Arrangement comprising a wall with an opening, a leaf moveable relative to the wall, and a concealed hinge (3, 12, 18, 24, 25), which serves to guide movement of the leaf with respect to the wall, wherein the hinge (3, 12, 18, 24, 25) is a wall-side hinge housing (4, 14), a leaf-side hinge housing (5, 15), comprises a wall-side main lever and a leaf-side main lever, wherein - the pivot axis of the wall-side main lever is located in relation to the wall in the wall-side hinge housing (4, 14) in the vicinity of its opening surface and of its housing wall on the wall opening side, and - the pivot axis of the leaf-side main lever is located in relation to the leaf in the leaf-side hinge housing (5, 15) in the vicinity of its opening surface and of its leaf-opening housing wall, and - the movements of the translationally moveable ends of the main levers (7, 8) during the opening movement of the leaf run from the inside of the respective hinge housing (4, 5, 14, 15) closer to its opening surface, and - the two main levers (7, 8) are held together in a pivotable manner on a pivot axis, and - both main levers (7, 8) are curved in the longitudinal region which extends between the respective pivot axis (11, 16) anchored to a hinge housing (4, 14; 5, 15) and the pivot axis with the second main lever (8, 7), wherein, when the leaf is closed, the concave side of the curvature faces the opening side of the respective hinge housing (4, 14; 5, 15), and - all four of those axle bolts by means of which the two main levers (7, 8) are held directly on one of the hinge housings (4, 14; 5, 15) in a moveable manner extend continuously from the upper housing surface to the lower housing surface in the respective hinge housing (4, 14; 5, 15), and, - when the leaf is closed, the pivot axis - which is an infinitely thin straight line - of the two main levers (7, 8) is positioned in relation to each other not further away from the wall closing side of the hinge (3, 12, 18, 24, 25) than the diameter dimension of one of those bearing bolts on which a main lever (7, 8) is mounted exclusively pivoting on a hinge housing (4, 5; 5, 15), and - when the leaf of at least one of the two main levers (7, 8) is closed the translationally moveable lever end is located in the vicinity of the leaf or wall closing side of the respective hinge housing (4, 14) in such a way that a straight connecting line between the pivot axis of the two main levers (7, 8) to each other and the bearing axis at this translationally moveable lever end is not inclined more than 5 angular degrees with respect to the direction of the wall, characterized in that the translationally moveable lever end is connected to an auxiliary lever by one of the two main levers in a pivoting manner, the second lever end of which is connected to one of the hinge housings, wherein the pivot bearing on the hinge housing is located directly on its wall opening side or leaf opening side, and when the leaf is closed, the pivot bearing between the main lever and the auxiliary lever is located directly on the wall closing side or leaf closing side of the hinge housing and the straight connecting line between the pivot axes located at the two ends of the auxiliary lever is normally aligned with the plane of the wall. - the pivot axis of the wall-side main lever is located in relation to the wall in the wall-side hinge housing (4, 14) in the vicinity of its opening surface and of its housing wall on the wall opening side, and - the pivot axis of the leaf-side main lever is located in relation to the leaf in the leaf-side hinge housing (5, 15) in the vicinity of its opening surface and of its leaf-opening housing wall, and - the movements of the translationally moveable ends of the main levers (7, 8) during the opening movement of the leaf run from the inside of the respective hinge housing (4, 5, 14, 15) closer to its opening surface, and - the two main levers (7, 8) are held together in a pivotable manner on a pivot axis, and - both main levers (7, 8) are curved in the longitudinal region which extends between the respective pivot axis (11, 16) anchored to a hinge housing (4, 14; 5, 15) and the pivot axis with the second main lever (8, 7), wherein, when the leaf is closed, the concave side of the curvature faces the opening side of the respective hinge housing (4, 14; 5, 15), and - all four of those axle bolts by means of which the two main levers (7, 8) are held directly on one of the hinge housings (4, 14; 5, 15) in a moveable manner extend continuously from the upper housing surface to the lower housing surface in the respective hinge housing (4, 14; 5, 15), and, - when the leaf is closed, the pivot axis - which is an infinitely thin straight line - of the two main levers (7, 8) is positioned in relation to each other not further away from the wall closing side of the hinge (3, 12, 18, 24, 25) than the diameter dimension of one of those bearing bolts on which a main lever (7, 8) is mounted exclusively pivoting on a hinge housing (4, 5; 5, 15), and - when the leaf of at least one of the two main levers (7, 8) is closed the translationally moveable lever end is located in the vicinity of the leaf or wall closing side of the respective hinge housing (4, 14) in such a way that a straight connecting line between the pivot axis of the two main levers (7, 8) to each other and the bearing axis at this translationally moveable lever end is not inclined more than 5 angular degrees with respect to the direction of the wall,