Ladder escape
From HexWiki
In the ladder situation below, the piece h8 is a ladder escape, or an escape piece.
It allows Red (the attacking player) to jump a move ahead of the ladder and win the game. Red can play along the ladder, forcing Blue's response at each step. After c8, c9, d8, d9, f8, f9, g8 Red is connected to the bottom.
In general, for a ladder escape to be successful, it should be safely connected to the edge and not interfere with the ladder's projected path.
