Chess to end the German-speaking dominance in chess; he was undefeated in tournament play for eight years, until 1924. His successor was Russian-French Alexander Alekhine, a strong attacking player who died as the world champion in 1946. He briefly lost the title to Dutch player Max Euwe in 1935 and regained it two years later. Between the world wars, chess was revolutionized by the new theoretical school of so-called hypermodernists like Aron Nimzowitsch and Richard Réti. They advocated controlling the of the board with distant pieces rather than with pawns, thus inviting opponents to occupy the center with pawns, which become
Connected pawns Connected pawns In chess, connected pawns are two or more pawns of the same color on adjacent files, as distinct from isolated pawns. These pawns are instrumental in creating pawn structure because, when diagonally adjacent, like the two rightmost white pawns, they form a pawn chain, a chain where the one behind protects the one in front. When attacking these chains, the weak spot is the backmost pawn, because it is not protected . Connected pawns that are both passed, i.e., without any enemy pawns in front of them on the same file or adjacent files, are referred to as