Stalemate is a frequent theme in endgame studies and other chess compositions. These positions can be geared towards positional, tactical or endgame play. White has a better pawn structure and prospects of a better endgame. Another way tablebases cook studies is a change in the evaluation of an endgame. Some of these have been aided by analysis from endgame tablebases. Reciprocal zugzwang is possible, but very rare and usually seen in endgame compositions. The Cochrane Defense is the most popular among grandmasters for this endgame . Large pages are disabled but access to various endgame tablebases is permitted. Kramnik is renowned for his endgame skills. This move was the first mistake made in the 7-piece endgame. Initiative is more important in this endgame than any other. Tablebases have enhanced competitive play and facilitated the composition of endgame studies. In the end he had to settle for a losing endgame down an exchange. Andy Soltis says that this is "perhaps Fischer's most famous endgame". Karjakin eventually decided to trade queens and enter an inferior endgame.