Ruy Lopez, Exchange Variation 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 an active position, generally avoiding piece exchanges. The variation was introduced into
Tactical role-playing game planned MMORPG that would have featured tactical combat, had development not been cancelled in 2006. "Gunrox" (2008), "Poxnora" (2006) and "Wakfu" (2012) are some other recent examples. Many tactical RPGs can be both extremely time-consuming and extremely difficult. Hence, the appeal of most tactical RPGs is to the hardcore, not casual, computer and video game player. Traditionally, tactical RPGs have been quite popular in Japan but have not enjoyed the same degree of success in North America and elsewhere. However, the audience for Japanese tactical RPGs has grown substantially in the West since the mid-90s, with PS1 and PS2 titles