa. He served in various positions in Spain, Puerto Rico and Hispaniola. He was General of the galleys in Hispaniola, and in 1635 led an attack on buccaneers who had settled on Tortuga, expelling them from the island for several years. In this raid, he led 250 Spanish soldiers. The Governor of