Sicilian Defence, Katalymov Variation GM Christian Bauer, with which he managed to draw a game in 2005 against currently top-ranked GM Magnus Carlsen. It has also been used by top players such as Gata Kamsky and Soviet GM Lev Psakhis. The opening is named after Soviet IM Boris Katalymov (1932–2013). Bibliography Sicilian Defence, Katalymov Variation In chess, the Katalymov Variation (also spelled Katalimov) is a less popular line of the Sicilian Defence that begins with the moves: The Katalymov is considered inferior since it commits Black to a plan with ...b6 rather than more aggressive Sicilian defences incorporating b7–b5. Black must protect the b5-square,
Ruy Pérez Ponce de León was there given eventual lordship over the city after its conquest from the Moors. Ruy died in 1295, two days after being injured in the Battle of Iznalloz against the forces of the Kingdom of Granada under Muhammad II, in a small town of the same name north of Granada. Ruy Pérez Ponce de León Ruy Pérez Ponce de León or Rodrigo Pérez Ponce de León (b. ? - d. 1295) was a Spanish noble of the House of Ponce de León, in the service of the Kingdom of Castile. He was the 15th Grand Master of the Order of