The most common form of cornering is pivoting: when the attacker breaks the ladder by playing one hex ahead. This usually results in a ladder for the opponent. Example:
Red could have also cornered earlier, resulting, for example, in a 4th row ladder for Blue.
C4 corner move
Given enough space, the attacker can sometimes get an outcome that is better than merely turning the ladder, though not as good as a switchback. For example, starting from a 2nd row ladder, the following maneuver lets Red move towards the center, rather than parallel to Blue's edge:
Blue now has several options, but all of them allow Red to connect towards the center of the board:
Note how Red's 9 is connected to the edge via a double threat at the cells marked "*". If Blue instead plays 6 on the second row, things are generally worse for Blue:
Note that Red's 7 is connected to the edge via edge template IV2b.
D3 corner move
Another useful corner move for second row ladders is this:
This move has some similarities with Tom's move, although it does not require a parallel ladder. Note that 5 and 9 are connected to the edge by edge template IV2b. The shaded area is not required for this move, i.e., it can be occupied by Blue.